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Published on: October 29, 2021
Midterm results of "thrust plate" prosthesis.
Bernd Fink1, Stephanie Wessel, Georg Deuretzbacher
1Orthopaedic Department, University Hospital Hamburg-Eppendorf, Germany.
The Journal of Arthroplasty
|August 11, 2007
Summary
The thrust plate prosthesis (TPP) shows a 7.0% failure rate, with improved clinical scores but is not recommended over stemmed prostheses. It may be suitable for very young patients requiring future revisions.
Area of Science:
- Orthopedic surgery
- Biomaterials science
Background:
- Metaphyseal fixation is a key consideration in hip arthroplasty.
- The thrust plate prosthesis (TPP) utilizes a specific metaphyseal fixation principle.
- Midterm outcomes of TPP require thorough evaluation to determine its clinical utility.
Purpose of the Study:
- To analyze the midterm results of the thrust plate prosthesis (TPP) based on its metaphyseal fixation principle.
- To evaluate the survival rate and clinical efficacy of TPP implants.
Main Methods:
- Analysis of survival data for 214 TPP implants in 204 patients.
- Clinical assessment using Harris hip score and radiologic examinations for 157 implants with a minimum 5-year follow-up.
- Calculation of failure rates due to aseptic and septic loosening.
Main Results:
- A 7.0% failure rate was observed, comprising 9 aseptic and 6 septic loosening cases.
- The Harris hip score significantly improved from 36.9 preoperatively to 91.2 postoperatively.
- Eleven TPPs exhibited radiolucent lines, none of which indicated prosthetic loosening.
Conclusions:
- The thrust plate prosthesis is not a suitable alternative to traditional stemmed endoprostheses.
- TPP may be considered for a select group of very young patients anticipating multiple revision surgeries.
- Long-term outcomes and comparative effectiveness with stemmed prostheses warrant further investigation.