Hip replacement - wikipedia Hip replacement This article is about human hip replacement. For hip replacement in animals, see Hip replacement ( animal ). Hip replacement An X-ray showing a right hip ( left of image ) has been replaced, with the ball of this ball - and - socket joint replaced by a metal head that is set in the femur and the socket replaced by a white plastic cup ( clear in this X-ray ). ICD - 9 - CM 81.51 -- 81.53 MeSH D019644 MedlinePlus 002975 ( edit on Wikidata ) Hip replacement is a surgical procedure in which the hip joint is replaced by a prosthetic implant, that is, a hip prosthesis. Hip replacement surgery can be performed as a total replacement or a hemi ( half ) replacement. Such joint replacement orthopaedic surgery is generally conducted to relieve arthritis pain or in some hip fractures. A total hip replacement ( total hip arthroplasty ) consists of replacing both the acetabulum and the femoral head while hemiarthroplasty generally only replaces the femoral head. Hip replacement is currently one of the most common orthopaedic operations, though patient satisfaction short - and long - term varies widely. The average cost of a total hip replacement in 2012 was $40,364 in the United States, and about $7,700 to $12,000 in most European countries. Contents 1 Medical uses 2 Modern process 3 Techniques 3.1 Posterior approach 3.2 Lateral approach 3.3 Antero - lateral approach 3.4 Anterior approach 3.5 Minimally invasive approaches 4 Implants 4.1 Acetabular cup 4.2 Femoral component 4.3 Articular interface 5 Configuration 6 Risks 6.1 Infection 6.2 Dislocation 6.3 Limb Length Inequality 6.4 Fracture 6.5 Vein thrombosis 6.6 Osteolysis 6.7 Loosening 6.8 Metal sensitivity 6.9 Metal toxicity 6.10 Nerve palsy 6.11 Chronic pain 6.12 Death 6.13 Metal - on - metal hip implant failure 7 Alternatives and variations 7.1 Conservative management 7.2 Preoperative care 7.3 Hemiarthroplasty 7.4 Hip resurfacing 7.5 Viscosupplementation 8 Prevalence and cost 9 History 10 See also 11 References 12 External links Medical uses Total hip replacement is most commonly used to treat joint failure caused by osteoarthritis. Other indications include rheumatoid arthritis, avascular necrosis, traumatic arthritis, protrusio acetabuli, certain hip fractures, benign and malignant bone tumors, arthritis associated with Paget 's disease, ankylosing spondylitis and juvenile rheumatoid arthritis. The aims of the procedure are pain relief and improvement in hip function. Hip replacement is usually considered only after other therapies, such as physical therapy and pain medications, have failed. Modern process Main components of a hip prosthesis A titanium hip prosthesis, with a ceramic head and polyethylene acetabular cup The modern artificial joint owes much to the 1962 work of Sir John Charnley at Wrightington Hospital. His work in the field of tribology resulted in a design that almost completely replaced the other designs by the 1970s. Charnley 's design consisted of three parts : stainless steel one - piece femoral stem and head polyethylene ( originally Teflon ), acetabular component, both of which were fixed to the bone using PMMA ( acrylic ) bone cement The replacement joint, which was known as the Low Friction Arthroplasty, was lubricated with synovial fluid. The small femoral head ( ⁄ in ( 22.2 mm ) ) was chosen for Charnley 's belief that it would have lower friction against the acetabular component and thus wear out the acetabulum more slowly. Unfortunately, the smaller head dislocated more easily. Alternative designs with larger heads such as the Mueller prosthesis were proposed. Stability was improved, but acetabular wear and subsequent failure rates were increased with these designs. The Teflon acetabular components of Charnley 's early designs failed within a year or two of implantation. This prompted a search for a more suitable material. A German salesman showed a polyethylene gear sample to Charnley 's machinist, sparking the idea to use this material for the acetabular component. The ultra high molecular weight polyethylene or UHMWPE acetabular component was introduced in 1962. Charnley 's other major contribution was to use polymethylmethacrylate ( PMMA ) bone cement to attach the two components to the bone. For over two decades, the Charnley Low Friction Arthroplasty, and derivative designs were the most used systems in the world. It formed the basis for all modern hip implants. The Exeter hip stem was developed in the United Kingdom during the same time as the Charnley device. Its development occurred following a collaboration between Orthopaedic Surgeon Robin Ling and University of Exeter engineer Clive Lee and it was first implanted at the Princess Elizabeth Orthopaedic Hospital in Exeter in 1970. The Exeter Hip is a cemented device, but with a slightly different stem geometry. Both designs have shown excellent long - term durability when properly placed and are still widely used in slightly modified versions. Early implant designs had the potential to loosen from their attachment to the bones, typically becoming painful ten to twelve years after placement. In addition, erosion of the bone around the implant was seen on x-rays. Initially, surgeons believed this was caused by an abnormal reaction to the cement holding the implant in place. That belief prompted a search for an alternative method to