rotator cuff
Arm-turning muscle group
The rotator cuff is a group of four muscles and their tendons that stabilize the shoulder joint, holding the upper arm bone in the shoulder socket.
Rotator cuff injuries—tears, strains, inflammation—are common in athletes and workers who repeatedly raise their arms overhead: She's out for the season with a torn rotator cuff.
- shoulderUpper arm joint
- scapulaPosterior thoracic bone
- impingementStriking or pressing upon
- humerusUpper arm's long bone
- muscleContractile body tissue
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