What are the actions of each of the rotator cuff muscles?
What are the actions of each of the rotator cuff muscles?
Each one of these muscles is part of the rotator cuff and plays an important role:
- Supraspinatus. This holds your humerus in place and keeps your upper arm stable.
- Infraspinatus. This is the main muscle that lets you rotate and extend your shoulder.
- Teres Minor. This is the smallest rotator cuff muscle.
- Subscapularis.
What are the 4 rotator cuff muscles and what motions does each do?
Supraspinatus controls internal rotation and lifting of the arm. Infraspinatus allows you to externally rotate your arm in the shoulder socket. Teres minor is a small muscle that helps rotate your arm. Subscapularis controls arm abduction (holding your arm out straight, away from your body).
How do you remember the actions of the rotator cuff?
A helpful mnemonic to remember these muscles is “SITS.” The glenohumeral joint is a ball and socket joint and comprises a large spherical humeral head and a small glenoid cavity.
Which of the 4 rotator cuff muscles is most commonly injured?
Trauma or other repetitive use injury can also lead to a rotator cuff tear. The supraspinatus tendon is the most commonly injured tendon of the four tendons because it lies predominantly in the space between the acromion and the humeral head.
How many muscles are in the rotator cuff?
There are four muscle tendons that connect to the shoulder that make up the rotator cuff. Together these four tendons stabilize the upper arm bone to the shoulder socket and allow the wide range of motion in the shoulder.
What are the 4 muscles of the rotator cuff?
The rotator cuff includes the following muscles[1][2][3]:
- Subscapularis.
- Infraspinatus.
- Supraspinatus.
- Teres minor.
What are the four rotator cuff muscles quizlet?
Supraspinatus, infraspinatus,teres minor and subscapularis are known as the rotator cuff muscles. They encompass and stabilize the glenohumeral joint.
What are the cuff muscles?
Share on Pinterest Four muscles make up the rotator cuff: the subscapularis, teres minor, supraspinatus, and infraspinatus. Together they assist in stabilizing the shoulder joint as well as in performing various arm movements. Four muscles and their attached tendons make up the rotator cuff.
Which of the following lists the 4 muscles of the rotator cuff?
The acronym SITS is often used as the name for the collection of muscles that make up the rotator cuff: supraspinatus, infraspinatus, teres minor, and subscapularis.
What are the 4 rotator cuff muscles quizlet?
How to diagnose and treat rotator cuff injuries?
Symptoms. Rotator cuff injuries range in severity from simple inflammation to the complete disruption of the shoulder joint.