attach the implants. The Austin Moore device had a small hole in the stem into which bone graft was placed before implanting the stem. It was hoped bone would then grow through the window over time and hold the stem in position. Success was unpredictable and the fixation not very robust. In the early 1980s, surgeons in the United States applied a coating of small beads to the Austin Moore device and implanted it without cement. The beads were constructed so that gaps between beads matched the size of the pores in native bone. Over time, bone cells from the patient would grow into these spaces and fix the stem in position. The stem was modified slightly to fit more tightly into the femoral canal, resulting in the Anatomic Medullary Locking ( AML ) stem design. With time, other forms of stem surface treatment and stem geometry have been developed and improved. Initial hip designs were made of a one - piece femoral component and a one - piece acetabular component. Current designs have a femoral stem and separate head piece. Using an independent head allows the surgeon to adjust leg length ( some heads seat more or less onto the stem ) and to select from various materials from which the head is formed. A modern acetabulum component is also made up of two parts : a metal shell with a coating for bone attachment and a separate liner. First the shell is placed. Its position can be adjusted, unlike the original cemented cup design which are fixed in place once the cement sets. When proper positioning of the metal shell is obtained, the surgeon may select a liner made from various materials. To combat loosening caused by polyethylene wear debris, hip manufacturers developed improved and novel materials for the acetabular liners. Ceramic heads mated with regular polyethylene liners or a ceramic liner were the first significant alternative. Metal liners to mate with a metal head were also developed. At the same time these designs were being developed, the problems that caused polyethylene wear were determined and manufacturing of this material improved. Highly crosslinked UHMWPE was introduced in the late 1990s. The most recent data comparing the various bearing surfaces has shown no clinically significant differences in their performance. Potential early problems with each material are discussed below. Performance data after 20 or 30 years may be needed to demonstrate significant differences in the devices. All newer materials allow use of larger diameter femoral heads. Use of larger heads significantly decreases the chance of the hip dislocating, which remains the greatest complication of the surgery. When currently available implants are used, cemented stems tend to have a better longevity than uncemented stems. No significant difference is observed in the clinical performance of the various methods of surface treatment of uncemented devices. Uncemented stems are selected for patients with good quality bone that can resist the forces needed to drive the stem in tightly. Cemented devices are typically selected for patients with poor quality bone who are at risk of fracture during stem insertion. Cemented stems are less expensive due to lower manufacturing cost, but require good surgical technique to place them correctly. Uncemented stems can cause pain with activity in up to 20 % of patients during the first year after placement as the bone adapts to the device. This is rarely seen with cemented stems. Once an uncommon operation reserved for frail patients with a limited life expectancy, hip replacement is now common, even among active athletes including race car drivers Bobby Labonte and Dale Jarrett, and the 8 - time Major - winning American golfer Tom Watson, who shot a 67 in the opening round of the Masters Tournament in the year following his operation. Techniques There are several incisions, defined by their relation to the gluteus medius. The approaches are posterior ( Moore ), lateral ( Hardinge or Liverpool ), antero - lateral ( Watson - Jones ), anterior ( Smith - Petersen ) and greater trochanter osteotomy. There is no compelling evidence in the literature for any particular approach, but consensus of professional opinion favours either modified anterolateral ( Watson - Jones ) or posterior approach. Posterior approach The posterior ( Moore or Southern ) approach accesses the joint and capsule through the back, taking piriformis muscle and the short external rotators of the femur. This approach gives excellent access to the acetabulum and femur and preserves the hip abductors and thus minimizes the risk of abductor dysfunction post operatively. It has the advantage of becoming a more extensile approach if needed. Critics cite a higher dislocation rate, although repair of the capsule, piriformis and the short external rotators along with use of modern large diameter head balls reduces this risk. Lateral approach The lateral approach is also commonly used for hip replacement. The approach requires elevation of the hip abductors ( gluteus medius and gluteus minimus ) to access the joint. The abductors may be lifted up by osteotomy of the greater trochanter and reapplying it afterwards using wires ( as per Charnley ), or may be divided at their tendinous portion, or through the functional tendon ( as per Hardinge ) and repaired using sutures. Although this approach has a lower dislocation risk than the