Question

the elbow joint is an example of which of the following joints?

ball-and-socket
hinge
pivot
planar

Explanation:

Identify the joint type of the elbow

The elbow joint (specifically the humeroulnar joint) allows movement primarily in one plane (flexion and extension), which is characteristic of a uniaxial hinge joint.

Evaluate the given options

• Ball-and-Socket: Allows multiaxial movement (e.g., shoulder, hip).
• Hinge: Allows uniaxial movement like a door hinge (e.g., elbow, knee).
• Pivot: Allows rotation around a single axis (e.g., atlantoaxial joint).
• Planar: Allows gliding movements (e.g., intercarpal joints).

Answer:

• Ball-and-Socket
• Hinge (Correct answer)
• Pivot
• Planar