The supraspinatus tendon is inserted into the superior facet of the greater tubercle of the humerus.
- 1 What is the origin insertion and action of the supraspinatus?
- 2 What is the function of the supraspinatus muscle?
- 3 What is the origin and insertion of the shoulder muscles?
- 4 Where is supraspinatus pain felt?
- 5 Where is the supraspinatus in the shoulder?
- 6 Is the supraspinatus part of the rotator cuff?
- 7 Is supraspinatus an external rotator?
- 8 What does supraspinatus mean?
- 9 What is the origin of the supraspinatus muscle?
- 10 Where do rotator cuff muscles attach?
What is the origin insertion and action of the supraspinatus?
The supraspinatus muscle originates from the supraspinous fossa, which is a concave surface at the top of the scapula. From the supraspinous fossa of the scapula, the supraspinatus muscle then extends laterally (outward) and inserts onto the humerus, which is the long bone that makes up the upper arm.
What is the function of the supraspinatus muscle?
As part of the Rotator Cuff, supraspinatus helps to resist the gravitational forces which act on the shoulder joint to pull from the weight of the upper limb downward. It also helps to stabilize the shoulder joint by keeping the head of the humerus firmly pressed medially against the glenoid fossa of the scapula.
What is the origin and insertion of the shoulder muscles?
Origin: Entire under surface of the scapula (subscapular fossea). Insertion: Less tubercle of the humerus. Actions: Internal rotation, Adduction, Extension and stabilization of the glenohumeral joint. Stretching: Externally rotate the shoulder and raise the arm up at the side (abduct).
Where is supraspinatus pain felt?
Supraspinatus pain is felt at the side of the shoulder in the middle section of the deltoid. In some cases, it can be felt further round the front of the shoulder.
Where is the supraspinatus in the shoulder?
The supraspinatus muscle, the most superiorly located of the rotator cuff muscles, resides in the supraspinous fossa of the scapula, superior to the scapular spine.
Is the supraspinatus part of the rotator cuff?
The supraspinatus muscle is the only muscle of the rotator cuff that is not a rotator of the humerus. The infraspinatus is a powerful lateral rotator of the humerus. The tendon of this muscle is sometimes separated from the capsule of the glenohumeral joint by a bursa.
Is supraspinatus an external rotator?
The supraspinatus muscle is responsible for initiating abduction, the infraspinatus and teres minor for controlling external rotation, and the subscapularis for controlling internal rotation.
What does supraspinatus mean?
: a muscle of the back of the shoulder that arises from the supraspinous fossa of the scapula, that inserts into the top of the greater tubercle of the humerus, that is one of the muscles making up the rotator cuff of the shoulder, and that rotates the humerus laterally and helps to abduct the arm.
What is the origin of the supraspinatus muscle?
Origin. The supraspinatus muscle arises from the supraspinous fossa, a shallow depression in the body of the scapula above its spine. The supraspinatus muscle tendon passes laterally beneath the cover of the acromion.
Where do rotator cuff muscles attach?
It helps you make all the motions of your arm and shoulder. The head of your upper arm bone, also called the humerus, fits into the socket of your shoulder blade, or scapula. When you extend your arm out away from your body, the rotator cuff muscles keep it from popping out of the socket, or glenoid.