Lack of Muscle Sensation (Hip)

Question:

I have a client who seems to have no muscle sensation in his hip complex area. Stretches and foam rolling give only a sensation in his groin. He has difficulty in some movement, such as snowplowing when skiing (which he finds impossible to do) or jumping hurdles. The client is in his 40s and says he has been like this since a child. We are doing a program of exercises and stretches but with little progress. Can you suggest anything?

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