I'm 41 Rv8 don't have pic but will post one latter for u.....and depends what muscle u concentrate on, it will help stabilize the knee joint......my doctor has a subject that has done this for over 4 years.......working the right muscle group has given me the added stability. And delay the reconstruction of all 4 ligaments in both my knees, he wil be publishing the results in the medical journal this year.