What is the patient position for performing MMT of ankle dorsiflexion in gravity-minimized conditions?

What is the patient position for performing MMT of ankle dorsiflexion in gravity-minimized conditions?

• A. Side lying with the tested limb on top resting on a powder board or smooth surface.
• B. Prone with the foot off the edge of a table.
• C. Seated with the knee extended.
• D. Supine with the leg straight.

Answer: (A)

To isolate the ankle dorsiflexors without the influence of gravity, place the patient so the limb’s weight doesn’t drive the movement and the ankle can move freely in dorsiflexion against minimal resistance. Side-lying with the tested leg on top, resting on a smooth surface (such as a powder board), achieves this by supporting most of the leg’s weight and allowing the foot to move in a dorsiflexion arc with minimal friction. This setup lets you stabilize the proximal segment and apply a controlled resistance to the dorsum of the foot while gravity isn’t biasing the motion toward plantarflexion or assisting dorsiflexion. Other positions tend to place the limb in a gravity-influenced plane or make stabilization and isolation more difficult, which is why this side-lying, top-leg on a smooth surface is preferred for gravity-minimized testing of ankle dorsiflexion.

To isolate the ankle dorsiflexors without the influence of gravity, place the patient so the limb’s weight doesn’t drive the movement and the ankle can move freely in dorsiflexion against minimal resistance. Side-lying with the tested leg on top, resting on a smooth surface (such as a powder board), achieves this by supporting most of the leg’s weight and allowing the foot to move in a dorsiflexion arc with minimal friction. This setup lets you stabilize the proximal segment and apply a controlled resistance to the dorsum of the foot while gravity isn’t biasing the motion toward plantarflexion or assisting dorsiflexion.

Other positions tend to place the limb in a gravity-influenced plane or make stabilization and isolation more difficult, which is why this side-lying, top-leg on a smooth surface is preferred for gravity-minimized testing of ankle dorsiflexion.