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Posttraumatic Hip Osteoarthritis After Pelvic Ring Injuries.
James D Brodell1, Hashim J F Shaikh1, Thomas F Rodenhouse1
1Department of Orthopaedics and Physical Performance, University of Rochester Medical Center, Rochester, NY; and.
Journal of Orthopaedic Trauma
|January 17, 2025
Summary
Posttraumatic hip osteoarthritis is common after pelvic ring injuries, especially with unstable fractures. More severe injuries correlate with higher rates of posttraumatic osteoarthritis (PTOA).
Area of Science:
- Orthopedic Surgery
- Radiology
- Trauma Care
Background:
- Posttraumatic osteoarthritis (PTOA) after acetabulum fractures is well-documented.
- Less is known about hip osteoarthritis following pelvic ring injuries.
- Pelvic ring injuries can lead to long-term hip joint complications.
Purpose of the Study:
- To determine the frequency of hip osteoarthritis after pelvic ring injuries.
- To investigate the association between injury severity and PTOA development.
- To compare PTOA rates in stable versus unstable pelvic ring injuries.
Main Methods:
- Retrospective cohort study at an academic Level I Trauma Center.
- Included 211 patients with OTA/AO type A, B, or C pelvic ring injuries and >= 1 year radiographic follow-up.
- Assessed hip osteoarthritis using Tönnis classification and compared progression based on injury stability and Young-Burgess classification.
Main Results:
- 34.5% of patients with unstable pelvic ring injuries showed osteoarthritis progression compared to 6.2% with stable injuries (P < 0.001).
- More severe pelvic ring injuries (e.g., LC III) had higher rates of PTOA (44.4%) than less severe injuries (e.g., LC I, 11.1%) (P < 0.001).
- No significant difference in osteoarthritis progression was noted between operative and nonoperative management groups.
Conclusions:
- Posttraumatic osteoarthritis is a significant complication following pelvic ring injuries.
- Unstable pelvic ring injuries are associated with a higher rate of PTOA progression compared to stable injuries.
- Injury severity is a key factor in the development of posttraumatic hip osteoarthritis.
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