A Novel Association between Femoroacetabular Impingement and Anterior Knee Pain

<div>Anterior left knee pain and symptomatic left Cam femoroacetabular impingement. (a) 90° of hip flexion with maximum internal rotation. (b) The same image at 90° of hip flexion with maximum external rotation. (1) Labrum, (2) synovial tissue, (3) femoral neck, and (4) femoral head.</div>

Pain Research and Treatment

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Figure 1

Figure 1: A Novel Association between Femoroacetabular Impingement and Anterior Knee Pain 