The trochlear nerve, also known as cranial nerve 4 (CN IV), controls the superior oblique muscle in your eye. This muscle allows you to move your eyeball down and shift your gaze from side to side.

The trochlear groove is comparable to a bobsled track, and depth insufficiency of the trochlea can result in displacement of the patella from its intended curvilinear course. This became ...

According to study results, the MRI oblique trochlear view accurately evaluates trochlear morphology and better characterizes trochlear dysplasia in patients with patellofemoral instability ...