posterior approach, critics note that occasionally the abductor muscles do not heal back on, leading to pain and weakness which is often very difficult to treat. Antero - lateral approach The anterolateral approach develops the interval between the tensor fasciae latae and the gluteus medius. The Gluteus medius, gluteus minimus and hip capsule are detached from the anterior ( front ) for the greater trochanter and femoral neck and then repaired with heavy suture after the replacement of the joint. Anterior approach The anterior approach uses an interval between the sartorius muscle and tensor fasciae latae. Dr. Joel Matta and Dr. Bert Thomas have adapted this approach, which was commonly used for pelvic fracture repair surgery, for use when performing hip replacement. When used with older hip implant systems that had a small diameter head, dislocation rates were reduced compared to surgery performed through a posterior approach. With modern implant designs, dislocation rates are similar between the anterior and posterior approaches. The anterior approach has been shown in studies to variably improve early functional recovery, with possible complications of femoral component loosening and early revision compared to other approaches Minimally invasive approaches The dual incision approach and other minimally invasive surgery seeks to reduce soft tissue damage through reducing the size of the incision. However, component positioning accuracy and visualization of the bone structures can be significantly impaired as the approaches get smaller. This can result in unintended fractures and soft tissue injury. The majority of current orthopedic surgeons use a `` minimally invasive '' approach compared to traditional approaches which were quite large comparatively. Computer - assisted surgery and robotic surgery techniques are also available to guide the surgeon to provide enhanced accuracy. Several commercial CAS and robotic systems are available for use worldwide. Improved patient outcomes and reduced complications have not been demonstrated when these systems are used when compared to standard techniques. Implants Metal on metal prosthetic hip Cement - free implant sixteen days after surgery. Femoral component is cobalt chromium combined with titanium which induces bone growth into the implant. Ceramic head. Acetabular cup coated with bone growth - inducing material and held temporarily in place with a single screw. The prosthetic implant used in hip replacement consists of three parts : the acetabular cup, the femoral component, and the articular interface. Options exist for different people and indications. The evidence for a number of newer devices is not very good, including : ceramic - on - ceramic bearings, modular femoral necks, and uncemented monoblock cups. Correct selection of the prosthesis is important. Acetabular cup The acetabular cup is the component which is placed into the acetabulum ( hip socket ). Cartilage and bone are removed from the acetabulum and the acetabular cup is attached using friction or cement. Some acetabular cups are one piece, while others are modular. One - piece ( monobloc ) shells are either UHMWPE ( ultra-high - molecular - weight polyethylene ) or metal, they have their articular surface machined on the inside surface of the cup and do not rely on a locking mechanism to hold a liner in place. A monobloc polyethylene cup is cemented in place while a metal cup is held in place by a metal coating on the outside of the cup. Modular cups consist of two pieces, a shell and liner. The shell is made of metal ; the outside has a porous coating while the inside contains a locking mechanism designed to accept a liner. Two types of porous coating used to form a friction fit are sintered beads and a foam metal design to mimic the trabeculae of cancellous bone and initial stability is influenced by under - reaming and insertion force. Permanent fixation is achieved as bone grows onto or into the porous coating. Screws can be used to lag the shell to the bone providing even more fixation. Polyethylene liners are placed into the shell and connected by a rim locking mechanism ; ceramic and metal liners are attached with a Morse taper. Femoral component This section possibly contains original research. Please improve it by verifying the claims made and adding inline citations. Statements consisting only of original research should be removed. ( April 2016 ) The femoral component is the component that fits in the femur ( thigh bone ). Bone is removed and the femur is shaped to accept the femoral stem with attached prosthetic femoral head ( ball ). There are two types of fixation : cemented and uncemented. Cemented stems use acrylic bone cement to form a mantle between the stem and to the bone. Uncemented stems use friction, shape and surface coatings to stimulate bone to remodel and bond to the implant. Stems are made of multiple materials ( titanium, cobalt chromium, stainless steel, and polymer composites ) and they can be monolithic or modular. Modular components consist of different head dimensions and / or modular neck orientations ; these attach via a taper similar to a Morse taper. These options allow for variability in leg length, offset and version. Femoral heads are made of metal or ceramic material. Metal heads, made of cobalt chromium for hardness, are machined to size and