Patellar tendinosis

Case contributed by Dr Andrew Dixon

Presentation

Knee pain for 1 month following minor trauma.

Patient Data

Age: 45
Gender: Male
Modality: X-ray

Thickened patellar tendon consistent with tendonosis.  Normal patellar tendon thickness is ~0.5cm (or ~70% the thickness of the accompanying quadriceps tendon).  

Modality: MRI

Patellar tendonosis with pre-patellar bursitis (T1)

Normal patellar tendon thickness is ~0.5cm (or ~70% the thickness of the accompanying quadriceps tendon).

Case Discussion

Knee radiograph and MRI images demonstrate patellar tendinosis with associated pre-patellar bursitis.

Normal patellar tendon thickness is ~0.5cm (or ~70% the thickness of the accompanying quadriceps tendon).  In this case there is diffuse patellar tendinosis (sparing the portion that passes anterior to the patella to fuse with the quadriceps tendon). Focal patellar tendinosis of the proximal deep insertional fibers is termed Sinding-Larson-Johansson disease in children (often associated with cerebral palsy) and jumper's knee in adults.  

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Case Information

rID: 9374
Case created: 10th Apr 2010
Last edited: 10th Mar 2016
Tag: knee
Inclusion in quiz mode: Included

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