Patella alta

Case contributed by Dr Abdallah Khateeb

Presentation

Knee trauma.

Patient Data

Age: 18 years
Gender: Male
X-ray

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MRI

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Case Discussion

As seen on the lateral X-ray, the patella is high-riding or patella alta. The Insall-Salvati ratio is the way to determine borders of normal. 

As measured at the X-ray, the ratio of patellar tendon length to the length of patella is 1.3, with 1.2 being the upper border of normally positioned patella.

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Case information

rID: 44943
Case created: 9th May 2016
Last edited: 10th May 2016
Inclusion in quiz mode: Included

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