Rotation is defined as which type of movement?

Rotation is defined as which type of movement?

• A. Decreasing angle at joint
• B. Increasing angle at joint
• C. Movement toward midline
• D. Movement around the axis

Answer: (D)

Rotation is turning a bone or body part around its long axis. This means you twist along a central line through the limb, rather than bending to change the joint angle or moving the limb toward or away from the midline. So, it’s about spinning around an axis, not about increasing or decreasing the angle at a joint or moving inward/outward from the body’s midline. Examples include turning the head left and right around the neck’s vertical axis, rotating the forearm so the palm faces up or down (pronation/supination) along the forearm’s length, or rotating the arm or leg at the shoulder or hip to point the hand or foot inward or outward. This focus on twisting around an axis distinguishes rotation from other movements like flexion/extension or adduction/abduction.

Rotation is turning a bone or body part around its long axis. This means you twist along a central line through the limb, rather than bending to change the joint angle or moving the limb toward or away from the midline. So, it’s about spinning around an axis, not about increasing or decreasing the angle at a joint or moving inward/outward from the body’s midline. Examples include turning the head left and right around the neck’s vertical axis, rotating the forearm so the palm faces up or down (pronation/supination) along the forearm’s length, or rotating the arm or leg at the shoulder or hip to point the hand or foot inward or outward. This focus on twisting around an axis distinguishes rotation from other movements like flexion/extension or adduction/abduction.