PFS Hi Dr. I am in my forty's, been active all my life, b-ball, volleyball, hockey mostly as a goal tender (lots of knee-bends). I never ever had a knee problem with either knee until this year. My left knee, is clicking now, and I have pain generally when I walk down stairs or a hill, or when I'm in a deep knee bend. I've been told and being treated for PFS. The pain is bearible, and I still manage to walk 3 km everyday with it. My question is, am I further damaging this knee by walking on it daily? What procedure should I consider to determine the true source of my current condition? The pain is located in two locations. The interior side of the left knee(inside thigh area) and beneath the knee cap. I have a clicking sound towards the anterior side of the left knee. Appreciate your advice, Sincerely, Mark Horth From: soshorth@puc.net Story Categories UPDATED STORIES CATEGORIES   Apr. 15 441 ACL injury/reconstruction Mar. 23 19 Anterior knee pain syndrome Jan. 18 78 Arthroscopy Jul. 17 24 Autologous Chondrocyte ... Apr. 26 8 Bursitis May. 23 84 Cartilage problems Oct. 20 99 Chondromalacia Patellae Mar. 15 30 Chronic Swelling Dec. 10 22 Depression due to inactivity Apr. 12 63 Dislocation Feb. 11 20 Iliotibial Band Syndrome Sep. 03 162 Knee Injury Jan. 04 270 Knee pain Oct. 25 203 Knee Replacement ... Mar. 27 142 Knee surgery Jan. 05 28 Ligament damage Aug. 27 159 Meniscus injury/repair Apr. 03 29 Microfracture Mar. 09 65 Osgood Schlatter Disease Mar. 31 23 Osteoarthritis Nov. 28 59 Osteochondritis Dessicans Apr. 08 107 Other May. 11 106 Patella-Femoral Syndrome Jan. 12 33 Rehabilitation/Treatment May. 24 11 Rheumatoid Arthritis