What happens when the supraspinatus contracts?
Function. The supraspinatus muscle performs abduction of the arm, and pulls the head of the humerus medially towards the glenoid cavity. It independently prevents the head of the humerus to slip inferiorly.
What does the supraspinatus muscle do?
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 does supraspinatus mean in anatomy?
: 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 innervation of the supraspinatus?
The supraspinatus muscle originates from the supraspinous fossa of the posterior scapula. With innervation from the suprascapular nerve, the supraspinatus initiates and aids the deltoid in abduction of the arm, and acts in synergy with the rotator cuff muscles.
How do you treat a supraspinatus tear?
A supraspinatus tear can be treated with medication, physical therapy, steroid injections, or surgery:
- medication may include pain-relief and anti-inflammatory drugs to reduce swelling in the shoulder.
- physical therapy involves advice on exercises to carry out which restore flexibility and strength to your shoulder.
What is the function of the supraspinatus muscle?
Together with the other rotator cuff muscles, supraspinatus stabilizes the glenohumeral (shoulder) joint during the movements of the upper limb. Additionally, it assists in the abduction of the arm. This article will discuss the anatomy and function of supraspinatus muscle.
Which is the empty can test for supraspinatus?
The Empty Can Test, along with the Full Can Test is a commonly used orthopedic examination test for supraspinatus impingement or integrity of the supraspinatus muscle and tendon. The test is usually easier in sitting or standing. On the side to be tested the one of the examiner’s hands stabilizes shoulder girdle.
What causes pain in the supraspinatus tendon?
Supraspinatus tendinosis is a common source of shoulder pain. Tendinosis is inflammation of a tendon from overuse or repetitive strain. Supraspinatus tendinosis is caused by inflammation of the supraspinatus tendon, which is one of the rotator cuff tendons in the shoulder joint.
Where does the C5 nerve innervate the supraspinatus muscle?
The suprascapular nerve (C5) innervates the supraspinatus muscle as well as the infraspinatus muscle.
