Why does left knee hurt on backside of knee?

Not uncommon. Arthritis or cartilage tears can often present with pain mainly in the back of the knee. Have the knee evaluated.

Related Questions

Why does my right knee hurt more than the left knee when I do squads it usually cracks too.

Kneecap. you need to be examined for correct diagnosis but it sounds like your kneecap may be the cause.squatting loads the kneecap into the trochlea(groove in femur bone) and can irritate the kneecap cartilage(chondromalacia).Try stretching your hamstrings more before squats/lunges etc.Ibuprofen may be helpful.See an orthopedic surgeon if cont'd pain/popping after discussing w/parent(s). best of luck! Read more...
Loading R>L. I suspect that you are right legged (for example when you jump you take off on the right) so the tendency is to rely more on the dominant leg, hence more symptoms on the right. Tracking of the patella could also contribute, higher Q angle would load the lateral patella more. Read more...

Why does my right knee hurt more than the left knee when I do squads it usually cracks too.

Perhaps there is . Something wrong with it? Visit an orthopedist. . Read more...
Varies. There are multiple potential causes. You may have chondromalacia on the undersurface of your patella. This is an abnormality of the cartilage underneath your knee cap that can make it "crack" as you do squats. Pelican syndrome is another possibility. Consider being seen. Read more...
Patellar tendonitis. There are several possibilities that could explain what is going on. These include patellar tendonitis, juvenile rheumatoid arthritis, patellofemoral syndrome, patellar chondromalacia, quad spasm amongst others. It is best to see a Sport medicine or PMR specialist for a thorough evaluation and referral to PT for quad training.In the meantime ice and anti-inflammatories as necessary are recommended. Read more...
Tracking->cartilage. Squats place a lot of pressure on the kneecap cartilage. Technique of squatting is very important to minimize improper tracking of the kneecap. Cracking in both knees may be normal, but asymmetric cracking may indicate tracking problems or possibly cartilage damage. It is important that if your technique is sound, that you consider a formal evaluation of your knee to check your cartilage. Read more...

Was weeding & kneeling for 15 minutes. When I stood up, can't bear weight on left knee w/out severe front knee pain. Doesn't hurt when sitting. Tips?

Conservative care . Could be an injury to the soft tissue structures within the knee, possibly the meniscus. I would treat with conservative care: rest, ice, and perhaps Aleve (naproxen) or similar product. Hopefully it will resolve in short order. Read more...

Inner side of my left knee hurt. Is that a ligament or is pateller tendinitis?

Depends. There are several structures on the inside or medial aspect of the knee. The mcl ligament, medial meniscus and then you also have several tendons that attach just below the inside of the knee. The patella tendon is located at the knee cap so that shouldn't cause pain on the inside of the knee. Read more...