
Originally Posted by
Physioindeed
In a recent course I have done we discussed that if the patient is in prone lying and lifting his leg in extention, the chain of activation should be glutes first, then hamstrings. You can test that and just visually see, if he activates his gultes first.
Also if the gultes are not strong enough to start of with, the hamstrings overload.
Same for adductor magnus. So test these and also strengthen them.
so it might be a muscle control or/and muscle imbalance problem.
good luck! (ps. brookner and kahn: clinical sports medecine has a nice little section about it)