bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effect of Metatarsal Pads and Their Positioning: A Quantitative Assessment
Authors: Hayda R. , Tremaine M. David , Tremaine K. , Banco S. , Teed K. 
Published: March 2013

Many conditions of the foot have been related to pressure maldistribution. Alteration of plantar pressure through improvements of shoe fit, orthoses, and surgery are presumed to correct pressure maldistribution. We evaluated 10 volunteers with normal, asymptomatic feet. With the use of an ultrathin in-shoe sensor, plantar pressures were measured within the shoe at the shoe/foot interface. Test conditions included three pad types: large foam, large felt, and small felt. They were evaluated in three positions: normal (at the metatarsal head base) and 5 mm proximal and 5 mm distal to the normal position. When compared with the control condition without the pad, each pad type and position caused a variable effect upon plantar pressure. On average, the small felt pad caused the greatest and most consistent decrease in pressure at the metatarsal heads (19.15%). Distal positioning tended to cause the greatest decreases in pressure for all pad types. A pad type and position was found to decrease metatarsal pad pressure in each subject. Metatarsal pads can effectively decrease plantar pressures within the shoe.
Foot and Ankle Problems in Rheumatoid Arthritis
Authors: Michelson James , Easley Mark , Wigley Fredrick M. , Hellmann David 
Published: March 2013

The purpose of this study was to examine the prevalence of foot and ankle problems in 99 patients with clinically proven rheumatoid arthritis. Patients were recruited from outpatient rheumatology clinics; no attempt was made to select patients on the basis of the severity of their disease, duration of disease, or symptom constellation. Each patient was examined by an investigator utilizing a predesigned protocol to assess their functional status, functional capacity, and overall joint involvement. Ninety-three of 99 patients had complaints referable to the foot or ankle at some time since diagnosis of rheumatoid arthritis. Ankle problems were paramount in 42%, forefoot difficulties in 28%, and equal ankle and forefoot problems in another 14%. Only four patients had had any treatment involving foot orthotic devices or special shoe wear. The prevalence of foot and ankle symptoms was related to the duration of systemic illness, but was present in > 50% of patients at any time after diagnosis of rheumatoid arthritis. Patients with longstanding rheumatoid arthritis have a high prevalence of foot and ankle symptoms. Unlike previous reports, the present study found a high prevalence of ankle and hindfoot symptoms, as opposed to forefoot complaints. Despite this finding, the patients had been treated infrequently by either conservative nonoperative management directed at accommodating footwear or surgical intervention to favorably alter their foot and ankle mechanics.
Deltoid Ligament Forces after Tibialis Posterior Tendon Rupture: Effects of Triple Arthrodesis and Calcaneal Displacement Osteotomies
Authors: Resnick Ronald B. , Jahss Melvin H. , Choueka Jack , Kummer Fred , Hersch Jonathan C. , Okereke Enyi 
Published: March 2013

Deltoid ligament forces were studied after observing deltoid ligament insufficiency in several post-triple arthrodesis patients. Six fresh-frozen, below-knee amputation specimens were axially loaded. The results demonstrate that a properly positioned triple arthrodesis produced deltoid ligament forces that were similar to those seen with an intact tibialis posterior tendon. A triple arthrodesis in combination with a lateral displacement calcaneal osteotomy produced deltoid ligament forces that were 76% greater than those seen with the intact tibialis posterior tendon ( P < .05). A triple arthrodesis in combination with a medial displacement calcaneal osteotomy produced deltoid ligament forces that were 56% less than those seen with the lateral displacement calcaneal osteotomy ( P < .01). Patients with longstanding ruptures of the tibialis posterior tendon and associated peritalar subluxation/dislocation may have less than optimal clinical results after triple arthrodesis, unless the hindfoot can be properly reduced, due to persistent elevated forces in the deltoid ligament and resulting ligament laxity. This study suggests that a medial displacement calcaneal osteotomy in combination with a triple arthrodesis may be a viable treatment when the hindfoot cannot be positioned properly.
Ankle Performance after Ankle Fracture: A Randomized Study of Early Mobilization
Authors: Tropp Hans , Norlin Rolf 
Published: March 2013

