I am 45 and in good shape, quite active but have had problems with my knees especially the right knee for 2 years and I have perhaps injured them through yoga -but also I was hit 1 year ago by a motorcycle which really hurt my right knee and hip as the impact was in my right thigh (which now has an indentation). I have been trying to use band supports when exercising but 3 months ago I was in the Pacific ocean and was hit by a strong wave which smashed my right knee out of joint and I had to push it back in place-it was terribly painful and remains tender and has snapped out several times since, when turning slightly. Then last week in getting out of a pool and trying to avoid using my right knee, I put weight on my left and felt a sharp tearing on my left kneecap against the stone! There is no bruise or mark but 1 week later, touching that spot on the kneecap is still excruciating and burning like a tear and something is a little lump and loose on the kneecap. Is there a way to fix these problems? Will my knees ever be good enough again to resume my activities? What can I do?