What action does the subscapularis perform?

What action does the subscapularis perform?

Each muscle of the rotator cuff also performs its own specific role, and the precise action of subscapularis is to internally rotate the arm on the shoulder joint.

How do you test for subscapularis?

The belly-press test is used to isolate the subscapularis muscle, to test the subscapularis muscle for tear or dysfunction. It is often used as an alternative to the lift-off test, when the lift-off test can’t be performed because of pain or limited internal rotation range of motion of the shoulder.

What does a positive Gerber’s lift-off test indicate?

Positive. The ability to actively lift the dorsum of the hand off the back constitutes a normal lift-off test. Inability to move the dorsum off the back constitutes an abnormal lift-off test and indicates subscapularis rupture or dysfunction.

What action does the supraspinatus perform?

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 are the actions of the Coracobrachialis?

The main actions of the coracobrachialis muscle are bending the arm (flexion) and pulling the arm towards the trunk (adduction) at the shoulder joint. When the arm is abducted and extended, the coracobrachialis muscle acts as a strong antagonist to the deltoid muscle.

What are subscapularis precautions?

Precautions: Same precautions and limitations apply for repair with TSA, RCR, or other. shoulder surgical intervention. Phase I (1-5 days post-op) • Initiate elbow and wrist ROM and grip strengthening. • Wear sling continuously unless in therapy or doing HEP.

Can subscapularis be palpated?

The subscapularis muscle belly can only be reached by bringing the hand in between the scapula and the thorax. It cannot really be palpated. The tendinous insertion on the lesser tuberosity, however, can easily be palpated.

What does the lift off test test for?

The lift off test is used to assess for subscapularis rupture or dysfunction, which may be isolated or related to anterior dislocation.

How do you assess supraspinatus?

The supraspinatus can be tested by having the patient abduct the shoulders to 90 degrees in forward flexion with the thumbs pointing downward. The patient then attempts to elevate the arms against examiner resistance (Figure 3). This is often referred to as the “empty can” test.

What is the lift off test for subscapularis?

The Lift Off Test (also knows as Gerber’s Test) is commonly used in orthopedic examinations to test for a tear in subscapularis tendon or subscapularis tendonitis. It can also show scapular instability. Read more about rotator cuff tears. The Bear Hug Test is another test for subscapularis integrity.

What is Gerber’s Lift Off test used for?

Gerber’s Lift Off Test – Orthopedic Shoulder Examination The Lift Off Test (also knows as Gerber’s Test) is commonly used in orthopedic examinations to test for a tear in subscapularis tendon or subscapularis tendonitis. It can also show scapular instability. Read more about rotator cuff tears.

What happens when the subscapularis is contracted?

Contraction of the subscapularis can cause medial rotation and depression of the humerus at the glenuhumeral joint. In certain positions, it also helps produce extension and adduction of the shoulder joint.

What is the bear hug test for subscapularis integrity?

Read more about rotator cuff tears. The Bear Hug Test is another test for subscapularis integrity. This test is usually performed with the patient in standing but can also be performed with the patient in sitting.