Difference between revisions of "KNEE JOINT-LOCKING MECHANISM"
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===== [[Summary Article|'''SUMMARY''']] ===== | ===== [[Summary Article|'''SUMMARY''']] ===== | ||
Hyperextension of the knee is terminated by the locking mechanism of the knee - | Hyperextension of the knee is terminated by the locking mechanism of the knee - <i>medial (anti-clockwise) rotation </i>of the femur on the tibial plateau. <i>Lateral (clockwise) rotation </i>by the popliteus unlocks the knee.Medial rotation tightens 4 ligaments: | ||
<br/>1. ACL - the first to become taught. | <br/>1. ACL - the first to become taught. | ||
<br/>2. MCL - prevents further rotation. | <br/>2. MCL - prevents further rotation. | ||
<br/>3. | <br/>3. LCL - prevents further rotation. | ||
<br/>4. Oblique popliteal | <br/>4. Oblique popliteal ligament - prevents further rotation. | ||
Latest revision as of 11:29, 1 January 2023
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.
