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Chrisman-Snook ankle ligament reconstruction outcomes--a local experience
1Department of Orthopaedic Surgery, Alexandra Hospital 378 Alexandra Road, Singapore 159964. mat_cheng@rocketmail.com
Introduction:
Chrisman-Snook reconstruction is a surgical method of treating chronic lateral ankle instability. This study aims to examine the outcome and possible factors including joint hypermobility that may influence the outcome in our local population.
Materials And Methods:
Twenty-four ankles with chronic lateral ankle instabilities were treated with the Chrisman-Snook reconstruction procedure between May 1995 and November 1997. Fifteen were available for review at an average follow-up period of 35.3 months, ranging from 26 to 51 months. The patients were young and the average age was 24 years. The lateral ligaments were reconstructed by rerouting half the peroneus brevis tendon, based distally, through the lateral malleolus and anchoring it to the calcaneum. Functional results were assessed using the Kaikkonen ankle stability score. Joint hypermobility was assessed by the Beighton et al score.
Results:
Excellent results were achieved in ten cases, good in four, and fair in one. None had poor results. Best outcomes tended to occur in patients with joint hypermobility. Complications included decreased sensation in a small area of the lateral foot.
Conclusions:
Chrisman-Snook reconstruction is a surgical option for young patients who have failed conservative treatment for chronic ankle instability. In our local population with a higher incidence of joint hypermobility, it gave good results with few serious complications.
