What is required of the patient during the Ely's Test?

During Ely's Test, the patient is required to lie in a prone position while the therapist flexes the knee. This test is primarily utilized to assess the flexibility and length of the rectus femoris muscle, which is one of the quadriceps muscles. When the therapist flexes the knee in this position, the hip remains extended, allowing for clear observation of any tightness or limitations in the rectus femoris muscle. If the patient is unable to achieve full knee flexion without lifting the hip off the table, it suggests a potential tightness in the muscle being tested.

The other answer choices do not accurately reflect the procedure of Ely's Test. The focus is specifically on the position of the patient and the manner in which the therapist assesses the muscle's flexibility, which is effectively done while the patient is lying prone.