What is a SLAP tear in simple terms?

A SLAP tear is an injury to the top (superior) part of the ring of cartilage around the shoulder socket, the labrum, running from front to back (anterior to posterior). It sits where the biceps tendon anchors to the socket, so it can cause deep shoulder pain, clicking, and, in throwers, a loss of power. Most clinically important tears are Snyder type II, where the labrum and biceps anchor detach from the bone.

Is the O'Brien test accurate for a SLAP tear?

Not on its own. The 1998 study that introduced the O'Brien active compression test reported near-perfect accuracy, but independent studies found much weaker performance, with the positive likelihood ratio losing statistical significance in pooled analysis. It is a reasonable screening test and a useful part of a cluster, but it cannot confirm or exclude a SLAP tear by itself, and pain it provokes over the AC joint should be interpreted as AC joint pain rather than a labral tear.

Can a SLAP tear heal without surgery?

Many isolated SLAP tears are managed successfully without surgery. Rehabilitation that restores posterior shoulder flexibility, corrects glenohumeral internal rotation deficit, improves scapular control, and strengthens the rotator cuff helps a majority of patients. Return to sport after rehabilitation is roughly fifty-fifty overall and higher among those who complete the full program. Surgery is reserved for lesions that fail a fair trial of conservative care, with the choice between repair and biceps tenodesis depending heavily on age.

Why do so many people have a SLAP tear on MRI but no pain?

Superior labral changes are common age-related findings. In studies of pain-free adults in their late forties to sixties, radiologists reported superior labral tears in more than half of shoulders, and the rate rises further with age. This is why a labral tear on a scan must always be interpreted alongside symptoms. A positive MRI does not prove that the labrum is the source of the pain.

What is the difference between a SLAP repair and a biceps tenodesis?

A SLAP repair reattaches the torn superior labrum and biceps anchor to the bone with suture anchors. A biceps tenodesis detaches the biceps from the labrum and fixes it lower on the humerus, removing the painful pull on the labral anchor. In older patients, SLAP repair tends to cause stiffness and a higher revision rate, so tenodesis is often preferred and has shown higher return-to-sport and satisfaction rates with fewer reoperations. In young throwers the biceps contributes to stability, so repair is usually favoured over routine tenodesis.

SLAP Tear: Symptoms, Tests, and Treatment Explained

Overview

A SLAP tear is an injury to the superior labrum of the shoulder that runs from anterior to posterior (hence the acronym SLAP), centred on the anchor where the long head of the biceps tendon attaches to the top of the glenoid. Because that one piece of tissue is both a passive stabiliser of the glenohumeral joint and the foothold of the biceps, a tear here can produce deep, hard-to-localise shoulder pain, painful clicking, and in overhead athletes a loss of throwing power.

SLAP tears are one of the most over-diagnosed and over-operated lesions in the shoulder, and the bedside examination is genuinely difficult. The physical tests look impressive in the papers that introduced them and far weaker in independent studies, and superior labral changes are extremely common on MRI in shoulders that do not hurt at all. This guide walks through the anatomy, the classification, the tests with their real accuracy, and how clinicians and patients should weigh diagnosis against treatment.

The superior labrum and biceps anchor

The glenoid labrum is a rim of fibrocartilage around the shallow glenoid socket that deepens the socket, increases the contact area with the humeral head, and serves as an attachment for the capsule and glenohumeral ligaments. The superior portion of this rim blends with the tendon of the long head of biceps at the supraglenoid tubercle. This combined structure is often called the biceps-labral complex.

Two features make the superior labrum vulnerable. First, it is the least vascular and least firmly attached part of the rim, with a normal sublabral recess that can be mistaken for a tear. Second, every time the biceps contracts or the arm is loaded in the cocked, externally rotated position, force is transmitted directly through the biceps anchor into the superior labrum. Repetitive overhead load and traction concentrate stress exactly where SLAP tears occur.

How SLAP tears are classified

Snyder and colleagues described and named SLAP lesions in 1990, dividing them into four types. Maffet later added types V to VII for patterns the original system could not capture, and subsequent authors extended the list further. The clinically important point is that most symptomatic, repairable lesions are type II.

