Related Experiment Videos
[The review of 4300 Charnley total hip replacements inserted between 1968 and 1979 (author's transl)]
Insights
Charnley total hip replacements show good long-term results with low wear rates. However, complications like venous issues, dislocations, and sepsis require careful management, especially in revision surgeries.
Area of Science:
- Orthopedic Surgery
- Biomaterials Science
Background:
- The Charnley total hip replacement has been a widely used implant since 1968.
- Assessing long-term outcomes requires analyzing complications and functional results across a large patient cohort.
Purpose of the Study:
- To analyze the operative and postoperative complications of Charnley total hip replacements.
- To evaluate the functional outcomes and long-term performance of the prosthesis.
Main Methods:
- Review of 4,300 Charnley total hip replacement cases performed since 1968.
- Analysis of complication rates including venous issues, dislocations, fractures, sepsis, and component wear.
- Assessment of functional results based on patient outcomes.
Main Results:
- 10% of cases experienced venous complications. Early dislocations occurred in 125 cases, with 38 late dislocations requiring anesthesia.
- Severe sepsis occurred in 1.5% of cases, necessitating prosthesis removal, with higher rates in previously operated hips (5% vs. 1%).
- 85% of functional results were rated excellent, with 2% failure. Prosthesis wear was rare and well-tolerated.
Conclusions:
- Charnley total hip replacement demonstrates consistent long-term results, with wear not being a significant hazard.
- Complication rates, particularly sepsis, are higher in revision hip surgery.
- Assessing outcomes is complex due to patient age, varied assessment methods, and comorbidities.
Abstract:
4 300 Charnley total hip replacements have been performed since 1968 using either a lateral or a posterior approach. The operative and post operative complications are analysed. 10 p. 100 of the cases had venous complications. There were 125 early dislocations which were easily reduced, and 38 dislocations occurring 6 to 8 years after the operation which were reduced under general anesthesia. There were 5 fractures of the stem of the femoral prosthesis. Instances of wear of the acetabular component were rare. 1.5 p. 100 of severe sepsis occurred leading to the need for the removal of the prosthesis in 23 cases. The percentage of septic complications was much higher in hip that had previously been operated on (5 p. 100) compared with when there had been no previous operation (1. p. 100). Functional results were rated excellent in 85 p 100, good and failure in 2 p. 100. In their conclusions, the authors state that the assessment of the results is difficult because of the age of the patients, the variability in methods of assessment and the presence of associated diseases. They emphasize that the results were consistent even after long periods of time and that wear in the prosthesis is not a hazard, any particles being produced by wear being well tolerated.