What Is A Subscapularis Tendon Tear?

A subscapularis tendon tear is an injury to the largest rotator cuff muscle that stabilizes the front of your shoulder and assists in lifting and twisting movements across the chest. This injury often develops after a sudden trauma, such as a fall, or from repetitive overhead motion that overloads the tendon during internal rotation of the arm.

At Total Orthopedics and Sports Medicine, our surgeon, Dr. Charles Ruotolo, evaluates your shoulder with advanced imaging to identify the exact pattern of the torn subscapularis tendon. He often recommends rest, targeted therapy, and injections for smaller tendon tears. However, if the tear is severe, he may recommend arthroscopic rotator cuff surgery to support a safe return to your normal activities and sports. Call 855-321-6784 to book an appointment in Deer Park.

How Does A Subscapularis Tendon Tear Affect Your Shoulder?

A subscapularis tendon tear often causes anterior shoulder pain and weakness when you turn your arm inward (internal rotation). As the tear worsens, you may notice a clicking or popping sensation with movement. Over time, the injured tendon can also irritate the nearby biceps tendon, leading to aching in the front of the arm and loss of strength during overhead movements. If left untreated, these problems can progress into the following long-term shoulder conditions:

• Limited movement: The shoulder may lose smooth, full motion over time.
• Shoulder stiffness: The joint can become tight and hard to move.
• Supraspinatus tendon instability: The tendon may slip out of its normal groove, as 80% of subscapularis tears involve the supraspinatus tendon.
• Loss of internal rotation: You may struggle to reach behind your back or tuck in a shirt.
• Reduced shoulder function: Daily tasks, exercise, and sports can become harder.
• Tendon retraction: The torn tendon can pull farther away from the bone, making repair more difficult.
• Muscle degeneration: The muscle can gradually lose size and strength.
• Fatty infiltration: Fat can accumulate within the injured muscle and affect shoulder function.

What Are The Most Common Causes Of A Subscapularis Tear?

A subscapularis tear most often results from acute trauma, chronic overuse, or age-related degeneration. In younger patients, the injury often follows a fall on an outstretched arm or a sudden force that pulls the shoulder backward. In older adults, long-term tendon wear and repeated overhead activity often place greater stress on the tendon, gradually leading to tears.

In addition, the following risk factors can also increase the risk of subscapularis injury:

• Forceful twisting of the arm during contact sports.
• Poor posture, such as rounded shoulders.
• Subscapularis tears occur in 19-49% of rotator cuff injuries.
• Weak supporting shoulder muscles, such as the latissimus dorsi.
• Subcoracoid impingement (friction between the tendon and a shoulder bone).
• Biceps tendon subluxation (when the biceps tendon slips out of its groove and rubs against nearby tissue).
• Previous ligament injury, such as a transverse humeral ligament tear

Who Is Most At Risk For A Subscapularis Tendon Tear?

Men between 30 and 50 years old commonly face a higher risk of a subscapularis tendon tear. Overhead athletes such as baseball pitchers, tennis players, and swimmers also place greater strain on this tendon due to repeated motion. Beyond that, older adults with prior shoulder surgery or rotator cuff disease may face a higher risk of tendon injury due to weaker tissue quality and long-term shoulder joint strain.

Why Does A Subscapularis Tear Cause Biceps Tendon Pain?

A subscapularis tear causes biceps tendon pain because it disrupts the sling support system that keeps the long head of the biceps tendon stable in the shoulder. Once that support weakens, the tendon can slip out of its bicipital groove and start moving abnormally. As that unstable tendon rubs against nearby bone, it creates friction, which can trigger front shoulder pain and inflammation.

In many cases, the tear also affects the superior glenohumeral ligament and coracohumeral ligament, which form key parts of the biceps pulley system. This combined injury increases tendon instability and places more strain on the shoulder joint during movement. As a result, you may notice a snapping sensation or soreness that gets worse when you lift or rotate the arm.

When Should You See A Doctor For Shoulder Pain?

You should consult Dr. Charles Ruotolo if your shoulder pain lasts 2 to 4 weeks or longer, or limits your daily activities despite rest and activity modification. You should also seek immediate medical care if you notice a visible deformity, numbness, sudden severe pain, or a clear loss of arm movement after an injury. This early diagnosis can identify the cause of your symptoms, prevent further damage, and guide the right treatment plan.

In addition, you should consult our orthopedic specialist, Dr. Charles Ruotolo, if you notice the following warning signs:

• Weakness when you lift or rotate your arm.
• A popping sensation at the time of injury.
• Swelling or bruising after trauma.
• Stiffness that limits shoulder movement.
• Fever with shoulder pain.
• Redness or warmth around the joint.
• Drainage or signs of infection near the shoulder.

How Do Shoulder Specialists Diagnose A Subscapularis Tear?

