Abstract
Purpose : We retrospectively reviewed outcomes, complications and their influencing factors after distraction osteogenesis for fourth brachymetatarsia. Materials and Methods : We performed twenty-two cases of metatarsal lengthening with external fixator in sixteen patients for fourth brachymetatarsia from May 1998 to May 2000. At the final follow-up, AOFAS scores were awarded according to stiffness, pain, function, alignment and the satisfaction of patients. Results : On average, the gain in length was 16.5 mm, the percentage of lengthening 38.9%, and the healing index 72.9 days/cm. There were some complications including subluxation of the metatarsophalangeal joint in 7 cases, stiffness in 5 cases, pin tract infection in 2 cases, and angular deformity in 3 cases. Those having a percentage of lengthening of less than 40% and those involving only the metatarsus had better results. Most patients were satisfied with the corrected result, though one unsatisfied patient underwent revision surgery. Conclusion : Even though distraction osteogenesis for fourth brachymetatarsia is effective, excessive lengthening in patients involving both metatarsus and phalange can produce minor complications.
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