Report a mistake
Found a wrong answer, an unclear option or an outdated reference? Tell us and a reviewer checks the question against its source.
The question
With the knee extended, a patient lying supine can raise the straight leg to only 50 degrees of hip flexion. With the knee flexed the hip flexes to 100 degrees. What best explains the difference?
Sign in to send a report, so we can follow up if we need to ask you something.