Roger Mann Award 1995. Capsular interposition arthroplasty for severe hallux rigidus.

Thirty patients (37 feet) with severe hallux rigidus underwent resection arthroplasty of the first metatarsophalangeal joint with our modification (reattachment of the extensor hood and extensor brevis to the flexor hallucis brevis as a capsular interposition arthroplasty, with minimal bone resection). Pain and function were significantly improved. Transfer metatarsalgia was not seen. All patients had at least 4/5 plantarflexion strength and averaged 50 degrees of dorsiflexion. In patients with severe hallux rigidus and nearly equal length of first and second metatarsals, capsular interposition arthroplasty offers a surgical option that relieves pain without sacrificing motion or strength.