then polished to reduce wear of the socket liner. Ceramic heads are more smooth than polished metal heads, have a lower coefficient of friction than a cobalt chrome head, and in theory will wear down the socket liner more slowly. As of early 2011, follow - up studies in patients have not demonstrated significant reductions in wear rates between the various types of femoral heads on the market. Ceramic implants are more brittle and may break after being implanted. Articular interface This section possibly contains original research. Please improve it by verifying the claims made and adding inline citations. Statements consisting only of original research should be removed. ( April 2016 ) The articular interface is not part of either implant, rather it is the area between the acetabular cup and femoral component. The articular interface of the hip is a simple ball and socket joint. Size, material properties and machining tolerances at the articular interface can be selected based on patient demand to optimise implant function and longevity whilst mitigating associated risks. The interface size is measured by the outside diameter of the head or the inside diameter of the socket. Common sizes of femoral heads are 28 mm ( 1.1 in ), 32 mm ( 1.3 in ) and 36 mm ( 1.4 in ). While 22.25 mm ( ⁄ in ) was common in the first modern prostheses, now even larger sizes are available from 38 to over 54 mm. Larger - diameter heads lead to increased stability and range of motion whilst lowering the risk of dislocation. At the same time they are also subject to higher stresses such as friction and inertia. Different combinations of materials have different physical properties which can be coupled to reduce the amount of wear debris generated by friction. Typical pairings of materials include metal on polyethylene ( MOP ), metal on crosslinked polyethylene ( MOXP ), ceramic on ceramic ( COC ), ceramic on crosslinked polyethylene ( COXP ) and metal on metal ( MOM ). Each combination has different advantages and disadvantages. Configuration Post-operative projectional radiography is routinely performed to ensure proper configuration of hip prostheses. The direction of the acetabular cup influences the range of motion of the leg, and also affects the risk of dislocation. For this purpose, the acetabular inclination and the acetabular anteversion are measurements of cup angulation in the coronal plane and the sagittal plane, respectively. Acetabular inclination. This parameter is calculated on an anteroposterior radiograph as the angle between a line through the lateral and medial margins of the acetabular cup and the transischial line which is tangential to the inferior margins of the ischium bones. Acetabular inclination is normally between 30 and 50 °. A larger angle increases the risk of dislocation. Acetabular anteversion. This parameter is calculated on a lateral radiograph as the angle between the transverse plane and a line going through the ( anterior and posterior ) margins of the acetabular cup. Acetabular anteversion is normally between 5 and 25 °. An anteversion below or above this range increases the risk of dislocation. There is an intra-individual variability in this method because the pelvis may be tilted in various degrees in relation to the transverse plane. Leg length discrepancy after hip replacement is calculated as the vertical distance between the middle of the minor trochanters, using the acetabular tear drops or the transischial line as references for the horizontal plane. A discrepancy of up to 1 cm is generally tolerated. Center of rotation : The horizontal center of rotation is calculated as the distance between the acetabular teardrop and the center of the head ( or caput ) of the prosthesis and / or the native femoral head on the contralateral side. The vertical center of rotation instead uses the transischial line for reference. The parameter should be equal on both sides. Risks Risks and complications in hip replacement are similar to those associated with all joint replacements. They can include infection, dislocation, limb length inequality, loosening, impingement, osteolysis, metal sensitivity, nerve palsy, chronic pain and death. Weight loss surgery before a hip replacement does not appear to change outcomes. Infection Infection is one of the most common causes for revision of a total hip replacement, along with loosening and dislocation. The incidence of infection in primary hip replacement is around 1 % or less in the United States. Risk factors for infection include obesity, diabetes, smoking, immunosuppressive medications or diseases, and history of infection. Modern diagnosis of infection around a total knee replacement is based on the Musculoskeletal Infection Society ( MSIS ) criteria. They are : 1. There is a sinus tract communicating with the prosthesis ; or 2. A pathogen is isolated by culture from at least two separate tissue or fluid samples obtained from the affected prosthetic joint ; or Four of the following six criteria exist : 1. Elevated serum erythrocyte sedimentation rate ( ESR > 30mm / hr ) and serum C - reactive protein ( CRP > 10 mg / L ) concentration, 2. Elevated synovial leukocyte count, 3. Elevated synovial neutrophil percentage ( PMN % ), 4. Presence of purulence in the affected joint, 5. Isolation of a microorganism in one culture of periprosthetic tissue or fluid, or 