In a prospective, randomized study, 30 patients were evaluated after ankle fracture treated by means of open reduction and internal fixation. The patients were randomized to either postoperative immobilization in a plaster cast for 6 weeks or early mobilization (1–2 weeks after surgery) in an ankle brace. Both regimens allowed weightbearing. Evaluation after 10 weeks and after 12 months included clinical assessment and isokinetic muscle strength measurements. Patients with impaired ankle function, as shown by means of an ankle score at 12 months, were followed for 3 years. At 10 weeks, impaired muscle torque and restricted range of motion was found on the affected side. This impairment was significantly less in the brace group. At 12 months, range of motion of the ankle and subtalar joints was restored, but dorsiflexion was still better in the brace group. Score values from a functional score did not correlate with muscle strength.
Hallux Valgus Correction with Metatarsal Osteotomy: Effect of a Lateral Distal Soft Tissue Procedure
Authors: Granberry William M. , Hickey C. Hugh 
Published: March 2013

The purpose of this study was to compare the results of hallux valgus correction using a proximal metatarsal osteotomy with or without a lateral distal metatarsophalangeal soft tissue procedure. This procedure included release of the lateral joint capsule and transfer of the adductor tendon into the neck of the metatarsal. Two groups of patients were reviewed retrospectively. In the first group (17 patients and 25 feet), a proximal closing wedge osteotomy and an Akin osteotomy were performed. In the second group (22 patients and 31 feet), in addition to the osteotomies, the adductor tendon and lateral capsule were released from the sesamoid and the adductor tendon was sutured into the neck of the first metatarsal. Exostectomy and plication of the medial capsule were done in all cases. Physical examination at follow-up revealed significantly more first metatarsophalangeal stiffness in the second group. The average arc of motion was 62° in the first group and 46° in the second. Radiographically, however, results were significantly better in the second group. The average intermetatarsal angle was 9.6° for group 1 and 6.1° for group 2. The average hallux valgus angle was 15° for group 1 and 10° in group 2. Complications included three pin tract infections and four dorsal malunions. The lateral distal soft tissue procedure ensured a more reliable correction of the bunion deformity. However, it resulted in a significant amount of postoperative first metatarsophalangeal stiffness.
Hallux Valgus Correction Using a Modified Hohmann Technique
Authors: Christensen Poul Hedevang , Hansen Torben Bæk 
Published: March 2013

In 181 patients presenting with hallux valgus (247 toes), we performed a modified Hohmann procedure with Kirschner wire fixation of the osteotomy. Follow-up by a questionnaire was possible in 159 patients representing 217 operated toes (21 reoperations), and roentgenograms of bony healing were assessed in all these patients. The questionnaire was returned by 91% (145/159) of the patients. The average observation time was 52 months (25–97 months). The average correction of the hallux valgus angle was 10°, ranging from 31.4° before surgery to 21.4° after surgery. Eighty-eight percent of the patients stated that they had an excellent or good/fair result, and 12% had pain or problems with footwear. We found a positive correlation among the correction of the valgus angle, the lateral displacement, shortening of the first metatarsal, and the overall result. No correlation was found among the plantar displacement, correction of the intermetatarsal angle and the result. The modified Hohmann procedure is, in our opinion, a safe and reliable procedure for treating hallux valgus deformity of the foot.
Distal Tibia Bone Graft for Arthrodesis of the Foot and Ankle
Authors: Danziger Marc B. , Abdo Richard V. , Decker J. Elliot 
Published: March 2013

Forty patients since 1988 have had distal tibial bone grafting for 41 arthrodeses of the foot and ankle. Bone graft is obtained through a cortical window made just above the medial metaphyseal distal tibial flare. Average follow-up was 23.3 months. Forty of 41 arthrodesis sites fused; there was only one nonunion. There were no delayed unions. There were no complications at the donor site based on patient examination and radiographs. Ipsilateral ankle motion was not affected by the bone graft procedure. Cited complications from iliac crest bone graft include donor site pain, blood loss, heterotopic bone formation, pelvic instability, iliac hernia, infection, fracture, and deformity. Complications with allografts include disease transmission and immune response. These are avoided by using locally obtained distal tibia autograft for arthrodeses in the foot and ankle.
Triple Arthrodesis for Diabetic Peritalar Neuroarthropathy
Authors: Tisdel Christopher L. , Marcus Randall E. , Heiple Kingsbury G. 
Published: March 2013

