LOCKING UNLOCKING OF KNEE JOINT

How to write in exam about the sequence of movements for locking of knee joint.
Describe the locking and unlocking of knee joint.
What is evolute of profile.
why knee joint is a modified hinge joint.
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Which type of rotation takes place in upper and lower compartments of knee and when......It should be more clear that there are two types of rotation:- 1. Adjunct rotation which occurs in lower compartment while 2. the conjunct rotation occurs in upper compartment. Adjunct rotation occurs in semiflex knee and caused by hamstrings while conjunct rotation occurs in upper compartment automatically as a part of locking unlocking of knee joint due to geometric reasons of articular surfaces...