AI Article Synopsis
- The study investigates how static pressure affects endoprosthetic hip shafts implanted in cadaveric femurs using bone cement, focusing on the maximum breakload of the femora or the prosthesis.
- Experiments conducted on 27 femora tested four types of endoprostheses, comprising three metallic shafts and one ceramic shaft.
- Results indicated that metallic shafts had a better load distribution compared to ceramic shafts, leading to higher breakload when the angle between the prosthesis collar and the shaft exceeded 140 degrees.
Article Abstract
The present paper deals with biomechanical investigations applying static pressures to endoprosthetic hip shafts implanted into cadaveric femora with bone cement. The purpose of the investigations was to observe the maximal breakload of the femora or endoprosthesis. We did experiments with 27 femora and implanted 4 different endoprostheses (3 metallic shafts and 1 ceramic shaft). The investigations showed a significant difference between metallic and ceramic shafts in maximal breakload. The metallic shafts showed a favourable load distribution from the prostheses shafts to the femora. That means a higher breakload when the angle between prosthesis-collar and shaft is more than 140 degrees.
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