Range of Motion – Flexion

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Knee flexion is assessed by maximally flexing the knee as far posteriorly as possible. In the face of an acute injury or for patients who have pain from swelling, full flexion may not be assessable because of too much pain. Limitations of knee flexion should always be compared to the opposite knee. In general, most limitation of knee flexion is due to an acute injury, knee swelling, meniscus tear, or arthritis.