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Indian J Orthop. 2013 May;47(3):313-6. doi: 10.4103/0019-5413.111514.

Localized nodular synovitis of the infrapatellar fat pad.

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Department of Orthopedic Surgery, Korea University Anam Hospital, Korea University College of Medicine, Seoul, Korea.


We report a case of localized nodular synovitis of the infrapatellar fat pad impinging on the patellofemoral joint causing limitation of extension. Arthroscopy involved use of a superolateral portal because location of lesion hindered access via a conventional anterior portal. The infrapatellar mass impinged in the patellofemoral joint upon knee extension and retracted upon flexion. Superior-superior triangulation allowed for complete excision of the mass.


Arthroscopy; infrapatellar fat pad; localized nodular synovitis

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