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Long-term outcome following total hip arthroplasty: a controlled longitudinal study
Janet Cushnaghan1, David Coggon, Isabel Reading
1University of Southampton, Southampton, UK.
Arthritis and Rheumatism
|December 1, 2007
Summary
Total hip arthroplasty (THA) for osteoarthritis (OA) significantly improves physical functioning long-term. Severe preoperative radiographic features predict better outcomes, while age and sex do not negatively impact results.
Area of Science:
- Orthopedics
- Rheumatology
- Public Health
Background:
- Osteoarthritis (OA) significantly impacts physical functioning and quality of life.
- Total hip arthroplasty (THA) is a common surgical intervention for advanced OA.
- Long-term outcomes and prognostic factors following THA require further investigation.
Purpose of the Study:
- To assess the long-term functional outcomes of THA in OA patients.
- To identify predictors of prognosis after THA for OA.
Main Methods:
- A cohort of 282 THA patients and 295 controls were studied approximately 8 years post-surgery.
- Baseline data included demographics, comorbidity, BMI, SF-36, and radiographic OA severity.
- Follow-up assessed functional status via postal questionnaire; linear regression analyzed predictors of change.
Main Results:
- THA patients showed a median 10-point improvement in physical functioning (SF-36), while controls declined by 10 points (P < 0.0001).
- Mental health improved similarly in both groups.
- Greater preoperative radiographic severity (Croft grade 5) correlated with a larger physical functioning improvement in THA patients.
Conclusions:
- Long-term improvements in physical functioning after THA for OA are sustained.
- More severe preoperative radiographic features are associated with better THA outcomes.
- Obesity did not appear to negatively affect THA outcomes, though further research on severe obesity is warranted.
