Overview
A SLAP tear is a type of injury to the labrum, a ring of tough cartilage that lines the socket of the shoulder joint. "SLAP" stands for superior labrum anterior to posterior, meaning the tear involves the top portion of the labrum and often affects where the biceps tendon attaches. When the labrum is damaged, it can reduce shoulder stability and irritate nearby structures, which may cause pain, catching, or weakness. Symptoms commonly worsen with overhead activity or movements that put the biceps/labrum under tension.
Symptoms
People with a SLAP tear often feel pain deep in the front of the shoulder, especially with overhead reaching, throwing, or pushing movements. Some notice clicking, popping, or a catching sensation, and the shoulder may feel unstable during certain arm positions. Strength can feel reduced, particularly with lifting or resisting movement, and discomfort may linger after activity. In some cases, pain can radiate slightly toward the upper arm or increase when the arm is positioned behind the back.
Causes
SLAP tears usually develop from a specific injury (such as a fall onto an outstretched arm) or from repetitive overhead or throwing motions that overload the shoulder. Over time, degeneration can also weaken the labrum, making it more susceptible to tearing. Because the biceps tendon is attached near the injured area, traction and friction can contribute to ongoing irritation and pain.
Risk Factors
Risk is higher in people who perform repetitive overhead activities, such as pitchers, swimmers, tennis players, and workers who frequently lift overhead. Age-related degeneration can increase susceptibility, and having a previous shoulder injury or instability episodes may raise risk. Tight shoulder mechanics, weakness of the rotator cuff or scapular stabilizers, and inadequate recovery between high-demand activities can also contribute.
Prevention
You can lower risk by strengthening the rotator cuff and muscles that control the shoulder blade, which helps reduce abnormal stress on the labrum. Gradually progressing training volume, avoiding sudden spikes in throwing or overhead workload, and using proper technique can help protect the shoulder. Taking recovery seriously, staying flexible through the chest and upper back, and addressing early pain before it worsens can reduce the chance of progression.
How the Diagnosis Is Evaluated
Evaluation starts with a detailed history about the onset, type of activity, and any sensations of clicking or instability. A physical exam helps identify labral/biceps involvement using range-of-motion, strength, and provocative tests, and it also checks for rotator cuff and instability conditions. Imaging may include X-rays to rule out bone problems, while magnetic resonance imaging (MRI) or MR arthrogram can better visualize the labrum and related structures when the diagnosis is uncertain or symptoms persist.
Nonsurgical Treatment Options
Non-surgical care focuses on reducing irritation, restoring shoulder mechanics, and improving strength and stability. This typically includes activity modification, short-term use of anti-inflammatory medications if appropriate, and physical therapy emphasizing rotator cuff strengthening, scapular stabilization, and gradual return to overhead or throwing activity. A corticosteroid injection may help calm inflammation around the biceps-labral region when pain limits rehabilitation, often used alongside therapy rather than as a standalone treatment. Some patients consider biologic options such as platelet rich plasma (PRP) injections, which may be discussed when conservative therapy does not fully control symptoms. The goal is to improve function while avoiding movements that repeatedly stress the torn labrum during healing.
When to Seek Medical Attention
Seek prompt medical attention if you have sudden severe shoulder pain after an injury, a visible deformity, or you cannot lift the arm or use the shoulder normally. Contact a clinician urgently if symptoms rapidly worsen, you develop fever or redness with severe swelling, or you notice numbness, tingling, or progressive weakness. Get evaluated sooner if pain persists despite rest and home care, or if mechanical symptoms like catching or instability repeatedly interfere with daily activities.
Frequently Asked Questions
It often causes deep front shoulder pain with overhead activity, along with clicking, catching, or a sense that the shoulder is unstable.
Clinicians usually use a physical exam and may order MRI or MR arthrogram to visualize the labrum, with X-rays sometimes used to rule out other issues.
Next Steps
If your shoulder pain is provoked by overhead movement or you have catching or instability sensations, start by limiting the aggravating activity and scheduling a clinical evaluation for a targeted exam. Ask whether imaging is needed based on your specific findings and how long symptoms have been present. Consistent physical therapy is often the most effective next step for improving function, so consider beginning a supervised rehab plan when appropriate.