From 1963 to 1990, the senior authors (R.E.M. and K.G.H.) performed eight triple arthrodeses in seven patients with diabetes mellitus with sensory loss in the lower extremities. By clinical and roentgenographic examination, all patients were diagnosed with peritalar neuroarthropathy before surgery. All patients underwent a two-incision triple arthrodesis with internal fixation. Patient follow-up averaged 44 months and included repeat physical examinations and radiographs. All patients went on to clinical union and were satisfied with the procedure. One patient had prolonged wound drainage that resolved with antibiotic therapy; another had a residual rocker-bottom deformity and plantar ulceration that resolved after modification of custom shoe wear. We believe comprehensive management of diabetic peritalar neuroarthropathy can include surgical arthrodesis of the involved joints. The disease process and surgical indications are discussed.
Treatment Outcome of Major Fractures of the Talus
Authors: Frawley Philip A. , Hart John A. L. , Young David A. 
Published: March 2013

Twenty-six patients with major fractures of the talus were studied to assess the long-term outcome. The patients were admitted to a university teaching hospital and major trauma center from 1983 to 1991. The study excluded isolated fractures of the talar dome and posterior tubercle. Fifteen patients were treated using internal fixation and 11 patients were treated using nonsurgical methods. Avascular necrosis was detected in only four of the 26 patients. Subtalar osteoarthritis was a significant problem in 61%. Seven of these patients have come to secondary fusion procedures, with another three contem-plating fusion procedures at the time of review. Only one patient developed significant avascular necrosis requiring a fusion procedure. Only three of 26 patients had not returned to work at a mean 6 years after their injury. Eleven of the 26 (42%) had not returned to their premorbid activity level. The majority of these patients (25/26) had sustained multiple injuries, which compromised the functional recovery from the talar injury. Early accurate diagnosis and anatomical reduction gave the best results. The low incidence of avascular necrosis in this study has been attributed to early anatomical stabilization of the fracture. We believe an early CT scan can more accurately assess the severity of the talar fracture and offers the best information for an appropriate treatment plan.
Retrograde Intramedullary Nailing for Ankle Arthrodesis
Authors: Moore Thomas J. , Prince Robert , Pochatko David , Smith Judith W. , Fleming Samuel 
Published: March 2013

This is a retrospective study of retrograde intramedullary rodding for ankle arthrodesis in 19 ankles in 16 patients. The preoperative diagnosis of 16 patients was diabetic neuropathic arthropathy in seven patients, rheumatoid arthritis in three patients, post traumatic arthrosis in three patients, paraplegia with fixed equinovarus of the foot in two patients, and avascular necrosis of the talus in one patient. Retrograde intramedullary rodding for ankle arthrodesis was done as a salvage procedure in each patient. Fourteen of the 19 ankles had radiographic evidence of solid arthrodesis. In the four patients with five ankles with pseudarthrosis, no case was clinically significant. There was one deep infection and one broken rod. Thirteen of the 16 patients are ambulatory, and nine required either an ankle-foot orthosis or shoe modification. The standard method of ankle fusion using crossed cancellous screws is the procedure of choice because it preserves the subtalar joint. Retrograde intramedullary rodding for ankle arthrodesis should be considered for patients with significant posttraumatic arthrosis and bone loss following distal tibial plafond fractures, concomitant subtalar arthrosis, severe osteopenia, such as in patients with rheumatoid arthritis, or neuropathic arthropathy.
Treatment of Symptomatic Hammertoe with a Proximal Interphalangeal Joint Arthrodesis
Authors: Lehman Daniel E. , Smith Ronald W. 
Published: March 2013

