A 20 year-old female complains of pain under her knee cap wh…
A 20 year-old female complains of pain under her knee cap when she climbs stairs, sits in class, or squats to tie her shoes. She does not recall any specific mechanism of injury and her pain has progressively worsened over the past 6 weeks. Based on this information, a test that can assist your differential diagnosis for fit with practice patterns is: