bluuebunny/crossref_metadata_2025_split huggingface dataset:
An Anatomical Basis for the Degree of Displacement of the Distal Chevron Osteotomy in the Treatment of Hallux Valgus
Authors: Badwey Timothy M. , Dutkowsky Joseph P. , Graves Stanley C. , Richardson E. Greer 
Published: March 2013

The purpose of this study was to define the amount of lateral displacement of the chevron osteotomy to obtain a 50% displacement of the capital fragment. While mathematical analyses exist to predict the degree of correction of the intermetartarsal 1–2 angle with a distal metatarsal osteotomy, no guidelines exist regarding the degree of displacement (translation) that allows sufficient bone contact to enhance union and maintain stability of the osteotomy. We have addressed this concern based on anatomical parameters. The mean metatarsal width of the male specimens measured at 15 mm from the medial osteochondral junction was 15.3 mm (range, 13–18 mm; standard deviation, 1.6). The mean width among the female specimens was 14.5 mm (range, 11–18 mm; standard deviation, 1.6). This difference was statistically significant (P = 0.003). From the results of this study, we have concluded that when using a distal metatarsal osteotomy of the chevron type, in 97.5% of the cases the distal fragment can be translated laterally 6.0 mm in males and 5.0 mm in females to displace it 50% of its diameter.
Heel Anatomy for Retrograde Tibiotalocalcaneal Roddings: A Roentgenographic and Anatomic Analysis
Authors: Flock Timothy J. , Ishikawa Susan , Hecht Paul J. , Wapner Keith L. 
Published: March 2013

There is an increased interest in load-sharing devices for tibiotalocalcaneal arthrodesis. Although the neurovascular anatomy of the heel has been well described, the purpose of this study is to consider heel anatomy as it relates to plantar heel incisions and to well-defined fluoroscopic landmarks to prevent complications during these procedures. Twenty lateral radiographs of normal feet while standing were evaluated by two observers. The distance from the calcaneocuboid (CC) joint to a line parallel to the center of the intramedullary canal of the tibia was calculated. In the second part of the study, 14 dissections of the arterial and neural anatomy were performed. The distances from the CC joint to structures crossing the heel proximal to the CC joint were studied. In the 20 standing radiographs, the mean distance from the CC joint to the middle of the intramedullary canal of the tibia was 2.1 cm (standard deviation, 0.55 cm). In the dissections, the only artery or nerve found to cross the plantar surface proximal to the CC joint was the nerve to the abductor digiti quinti (NAbDQ). The mean distance from the CC joint to the NAbDQ was 3.1 cm (standard deviation, 1.36 cm). Assuming reaming to 12 mm, NAbDQ would be at risk 42% of the time. We recommend careful dissection of the heel during retrograde roddings to avoid damage to NAbDQ and subsequent neurogenic heel pain.
Pedodynographic Measurements After Forefoot Reconstruction in Rheumatoid Arthritis Patients
Authors: Dereymaeker Greta , Mulier T. , Stuer P. , Peeraer L. , Fabry G. 
Published: March 2013

From January 1987 to December 1992, 38 patients (59 feet) with rheumatoid arthritis underwent reconstruction of the forefoot using Keller-Lelièvre arthroplasty of the first metatarsophalangeal joint and Hoffman resection of the lesser metatarsal heads. The average age of the patients was 61.3 years, with both feet involved in 21 patients and 17 with single foot involvement. The aim of our study was to evaluate the results both on a functional and an objective basis using dynamic and static pedodynographic measurements. Attention was given to dynamic pressure measurements under the metatarsal heads, the center of pressure distribution, gait analysis, and peak loads taken on different areas of the forefoot during normal walking. Correlations were made between these measurements and symptoms. After a mean follow-up time of 35 months, the clinical results were satisfactory in 54%, satisfactory with some reservations in 39%, satisfactory with major reservations in 3%, and unsatisfactory in 3% of patients.
Revision Ankle Fusion Using Internal Compression Arthrodesis with Screw Fixation
Authors: Anderson John G. , Coetzee J. Chris , Hansen Sigvard T. 
Published: March 2013

