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Long-term results with the uncemented thrust plate prosthesis (TPP)
A H Huggler1, H A Jacob, H Bereiter
1Orthopedic Department, Kantonspital, Chur, Switzerland.
Acta Orthopaedica Belgica
|January 1, 1993
Summary
The novel Thrust Plate Prosthesis (TPP) offers a viable alternative for hip replacement, showing excellent long-term clinical and radiological outcomes. Its unique design preserves bone stock, making it ideal for younger patients needing joint replacement.
Area of Science:
- Orthopedic Surgery
- Biomedical Engineering
- Materials Science
Background:
- The study evaluates the long-term clinical results of the Thrust Plate Prosthesis (TPP), a novel concept in total joint replacement.
- The TPP utilizes direct load transfer to the medial cortical bone of the femoral neck, a principle unchanged since 1978.
Observation:
- Clinical and radiological follow-up was conducted on 162 patients implanted between 1980 and 1991.
- Histological examination of an 8-year-old implant revealed new bone formation in direct contact with the thrust plate, without intervening fibrous tissue.
Findings:
- The Thrust Plate Prosthesis demonstrated good long-term clinical and radiological results.
- Histological findings validated the biomechanical principle of the TPP, showing excellent osseointegration.
- The TPP is confirmed as a valid alternative to conventional hip prostheses.
Implications:
- The TPP's biomechanical principle is validated by clinical and histological evidence.
- The prosthesis requires minimal bone stock removal, offering advantages for younger patients.
- The TPP presents a significant alternative to conventional intramedullary anchored stem prostheses.