SLAP Tear

A SLAP tear, or superior labrum anterior and posterior tear, is a shoulder injury. It involves tearing the labrum, which is the cartilage ring that surrounds the shoulder socket. This injury can cause pain and restrict the shoulder’s range of motion, making daily activities difficult. SLAP tears are common in athletes who perform repetitive overhead movements such as throwing or swimming. They may also be caused by crashes or falls.

Learning about the causes, symptoms, and treatments for SLAP tears can help people manage their condition effectively.

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Dr Dennis Ng Zhaowen
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Causes of SLAP tears

SLAP tears can occur for a variety of reasons, most involving repetitive shoulder use or trauma. Common causes include:

Repetitive Overhead Activities

Engaging in sports or activities that involve repetitive overhead motions is a common cause of SLAP tears. Over time, repetitive strain on the shoulder can lead to small tears in the labrum that gradually worsen.

Traumatic Injuries

Traumatic injuries are another major cause of SLAP tears. Falling onto an outstretched hand can transfer force from the arm to the shoulder, resulting in a labrum tear. A SLAP tear can also be caused by a direct hit to the shoulder, such as from an accident or collision in contact sports.

Ageing and Degenerative Changes

The labrum and other shoulder muscles can become more fragile and susceptible to injury with age. Degenerative changes in the shoulder joint, such as arthritis, can weaken the labrum. Because of this natural wear and tear, older people are more likely to tear their SLAP even while performing routine tasks with their shoulders.

Shoulder Dislocation

A shoulder dislocation, where the upper arm bone pops out of the shoulder socket, can severely damage the labrum. The force involved in a dislocation can tear the labrum, resulting in a SLAP tear.

Sudden, Forceful Movements

A sudden, forceful movement that overextends or twists the shoulder can cause a SLAP tear. This can happen during a car accident when the seatbelt restrains the body but the shoulder is jolted or during heavy lifting with improper technique.

Previous Shoulder Injuries

People with a history of shoulder injuries, such as rotator cuff tears or previous labral tears, are at a higher risk of developing SLAP tears. The existing damage can weaken the shoulder structure, making it more vulnerable to additional injuries.

Symptoms of a SLAP Tear

A SLAP tear can cause a variety of symptoms, ranging from minor discomfort to severe pain and functional impairment such as:

  • Shoulder Pain
    Pain is usually felt at the front or top of the shoulder and can worsen during overhead activities, lifting, or throwing. The pain may be intermittent at first, but it can become constant as the tear worsens. It may also occur at night, especially when lying on the affected shoulder.
  • Limited Range of Motion
    A SLAP tear can lead to a decreased range of motion in the shoulder. Patients with this condition may have difficulty reaching overhead or behind their backs.
  • Shoulder Weakness
    The shoulder may feel weak or unstable, making it difficult to perform daily activities or participate in sports. This weakness can be particularly noticeable when lifting objects or performing push or pull motions.
  • Popping or Clicking Sensation
    A popping, clicking, or catching sensation in the shoulder can indicate a SLAP tear. These sensations often occur with specific movements, such as lifting the arm or rotating the shoulder. They are caused by the torn labrum catching or moving abnormally within the joint.

Diagnosis of a SLAP Tear

Diagnosing a SLAP tear involves reviewing the patient’s history, conducting a physical examination, and performing imaging studies.

Patient History

The process begins with a discussion of the patient’s symptoms and medical history. Questions typically focus on when the symptoms began, activities that worsen the pain, previous shoulder injuries, and any traumatic events that may have caused the tear.

Physical Examination

A physical examination assesses the shoulder’s range of motion, strength, and stability. Specific tests may be used to reproduce SLAP tear symptoms and identify the injury.

Imaging Studies

Imaging helps confirm the diagnosis and assess the severity of a SLAP tear. MRI, especially with contrast dye (MR arthrogram), provides the clearest view of soft tissues like the labrum. X-rays do not detect labral tears but help rule out fractures or arthritis. A CT scan with contrast dye (CT arthrogram) may be used if MRI is unavailable, offering detailed images of the joint.