We reviewed 20 revision ankle fusions performed using internal compression arthrodesis with screw fixation. Clinical, functional, and radiographic results were measured at an average follow-up of 30 months (range, 12–50 months). The reasons for the index procedures were nonunion in 11, malunion in 7, infected nonunion in 1, and nonunion associated with avascular necrosis of the talus in 1 case. Fusion occurred in 15 of 20 patients. Two additional patients obtained fusion after subsequent procedures, for a final union rate of 85%. The average time to fusion was 6 months (range, 2–32 months). Nineteen additional operations were necessary in 12 patients, including three amputations for chronic infection (two infected nonunions and one chronic osteomyelitis). All but one patient had a plantigrade limb at follow-up. Seventeen of 20 patients were satisfied with their ultimate outcome, including all three patients with amputations. The three dissatisfied patients were bothered by chronic pain. Revision ankle fusion for nonunion or malunion using internal compression arthrodesis with screw fixation is beneficial for most patients. It is a technically demanding procedure that is associated with a high complication rate. Many patients can be expected to have residual pain. We emphasize the need for accurate alignment and early, aggressive treatment of infectious complications. Amputation should be considered a viable option to improve functional outcome in patients with solid, well-aligned fusions who are disabled by severe chronic pain.
Arthrodesis of the First Metatarsophalangeal Joint to Salvage Failed Silicone Implant Arthroplasty
Authors: Hecht Paul J. , Gibbons Michael J. , Wapner Keith L. , Cooke Chris , Hoisington Samuel A. 
Published: March 2013

Between 1987 and 1992, all patients presenting to the senior author with a symptomatic failed silicone implant arthroplasty refractory to conservative treatment were converted to a metatarsophalangeal joint arthrodesis. Internal fixation was achieved with either dual intramedullary threaded Steinmann pins or an obliquely placed AO compression screw and a three- or four-hole one-third tubular dorsal neutralization plate. Bone grafting was used to maintain hallux length. Successful arthrodesis was achieved in all five feet in patients with rheumatoid arthritis. Subjectively, patients improved from an average of 0.69 before arthrodesis to 4.89 after arthrodesis. The average walking tolerance improved from 1.11 to 4.80, and the overall level of satisfaction improved from 0.0 to 4.79. The patient's ability to wear shoes improved from 0.87 to 3.1. Successful arthrodesis produces a foot that is more functional and durable than excisional arthroplasty. Subjectively, these patients stated that their level of pain, walking tolerance, and overall satisfaction improved significantly after the arthrodesis. Clinically, there was no evidence of transfer lesions, tenderness, or hallux subluxation. Hallux length was well maintained after surgery with bone grafting, but it was more difficult to obtain the alignment goals. The average postoperative metatarsophalangeal dorsiflexion angle was 15.6° and the first metatarsophalangeal angle was 3.1°. Despite this, patient satisfaction was high. Arthrodesis of the first metatarsophalangeal joint using a bone graft to salvage failed silicone implant arthroplasty produces acceptable subjective and radiographic results. Although technically demanding, it provides long-term stability to the hallux, restores weightbearing, and allows for maintenance of a propulsive gait. We recommend this procedure instead of an excisional arthroplasty to maintain high level of function and overall patient satisfaction.
Fastest Reduction of Posttraumatic Edema: Continuous Cryotherapy or Intermittent Impulse Compression?
Authors: Stöckle U. , Hoffmann R. , Schütz M. , von Fournier C. , Südkamp N.P. , Haas N. 
Published: March 2013

Sixty patients with foot or ankle trauma were randomized and treated in three groups. In intermittent impulse compression, an air pad under the foot was inflated every 20 seconds, thus activating the venous foot pump. In continuous cryotherapy, ice water circulates between the ice box and the cold pad. The ice water was changed once per day. In standard therapy, the injured extremity was treated with cool packs, which were changed 4 times per day. Beginning at admission, every 24 hours the circumference was measured around the ankle, midfoot, and forefoot. After 24 hours of treatment, there was a 47% reduction in swelling with the A-V Impulse System, 33% with continuous cryotherapy, and 17% with cool packs. After 4 days of postoperative treatment, the A-V Impulse System reduced the swelling by 74% versus 70% with continuous cryotherapy and 45% with cool packs. Both new methods are preferable to cool packs. Because of the better preoperative results, the A-V Impulse System proved to be the most effective device.
Hallux Valgus in Men: Effect of the Distal Metatarsal Articular Angle on Hallux Valgus Correctiong
Authors: Coughlin Michael J. 
Published: March 2013

