For mobilization orthotic with an outrigger, the line of pull should be at what angle to the long axis?

For mobilization orthotic with an outrigger, the line of pull should be at what angle to the long axis?

• A. 0 degree
• B. 45 degree
• C. 135 degree
• D. 90 degree

Answer: (D)

The line of pull should be perpendicular to the long axis to maximize torque at the joint. An outrigger is a lever that applies force to produce joint motion, and pulling at 90 degrees creates a pure rotational effect about the joint, giving controlled, efficient mobilization in the desired plane. If the pull is parallel to the axis, the force mainly translates along the limb with little rotational mobilization and can add unwanted distraction or compression. Angles like 45 or 135 degrees mix rotation and translation and are less optimal for targeted mobilization. So aligning the line of pull at ninety degrees provides the strongest, most controlled mobilization effect.

The line of pull should be perpendicular to the long axis to maximize torque at the joint. An outrigger is a lever that applies force to produce joint motion, and pulling at 90 degrees creates a pure rotational effect about the joint, giving controlled, efficient mobilization in the desired plane. If the pull is parallel to the axis, the force mainly translates along the limb with little rotational mobilization and can add unwanted distraction or compression. Angles like 45 or 135 degrees mix rotation and translation and are less optimal for targeted mobilization. So aligning the line of pull at ninety degrees provides the strongest, most controlled mobilization effect.