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Fig. 1 | BMC Musculoskeletal Disorders

Fig. 1

From: Open synovectomy treatment for intra- and extraarticular localized pigmented villonodular synovitis of the knee: a case report

Fig. 1

Preoperative MRI scans. a LPVNS manifested as a circumscribed and lobulated infrapatellar mass with an extra-articular extension through patellar tendon on sagittal T1-weighted images. b The pathognomonic appearance of PVNS, a “blooming artifact” caused by hemosiderin deposition (red pentastar), was observed on sagittal T2-weighted images. c Axial images revealed that extra-articular mass developed on both sides of the lateral patellar retinaculum, through a focal defect (asterisk), with a superficial component (arrowhead) and a deep component (arrowhead). ITT: Indicates iliotibial tract; PT: patellar tendon

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BMC Musculoskeletal Disorders

ISSN: 1471-2474

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