The results of hallux valgus correction were reviewed for 34 male patients (41 feet). The severity of the preoperative deformity determined the operative technique of correction. A distal soft tissue procedure with proximal first metatarsal osteotomy was performed in 30 patients (35 feet) with an average correction of the hallux valgus angle of 22°. A chevron procedure was performed in five cases and a McBride procedure in one other case, all with less severe deformities. Complications included one deep wound infection, one broken screw at the metatarsal osteotomy site, and three cases of hallux varus. No patients underwent reoperation. Undercorrection was noted in 10 of 35 cases (29%) where a distal soft tissue procedure with proximal first metatarsal osteotomy was performed. A nonsubluxated (congruent) metatarsophalangeal (MTP) joint associated with a hallux valgus deformity was present in 15 of 41 (37%) of all cases and 10 of 35 (29%) of cases that underwent a distal soft tissue procedure with proximal metatarsal osteotomy (DSTR with PMO). A subluxated (noncongruent) MTP joint associated with hallux valgus was present in 26 of 41 (63%) of all cases and 25 of 35 (71 %) of cases undergoing a DSTR with PMO. There was a highly significant difference in the average distal metatarsal articular angle (DMAA) as measured in the nonsubluxated (congruent) MTP joints (20.7°) and the subluxated (noncongruent) MTP joints with hallux valgus (10°) ( P = 0.0001). The average distal metatarsal articular angle for all cases undergoing DSTR with PMO was 13°. When the postoperative hallux valgus angle was compared with the DMAA, the average residual hallux valgus angle was 10.1°. With a subluxated (noncongruent) first MTP joint with hallux valgus (a low DMAA), the percent of hallux valgus correction (hallux valgus correction [in degrees])preoperative hallux valgus deformity [in degrees]) was 77%. In patients with a nonsubluxated (congruent) first MTP joint with hallux valgus (a high DMAA), the percent correction was 46%, an almost twofold difference in percent correction. There was a close correlation between the preoperative DMAA and the postoperative hallux valgus angle in both the subluxated and congruent subgroups ( P = 0.0003). With an intra-articular repair (a DSTP with PMO), the magnitude of correction of a hallux valgus deformity is limited at the MTP joint by the distal metatarsal articular angle.
Combination Chevron Plus Akin Osteotomy for Hallux Valgus: Should Age Be a Limiting Factor?
Authors: Tollison Michael E. , Baxter Donald E. 
Published: March 2013

Current literature consistently precludes the chevron osteotomy for bunion correction in patients older than age 50 years. We retrospectively reviewed 47 patients (73 bunions) with an average age of 62 years (range, 55–81 years old) who had a chevron-Akin double osteotomy. The mean follow-up was 4 years, 6 months (range, 2 years, 3 months to 8 years, 2 months). The overall satisfaction rate was 95%. No significant pain or stiffness in the first metatarsophalangeal joint occurred in comparison with other bunion procedures. Radiographic results were better for patients with a preoperative intermetatarsal angle of less than 15° and tibial sesamoid position of less than or equal to 2. We disagree with the current recommendation that age older than 50 years is a contraindication to a chevron procedure. The Akin osteotomy adds additional intraoperative correction of the hallux angulation and rotation; thus, the chevron-Akin double osteotomy is a useful combination procedure. We recommend this procedure for the mild to moderate bunion deformity even in elderly patients.
Stress Radiography and Stress Examination of the Talocrural and Subtalar Joint on Helical Computed Tomography
Authors: van Hellemondt F.J. , Louwerens J.W.K. , Sijbrandij E.S. , van Gils A.P.G. 
Published: March 2013

