Salvage of Jeopardized Total-Knee Prosthesis

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Abstract
Total-knee arthroplasty has provided many patients with excellent long-term functional results. However, exposure of a total-knee replacement usually eventuates in failure. The relatively superficial location of the prosthesis, the need for early active motion, previous surgical incisions, and a variety of systemic factors may militate against early wound healing. Restoration of well-vascularized soft-tissue cover can salvage an otherwise disastrous situation. The authors recommend early operative intervention upon observation of wound breakdown, devitalized skin edges, or significant subcutaneous infection leading to necrotic overlying skin. The operative procedure found to salvage the majority of prostheses consists of adequate debridement, antibiotic irrigation (of the joint, if exposed), and coverage with a well-vascularized muscle flap, preferably the medial gastrocnemius muscle. The operative technique and ultimate long-term outcome are reviewed based on experience with 10 consecutive patients presenting with a jeopardized knee prosthesis. Follow-up ranged from 1 to 6 years. Representative case histories are presented.

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