Implant survival and patient-reported outcomes after total hip arthroplasty in young patients with juvenile idiopathic arthritis.

Juvenile Idiopathic Arthritis (JIA) is a common rheumatologic disease that frequently involves the hip joint and requires treatment with total hip arthroplasty (THA). A retrospective study with prospective follow-up was conducted to determine implant survival and patient-reported outcomes in JIA patients aged 35 or younger treated with THA. This study included 56 patients, and the mean time to follow-up was 12 years. The 10-year implant survival was 85%, and implant survival was significantly longer in older patients (P value=0.04). Hip disability and osteoarthritis outcome (HOOS) scores were favorable at follow-up, but significantly worse in women and patients with custom implants or history of revision THA. Overall, patient factors and implant characteristics predict implant survival and outcomes after THA in young patients with JIA.