Arthrodesis of the first metatarsophalangeal joint using convex and concave drills. A report on 50 cases.

The authors report their results after arthrodesis of the first metatarsophalangeal joint (MP) performed in 50 cases including 18 rheumatoid feet, 18 major hallux valgus deformities and 14 recurrent deformities. Preparation of the bone ends for arthrodesis was achieved using convex and concave drills and fixation was done with an axial screw. The patients were evaluated after an average of 12 months, using Kitaoka's score. Eighty per cent were very satisfied, 16% were satisfied and 4% were dissatisfied. Ninety six percent reported no pain over the MP joint of the hallux, and none complained of metatarsalgia. Return to activities was normal in 80% of cases. Radiographs showed non-union in six cases; they did not show interphalangeal osteoarthritis in any instance.