The main objective of this study was to compare subtalar inversion stress views using the Brodén view with inversion stress views on helical computed tomography (CT). One of the drawbacks of routine radiography is the imaging of three-dimensional structures in a two-dimensional plane. We investigated whether the use of helical CT would lead to a more objective and clearer measurable method to determine the amount of tilt in the subtalar joint. A group of 15 patients with unilateral chronic instability complaints and clinically suspected subtalar instability was examined. The contralateral asymptomatic foot was used as control. A variable amount of subtalar tilt (range, 4° to 18°) was demonstrated in all cases on stress radiographs, without finding significant difference between the symptomatic and asymptomatic feet. However, contrary to the findings at the talocrural level, subtalar tilt was found in none of the patients using helical CT. Thus, we now doubt that the tilt seen during stress examination using the Brodén view is the true amount of tilt. It may be that the lateral opening, seen on these radiographs, largely results from imaging two planes that have made a translatory and rotatory movement relative to each other in an oblique direction. It is concluded that the Brodén stress examination might not be useful for screening patients with subtalar instability. Associated anomalies not visible on the radiographs were detected by helical CT. In four cases, narrowing of the articular cartilage and irregular and hypertrophic bone formation at the middle facet joint of the subtalar joints were found. It is likely that these changes cause disturbance of function of this joint and it is suggested that the subjective complaint of instability with “giving way” is not only caused by hypermobility, but can be caused by other disturbances of normal motion.
Etiology, Histopathology, and Outcome of Surgery in Achillodynia
Authors: Rolf Christer , Movin Tomas 
Published: March 2013

Fifty-eight patients suffering from achillodynia for a median of 12 months (range, 4–240 months) were analyzed using history, clinical findings, ultrasound findings, histopathology, and surgical outcome. Surgical criteria were daily pain or inability to perform sports activity and failure of nonoperative treatment. There were 34 men and 24 women, 31% (18 of 58 patients) of whom had no direct association with sports or vigorous physical activity. Ultrasonography was performed in all cases and showed low echogenous areas (N = 48), increased tendon diameter (N = 40), and/or peritendinous fluid (N = 11). Histopathological evaluation of tendon biopsies, obtained from regions showing pathology at surgery (N = 35), revealed altered fiber structure and arrangement, focal variations in cellularity, extracellular glycosaminoglycans, neovascularization, and/or hyalinization. In no case was inflammatory cell infiltration observed. At a median clinical follow-up of 25 months after surgery, symptoms were decreased in 86% of patients, and 76% had reached a higher activity level compared with the level before surgery. Complications occurred in 13% of operations. In conclusion, achillodynia is not always associated with excessive physical activity. Macroscopic pathologic tendons showed marked histopathologic changes, correlating well with ultrasound findings. Surgical treatment was beneficial in most cases, despite a relatively high complication rate. The etiology and reason for the lack of healing response to rest and nonoperative treatment are unclear.
Chronic Disorders of the Achilles Tendon: Results of Conservative and Surgical Treatments
Authors: Johnston Eric , Scranton Pierce , Pfeffer Glenn B. 
Published: March 2013

We reviewed our results of nonoperative and operative treatment of chronic Achilles tenosynovitis to further define outcomes and treatment parameters. Forty-one patients presented with an average of 14 weeks of Achilles tendon symptoms. All patients received nonsurgical treatment initially, and 21 patients (51%) recovered after an average of 18 weeks of therapy. Three additional patients improved after brisement of the tendon/peritenon interspace. Seventeen of 41 patients eventually underwent soft tissue tenolysis and/or excision of degenerative tendon cysts. Those patients who responded to nonoperative therapy tended to be younger (average age, 33 years) than those who had degenerative tendon changes requiring surgery (average age, 48 years). All surgical patients were able to return to unrestricted activity after 31 weeks (range, 27–48 weeks). We believe 4 to 6 months of nonsurgical therapy is appropriate for middle aged patients or athletes with chronic Achilles tenosynovitis. Those that fail this treatment will improve with a limited debridement of diseased tissue without excessive soft tissue dissection of the tendon.
Walking Pattern of Midfoot and Ankle Disarticulation Amputees
Authors: Pinzur Michael S. , Wolf Brian , Havey Robert M. 
Published: March 2013

