719.25 (villonodular synovitis: pelvic region and thigh)
719.26 (villonodular synovitis: lower leg)
719.27 (villonodular synovitis: ankle and foot)
719.28 (villonodular synovitis: other specified sites)
719.29 (villonodular synovitis: multiple sites)
PVNS Etiology / Epidemiology / Natural History
Uncommon proliferative disorder of they synovium.
May be a neoplastic disorder with reactive synovitis.
Etiology unknown.
Generally 3rd - 4th decades. Can occur at any age.
PVNS Anatomy
PVNS Clinical Evaluation
PVNS Xray / Diagnositc Tests
MRI: T1 images show predominantly low signal intensiti. T2 images show low to intermediate signal. Intra-articular nodular masses; modest vascularity on gadoliunium images; "blooming" on gradient echo images (ferrous-laden tissue)
Diagnosis is confirmed by biopsy.
PVNS Classification / Treatment
Localized:
Diffuse:
Treatment: total synovectomy (open or arthroscopic) (DePonti A, Arthroscopy 2003;19:602).
Recurrence is common.
PVNS Associated Injuries / Differential Diagnosis
Hoffa's disease
Post traumatic inflammation
Patellar fat pad fibrosis
Chondroma
PVNS of the Knee Arthroscopic synovectomy Complications
