These are indications that you are doing more than your knee is ready for. You should not be in this much pain after a PT session.I've been on muscle relaxers for 2 months now because all the muscles in my left leg are so tight and won't relax. I'm at a loss. Therapy feels good when I'm there but after an hour or 2 I can barely stand.
I suggest cutting back on the PT, and just live your life as you are able. Your leg will relax, and strengthen, over time. 4 months is 1/3 towards complete healing, which takes an average of a year.
In the general run of things, this recovery doesn't need to be fought for, worked hard for or worried about. It will happen. Normal activity is the key to success.
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