Clarke’s Patellofemoral Grind Test

Testing for:
Patellofemoral Syndrome

Procedure:

• Patient is supine with their knees extended
• Therapist compresses the patella posteriorly onto the femoral condyles and then, moderately move the patella distally
• Therapist instructs patient to contract the quadriceps muscles (to pull patella proximally)

Positive Sign:
Pain, crepitus, apprehension of the patient as the irritated surfaces of the patella rub over the femur