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The Daily Insight

What causes subscapularis pain

Author

Eleanor Gray

Published May 23, 2026

Subscapularis Tendinitis usually occurs due to a direct trauma to the arm like that in a fall on the shoulders or arm or as a result of a sporting injury. A rupture of the tendon may also occur after a surgical procedure such as a shoulder replacement surgery in which the subscapularis tendon is removed and repaired.

What does a subscapularis strain feel like?

The most common symptom of a subscapularis tear is shoulder pain, especially in the front of the shoulder. You might also hear or feel “clicking” in your shoulder when you rotate your arm. Some symptoms of a subscapularis tear are very similar to symptoms of other rotator cuff tears.

How should I sleep with subscapularis pain?

  1. Sit in a reclined position. You may find sleeping in a reclined position more comfortable than lying flat on your back. …
  2. Lie flat on your back with your injured arm propped up with a pillow. Using a pillow may help reduce stress and pressure on your injured side.
  3. Lie on your uninjured side.

What makes subscapularis tight?

When muscles are sore, they tend to tighten up; and this can affect the surrounding muscles – especially serratus anterior, which attaches directly to the ribs, causing the ribcage to stiffen up. This means that a sore subscapularis may lead to dysfunctional movement of the shoulder blade over the ribs.

How do you test subscapularis?

The patient is asked to press the palm of the hand against the abdomen, through shoulder internal rotation. The test is positive for subscapularis muscle dysfunction if the patient compensates the movement through started wrist flexion, shoulder adduction and shoulder extension.

Can a subscapularis tear heal on its own?

Will a subscapularis tear heal on its own? Small subscapularis tears can often heal without surgery. However, if the tear is large or a full thickness tear which causes significant pain, surgery may be required.

How do you know if your subscapularis is torn?

  1. Pain in the front part of the shoulder, which may get aggravated with upper arm or body movement.
  2. Decreased movement of the joint.
  3. Lifting, twisting and rotation of the arm may be painful.
  4. Weakness of internal rotation.
  5. Anterior shoulder swelling.
  6. Tenderness in the affected part of the joint.

Where does subscapularis refer pain?

Referred pain from trigger points in the subscapularis muscle concentrates in the posterior shoulder region, with spillover into shoulder blade region and down the back of the upper arm. A unique “band” of referred pain around the wrist may occur as well.

What is a positive bear hug test?

Positive bear-hug and belly-press tests suggest a tear of at least 30% of the subscapularis, whereas a positive Napoleon test indicates that greater than 50% of the subscapularis is torn. Furthermore, a positive lift-off test is not found until at least 75% of the subscapularis is torn.

Is the subscapularis part of the rotator cuff?

The subscapularis muscle is one of the four muscles and tendons that surround the shoulder called the rotator cuff. Rotator cuff tears (RCTs) usually involve the infraspinatus or supraspinatus tendons.

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How do you treat subscapularis Tendinosis?

Rest until it is not painful. Apply ice initially to help reduce pain and inflammation. Feel it contracting, then release the tension and start to massage it. Make sure you only massage the muscle and not your nerves.

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.

What is liftoff test?

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 is subscapularis tear?

Tears of the subscapularis tendon are often associated with tears or instability of the long head of biceps tendon. Subscapularis tendon tears may be partial or full thickness. The tears may be due to chronic overload or acute trauma.

What is Sasd bursitis?

The subacromial-subdeltoid bursa (SASD) is a potentially pain-sensitive structure of the glenohumeral joint. Along with the rotator cuff tendons, it has been implicated as a primary pathology in painful shoulder conditions of overhead athletes (eg swimmers, weightlifters, gymnasts, tennis players etc).

What is interstitial tearing?

Interstitial tears (Figure 6), also known as intrasubstance tears or intramuscular cysts, can occur in isolation within the tendon without articular- or bursal-sided extension, or they can also occur in combination with either articular- or bursal-sided partial thickness tears.

Where is your subscapularis tendon?

The subscapularis, located in the front of the shoulder, is one of the four muscles that make up the rotator cuff. It is the most powerful of all the rotator cuff muscles.

How common are subscapularis tears?

A significant subscapularis injury is present in less than 20% of all rotator cuff tears. Even when there is a tear, many of them involve a small area of the tendon that is compensated by the healthy muscles and tendons around the shoulder.

Is a subscapularis tear a rotator cuff tear?

Tears of the subscapularis tendon are less common than supraspinatus and infraspinatus tendon tears (commonly simply known as ‘ rotator cuff tears ‘). However, they can be much more painful, since the restraints to the long head of biceps tendon are often also torn and the biceps tendon dislocates from it’s groove.

What is a SLAP tear?

A SLAP tear is an injury to the labrum of the shoulder, which is the ring of cartilage that surrounds the socket of the shoulder joint.

What is Subscap?

The subscapularis is the largest, strongest muscle of the rotator cuff. The rotator cuff muscles are important in shoulder movement and help maintain glenohumeral joint stability. The subscapularis muscle lies at the anterior surface of the scapula.

What is Dugas test?

[ dōō-gäz′ ] n. A test performed to determine whether an injured shoulder is due to a dislocation or a fracture. If the elbow cannot be made to touch the chest while the hand rests on the opposite shoulder, the injury is a dislocation.

Is subscapularis an internal rotator?

The subscapularis rotates the head of the humerus medially (internal rotation) and adducts it; when the arm is raised, it draws the humerus forward and downward.

What causes subscapularis weakness?

Causes of subscapularis tears Sporting events commonly cause tears to the subscapularis muscle along with the other muscles of the rotator cuff. Traumatic events like falls or car accidents also often cause tears of the subscapularis muscle.