Quadriceps fat pad impingement syndrome

Quadriceps (anterior suprapatellar) fat pad impingement syndrome is a rare cause of anterior knee pain although quadriceps fat pad edema may often, and possibly more commonly, be incidental .

Radiographics features

MRI

The quadriceps fat pad is enlarged with mass effect on the adjacent suprapatellar recess and quadriceps tendon .

Signal characteristics
  • T1: low signal
  • T2: high signal
  • T1C+: enhancement
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