Supine Active Knee Extension (90/90)

① Hip at 90°, Knee Bent 90°

· Lie on your back, hip held at 90°
· Hands clasped behind the raised thigh
· Other knee stays bent, foot flat

② Straighten the Knee Toward the Ceiling

· Straighten the knee slowly, toes toward you
· The thigh doesn't move — only the knee
· Stop short of a sharp stretch or pain
· Bend back down with control

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