hi
Careful history of onset and reason has to be evaluated,whether any trauma or sudden jerk during movement occurred or is there no history of precceeding trauma.Is effusion gradual ad swelling increasing?All this to differentiate tear of posterior horn or
synovitis due to insiduous onset of
arthritis aaaaaaaaa/rheumatoid?
you must meet an orthopedic doctor to evaluate these points co-relating history,clinical findings and
MRI.Additional information about collateral ligament if trauma occurred and to rule out
bursitis in and around knee.Treatment usually is knee support in brace,rest,aspiration cytology and therapeutic draining, and repair of horn,if necessary, by arthroscopic tecknique.
Pain medicines,anti-inflammatory meds and local infilteration with
steroid,if necessary, after complete evaluation.
thanks