This study examined 76 consecutive patients (100 feet) treated by a single surgeon for both flexible and rigid hammertoes with a PIP arthrodesis using custom-machined drills, a peg cutter, and hole cutter, combined with an extensor tenotomy and dorsal capsulotomy. Forty-eight percent of patients were defined as satisfied without reservation, 37% were defined as satisfied with reservations, and 15% were defined as dissatisfied. The incidence of radiographic fusion was 95% (130/137 toes). The most common reasons for either reservation or dissatisfaction included incomplete pain relief, residual toe angulation, and prolonged shoe wear restriction in the postoperative period. Based upon the results of this study, the authors suggest that when using a peg and socket arthrodesis for hammertoe correction (1) there is a 95% rate of radiographic fusion, (2) patients over 65 years old be alerted to a diminished rate of satisfaction, and (3) a distal flexor tenotomy be considered in patients with a preoperative DIP flexion contracture.
Kinematics of the Axially Loaded Ankle
Authors: Michelson James D. , Helgemo Stephen L. 
Published: March 2013

An apparatus that allowed the application of a 900 N axial load and the simultaneous measurement of rotation in the sagittal, coronal, and axial planes was used to study the normal kinematics of the ankle in 13 below-knee amputation specimens. Two testing routines were done on all specimens. In the first sequence, specimens were moved through a dorsiflexion (DF) and plantarflexion (PF) arc of 60° (25° DF and 35° PF). DF was associated with an average of 2.5° of external rotation, and PF was associated with an average of <1° of internal rotation. In the coronal plane, PF and DF were both associated with <1° of varus. In the second part of the testing, the ankle position in the sagittal plane (DF/PF) was fixed and the axial load was increased from 50 N to 750 N in 100-N intervals. Increasing the axial load caused an increase in external rotation and valgus of 1° to 2°. For axial rotation, external rotation was more pronounced in PF than DF. The effect of load on the increase on valgus was not affected by sagittal ankle position. The effect of increasing axial load on sagittal rotation was to increase DF or PF <2° over the entire range of loads and sagittal positions. The understanding of ankle biomechanics is essential to the formulation of rational guidelines for the treatment of ankle pathology and the prediction of the long-term consequences of ankle injuries. The incomplete understanding of this subject is evident when the disparate recommendations for a number of common conditions are considered. By examining the three-dimensional motion of the stable ankle, a more precise understanding of the abnormal three-dimensional motions associated with instability can be achieved. This knowledge will permit a logical approach to treatment of ankle fractures.
Efficacy of First-Time Steroid Injection for Painful Heel Syndrome
Authors: Miller Richard A. , Torres John , McGuire Michael 
Published: March 2013

The purpose of this study was to evaluate the results of a single injection of corticosteroids in patients with painful heel syndrome. Twenty-seven heels in 24 patients were injected with a combination of 1 ml of lidocaine and 1 ml of betamethasone (6 mg). These patients had never previously received an injection to their heels and had continued symptoms of pain after a trial of other nonoperative treatment modalities. After the injection, patients were seen and surveyed periodically for a period of 5 months to 8 months. The amount of pain relief that they obtained, the length of time this lasted, and the amount of heel pain present at the final follow-up were recorded. Based on the results of our study, we believe that a steroid injection is a reasonable adjunct in the treatment of painful heel syndrome, but that it is unlikely to provide permanent pain relief.
Surgical Revision after Failed Lateral Ankle Reconstruction
Authors: Sammarco G. James , Carrasquillo Hiram A. 
Published: March 2013

Ten patients were treated with revision ankle ligament reconstruction from 1989 through 1994 for recurrent symptomatic instability of the ankle after failure of a primary reconstruction. There were seven female and three male patients with an average age of 28 years. In four patients, symptoms developed shortly after the first reconstruction and in six patients, symptoms developed 56.2 months (average) after the initial reconstruction surgery. The average follow-up was 14 months after revision surgery. All patients had significant functional impairment before surgery and all failed to respond to conservative treatment, which included physical therapy and bracing. Seven revision ligament reconstructions included the use of a tendon graft, including the pero-neus brevis, accessory peroneus, plantaris, and peroneus tertius. All revision procedures were modifications of the Elmslie procedure, (Sammarco-DiRaimondo). In addition, three Brostrom-Gould procedures were performed. The average follow-up was 31 months. All patients had clinical stability of the ankle following revision reconstruction. Nine patients (90%) returned to their previous functional level. After surgery, two patients had minimal pain and mononeuritis multiplex developed in one patient. The outcome of revision ankle ligament reconstruction compares favorably with reports for primary ankle reconstruction. Revision ankle reconstruction is a good procedure for selected patients. It is an appropriate option when conservative therapy fails to relieve recurrent symptoms of ankle instability following primary reconstruction.
Split Posterior Tibial Tendon Transfer Through the Interosseus Membrane in Spastic Equinovarus Deformity
Authors: Mulier Thomas , Moens Pierre , Molenaers Guy , Spaepen Dominique , Dereymaeker Greta , Fabry Guy 
Published: March 2013

