FP9.7 Joint Contact Stress is Higher in Untreated Dysplastic Hips that Progress to Osteoarthritis

Clicks: 11
ID: 331302
2026
Free PDF
Article Quality & Performance Metrics
Overall Quality
Not rated
Combines reader engagement with the AI quality analysis. This article has not been analysed, so there is no overall score — reader engagement is measured and shown alongside.
AI Quality Assessment
Not analyzed
Readership in this journal
Emerging

Ranked #235 of 444 articles by views in Journal of hip preservation surgery

Most read Least read

Bar heights use a square-root scale. Only the 120 most-read articles are drawn; the journal has 444 in total.

Mint this article as an NFT
Not yet minted

Create a permanent, verifiable on-chain record of this article on the Scimatic Network. The NFT is held in your Journament account, and you can withdraw it to your own wallet at any time.

5 SUSD one-off · no wallet required
Sign in to mint
Abstract
Abstract ICLB09 - The Revision Playbook: Advanced Execution and Technical Rescues in Failed Preservation, Session Room 6 (BMCC Level 3), October 9, 2026, 10:30 - 12:30 Objectives Although untreated hip dysplasia commonly results in premature hip osteoarthritis (OA), there are some dysplastic hips that function well into old age without developing OA. Current clinical tools have limited ability to predict failure of dysplastic hips. The goal of this work was to determine if computationally derived joint contact stress can predict development of hip osteoarthritis beyond 10 years in contralateral, untreated hips of patients who underwent unilateral periacetabular osteotomy (PAO). Methods Patients who underwent a unilateral PAO to correct hip dysplasia at our institution between 2002 and 2010 were retrospectively identified from an established database. All patients had undergone preoperative, bilateral CT scan. These individuals were contacted to provide laterality-specific patient-reported outcomes (PROs) and information about conversion to total hip arthroplasty (THA) for their contralateral, non-PAO-treated hip. Hip joint contact mechanics were calculated from patient-specific, CT-based discrete element analysis models and related to joint failure, defined as either mHHS≤70 or conversion to total hip arthroplasty. Results 55 patients completed follow-up for the untreated contralateral hip. 31/55 (56%) of the contralateral hips modeled were dysplastic (lateral center edge angle of Wiberg (LCEA) <20 degrees), 13/55 (24%) were borderline dysplastic (LCEA 20-25 degrees), and 11/55 (20%) had LCEA >25. 17/55 hips (31%) had failed at an average 17-year follow-up (±3.9 years). Failed contralateral hips had significantly higher mean (p=0.048) and peak (p=0.038) contact stress and tended to have smaller contact area (p=0.130). There were no significant differences in radiographic measures of dysplasia between preserved and failed hips. Among just the dysplastic hips (n=31), 42% (13/31) failed, and again these hips tended to have higher peak and mean contact stress and contact stress exposure, but the elevations relative to the preserved dysplastic hips were not statistically significant. Conclusion High contact stress appears to be better related to development of osteoarthritis after an average of 17 years than radiographic measures. Patients with higher contact stress appear to be at greater risk for painful OA development in their contralateral, non-PAO-treated hip.
Reference Key
openalex_W7220435322 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Dominic J. L. Rivas, Michael Willey, Ashley Kochuyt, Taylor Murray, Holly Aitken, Natalie Glass, Jessica E. Goetz
Are you one of these authors? Claim your profile
Journal Journal of hip preservation surgery
Year 2026
DOI
10.1093/jhps/hnag043.071
URL
https://doi.org/10.1093/jhps/hnag043.071
Keywords Keywords not found

Citations

No citations found. To add a citation, contact the admin at info@scimatic.org

Comments

No comments yet. Be the first to comment on this article.