ArticleBMC musculoskeletal disorders2023
Stricter correction of leg length discrepancy is required during total hip arthroplasty in patients with ankylosing spondylitis.
Article in BMC musculoskeletal disorders, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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3 citing papers in PubMed.
- Perceived leg length discrepancy after total hip arthroplasty is associated with global spinopelvic coronal flexibility.Archives of orthopaedic and trauma surgery · 2026Article
- Postoperative complications rates and outcomes following total hip arthroplasty in patients with ankylosing spondylitis: A systematic review.Journal of orthopaedics · 2025Review
- Proteomics signatures associated with hip arthropathy in ankylosing spondylitis.Frontiers in medicine · 2025Article
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6 authors.
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Abstract
backgroundPatients with ankylosing spondylitis often have fusions in the spine and sacroiliac joints, such that it is difficult to compensate for leg length discrepancy (LLD).
methodsWe retrospectively measured the LLD after total hip arthroplasty (THA) in 89 patients with ankylosing spondylitis from June 2004 to February 2021 at our institute. Patients were divided into two groups based on an LLD of 5 mm. Clinical outcomes were investigated using the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) and Harris Hip Score (HHS). In addition, these points are investigated: patient satisfaction with the operation; whether there was a current difference in leg length; and whether there was a limping gait.
resultsThe group with an LLD of 5-10 mm rather than < 5 mm had significantly worse WOMAC pain and stiffness. The survey revealed statistically significant differences in patient satisfaction with the operation, limping gait, and whether back pain had improved.
conclusionFor patients with ankylosing spondylitis, reducing the LLD to < 5 mm, which is more accurate than the current standard of < 10 mm, may produce greater improvement in clinical outcomes after hip arthroplasty.
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