Shoulder specialists perform a detailed physical exam and review your injury mechanism to diagnose a subscapularis tear. They also order imaging tests such as X-rays and ultrasound to confirm the injury and assess the extent of tendon damage. In severe cases, conventional magnetic resonance imaging (MRI) scans help identify damaged tendon fibers, hidden lesions, and age-related degeneration.

In fact, a PubMed study found an MRI sensitivity of about 71.4% for subscapularis tears. If needed, they may use minimally invasive arthroscopy to visualize the torn tendon directly and confirm findings on imaging. During the examination, specialists often perform tests such as the bear hug test, Napoleon test, belly-press test, and Lift-off test to diagnose subscapularis tendon tears. Here is how these tests help assess weakness, pain, and loss of internal rotation, which often point to tendon damage:

• Belly-Press Test: Detects subscapularis weakness during a stomach press.
• Lift-Off Test: Shows weakness when you lift the hand off the lower back.
• Bear Hug Test: Reveals pain or weakness during a resisted shoulder hold.
• Napoleon Test: Shows weakness during an abdominal press.

What Are The Different Types Of Subscapularis Tears?

Subscapularis tears can be partial-thickness (a tear that affects only part of the tendon) or full-thickness (a tear that goes through the entire tendon). Doctors also classify them as isolated or combined tears based on the amount of tendon involvement. For example, isolated tears affect only the subscapularis and often occur in younger patients after a traumatic injury. In contrast, combined tears affect the subscapularis along with the supraspinatus tendon or other muscles.

In addition, surgeons use the following Yoo and Rhee classification system to grade the tear severity and design the right treatment plan:

• Type I: Fraying or a longitudinal split in the leading edge of the tendon.
• Type IIA: Less than 50% detachment of the first facet.
• Type IIB: More than 50% detachment of the first facet.
• Type III: A full-thickness tear of the entire first facet with a lateral hood tear.
• Type IV: Exposure of the first and second facets with significant medial retraction (tendon pullback toward the center).
• Type V: A complete subscapularis tear that extends into the muscular portion.

Can A Subscapularis Tear Heal Without Surgery?

Yes, a small or partial subscapularis tear can often heal without surgery. In many cases, rest, anti-inflammatory medications, and activity changes ease irritation and support tissue recovery. Doctors also recommend guided exercises to improve shoulder control in older adults who engage in low-demand activities. During the early recovery period, ice or heat can reduce soreness, especially within the first 48 to 72 hours.

In addition, the following advanced non-surgical treatment options improve shoulder function and support tendon healing:

Regenerative Therapies

PRP therapy uses a concentrated sample of your own platelets to support healing in the small tear. In this treatment, your doctor injects the platelet-rich fluid into the injured area to reduce inflammation and stimulate tissue repair. As a result, you may notice better shoulder stability and less ongoing discomfort. Similarly, prolotherapy triggers a local healing response in the damaged tissue. This response can strengthen the tendon over time by encouraging the body to repair the weak area.

Corticosteroid Injections

Corticosteroid injections reduce severe inflammation and sharp pain during a flare-up. However, doctors usually limit them to 2 to 3 injections per year in the same joint, as repeated injections can weaken tendon tissue over time. In some cases, corticosteroid injections may slow tendon healing and increase the risk of re-tear, especially when overused.

Viscosupplementation

According to NIH research, intra-articular hyaluronic acid (HA) injection can reduce pain and improve shoulder function in patients with rotator cuff tears. In that review, researchers evaluated 1,102 patients across 11 prospective studies and compared HA injections with corticosteroid injections, target exercises, saline injections, and control groups. After the analysis, they found that HA improved VAS (pain score) and functional outcomes across all reviewed trials.

Dry Needling or Acupuncture

Dry needling or acupuncture can reduce muscle tightness around the shoulder that often develops due to compensatory movements. This tension often increases discomfort and limits smooth movement. By easing these tight areas, the shoulder may move more comfortably during recovery. In many cases, doctors recommend this option alongside exercise-based treatment to improve muscle balance and shoulder function after acute tears.

Who Is The Right Candidate For Subscapularis Repair Surgery?

Our fellowship-trained surgeon, Dr. Charles Ruotolo, may recommend subscapularis repair surgery if your symptoms persist despite 3 to 4 months of conservative treatment such as rest and medication. He also recommends this procedure for active, healthy individuals with an acute traumatic tear or a full-thickness subscapularis tear that causes significant pain and loss of function.

Moreover, patients whose MRI scans show strong muscle tissue without significant fatty infiltration or muscle atrophy may also require surgery. In such cases, timely surgical repair may help restore function, reduce pain, and improve shoulder strength. In fact, research published in the Indian Journal of Orthopedics found that arthroscopic subscapularis tendon repair improved pain in about 95% of cases.

