Symptoms and Signs
Patients often describe pain as being “inside the knee cap.” The leg tends to flex even when relaxed.
To assess the knee, a clinician can perform the Patellar Apprehension Test by moving the patella back and forth while the patient flexes the knee at approximately 30 degrees.
The patient can do the patella tracking assessment by making a single leg squat and standing, or by lying on his or her back with knee extended from flexed position. A patella that slips medially on early flexion is called the J sign, and indicates imbalance between the VMO and lateral structures.
Read more about this topic: Patellar Dislocation
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