Screw-Home Mechanism of the Knee EXPLAINED

The video explains the screw home mechanism of the knee, focusing on the differences between open and closed chain knee extensions. In open chain movements, the tibia rotates externally relative to the femur near full extension, influenced by the shape of the medial femoral condyle, tension in the ACL, and the pull of the quadriceps. In closed chain movements, such as squats, the femur rotates internally relative to the tibia. Understanding these mechanisms is crucial for proper knee mobilization and exercise execution.

How does the position of the tibial tuberosity relate to tibial rotation?

What happens to the tibia during near terminal extension in open chain exercises?

In closed chain knee extension, which bone is considered the mobile bone and why?