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Acetabular roof reinforcement rings
P Korovessis1, P Spastris, G Sdougos
1Orthopaedic Department, General Hospital Agios Andreas, Patras, Greece.
Clinical Orthopaedics and Related Research
|October 1, 1992
Summary
The Mueller roof reinforcement ring (RRR) shows significant clinical improvement in total hip arthroplasty patients. This device proved effective for both primary and revision surgeries, with no reported loosening or material failure.
Area of Science:
- Orthopedic Surgery
- Biomaterials Engineering
Background:
- Acetabular deficiencies pose challenges in total hip arthroplasty.
- The Mueller roof reinforcement ring (RRR) is a device designed to address these deficiencies.
Purpose of the Study:
- To evaluate the clinical and radiologic outcomes of total hip arthroplasties using the Mueller RRR.
- To assess the efficacy of the RRR in both primary and revision arthroplasties.
Main Methods:
- A series of 30 total hip arthroplasties were performed in 29 patients using the Mueller RRR.
- Clinical and radiologic results were assessed using the Mayo Clinic scoring system over a mean follow-up of 30 months.
Main Results:
- Preoperative scores significantly improved, with an average correction of 68.41% at follow-up.
- No loosening of the RRR or polyethylene sockets was observed.
- No statistically significant difference in outcomes between primary and revision procedures.
Conclusions:
- The Mueller RRR is a helpful adjunct for primary and revision total hip arthroplasties, particularly for acetabular deficiencies within five years post-operation.
- The device demonstrated good clinical outcomes and durability without material failure.