Jumper knee (patellar tendinitis)

Case contributed by Dr Mohammad A. ElBeialy


Anterior knee pain.

Patient Data

Age: 20 years
Gender: Male


  • 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 bones. 
  • 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 syndrome) but usually occurring in adolescents.  

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Case information

rID: 38581
Published: 8th Sep 2015
Last edited: 14th Aug 2019
Inclusion in quiz mode: Included

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