Presentation
Anterior knee pain.
Patient Data
Age: 20 years
Gender: Male
From the case:
Jumper knee (patellar tendinitis)
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The proximal patellar tendon is seen thickened and ill-defined with increased T2, PDFS and STIR signal intensity. Associated increased signal intensity of the inferior patellar pole is noted with increased signal within the related Hoffa’s pad of fat.
Intact cruciate and collateral ligaments. No meniscal tear. No otherwise marrow signal abnormality of the examined bone. No significant joint effusion.
Case Discussion
The above-described findings are consistent with jumper’s knee (patellar tendinitis). The differential diagnosis is chronic osteotendinous traction injury of the proximal patellar tendon (Sinding-Larsen-Johansson disease) but usually occurs in adolescents.
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