Concept:The sterno-clavicular joint connects the clavicle to the sternum. It is classified as a gliding (plane) joint because its primary movement is a sliding motion between flat bone surfaces.
Explanation:This joint is a synovial joint where the medial end of the clavicle glides over the manubrium of the sternum.
Strong ligaments reinforce it, but the functional movement is purely sliding.
Other joint types do not match:
- Hinge joint (like the elbow) allows bending in one plane only.
- Condyloid joint (like the wrist) allows movement in two planes.
- Pivot joint (like the neck) allows rotation around one axis.
Therefore, the sterno-clavicular joint fits the gliding joint description for board exam purposes.
Answer:Gliding Joint (Option C)