Abstract
Patients with hemophilia (PWHs) may experience spontaneous or traumatic bleeding episodes. Recurrent bleeding can lead to end-stage hemophilic arthropathy and total knee replacement (TKR) provides an effective treatment. The aim of this study is to investigate outcomes in PWHs who undergo TKR. A systematic review and meta-analysis was performed according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. Study outcomes included patient-reported functional outcomes, implant survivorship, and complications. Subgroup analysis was performed assessing the effect of recombinant prophylaxis medication by comparing studies that included only TKRs performed after the year 2000 (period A), to those that included TKRs before 2000 (period B). Twenty-eight studies were included, with a total of 1210 TKRs performed in 917 PWHs. The mean age of patients was 38.5 years (standard deviation 5.1) with a mean length of follow-up of 7.1 years (standard deviation 2.9). The total complication rate was 28.7%, with 19.3% requiring a further procedure. Hospital for Special Surgery Knee Score improved by 44.6 points (confidence interval 38.9-50.4) and Knee Society Score function improved by 35.9 points (confidence interval 30.1-41.8). Total range of motion improved by 22.3°. The most common complication was post-operative hemarthrosis (7.6%, 92 TKRs). Deep infection (6.2% vs 3.9%) and aseptic loosening (3.8% vs 2.1%) rates fell between period B and period A. TKR in PWHs is a successful procedure improving function, reducing pain, and improving range of motion. PWHs undergo TKR at a younger age and have a higher risk of complications, though contemporary treatment has reduced these risks. PWHs can expect similar survivorship to the general population.
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