Details
| Original language | English |
|---|---|
| Pages (from-to) | 883-885, 887-892 |
| Journal | Journal of Biomechanics |
| Volume | 23 |
| Issue number | 9 |
| Publication status | Published - 1990 |
| Externally published | Yes |
Abstract
The clinical results of total knee joint arthroplasty with patellar replacement have shown that postoperative problems arise, especially under unfavourable biomechanical conditions. The findings concerning retropatellar contact forces have been obtained by means of different methods, partly through experimental investigations and partly through theoretical considerations. But so far patellar replacement criteria and the resulting changes of the retropatellar contact force were not taken into consideration in other studies. Our mathematical model is based on a mechanical one and the parameter study considers the influence of the height of the patellar surface replacement upon different biomechanical parameters at varying positions. The results suggest that the patellar replacement should therefore be kept as low as possible, thus reducing the retropatellar contact force to a minimum, especially in the extremely stressed flexion areas of up to about 90°.
ASJC Scopus subject areas
- Biochemistry, Genetics and Molecular Biology(all)
- Biophysics
- Medicine(all)
- Orthopedics and Sports Medicine
- Engineering(all)
- Biomedical Engineering
- Medicine(all)
- Rehabilitation
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
In: Journal of Biomechanics, Vol. 23, No. 9, 1990, p. 883-885, 887-892.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - A theoretical and numerical approach to optimal positioning of the patellar surface replacement in a total knee endoprosthesis
AU - Reithmeier, Eduard
AU - Plitz, Wolfgang
PY - 1990
Y1 - 1990
N2 - The clinical results of total knee joint arthroplasty with patellar replacement have shown that postoperative problems arise, especially under unfavourable biomechanical conditions. The findings concerning retropatellar contact forces have been obtained by means of different methods, partly through experimental investigations and partly through theoretical considerations. But so far patellar replacement criteria and the resulting changes of the retropatellar contact force were not taken into consideration in other studies. Our mathematical model is based on a mechanical one and the parameter study considers the influence of the height of the patellar surface replacement upon different biomechanical parameters at varying positions. The results suggest that the patellar replacement should therefore be kept as low as possible, thus reducing the retropatellar contact force to a minimum, especially in the extremely stressed flexion areas of up to about 90°.
AB - The clinical results of total knee joint arthroplasty with patellar replacement have shown that postoperative problems arise, especially under unfavourable biomechanical conditions. The findings concerning retropatellar contact forces have been obtained by means of different methods, partly through experimental investigations and partly through theoretical considerations. But so far patellar replacement criteria and the resulting changes of the retropatellar contact force were not taken into consideration in other studies. Our mathematical model is based on a mechanical one and the parameter study considers the influence of the height of the patellar surface replacement upon different biomechanical parameters at varying positions. The results suggest that the patellar replacement should therefore be kept as low as possible, thus reducing the retropatellar contact force to a minimum, especially in the extremely stressed flexion areas of up to about 90°.
UR - http://www.scopus.com/inward/record.url?scp=0025182937&partnerID=8YFLogxK
U2 - 10.1016/0021-9290(90)90353-5
DO - 10.1016/0021-9290(90)90353-5
M3 - Article
C2 - 2211733
AN - SCOPUS:0025182937
VL - 23
SP - 883-885, 887-892
JO - Journal of Biomechanics
JF - Journal of Biomechanics
SN - 0021-9290
IS - 9
ER -