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Treatment for SLAP Tears

Treatment for a SLAP tear varies depending on the severity, the patient’s activity level, and overall health.

Non-Surgical Treatment

Non-surgical treatments are often the first approach for managing SLAP tears, particularly when the tear is minor.

Rest and Activity Modification

Resting the shoulder and avoiding activities that aggravate the pain can aid in the initial stages of recovery. Modifying activities to reduce shoulder strain can help manage symptoms.

Physical Therapy

Physical therapy focuses on strengthening the shoulder muscles, restoring range of motion, and enhancing stability to prevent future injuries. A customised exercise programme will be developed based on the patient’s condition.

Medication

Nonsteroidal anti-inflammatory drugs such as ibuprofen or naproxen can help reduce pain and inflammation. In some cases, corticosteroid injections may be recommended to relieve pain and inflammation more effectively.

Ice and Heat Therapy

Ice can help reduce inflammation and pain in the acute phase of a shoulder injury. Heat therapy can help relax tense muscles and improve blood flow to the affected area during the later stages of recovery. Patients should alternate between using an ice or heat pack on the affected shoulder for 15-20 minutes at a time, 3-4 times per day.

Surgical Treatment

Surgical treatment may be required for severe SLAP tears or when non-surgical treatments fail to relieve symptoms. Surgery aims to repair the torn labrum and restore shoulder stability and function.

SLAP Tear Surgery

SLAP tear surgery aims to repair a tear in the superior labrum, which is the ring of cartilage surrounding the shoulder socket. The procedure involves making small incisions around the shoulder, through which a tiny camera (arthroscope) is inserted to guide the surgical tools. The torn labrum is then repaired or reattached using sutures or anchors. The incisions are closed with sutures or staples and a sterile dressing is applied.

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Dr. Dennis Ng is dedicated to understanding your unique needs, focusing on restoring
your active lifestyle and overall well-being.

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Specialised Experience In Complex Procedures

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Dr Dennis Ng Zhaowen

  • Senior Consultant Orthopaedic Specialist
MBBS (Singapore)
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MRCSEd
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MMED
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FRCSEdOrth (Gold Medal Award)

Before private practice, Dr Dennis Ng was the former Deputy Head of the Shoulder & Elbow Division and Sports Knee Division in National University Hospital.

He completed his fellowship at the prestigious Fowler Kennedy Sports Medicine Centre in London, Ontario, Canada, and has rich experience treating professional athletes and returning them to sports. 

Special Areas of interests include keyhole and reconstructive procedures of the shoulder and elbow. 

Common procedures include frozen shoulder release, rotator cuff repair, SLAP/Labrum repair, shoulder stabilization, tennis elbow release etc.

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    Mount Elizabeth Novena Specialist Centre

    38 Irrawaddy Road #08-41
    Singapore 329563

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    Saturday: 9am – 1pm
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    Singapore 258499

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    Frequently Asked Questions (FAQs)

    Can a SLAP tear heal on its own without surgery?

    Some minor SLAP tears can heal with non-surgical treatment, such as rest, physical therapy, and activity modifications, but it may take weeks or months. However, complete healing without surgery is uncommon, especially in cases involving athletes or individuals with severe tears.

    What are the risks of delaying treatment for a SLAP tear?

    Delaying treatment can worsen the tear over time, increasing pain and limiting shoulder function. In some cases, untreated SLAP tears can lead to chronic instability, rotator cuff injuries, or shoulder arthritis, requiring more complex surgical intervention in the future.

    Can I return to sports or weightlifting after SLAP tear surgery?

    Yes, but it requires a gradual return through a rehabilitation programme. Patients usually begin with light exercises, progressing to resistance training and sport-specific activities. It may take 9-12 months to resume high-intensity sports or weightlifting safely. Rushing the recovery process increases the risk of re-injury.

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