Clarke's test

Clarke's Test

Anatomy of the knee joint

Clarke's test, also known as the patellar grind test, is a clinical examination procedure used to assess the presence of patellofemoral pain syndrome or other abnormalities in the knee joint. This test is particularly useful for identifying issues related to the patella and its articulation with the femur.

Procedure

The test is performed with the patient in a supine position, with the knee extended. The examiner places a hand just above the superior pole of the patella, applying gentle downward pressure. The patient is then asked to contract the quadriceps muscle while the examiner maintains pressure on the patella. The test is considered positive if the patient experiences pain or discomfort during the contraction.

Clinical Significance

Clarke's test is primarily used to diagnose patellofemoral pain syndrome, a common condition that affects the anterior part of the knee. It can also indicate other conditions such as chondromalacia patellae, where there is softening and damage to the cartilage on the underside of the patella.

Limitations

While Clarke's test can be useful, it is not definitive on its own. A positive result should be corroborated with other clinical findings and diagnostic imaging, such as MRI or X-ray, to confirm the presence of patellofemoral disorders.

Related pages

• Knee joint
• Patellofemoral pain syndrome
• Chondromalacia patellae
• Meniscus (anatomy)