6. Greater than five neutrophils per high - power field in five high - power fields observed from histologic analysis of periprosthetic tissue at × 400 magnification. None of the above laboratory tests has 100 % sensitivity or specificity for diagnosing infection. Specificity improves when the tests are performed in patients in whom clinical suspicion exists. ESR and CRP remain good 1st line tests for screening ( high sensitivity, low specificity ). Aspiration of the joint remains the test with the highest specificity for confirming infection. Dislocation Dislocated artificial hip Liner wear, particularly when over 2 mm, increases the risk of dislocation. Liner creep, on the other hand, is normal remoulding. Dislocation is the most common complication of hip replacement surgery. The most common causes vary by the duration since the surgery. Hip prosthesis dislocation mostly occurs in the first 3 months after insertion, mainly because of incomplete scar formation and relaxed soft tissues. It takes eight to twelve weeks for the soft tissues injured or cut during surgery to heal. During this period, the hip ball can come out of the socket. The chance of this is diminished if less tissue is cut, if the tissue cut is repaired and if large diameter head balls are used. Dislocations occurring between 3 months and 5 years after insertion usually occur due to malposition of the components, or dysfunction of nearby muscles. Risk factors of late dislocation ( after 5 years ) mainly include : Female gender Younger age at primary hip arthroplasty Previous subluxation without complete dislocation Previous trauma Substantial weight loss Recent onset or progression of dementia or a neurological disorder Malposition of the cup Wear of the liner, particularly when it causes movement of the head of more than 2 mm within the cup compared to its original position Prosthesis loosening with migration Surgeons who perform more of the operations each year tend to have fewer patients dislocate. Doing the surgery from an anterior approach seems to lower dislocation rates when small diameter heads are used, but the benefit has not been shown when compared to modern posterior incisions with the use of larger diameter heads. The use of larger diameter head size does in it self decrease the risk of dislocation, even though this correlation is only found in head sizes up to 28 mm, thereafter no additional decrease in dislocation rate is found. Patients can decrease the risk further by keeping the leg out of certain positions during the first few months after surgery. Limb length inequality Most adults prior to a hip replacement have a limb length inequality of 0 -- 2 cm which they were born with and which causes no clinical deficits. It is common for patients to feel a limb length inequality after total hip replacement. Sometimes the leg seems long immediately after surgery when in fact both are equal length. An arthritic hip can develop contractures that make the leg behave as if it is short. When these are relieved with replacement surgery and normal motion and function are restored, the body feels that the limb is now longer than it was. This feeling usually subsides by 6 months after surgery as the body adjusts to the new hip joint. The cause of this feeling is variable, and usually related to abductor muscle weakness, pelvic obliquity, and minor lengthening of the hip during surgery ( < 1 cm ) to achieve stability and restore the joint to pre-arthritic mechanics. If the limb length difference remains bothersome to the patient more than 6 months after surgery, a shoe lift can be used. Only in extreme cases is surgery required for correction. Fracture Bones with internal fixation devices in situ are at risk of periprosthetic fractures at the end of the implant, an area of relative mechanical stress. Post-operative femoral fractures are graded by the Vancouver classification. Vein thrombosis Venous thrombosis such as deep vein thrombosis and pulmonary embolism are relatively common following hip replacement surgery. Standard treatment with anticoagulants is for 7 -- 10 days ; however treatment for more than 21 days may be superior. Research from 2013 has on the other hand suggested that anticoagulants in otherwise healthy patients undergoing a so - called fast track protocol with hospital stays under five days, might only be necessary while in the hospital. Some physicians and patients may consider having an ultrasonography for deep vein thrombosis after hip replacement. However, this kind of screening should only be done when indicated because to perform it routinely would be unnecessary health care. Osteolysis Many long - term problems with hip replacements are the result of osteolysis. This is the loss of bone caused by the body 's reaction to polyethylene wear debris, fine bits of plastic that come off the cup liner over time. An inflammatory process causes bone resorption that may lead to subsequent loosening of the hip implants and even fractures in the bone around the implants. In an attempt to eliminate the generation of wear particles, ceramic bearing surfaces are being used in the hope that they will have less wear and less osteolysis with better long - term results. Metal cup liners joined with metal heads ( metal - on - metal hip arthroplasty ) were also developed for similar reasons. In the lab these show excellent