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PERCUTANEOUS DISTAL METATARSAL OSTEOTOMY FOR CORRECTION OF HALLUX VALGUS



Abstract

Introduction: Distal osteotomy of the first metatarsal is indicated in the surgical treatment of mild-to-moderate hallux valgus deformity. The aim of this study was to evaluate the results of a subcapital distal osteotomy of the first metatarsal using a percutaneous technique.

Methods: From 1996 to 2001 118 consecutive percutaneous distal osteotomies of the first metatarsal were performed in 82 patients for the treatment of painful mild-to-moderate hallux valgus. Patients were assessed at a mean follow-up of 35.9 months employing a clinical and radiographic protocol. The American Orthopedic Foot and Ankle Society’s hallux-metatarsophalangeal-interphalangeal scale was used for the clinical assessment.

Results: in 107 of the 118 cases (90.7%), patients were satisfied with the procedure. The mean score obtained in the clinical assessment using the AOFAS scale was 88.2 ± 12.9. The radiographic assessment showed significant changes (P< 0.05) in the values of the hallux valgus angle, first intermetatarsal angle, distal metatarsal articular angle and the sesamoid position at the postoperative assessment compared to preoperative values. Recurrence of the valgus deformity was observed in 3 cases (2.5%), non-painful stiffness of the first metatarsophalangeal joint in 7 (5.9%) and a deep infection resolved by antibiotic therapy in 1 (0.8%).

Conclusions: The percutaneous procedure proved to be a reliable technique for the correct execution of a distal linear osteotomy of the first metatarsal for the correction of painful mild-to-moderate hallux valgus deformity. The clinical results appear to be comparable to those obtainable with the traditional open techniques, with the additional advantages of a minimally invasive procedure, substantially shorter operating times and a reduced risk of complications related to surgical exposure.

Correspondence should be addressed to Ms Larissa Welti, Scientific Secretary, EFORT Central Office, Technoparkstrasse 1, CH-8005 Zürich, Switzerland