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The Bateman bipolar prosthesis: a prospective study in primary osteoarthritis
S M Kelly1, J Hill, W A Hadden
1Orthopaedic Department, Perth Royal Infirmary, UK.
Journal of the Royal College of Surgeons of Edinburgh
|February 1, 1995
Summary
The Bateman bipolar prosthesis showed unpredictable outcomes for primary osteoarthritis patients. Researchers do not recommend its use due to significant thigh pain and poor functional scores.
Area of Science:
- Orthopedic surgery
- Biomedical engineering
- Clinical outcomes research
Background:
- Primary osteoarthritis necessitates effective hip arthroplasty solutions.
- The Bateman bipolar prosthesis was evaluated for its efficacy in treating hip osteoarthritis.
Purpose of the Study:
- To prospectively assess the clinical and radiological outcomes of the Bateman bipolar prosthesis in primary osteoarthritis.
- To identify potential complications and functional limitations associated with this implant.
Main Methods:
- Prospective study over 5 years in Perth, involving 76 prostheses in 72 patients.
- Cementless straight Moore stem and bipolar acetabular component used for primary osteoarthritis.
- Assessment included 6-monthly intervals, Harris hip scores, and radiological evaluation of component movement, migration, and proximal osteoporosis.
Main Results:
- Mean Harris hip score at 3 years was 85 (range 55-99), with 30% scoring below 70.
- 27% of prostheses showed restricted inner bearing movement at 3 years.
- 43% exhibited moderate to severe stress shielding around the proximal femur; thigh pain was a significant issue.
Conclusions:
- The Bateman bipolar prosthesis demonstrated unpredictable clinical results in primary osteoarthritis.
- High rates of radiologic complications and persistent thigh pain limit its utility.
- The study does not advocate for the use of the Bateman prosthesis in primary osteoarthritis due to inconsistent outcomes.