Localised pigmented villonodular synovitis of the knee

Localised pigmented villonodular synovitis(PVNS) of the knee is a rare, idiopathic condition presenting with symptoms that can be confused with various other intra-articular pathologies. The condition is usually monoarticular, the knee being most commonly affected. If totally excised, complete cure can be achieved and recurrence is very rarely reported. In this report, we present a patient with PVNS of the knee who underwent arthroscopic treatment. At short-term follow-up, he had complete recovery of symptoms with no apparent recurrence.  Key words: Knee, Pigmented villonodular synovitis,  Localised form