Primary total knee arthroplasty in patients with Parkinson's disease: analysis of outcomes.

The prevalence of Parkinson's disease is expected to rise. We evaluated the short-term clinical outcomes following primary Total Knee Arthroplasty (TKA) in a group of patients with Parkinson's disease in a case controlled study. Within the review period 32 TKAs were implanted in patients with Parkinson's disease and 33 TKAs were implanted in an age-matched control group (mean age: 73 years). Pre-operatively there were no between-group differences in Knee Society Score, Pain score, Knee Society Function Score or range of movement. Knee Society Score (KSS) improved in both groups post-operatively with no significant between-group differences (p = 0.707). Pain score also improved in both groups. There was no functional improvement following TKA in the Parkinson group. Total Knee Arthroplasty provided excellent pain relief in patients with Parkinson's disease with an acceptable complication profile, although functional ability did not improve.