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Total hip Arthroplasty in Ankylosing Spondylitis Mojieb Manzary


Hip Involvement in patients with Ankylosing Spondylitis(AS) is erosive rather than new bone formation as it’s in the spine of AS.

The involvement of hip in AS is an important prognostic factor associated with radiographic progression. Recent data from cohorts showed that patients with juvenile onset not only had higher frequencies of hip involvement but also had a greater need for total hip replacement, as compared with patients with adult onset disease.

The involvement of the hip in patients with preexisting involvement of the spine further compromises their posture and limits their mobility.

Although medical management has improved the outcome and may have the reduced the need for surgery, THA in particular is often required to manage pain and restore function and mobility. It still remains the most effective means to relieve pain and improve ambulation in these patients.

Several important considerations regarding preoperative evaluation and surgical technique need to be adapted to improve the outcome of THAs in this group of patients.