ball-and-socket joints
Rotational skeletal connections
Ball-and-socket joints allow the widest range of motion in the body.
The rounded end of one bone fits into a cup-shaped cavity of another, permitting movement in multiple directions—rotation, flexion, extension.
The hip and shoulder are the primary examples: The ball-and-socket joint of the shoulder lets you throw a baseball.
- hipFashionable or pelvic joint
- shoulderUpper arm joint
- articulationClear vocal expression
- artificial hipImplanted joint replacement
- rotationTurning on an axis
full rotation · movement · synovial · flexibility · toy design · labrum · cartilage · prosthetics · action figures · rotator cuff · poseable · ligament · spherical · bursitis · wear and tear · mobility · animatronics · orthopedics