Ask the patient to bend their knee as far as they can. If the patient is able, he/she should also flex at the hip to get complete knee flexion. If the patient cannot flex at the hip this measurement can also be done in the prone position.
· Patient should be supine with both legs flat on the table.
· The fulcrum is aligned with the lateral epicondyle of the femur.
· The stationary arm is in line with the greater trochanter and midline of the femur, the moving arm with the lateral malleolus and midline of the fibula.
· Goniometer positioning is same as above.
Normal ROM is 135-150 degrees, the patient in the picture is in 146 degrees of knee flexion.
The patient should simply be lying prone with a towel placed underneath the thigh or foot off the end of the table, to gain full knee extension.
Starting and Ending Position:
· The patient should be lying prone with both legs flat on the table.
· The goniometer positioning for knee extension is the same as it is for knee flexion.
Normal ROM for knee extension is between 0 and –10 degrees. The patient has –3 degrees of knee extension.
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