Type I: fraying and degeneration of the inner edge of the superior labrum, with the biceps anchor still firmly attached. Common with age and often an incidental finding.

Type II: detachment of the superior labrum and the biceps anchor from the glenoid. This is the most common clinically relevant pattern and the one usually meant by a true SLAP tear.

Type III: a bucket-handle tear of the superior labrum, with the biceps anchor still intact.

Type IV: a bucket-handle tear that extends up into the biceps tendon itself.

Types V to VII (Maffet): SLAP lesions combined with anterior instability (a Bankart extension), an unstable flap, or extension into the middle glenohumeral ligament. These describe the labrum tearing as part of a larger instability pattern rather than in isolation.

Who gets SLAP tears, and how

There are three broad mechanisms. The first is the peel-back mechanism described by Burkhart and Morgan in overhead throwing athletes: in the late-cocking position of abduction and maximal external rotation, a torsional force twists the base of the biceps and peels the posterosuperior labrum off the glenoid. This is the classic cause of type II tears in throwers and the reason rehabilitation and surgical protocols deliberately restrict external rotation early on.

The second is compression or traction trauma: a fall onto an outstretched hand, a sudden traction on the arm, or a direct blow. The third is repetitive overhead load without a single injury, which is common in swimmers, throwers, and manual workers and often coexists with a glenohumeral internal rotation deficit (GIRD) and tight posterior capsule.

Age matters in a way that is easy to miss. Superior labral changes are read on MRI in a large share of people who have no shoulder symptoms at all, and the rate climbs steeply with age. In one study of asymptomatic adults aged 45 to 60, radiologists reported superior labral tears in well over half of shoulders, and the authors concluded these may simply be normal age-related findings. Imaging-based prevalence rises further beyond 65. The practical message is that finding a superior labral tear on a scan does not establish that it is the cause of the pain.

Symptoms and history clues

The typical complaint is a deep, vague shoulder pain that the patient struggles to point to, often felt at the back or deep inside the joint rather than at a single spot. Mechanical symptoms are common: painful clicking, catching, popping, or a sense that something moves inside the shoulder, particularly with overhead activity.

In overhead athletes the story is more specific. A thrower may describe a loss of velocity or control, pain in the late-cocking phase, or the so-called dead arm, where the arm feels heavy and powerless after throwing. A traumatic onset (a fall onto an outstretched hand, a dislocation, or a sudden traction) points toward a discrete labral injury rather than gradual wear.

None of these features is specific on its own. Biceps and labral pathology, rotator cuff disease, internal impingement, and instability all overlap, which is exactly why the examination relies on combining tests rather than trusting any single one.

The SLAP special tests, and what they really show

More than ten clinical tests have been described for SLAP lesions. The honest summary from the systematic reviews is consistent: the tests that introduced each manoeuvre report excellent numbers, independent studies report far weaker ones, and no single test is accurate enough to rule a SLAP tear in or out on its own. Use them as a cluster, and weight a positive only when it reproduces the patient's familiar deep shoulder symptom.

In this sectionO'Brien active compression testBiceps load II testDynamic labral shear and crank testsSpeed's and Yergason's tests

O'Brien active compression test

With the shoulder flexed to 90 degrees, the elbow extended, and the arm adducted about 10 to 15 degrees across the midline, the patient resists a downward force first with the thumb pointing down (pronated) and then with the palm up (supinated). Deep pain in the thumb-down position that reduces in the palm-up position suggests a labral source; pain felt over the top of the shoulder at the acromioclavicular joint points to the AC joint instead.

The original 1998 description reported near-perfect accuracy, but later independent work found much weaker performance, with pooled sensitivity and specificity ranging widely and the likelihood ratios losing statistical significance. Treat it as a useful screening component, not a stand-alone rule-in test. The PhysioHub O'Brien test page has the demonstration and the full study data.

