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Dislocation following total hip replacement: the Avon Orthopaedic Centre experience.
Ashley W Blom1, Mark Rogers, Adrian H Taylor
1Avon Orthopaedic Centre, Southmead Hospital, Westbury-on-Trym, Bristol, UK. ashley.blom@nbt.nhs.uk
Annals of the Royal College of Surgeons of England
|October 3, 2008
Summary
Dislocation after total hip arthroplasty is a significant concern, with most events occurring early. This study highlights the incidence and recurrent nature of dislocations, informing patient risk assessment.
Area of Science:
- Orthopedic Surgery
- Arthroplasty Research
- Biomedical Engineering
Background:
- Total hip arthroplasty (THA) is a common procedure to address hip joint issues.
- Dislocation remains a challenging complication following THA, impacting patient outcomes.
- Understanding dislocation incidence and risk factors is crucial for improving THA procedures.
Purpose of the Study:
- To determine the incidence and outcomes of dislocation after total hip arthroplasty (THA).
- To analyze dislocation rates based on surgical approach.
- To assess the recurrence rates and timing of dislocations post-THA.
Main Methods:
- Retrospective audit of 1727 primary and 305 revision THAs performed between 1993-1996.
- Long-term follow-up (8-11 years) of 1567 primary and 284 revision THAs.
- Data collection via questionnaires, interviews, and case note review.
Main Results:
- Dislocation rates varied by approach: posterior (4.1%), Omega (0%), and modified Hardinge (3.4%).
- 58.5% of primary THA dislocations were recurrent, with a mean of 2.81 dislocations per patient.
- 8.1% of revision THAs dislocated, 70% recurrent, with a mean of 2.87 dislocations per patient. Most dislocations occurred within 2 months.
Conclusions:
- This study provides extensive data on THA dislocation incidence and outcomes in the UK.
- Findings can inform patients about the risks and potential outcomes of dislocation after THA.
- The high recurrence rate underscores the need for strategies to minimize early dislocations.
