KNEE JOINT-LOCKING MECHANISM
From NeuroRehab.wiki
SUMMARY
Hyperextension of the knee is terminated by the locking mechanism of the knee - medial (anti-clockwise) rotation of the femur on the tibial plateau. Lateral (clockwise) rotation by the popliteus unlocks the knee.Medial rotation tightens 4 ligaments:
1. ACL - the first to become taught.
2. MCL - prevents further rotation.
3. LCL - prevents further rotation.
4. Oblique popliteal ligament - prevents further rotation.
Reference(s)
R.M.H McMinn (1998). Last’s anatomy: regional and applied. Edinburgh: Churchill Livingstone.
Gray, H., Carter, H.V. and Davidson, G. (2017). Gray’s anatomy. London: Arcturus.
