Total knee arthroplasty for severe haemophilic arthropathy: long-term experience in Taiwan

C C Chiang, P Q Chen, M C Shen, W Tsai
Haemophilia: the Official Journal of the World Federation of Hemophilia 2008, 14 (4): 828-34
A number of articles have investigated the outcomes of total knee arthroplasty (TKA) and causes of prosthetic failure in patients with haemophilic arthropathy. The aims of this retrospective study were to evaluate the clinical and functional outcomes of TKA and causes of prosthetic failure in patients with haemophilic arthropathy. A consecutive series of 35 TKA in 26 patients with haemophilic arthropathy were performed between November 1985 and October 2006 by one experienced surgeon. The mean age at index operation was 34.2 years old (range: 23.4-47 years) and the mean follow-up duration was 82.2 months (range: 12-218 months). Clinical assessment included range of flexion, range of extension and total range of motion (ROM). Functional evaluation comprised pain score and functional score by Dr. Insall's Knee Society Clinical Rating System. The average preoperative ROM was 63.2 degrees with flexion contracture 15 degrees , whereas the average postoperative ROM was 79.8 degrees with flexion contracture 5.5 degrees . Improvement of range of flexion was 7.1 degrees (P = 0.16); improvement of range of extension was 9.5 degrees (P < 0.01). Average increase of total ROM was 16.6 degrees (P = 0.02). Pain score by Knee Society was 7.1 points preoperatively and 48 points postoperatively (P < 0.01); functional score by Knee Society was 42 points preoperatively and 77.1 points postoperatively (P < 0.01). Three patients received manipulations because of an inadequate ROM. Three infection episodes were treated with debridement and one of them received arthrodesis after removal of prosthesis. Two patients received revision TKA. One of them was because of loosening of femoral component. The other one received revision TKA because of insert wear. Though improvement in range of flexion is insignificant in haemophilic arthropathy of knee after TKA, it showed significant increase in total ROM after operation, especially in improvement of flexion contracture. It also showed great pain relief and significant functional gain. Under the circumstance of acceptable infection rate and complication, TKA is an effective method to achieve pain relief and gain better function in patients with haemophilic arthropathy of knee. The data of this study confirm those previously published by many authors.

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