Osgood-Schlatter Disease - MSK Radiology
Imaging Findings:
• Infrapatellar fat-pad edema with loss of the patellar tendon sharp posterior margin. There is also fragmentation and mild bone marrow edema of the tibial tuberosity.
• T2-hyperintense fluid-signal within the infrapatellar bursa consistent with bursitis.
• Thickening and intrinsic intermediate signal of the distal patella tendon.
Case description:
• Active adolescents typically 10-15 year-olds.
• Tibial tuberosity pain and swelling exacerbated with activity.
• Isolated apophysis "fragmentation" DOES NOT OSD in all cases; possible secondary ossification centers. Eval clinical presentation & look for secondary findings!
• MRI is more sensitive & specific:
- Hoffa fat pad and subcutaneous soft-tissue swelling
- Patellar tendon thickening/edema-like signal
- Infrapatellar bursitis
- Marrow edema of tibial tuberosity
Differential diagnosis:
• Sinding-Larsen-Johansson disease (similar condition but at the inferior pole patella)
• Patellar tendon tear (similar symptoms, absence of marrow edema and bony fragmentation)
Dr. Donald von Borstel @DrvonBorstel
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