Condylar width is a measure of knee size, and knee rotational position is a geometric variable that is not known to relate to contact stress; however, as the menisci are known to move with knee rotation, it was hypothesised that there is a correlation between rotational position and meniscus shape.
These results imply that axial knee rotation follows a repeatable pattern within and among subjects.
Some may not care whether the Graham knee rotation known as a knee vibration is complete or that the transitions, especially as the dancers rise from the floor, need to be smoothed out.
The magnitude of this error from soft tissue deformation as well as the rotatory movements in the hip, foot and ankle joints must be considered when using external devices to measure knee rotation in clinical studies.
Knee rotation was calculated based on the joint coordinate system definition (Grood and Suntay, 1983), which described knee rotation as occurring around the shank's longitudinal axis.
These differences might be attributed to different definitions of neutral position (i.e., 0° knee rotation).
On fluoroscopy, the ossicle moves with the tibia during knee rotation [7].
However, most of these studies only report kinematics, either knee range of motion (ROM) or peak knee rotation.
From the marker positions and GRF data, the knee rotation and moment were calculated for each participant using inverse dynamics for idealized rigid segments.
Human like characteristics such as a deformable foot plays an important role in walking and knee rotation at a bending position contribute to operating the pedals of a car.
The key to proper postoperative knee function is to restore the physiologic roll-glide mechanism of the femorotibial joint, and thus avoid both increased anterior displacement and pathologic patterns of knee rotation.
