Total Hip and Knee Arthroplasty in Patients with Multiple Sclerosis.

Background: Hip and knee replacements for osteoarthritis are established procedures for improving joint pain and function, yet their safety in patients with multiple sclerosis (MS) is unknown. Patients with MS face unique surgical challenges due to underlying neurologic dysfunction. Current literature on arthroplasty in MS is limited to case reports focusing on adverse events.

Methods: Of 40 identified patients who underwent hip or knee replacement, 30 had sufficient data for inclusion. We reviewed their medical records and recorded reasons for surgery, age at surgery, MS characteristics, surgical complications, and ambulatory aid status before and after surgery. We supplemented medical record review with questionnaires regarding preoperative and postoperative pain and satisfaction with surgical outcomes.

Results: Median follow-up was 26 months. Complications of surgery were reported in ten patients (33%), mostly mild and self-limited, although four patients (13%) required repeated operation. Six patients (20%) reported improvements in ambulatory aid use compared with presurgery baseline, ten (33%) worsened, and 14 (47%) were unchanged. In 20 patients who completed the questionnaire, mean ± SD joint pain scores (on 0-10 scale) decreased from 8.6 ± 2.0 preoperatively to 2.9 ± 2.4 postoperatively (P < .001). Five patients (25%) were free of joint pain at last follow-up.

Conclusions: These results suggest that pain reduction is a realistic outcome of total knee or hip arthroplasty in people with MS and that improved functional gait outcomes are possible in some patients. Prospective, multicenter, collaborative studies are needed to optimize selection and improve outcomes in people with MS considering arthroplasty.