Used to detect dislocation of patella. Supine patient flexes knee to be tested to 30¡ while examiner slowly pushes patella laterally with thumbs. If patella is dislocated, patient reflexively tightens quadriceps muscle.
InsideSurgery Medical Information Blog
Details of surgical procedures, pathophysiology, signs and symptoms, and treatment of medical diseases,medical and surgical eponyms, and surgeons and surgery in the news