A member asked:

Pain behind the knee, if sitting down when straightening the knee it's very painful. what can this be . ?

2 doctors weighed in across 2 answers

Dr. Dan Fisher answered

Baker's Cyst: Oftentimes you can have an outpouching of the synovial membrane that lines the joint.

Dr King agreed

Answered 4/4/2013

5.2k views

A number of things: Could be a baker's cyst (as dr. Fisher said), torn cartilage, bursitis, arthritis, popliteal vein entrapment, etc. Impossible to say online without an examination. As a start, see your doctor.

Answered 5/13/2015

5.2k views

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A member asked:

Pain behind the knee, if sitting down when straightening the knee it's very painful. what can this be . ?

2 doctors weighed in across 2 answers

Dr. Dan Fisher answered

Dr King agreed

Dr. Ted King answered

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