However, our surgeon, Dr. Charles Ruotolo, may not recommend surgery if you have the following risk factors:

• Active infection.
• Severe medical illness that makes anesthesia unsafe.
• Severe muscle atrophy or major tendon retraction.
• Advanced fatty degeneration on MRI.
• Rotator cuff tear arthropathy with severe shoulder arthritis.

What Happens During Subscapularis Repair Surgery?

Subscapularis repair surgery restores the torn tendon at the front of the shoulder and helps recover shoulder strength and stability. During surgery, surgeons use general anesthesia and make small incisions using a camera and specialized instruments. Then they examine the joint, identify the tear, and remove damaged tissue to create enough space for the repair.

However, if the subscapularis tendon has retracted (pulled back), the surgeon performs soft-tissue releases and prepares the surface of the humerus (upper arm bone) to support tendon reattachment. After that, the surgeon uses strong sutures and small anchors to secure the tendon back to the bone.

Moreover, if the long head of the biceps tendon is damaged, the surgeon may perform biceps tenodesis to reduce pain and improve function. For chronic or severe tears, the tendon may not allow a standard repair. In these cases, the surgeon may perform a pectoralis major transfer to restore movement and support shoulder function. This procedure helps when the tendon cannot return to its normal attachment.

How Long Does Recovery Take After Subscapularis Surgery?

Subscapularis tendons typically take 6-12 weeks to heal after surgery. However, full strength and complete recovery can take up to 6-12 months after repair. This timeline often varies based on your age, tear size, tissue quality, general health, and commitment to the rehabilitation plan. For this reason, our surgeon, Dr. Charles Ruotolo, often recommends the following structured approach to ensure a smooth healing process:

Protection Phase (Weeks 0 to 6)

You should wear a special sling and abduction pillow full‑time to protect the repaired subscapularis tendon and limit sudden shoulder motion. This constant support reduces strain on the repair so the tendon attaches firmly to the bone. During this time, you should also avoid using the arm for daily tasks, such as lifting objects, as these movements place stress on the front of the shoulder. Around 1–2 weeks after surgery, your medical care team usually guides gentle passive range‑of‑motion therapy to maintain shoulder flexibility while the tendon heals.

Mobility & Endurance Phase (Weeks 6 to 12)

According to research published in the International Journal of Sports Physical Therapy, this phase focuses on safe active motion, better endurance, and shoulder control. During these weeks, you may perform a full active range of motion and low‑load exercises. However, you still avoid overhead lifting, fast jerks, and repetitive heavy tasks. At the same time, you can handle basic tasks while you still protect the healing subscapularis tendon from excess stress.

Strength Phase (Weeks 12 to 20)

As recovery progresses, you should start strengthening exercises around 3 months after arthroscopic repair. These exercises help rebuild strength and subscapularis muscle control around the shoulder. In this phase, your surgeon gradually increases your activity level and guides you through strengthening work such as:

• Resisted Internal Rotation With Band: Builds focused subscapularis strength and control.
• Scapular Retraction and Rowing Drills: Improves shoulder blade stability for smoother arm motion.
• Wall or Table Push‑Up: Increases joint stability and overall rotator cuff activation.
• Rhythmic Stabilization in Supine: Enhances shoulder reflexes and joint position sense (proprioception).
• Cross‑Body Shoulder Stretch: Reduces tightness and improves cross‑body reach.
• Towel Slide Flexion Drills: Maintains forward elevation with minimal stress on the repair.

Return Phase (Months 5 to 12)

Once your surgeon confirms smooth tendon healing, you gradually resume heavier activities, overhead tasks, and sports that load the shoulder. Many young people also return to daily activities around 6 months. In contrast, overhead athletes and heavy laborers often need 9–12 months to regain normal strength and endurance. During this time, your surgeon adjusts your program based on your overall progress, so you return to full activity with a stable surgical repair and strong rotator cuff muscles.

Consult Dr. Charles Ruotolo For A Personalized Subscapularis Tear Treatment in Deer Park!

If your subscapularis tendon tears, you may struggle to perform everyday actions like opening doors, reaching into a back pocket, or tucking in your shirt, which can affect your independence. Over time, the ongoing pain, disturbed sleep, and activity limits can also affect your mood, energy, and overall quality of life.

As a Castle Connolly Top Doctor, our surgeon, Dr. Charles Ruotolo, at Total Orthopedics and Sports Medicine, reviews your age, tear severity, activity level, job demands, and sports goals before recommending treatment. Based on these factors, he designs a personalized treatment plan to control pain, protect the tendon, and restore shoulder function. He also schedules regular follow-up visits to help you return to daily tasks and activities. Call 855-321-6784 or visit our Deer Park clinic for pain relief.

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