✍ Scribed by R. Seyss
No coin nor oath required. For personal study only.
The femur-condyles may be conceived as can be deduced from the lateral exposures, in the sense of an unrolling wheel on a roiling cylinder. With this form the cartilage bearings and also the intermediary menisci are subjected to the least variations in form, considering that the involutes run parallel to each other. As one does not always succeed to photograph the condyles in such ideal position parallel to the plates, the unrolling cylinder must be considered as somewhat angled in front, as with the usual lateral views or exposures the contours come to be distorted. Towards the centre of this unrolling cylinder extends the axis of the end of the proximal tibia. On this axis extend the lateral ligaments. The crossed ligaments run as tangents on this unrolling cylinder. An observation allows also for a simple genesis of the osteochondritis dissecans in the region of the medial femur-condyle, as well as of the articular surface of the patella, considering that the locations of the genesis of these cartilage injuries are subjected to special tensions. This analysis further shows the importance of the reflexion of the proximal tibia-axis. The intermediary menisci have the function to reduce the pressure of the articular bearings, so that the circular cylinder (femurcondyles) move against a hollow cylinder (hollowed menisci). In addition, the lateral meniscus must join in the rotary movement of the medial femur-condyle, and needs therefore to be especially mobile. In order to register this sagittal curvature of the medial, as well as the lateral meniscus, as special direction for the exposure is indicated.
📜 SIMILAR VOLUMES
## On the Cause of the Anterolateral Instability of the Knee Joint A Study on 20 Cadaver Knee Joints with Special Regard to the Tractus Iliotibialis Summary Experiments on 20 cadaver knee joints are reported on A short medial incision was made to transect the anterior cruciate ligament Through a l