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[Risk factors for skin necrosis around incision after total knee arthroplasty]
Zeng-Xin Gao1, Gui-Xing Qiu, Xi-Sheng Weng
1Department of Orthopedic Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100730, China.
Objectives:
To analyze the risk factors of skin necrosis around incision after total knee arthroplasty, and explore measures for prevention and treatment.
Methods:
From January 2003 to November 2005, skin necrosis around incision occurred to 15 out of the 382 cases (494 knees) treated by total knee arthroplasty. The data of the 15 cases were analyzed. Preoperative hospital for special surgery knee score (HSS) was 60 points on average.
Results:
All wound were healed after debridement. However, the recover time was over 3 weeks longer than the healing time by first intention. Extensor weakness with anterior knee pain appeared among 9 patients, and 6 months later, the symptoms improved obviously. At two years follow-up, the average range of motion was 92 degrees, and the average HSS improved to 86. There were no secondary infection and deformity in the group.
Conclusions:
It is the key to prevent skin necrosis around incision during total knee arthroplasty that surgeons must accurately grasp technique of minimally invasive surgery for total knee arthroplasty. To acquire satisfactory outcome, it is imperative to perform debridement as soon as possible while the skin necrosis happens. At the same time, it is important to persist in doing adequate functional exercises throughout the period of treatment.
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