wear characteristics and benefit from a different mode of lubrication. At the same time that these two bearing surfaces were being developed, highly cross linked polyethylene plastic liners were also developed. The greater cross linking significantly reduces the amount of plastic wear debris given off over time. The newer ceramic and metal prostheses do not always have the long - term track record of established metal on poly bearings. Ceramic pieces can break leading to catastrophic failure. This occurs in about 2 % of the implants placed. They may also cause an audible, high pitched squeaking noise with activity. Metal - on - metal arthroplasty releases metal debris into the body raising concerns about the potential dangers of these accumulating over time. Highly cross linked polyethylene is not as strong as regular polyethylene. These plastic liners can crack or break free of the metal shell that holds them. Loosening Hip prosthesis displaying aseptic loosening ( arrows ) Hip prosthesis zones according to DeLee and Charnley, and Gruen. These are used to describe the location of for example areas of loosening. On radiography, it is normal to see thin radiolucent areas of less than 2 mm around hip prosthesis components, or between a cement mantle and bone. However, these may still indicate loosening of the prosthesis if they are new or changing, and areas greater than 2 mm may be harmless if they are stable. The most important prognostic factors of cemented cups are absence of radiolucent lines in DeLee and Charnley zone I, as well as adequate cement mantle thickness. In the first year after insertion of uncemented femoral stems, it is normal to have mild subsidence ( less than 10 mm ). The direct anterior approach has been shown to itself be a risk factor for early femoral component loosening. Metal sensitivity Concerns are being raised about the metal sensitivity and potential dangers of metal particulate debris. New publications have demonstrated development of pseudotumors, soft tissue masses containing necrotic tissue, around the hip joint. It appears these masses are more common in women and these patients show a higher level of iron in the blood. The cause is unknown and is probably multifactorial. There may be a toxic reaction to an excess of particulate metal wear debris or a hypersensitivity reaction to a normal amount of metal debris. Metal hypersensitivity is a well - established phenomenon and is common, affecting about 10 -- 15 % of the population. Contact with metals can cause immune reactions such as skin hives, eczema, redness and itching. Although little is known about the short - and long - term pharmacodynamics and bioavailability of circulating metal degradation products in vivo, there have been many reports of immunologic type responses temporally associated with implantation of metal components. Individual case reports link hypersensitivity immune reactions with adverse performance of metallic clinical cardiovascular, orthopedic and plastic surgical and dental implants. Metal toxicity Main article : Metallosis Most hip replacements consist of cobalt and chromium alloys, or titanium. Stainless steel is no longer used. All implants release their constituent ions into the blood. Typically these are excreted in the urine, but in certain individuals the ions can accumulate in the body. In implants which involve metal - on - metal contact, microscopic fragments of cobalt and chromium can be absorbed into the patient 's bloodstream. There are reports of cobalt toxicity with hip replacement patients. Nerve palsy Post operative sciatic nerve palsy is another possible complication. The incidence of this complication is low. Femoral nerve palsy is another but much more rare complication. Both of these will typically resolve over time, but the healing process is slow. Patients with pre-existing nerve injury are at greater risk of experiencing this complication and are also slower to recover. Chronic pain A few patients who have had a hip replacement suffer chronic pain after the surgery. Groin pain can develop if the muscle that raises the hip ( iliopsoas ) rubs against the edge of the acetabular cup. Bursitis can develop at the trochanter where a surgical scar crosses the bone, or if the femoral component used pushes the leg out to the side too far. Also some patients can experience pain in cold or damp weather. Incision made in the front of the hip ( anterior approach ) can cut a nerve running down the thigh leading to numbness in the thigh and occasionally chronic pain at the point where the nerve was cut ( a neuroma ). Death The rate of death for elective hip replacements is significantly less than 1 %. Metal - on - metal hip implant failure See also : Implant failure By 2010, reports in the orthopaedic literature increasingly cited the problem of early failure of metal on metal prostheses in a small percentage of patients. Failures may relate to release of minute metallic particles or metal ions from wear of the implants, causing pain and disability severe enough to require revision surgery in 1 -- 3 % of patients. Design deficits of some prothesis models, especially with heat - treated alloys and a lack of special surgical experience accounting for most of the failures. Surgeons at leading medical centers such as the Mayo Clinic have reported reducing their use of metal - on - metal