The split posterior tibial tendon transfer procedure was first reported by Green for correction of equinovarus hindfoot deformity in patients with cerebral palsy. A modification of the split posterior tibial tendon transfer combined with an Achilles tendon lengthening is described in 17 children (21 procedures) with a minimum follow-up of 3 years. This modified technique is indicated in young children with a continuously spastic posterior tibial tendon to correct a dynamic equinovarus. It restores active dorsiflexion when the anterior tibial and extensor muscles are weak. The anterior half of the split tibialis posterior is transferred through the interosseus membrane to the dorsum of the foot. Excellent or good results and two poor results were noted after a mean follow-up of 29 months. In the patients with an excellent or good result, marked improvement of their equinovarus foot deformity in stance and swing phase of gait was seen. In two patients, the procedure failed because of technical errors.
Paradoxical Transcutaneous Oxygen Response to Cutaneous Warming on the Plantar Foot Surface: A Caution for Interpretation of Plantar Foot TcPO2 Measurements
Authors: Smith Douglas G. , Boyko Edward J. , Ahroni Jessie H. , Stensel Victoria L. , Davignon Denise R. , Pecoraro Roger E. 
Published: March 2013

We examined the effect of cutaneous warming on the transcutaneous oxygen measurement (TcPO2) at standard locations below the knee, on the dorsal foot, on the plantar right great toe, and on the plantar surface under the second metatarsal head of 656 diabetic and 16 nondiabetic subjects. All subjects underwent a directed medical history, physical examination, and neurovascular lower extremity evaluation and assessment of autonomic neuropathy. Associations between autonomic neuropathy and TcPO2 were tested using two-way analysis of variance and multiple linear regression. An unexpected, statistically significant fall in TcPO2 occurred with cutaneous warming from 37°C to 44°C on the plantar great toe surface that did not differ by presence of autonomic neuropathy, or the presence of diabetes (mean change: −8.82 mmHg, 95% confidence interval [CI]: −7.70 to −9.93). The TcPO2 measured at the plantar metatarsal head site also fell with cutaneous warming from 37°C to 44°C (mean change: −9.67 mmHg, 95% CI: −7.75 to −11.59). As expected, the TcPO2 increased with cutaneous warming from 37°C to 44°C on the dorsal foot site (mean rise:= 35.61 mmHg, 95% CI: 34.18 to 37.04). The mean TcPO2 at any site did not differ by presence of autonomic neuropathy at either 37°C or 44°C. We conclude that cutaneous warming leads to a paradoxical fall in TcPO2 on the plantar foot surface that does not depend on the presence of autonomic neuropathy or diabetes. Caution in interpretation of ambient versus warmed plantar TcPO2 values is recommended.
Subtalar Joint Dislocations
Authors: Bohay Donald R. , Manoli Arthur 
Published: March 2013

Dislocations of the subtalar joint are rare injuries. The anatomy, pathophysiology, treatment, and prognosis of subtalar joint dislocations have been well described in the literature. The purpose of this paper is to review the current literature on subtalar joint dislocations, as well as outline those aspects of the anatomy, pathomechanics, and treatment pertinent to care of the patient with subtalar joint dislocation. In addition, complications and obstacles to reduction are described. Subtalar joint dislocations, although not common, have increased in frequency over the last decade. Generally, they can be treated successfully with closed reduction and a short period of cast immobilization. The majority of patients will suffer some disability with subtalar joint stiffness the primary complaint. Associated intra-articular fractures increase the risk of posttraumatic arthrosis.