Related Experiment Videos
Survival of cemented total hip replacements
M A Ritter1, E M Keating, P M Faris
1Louisiana State University, Shreveport.
Seminars in Arthroplasty
|June 8, 1990
Summary
This study analyzed cemented total hip replacements, finding Charnley prostheses had the highest 15-year survival rate. Current cement technology requires longer observation for definitive comparison.
Area of Science:
- Orthopaedic surgery
- Biomaterials science
Background:
- Cemented total hip replacements (THR) with all-polyethylene acetabular components are common.
- Establishing benchmarks for non-cemented alternatives is crucial.
Purpose of the Study:
- To evaluate the long-term survival rates of four different cemented THR designs.
- To establish a performance benchmark for non-cemented THR.
Main Methods:
- Kaplan-Meier survival analysis was performed on 1069 cemented THRs.
- Data included Charnley, Mueller, Trapezoidal 28, and Miami Orthopaedic Surgical Clinics prostheses.
- Follow-up duration varied, with some observed for 8 years and others for over 15 years.
Main Results:
- At 15 years, Charnley prostheses showed 80% survival, while Mueller and Trapezoidal 28 had 61% and 63% survival, respectively.
- The Miami Orthopaedic Surgical Clinics prosthesis, using current cement technology, has an 8-year follow-up.
- No significant differences were observed between the four prostheses at the 8-year mark.
Conclusions:
- The Charnley cemented THR serves as a benchmark for long-term performance.
- Current cement technology in THR requires extended observation periods for efficacy assessment.
- Further research is needed to compare the long-term utility of current cemented THR designs.