implants by 80 percent over the last year in favor of those made from other materials, like combinations of metal and plastic. The cause of these failures remain controversial, and may include both design factors, technique factors, and factors related to patient immune responses ( allergy type reactions ). In the United Kingdom the Medicines and Healthcare Products Regulatory Agency commenced an annual monitoring regime for metal - on - metal hip replacement patients from May 2010. Data which are shown in The Australian Orthopaedic Association 's 2008 National Joint replacement registry, a record of nearly every hip implanted in that country over the previous 10 years, tracked 6,773 BHR ( Birmingham Hip Resurfacing ) Hips and found that less than one - third of one percent may have been revised due to the patient 's reaction to the metal component. Other similar metal - on - metal designs have not fared as well, where some reports show 76 % to 100 % of the people with these metal - on - metal implants and have aseptic implant failures requiring revision also have evidence of histological inflammation accompanied by extensive lymphocyte infiltrates, characteristic of delayed type hypersensitivity responses. It is not clear to what extent this phenomenon negatively affects orthopedic patients. However, for patients presenting with signs of an allergic reactions, evaluation for sensitivity should be conducted. Removal of the device that is not needed should be considered, since removal may alleviate the symptoms. Patients who have allergic reactions to cheap jewelry are more likely to have reactions to orthopedic implants. There is increasing awareness of the phenomenon of metal sensitivity and many surgeons now take this into account when planning which implant is optimal for each patient. On March 12, 2012, The Lancet published a study, based on data from the National Joint Registry of England and Wales, finding that metal - on - metal hip implants failed at much greater rates than other types of hip implants and calling for a ban on all metal - on - metal hips. The analysis of 402,051 hip replacements showed that 6.2 % of metal - on - metal hip implants had failed within five years, compared to 1.7 % of metal - on - plastic and 2.3 % of ceramic - on - ceramic hip implants. Each 1 mm ( 0.039 in ) increase in head size of metal - on - metal hip implants was associated with a 2 % increase of failure. Surgeons of the British Hip Society are recommending that large head metal - on - metal implants should no longer be performed. On February 10, 2011, the U.S. FDA issued an advisory on metal - metal hip implants, stating it was continuing to gather and review all available information about metal - on - metal hip systems. On June 27 -- 28, 2012, an advisory panel met to decide whether to impose new standards, taking into account findings of the study in The Lancet. No new standards, such as routine checking of blood metal ion levels, were set, but guidance was updated. Currently, FDA has not required hip implants to be tested in clinical trials before they can be sold in the U.S. Instead, companies making new hip implants only need to prove that they are `` substantially equivalent '' to other hip implants already on the market. The exception is metal - on - metal implants, which were not tested in clinical trials but because of the high revision rate of metal - on - metal hips, in the future the FDA has stated that clinical trials will be required for approval and that post-market studies will be required to keep metal on metal hip implants on the market. Alternatives and variations Conservative management The first line approach as an alternative to hip replacement is conservative management which involves a multimodal approach of oral medication, injections, activity modification and physical therapy. Conservative management can prevent or delay the need for hip replacement. Pre-operative care Preoperative education is currently an important part of patient care. There is some evidence that it may slightly reduce anxiety before hip or knee replacement, with low risk of negative effects. Hemiarthroplasty Hemiarthroplasty is a surgical procedure which replaces one half of the joint with an artificial surface and leaves the other part in its natural ( pre-operative ) state. This class of procedure is most commonly performed on the hip after a subcapital ( just below the head ) fracture of the neck of the femur ( a hip fracture ). The procedure is performed by removing the head of the femur and replacing it with a metal or composite prosthesis. The most commonly used prosthesis designs are the Austin Moore prosthesis and the Thompson Prosthesis. More recently a composite of metal and HDPE which forms two interphases ( bipolar prosthesis ) has also been used. The monopolar prosthesis has not been shown to have any advantage over bipolar designs. The procedure is recommended only for elderly and frail patients, due to their lower life expectancy and activity level. This is because with the passage of time the prosthesis tends to loosen or to erode the acetabulum. Hip resurfacing Hip resurfacing is an alternative to hip replacement surgery. It has been used in Europe for over seventeen years and become a common procedure. Health - related quality of life measures are markedly improved and patient satisfaction