Win an All-Access Pass!
Become a new yearly Curie (Radium) or Roentgen (Gold) Radiopaedia Supporter during December and be in the running to win one of four 12-month All-Access Passes. Find out more.

Chondromalacia patellae

Case contributed by Dr Mostafa El-Feky


Anterior right knee pain

Patient Data

Age: 20 years
Gender: Male

MRI right knee

A focal defect is noted at the patellar articular cartilage with minimal subchondral edematous bone changes (grade III chondromalacia patellae according to modified Outerbridge grading system).

Mild knee joint effusion is also noted.  

Case Discussion

Chondromalacia patella is focal degeneration of the articular patellar cartilage. It may be spontaneous or secondary to primary incidents like trauma. It is more common in females in the young adult age group. The usual presentation is anterior knee pain. MRI is the modality of choice for diagnosis and grading. According to modified Outerbridge grading system, these features represent grade III chondromalacia patella.

PlayAdd to Share

Case information

rID: 52322
Published: 7th Apr 2017
Last edited: 9th Oct 2020
Inclusion in quiz mode: Included
Institution: Dar El Ashaa Center

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.