Tenosynovial giant cell tumour of the posterior cruciate ligament and its arthroscopic treatment.

Tenosynovial giant cell tumours originate from synovial tissues of the joints, tendon sheaths, mucosal bursas or fibrous tissues adjacent to tendons. Tenosynovial giant cell tumours are rarely intra-articular. We report a giant cell tumour of the tendon sheath arising from the posterior cruciate ligament diagnosed by magnetic resonance imaging and resected arthroscopically in a 54-year-old woman.