What Is The Insertion Of The Supraspinatus?

The supraspinatus tendon is inserted into

the superior facet of the greater tubercle of the humerus

.

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 supraspinatus tendon insertion?

The supraspinatus muscle and tendon both pass deep to the acromion process to insert on

the super facet of the greater tuberosity of the humerus

— the inferior portion of the tendon blends with the joint capsule about 1 cm before the attachment on the bone.

What action does the supraspinatus 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 is the insertion of the infraspinatus?

The infraspinatus has actions on the head of the humerus. The infraspinatus insertion at

the middle facet of the glenoid tubercle

allows it to exert a lateral or external rotational force. This force is synergistic with the teres minor, as it inserts on the inferior facet of the glenoid tubercle.

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.

Can a full thickness tear of the supraspinatus heal without surgery?

Even though

most tears cannot heal on their own

, good function can often be achieved without surgery. If, however, you are active and use your arm for overhead work or sports, then surgery is most often recommended because many tears will not heal without surgery.

How do I strengthen my supraspinatus tendon?

Relax your shoulders and

gently pull one arm across

your chest as far as possible while holding at your upper arm. You will feel the posterior deltoid muscle stretch at the back of your shoulder. Hold the stretch for around half a minute and then relax for half a minute.

What causes a supraspinatus tendon tear?

The etiology of supraspinatus tears is multifactorial,

consisting of age-related degeneration, microtrauma and macrotrauma

. The incidence increases with the age to about 50% during the 80s, mostly affecting the dominant arm. Injury and degeneration are the two main causes of rotator cuff tears.

Why is the supraspinatus most commonly injured?

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 do you activate supraspinatus?

Using the criteria that the best exercise to isolate and strengthen the supraspinatus should maximize supraspinatus activity while minimizing deltoid activity, the researchers determined that

shoulder external rotation at 0° of abduction with an elastic band and prone external rotation

were preferable.

How do you treat supraspinatus pain?

1. Rest. Resting the shoulder and upper arm is necessary at the first sign of pain from an injury. …
2. Ice. …
3. Anti-Inflammatory Medication. …
4. EPAT Therapy Treatment. …
5. Kinesiology Tape (KT Tape) or Shoulder Sling. …
6. Physical Therapy. …
7. Corticosteroid Injection. …
8. Rotator Cuff Surgery.

How do you rehab a supraspinatus tear?

1. Pendulum swing. Stand to the side of a table, steady chair, or railing and place the hand of your uninjured arm on the object for stability. …
2. Crossover arm stretch. Stand up straight and relax your shoulders. …
3. Standing row. …
4. Internal rotation. …
5. Posterior stretch.

What movement does the supraspinatus perform?

The supraspinatus muscle assists

abduction of the arm and stabilization of the humerus head

during arm movements. TrPs within the supraspinatus muscle elicit a referred pain felt as deep pain around the shoulder, particularly over the mid-deltoid region.

What is the difference between supraspinatus and infraspinatus?

Supraspinatus: This muscle begins over the spine of the shoulder blade and terminates near the rounded top of the humerus bone, known as the greater tuberosity. Infraspinatus: This muscle begins underneath the spine of the shoulder blade and connects to the back of the humerus.

Where does the infraspinatus muscle insertion?