Muscle Atrophy in the Quadriceps

I have always had great muscular quadriceps.  I had a knee injury last year and now I have arthritis in my right knee.  I went through therapy a year ago, but my right quadricep does not look like my left quadricep.  My question is:  How do I build the muscles back up in my quadriceps (as a matter of fact, my entire thigh area)?

[txsilver]

That is an excellent question.  I think your best answer will come from a physical therapist.  The key is to find exercises that do not damage your arthritic knee while allowing you to build your quad.  Ask your doc for a referral to a PT.

[gcbfit]

Thank you for your comments.  I will get a referral for a PT.