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ARTHROSCOPIC SUBTALAR ARTHRODESIS: EARLY RESULTS OF A SERIES OF 22 PATIENTS



Abstract

Arthroscopy of the ankle and subtalar joints are established techniques in foot and ankle surgery. Arthroscopic ankle arthrodesis is well described and is useful in patients with a poor soft tissue envelope. Subtalar fusion is traditionally an open procedure with potentially significant complications but there is little published on arthroscopic subtalar arthrodesis.

22 patients, made up of 9 males and13 females were operated on from March 2004 to present day with 12 to 36 months follow up. Indications for surgery included primary osteoarthritis and degeneration secondary to previous calcaneal fracture, tibialis posterior insufficiency, neurological conditions and previous ankle fusion. 8 Patients had a concurrent arthroscopic ankle fusion and 4 patients also had a talonavicular fusion.

All patients had surgery by the senior author and followed the same postoperative course. Patients were protected in plaster for 12 weeks with gradual increase to fully weightbearing at 6 weeks and x-rays taken at 6 and 12 weeks. Successful outcome was taken as clinical and radiological evidence of fusion.

21 patients (95.5%) achieved fusion by 12 weeks. There has been 1 nonunion but there have been no wound breakdowns, deep infections or other serious complications.

Previous authors have reported variable complication rates and significant rates of delayed and non-unions following open subtalar fusion. These early results suggest that arthroscopic subtalar fusion is a safe and reliable method with a high success rate and a low complication rate.

Correspondence should be addressed to Major M Butler RAMC, Princess Elizabeth Orthopaedic Centre, Royal Devon and Exeter Hospital, Exeter, Devon.

Correspondence should be addressed to Major M Butler, CSOS, Institute of Naval Medicine, Crescent Road, Alverstoke, Hants PO12 2D