ball-and-socket joint
Học thuậtThân thiện
Definition
- Noun:
- A type of synovial joint: A "ball-and-socket joint" is a freely moving joint in which the rounded, ball-like end (head) of one bone fits into a cup-like socket of another bone, allowing for a wide range of motion.
- A mechanical coupling: In engineering, a "ball-and-socket joint" is a mechanical device that allows one part to rotate freely within a socket, similar to the anatomical structure.
Examples of Usage
- Noun:
- The hip is a classic example of a ball-and-socket joint.
- The robot's arm utilizes a ball-and-socket joint for maximum flexibility.
- Injury to the ball-and-socket joint of the shoulder can limit mobility.
Advanced Usage
- Anatomical context: The term is often used to describe joints that allow movement in multiple planes, including flexion, extension, abduction, adduction, and rotation.
- The design of a ball-and-socket joint provides great stability along with a wide range of motion.
Variants and Related Words
- Synovial joint (n): The broader category of freely movable joints, which includes the ball-and-socket type.
- Enarthrosis (n): A technical, medical synonym for a ball-and-socket joint.
- Spheroidal joint (n): Another technical term for this type of joint.
Synonyms
- Enarthrodial joint: A formal synonym used in anatomy.
- Spheroidal joint: Emphasizes the spherical shape of the articulating surfaces.
Related Phrases
- Joint capsule: The fibrous structure that encloses a ball-and-socket joint.
- Articular cartilage: The smooth tissue covering the ends of bones in a ball-and-socket joint.
Notes
This term is a compound noun. Its meaning is specific and technical, primarily used in the fields of anatomy, biology, medicine, and mechanical engineering.
Noun
- a joint that can rotate within a socket
- a freely moving joint in which a sphere on the head of one bone fits into a rounded cavity in the other bone