What indicates a positive Clarke's Sign test?

A positive Clarke's Sign test indicates an inability to contract the quadriceps muscle without experiencing pain, suggesting the presence of patellofemoral dysfunction such as patellar tracking issues or potential chondromalacia. During this test, the patient is asked to contract the quadriceps muscle while the examiner applies pressure to the superior pole of the patella. If the patient cannot achieve this contraction without discomfort, it reflects a potential underlying problem associated with the patellofemoral joint.

This test is particularly valuable in assessing issues related to knee pain that are commonly observed in various populations, especially athletes or individuals with anterior knee pain. Understanding this test's significance aids in making accurate diagnoses and developing appropriate treatment strategies to manage knee conditions effectively.