Right knee pain radiates down to ankle sometimes up to hip. ortho sent me for mri last week waitng for results he thinks possilbe cartilidge tear. ?

MRI next step : This could be caused by a problem within the knee so an MRI is a good idea if x-rays were normal. Radiating pain in the lower extremity can also be nerve related so additional testing may be needed if MRI doesn't show the cause.

Possibly: Meniscus tears in the knee can sometimes cause pain to radiate proximal or distal to knee joint. They can also cause popping, locking, and/or pain with kneeling and squatting. An MRI is a very good study to evaluate for this problem if a history and physical exam are not conclusive.