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General Orthopaedics

Limb salvage in fibular hemimelia: overview of 29 cases

British Orthopaedic Association 2012 Annual Congress



Abstract

Fibular Hemimelia is not just a fibular anomaly but there is entire limb involvement with varied expression in each segment. Factors which we have considered in treatment are the amount of fibula present, percentage of shortening, tibial and leg deformity and foot deformity. Residual or recurrent foot deformity is the prime reason for unsatisfactory results, so we have used Paley's classification which takes into consideration foot deformity. Our series is of 29 cases, Paley type I-7, Type II-6, Type III-16 and none of type IV. Tibial lengthening (+/−) bow correction was performed in 28 cases. Supramalleolar osteotomy was done in 4 cases. In foot, soft tissue release only was done in 6 cases and soft tissue release with osteotomy (subtalar or calcaneal) was done in 14 cases. Amputation was done in 2 cases. Age ranged from 11 months to 16 years. Mean follow up was 4.2 years. Mean lengthening was 3.5 cm. Desires lengthening was achieved in 21/29 cases and plantigrade foot was achieved in 16/29 cases. Complications faced were recurrence of foot deformity, knee valgus, knee fixed flexion deformity, knee subluxation and pin tract problems. Less than 3 rays and more than 25 cm of limb length discrepancy were poor prognostic factors. We had 7 excellent, 16 good and 6 poor results. To conclude, it is difficult to achieve the aim of plantigrade foot and limb length equality in all cases but radical surgery with foot correction and tibial lengthening can give good results.