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Short-term clinical and radiologic results of the scarf osteotomy: what factors contribute to recurrence?

The present retrospective investigation aimed to determine the factors associated with recurrence of hallux valgus deformity after scarf osteotomy in 50 feet in 43 consecutive patients. We hypothesized that hallux abductovalgus after scarf osteotomy recurs because of the presence of preoperative joint incongruity. The clinical and radiographic findings, including the weightbearing radiographic hallux valgus angle, first intermetatarsal angle, distal metatarsal articular angle, first metatarsophalangeal joint congruence, American Orthopaedic Foot and Ankle Society scores, and pain measured on a visual analog scale, and logistic regression analysis were used to analyze the association of the independent variables with the recurrence of deformity. The mean age of the patients was 47.7 (range 21 to 65) years, and the mean follow-up duration was 26.2 (range 18 to 36) months. The mean American Orthopaedic Foot and Ankle Society scores improved from 50.7 ± 4.9 to 88.7 ± 7.9, and the visual analog scale pain scores improved from 7.5 ± 1.1 to 2.4 ± 1.0 (p < .05). The changes in the radiographic measurements were also statistically significant. Of the 50 feet, 5 (10%) developed recurrent hallux abductovalgus, each of which occurred in feet that had displayed a first metatarsophalangeal joint incongruity on preoperative radiographs. The incongruity was observed to be a statistically significant risk factor for recurrence according to the regression models. From our experience with the patients analyzed in the present report, we believe that first metatarsophalangeal joint congruity should be given particular attention when surgical correction of hallux abductovalgus is undertaken.

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