The trochlea is the groove of the femur, where the patella runs.

trochlear groove
Looking down at the joint from the patient's perspective.
Synonyms: 
Femoral groove
Trochlear groove
groove of femur
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Explaining how the kneecap glides within the underlying groove of the femur bone.

Knee bones from above

Simple illustrations to give a birds' eye view of the knee bones.

Knee bones from side

Bony anatomy of the knee, in simple terminology.

Patellar instability and dislocation

Discussing how the anatomy can affect the tendency to dislocate the patella.

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CLINICAL PUBLICATIONS

Association Between Measures of Patella Height, Morphologic Features of the Trochlea, and Patellofemoral Joint Alignment: The MOST Study. Stefanik JJ, Zumwalt AC, Segal NA, Lynch JA and Powers CM. Clin Orthop Relat Res. 2013 Aug; 471(8): 2641–2648.


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