The hip can move in

• A. All planes of motion
• B. Only sagittal plane
• C. No rotation
• D. Only frontal plane

Answer: (A)

The hip joint is a ball-and-socket joint, which means it has three degrees of freedom and can move through movements in multiple planes. Flexion and extension occur in the sagittal plane, bringing the thigh forward and backward. Abduction and adduction occur in the frontal plane, moving the leg away from or toward the midline. Internal and external rotation occur in the transverse (horizontal) plane, rotating the thigh around its axis. Because these movements can occur individually and in combination, the hip can move in all planes of motion, and even perform circumduction as a loop of movements through those planes.

So the hip isn’t limited to just one plane, nor is rotation nonexistent; it genuinely moves in all planes, which is why all planes of motion is the best answer.