is favorable after hip resurfacing arthroplasty. The minimally invasive hip resurfacing procedure is a further refinement to hip resurfacing. Viscosupplementation Current alternatives also include viscosupplementation, or the injection of artificial lubricants into the joint. Use of these medications in the hip is off label. The cost of treatment is typically not covered by health insurance organizations. Some believe that the future of osteoarthritis treatment is bioengineering, targeting the growth and / or repair of the damaged, arthritic joint. Centeno et al. have reported on the partial regeneration of an arthritic human hip joint using mesenchymal stem cells in one patient. It is yet to be shown that this result will apply to a larger group of patients and result in significant benefits. The FDA has stated that this procedure is being practiced without conforming to regulations, but Centeno claims that it is exempt from FDA regulation. It has not been shown in controlled clinical trials to be effective, and costs over $7,000. Prevalence and cost Total hip replacement incidence varies in developed countries between 30 ( Romania ) and 290 ( Germany ) procedures per 100,000 population per year. Approximately 0.8 % of Americans have undergone the procedure. According to the International Federation of Healthcare Plans, the average cost of a total hip replacement in 2012 was $40,364 in the United States, $11,889 in the United Kingdom, $10,987 in France, $9,574 in Switzerland, and $7,731 in Spain. In the United States, the average cost of a total hip replacement varies widely by geographic region, ranging from $11,327 ( Birmingham, Alabama ) to $73,927 ( Boston, Massachusetts ). History The earliest recorded attempts at hip replacement were carried out in Germany in 1891 by Themistocles Gluck ( 1853 -- 1942 ), who used ivory to replace the femoral head ( the ball on the femur ), attaching it with nickel - plated screws, Plaster of Paris, and glue. On September 28, 1940 at Columbia Hospital in Columbia, South Carolina, American surgeon Dr. Austin T. Moore ( 1899 -- 1963 ) performed the first metallic hip replacement surgery. The original prosthesis he designed was a proximal femoral replacement, with a large fixed head made of the cobalt - chrome alloy Vitallium. It was about a foot in length and bolted to the resected end of the femoral shaft ( hemiarthroplasty ). A later version, the so - called Austin Moore Prosthesis which was introduced in 1952, is still in use today, although rarely. Like modern hip implants, it is inserted into the medullary canal of the femur, and depends on bone growth through a hole in the stem for long - term attachment. See also Abductor wedge Femoral Acetabular Impingement Gruen zone Hip examination 2010 DePuy Hip Recall References ^ Jump up to : `` 2012 comparative price report '' ( PDF ). International Federation of Health Plans. Retrieved 4 October 2015. 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External links Edheads Virtual Hip Surgery + Surgery Photos AAOS Hip Replacement Orthopedic surgery, operations / surgeries and other procedures on bones and joints ( ICD - 9 - CM V3 76 -- 81, ICD - 10 - PCS 0P -- S ) Bones Facial Jaw reduction Dentofacial osteotomy Genioplasty / Mentoplasty Chin augmentation Orthognathic surgery Spine Coccygectomy Laminotomy Laminectomy Laminoplasty Corpectomy Facetectomy Foraminotomy Vertebral fixation Percutaneous vertebroplasty Upper extremity Acromioplasty Lower extremity Femoral head ostectomy Astragalectomy Distraction osteogenesis Ilizarov apparatus General Ostectomy Bone grafting Osteotomy Epiphysiodesis Reduction Internal fixation External fixation Tension band wiring Cartilage Articular cartilage repair Microfracture surgery Knee cartilage replacement therapy Autologous chondrocyte implantation Joints Spine Arthrodesis Spinal fusion Intervertebral discs Discectomy Annuloplasty Arthroplasty Upper extremity Shoulder surgery Shoulder replacement Bankart repair Weaver -- Dunn procedure Ulnar collateral ligament reconstruction Hand surgery Brunelli procedure Lower extremity Hip resurfacing Hip replacement Rotationplasty Anterior cruciate ligament reconstruction Knee replacement / Unicompartmental knee arthroplasty Ankle replacement Broström procedure Triple arthrodesis General Arthrotomy Arthroplasty Synovectomy Arthroscopy Replacement joint imaging : Arthrogram Arthrocentesis Retrieved from `` https://en.wikipedia.org/w/index.php?title=Hip_replacement&oldid=853650281 '' Categories : Implants ( medicine ) Orthopedic surgical procedures Pelvis Prosthetics Hidden categories : CS1 maint : Multiple names : authors list All articles with unsourced statements Articles with unsourced statements from November 2007 Articles with unsourced statements from December 2007 Articles with unsourced statements from July 2012 Articles that may contain original research from April 2016 All articles that may contain original research Articles with unsourced statements from October 2012 Articles with unsourced statements from May 2014 Talk Contents About Wikipedia Afrikaans অসমীয়া Español Euskara فارسی Français Nederlands Simple English Suomi 3 more Edit links This page was last edited on 6 August 2018, at 04 : 00 ( UTC ). 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Question: when was the first hip replacement surgery performed
Answer: 1891