Measurements of the vertical component of ground reaction force (GRF) and dynamic center of pressure (COP) were recorded for five subjects with midfoot level amputations and six with Syme's ankle disarticulation amputations. All of the subjects underwent amputation surgery as a consequence of peripheral vascular disease and diabetes. GRF measurement was accomplished with the F-Scan system (Tekscan, Boston, MA). Each group exhibited a consistent, reproducible pattern of gait. Subjects with Syme's ankle disarticulation initiated initial loading response, i.e., heel strike, with a concentration of GRF in the center of the anatomic heel. COP progressed along the midline to the center of the anatomic forefoot, where GRF was concentrated at push-off. Midfoot amputees initiated loading at the lateral-posterior heel. COP progressed medially to the midline, where it progressed distally to the level of the distal residual limb (proximal metatarsal metaphyses). It then shifted medially under the base of the first metatarsal, where a small concentration of GRF occurred at push-off, similar to the normal foot. These findings explain the decreased magnitude of propulsion seen in midfoot level amputees and may explain the seemingly paradoxical increased metabolic cost of walking observed in midfoot amputees as compared with Syme's ankle disarticulation amputees.
Valgus Stress Radiography in Normal Ankles
Authors: Leith Jordan Michael , McConkey J.P. , Li David , Masri Bassam 
Published: March 2013

Deltoid ligament injury is thought to be rare. Signs of complete rupture of the deltoid ligament may be subtle or interpreted as another injury condition and thus are often missed acutely. No standardized method has been created to evaluate medial ligament insufficiency in acute or chronic laxity. To establish a diagnostic test for suspected isolated ruptures of the deltoid ligament, 32 subjects with no previous ankle injury underwent valgus stress radiography and nonstressed radiography of both ankles. Stress radiography in this study showed that there is a measurable but minimal range of talar tilt on valgus stress in previously uninjured ankles. This study provides the basis for diagnosis of the rare isolated rupture of the deltoid ligament of the ankle.
Alterations in Talar Morphology Associated with Adult Flatfoot
Authors: Anderson John G. , Harrington Richard , Ching Randal P. , Tencer Allan , Sangeorzan Bruce J. 
Published: March 2013

To gain a better understanding of the anatomy of the factors contributing to symptomatic flatfoot, we compared the shape of the talus in feet that were flat to that in control tali from feet with a normal arch. Computed tomographic (CT) scans were performed on 9 adult patients with 10 symptomatic flatfoot deformities. CT scans of 10 feet being evaluated for acute trauma not involving the talus were randomly selected as controls. Flatfoot tali tended to be of greater overall length than the control tali, and this difference was not statistically significant. Statistically significant differences were found when comparing ratios of talar length with talar width ( P = 0.011), talar length with talar height ( P = 0.001) (they were long relative to their height and width), and head length with head width ( P = 0.001) for individual tali from the two groups. The tali from the flatfoot group were narrower in width and shorter in height when compared with overall length and had heads that were more elongated in the transverse plane than tali in feet with a normal appearance. Clinical correlation: When performing surgical correction of a flatfoot in an adult, appearance of the foot rather than standard radiographic parameters should be used to judge the reduction. The altered shape of the bone may alter the standard radiographic parameters.
Clinical Characteristics and Outcome in 223 Diabetic Patients with Deep Foot Infections
Authors: Eneroth Magnus , Apelqvist Jan , Stenström Anders 
Published: March 2013

Clinical characteristics and outcome in 223 consecutive diabetic patients with deep foot infections are reported. Patients were treated by a multidisciplinary diabetic foot-care team at the University Hospital, Lund, Sweden, and were prospectively followed until healing or death. About 50% of patients lacked clinical signs of infection, such as a body temperature > 37.8°C, a sedimentation rate > 70 mm/hour, and white blood cell count (WBC) > 10 × 10 9 /liter. Eighty-six percent had surgery before healing or death. Thirty-nine percent healed without amputation; 34% healed after a minor and 8% after a major amputation. Sixteen percent were unhealed at death, and 3% were unhealed at the end of the observation period. Of those unhealed at death or follow-up, 4 patients had had a major and 11 a minor amputation. After correction for age and sex, duration of diabetes < 14 years, palpable popliteal pulse, a toe pressure > 45 mmHg, and an ankle pressure > 80 mm Hg, absence of exposed bone and a white blood cell count < 12 × 10 9 /liter were all related to healing without amputation in a logistic regression analysis. We conclude that although only 1 in 10 had a major amputation, nearly all diabetic patients with a deep foot infection needed surgery and more than one third had a minor amputation before healing or death in spite of a well-functioning diabetic foot-care team responsible for all included patients.