Biceps load II test

With the patient supine, the arm is abducted to 120 degrees and externally rotated with the elbow flexed and forearm supinated; the patient then flexes the elbow against resistance. Pain that appears or worsens with the resisted elbow flexion is positive. The test loads the biceps anchor directly, which is the rationale for its use in SLAP.

Kim and colleagues reported high sensitivity and specificity in the population that developed the test, but independent evaluation found a much more modest likelihood ratio. It remains one of the more biceps-specific provocations and a reasonable cluster member. See the biceps load II page for the procedure and references.

Dynamic labral shear and crank tests

The dynamic labral shear (modified O'Driscoll) test takes the abducted, externally rotated arm through a range while applying a shear load to the labrum; a reproduction of pain or a painful click in the mid-range is positive. The crank test compresses and rotates the loaded glenohumeral joint to provoke a labral click or pain.

Both follow the same pattern as the rest of the SLAP tests. The crank test reported sensitivity and specificity around 90 percent in its original study, and the dynamic labral shear reported very high specificity in its developer paper, but pooled and independent data are weaker and the confidence intervals often cross the threshold of usefulness. They add information to a cluster; they do not settle the diagnosis.

Speed's and Yergason's tests

Speed's test (resisted forward flexion with the elbow extended and forearm supinated) and Yergason's test (resisted supination and external rotation with the elbow at 90 degrees) are primarily biceps and bicipital groove tests rather than pure SLAP tests. They are most useful when bicipital groove pain or biceps instability is part of the picture.

Their accuracy for SLAP specifically is limited: Speed's has low sensitivity and modest specificity, and Yergason's is reasonably specific but insensitive. In pooled analysis Yergason's was one of the few shoulder tests whose positive likelihood ratio reached statistical significance, which is a low bar but worth knowing.

Test	Sens.	Spec.	LR (+)	Source
O'Brien (developer)	~100%	98.5%	~67	O'Brien 1998
O'Brien (independent/pooled)	47-78%	11-73%	~1.1 ns	Meserve 2009
Crank (developer)	91%	93%	~13.6	Liu 1996 / Dessaur 2008
Crank (pooled)	13-58%	56-83%	~1.5 ns	Meserve 2009
Biceps load II (developer)	90%	97%	High	Kim 2001
Biceps load II (independent)	NA	NA	~1.7	Cook 2012
Dynamic labral shear (developer)	72%	98%	~32	Kibler 2009
Compression-rotation (pooled)	NA	NA	~2.8	Hegedus 2012
Speed's	32%	75%	~1.3	Hegedus 2012
Yergason's	43%	79-95%	~2.0-2.3	Hegedus 2012
Anterior slide	5-10%	82-93%	Low	Meserve 2009

Diagnostic accuracy of the main SLAP tests. Two layers of evidence exist and should never be conflated: the developer studies that introduced each test (optimistic) and the independent or pooled data (much weaker). 'ns' marks a likelihood ratio whose confidence interval crosses 1, meaning it does not meaningfully change probability. No single test is accurate enough to rule a SLAP tear in or out alone.

Putting it together: the diagnostic reality

Because every individual test is moderate at best, the defensible approach is a cluster decision. Combine the history (mechanism, mechanical symptoms, overhead sport, loss of throwing performance), at least two provocative tests that reproduce the familiar symptom, and a deliberate effort to rule out the conditions that mimic SLAP: rotator cuff disease, internal impingement, instability, and AC joint pain. PhysioHub bundles the tests into defined SLAP clusters so you can see how combining them changes the post-test probability.

Imaging has its own trap. Magnetic resonance arthrography is the usual reference standard short of arthroscopy, but the high rate of superior labral changes in pain-free shoulders, rising sharply with age, means a positive scan must always be interpreted against the clinical picture. A labral tear reported on MRI in a 55-year-old with vague aching is more likely an incidental age finding than the pain generator. Arthroscopy remains the definitive look, but it is a treatment decision, not a screening tool.

Treatment: rehabilitation first, surgery selectively

For most isolated SLAP tears, structured rehabilitation is the appropriate first line, and a large share of patients do well without surgery. Surgery is reserved for the right lesion in the right patient after conservative care has had a fair trial.

In this sectionConservative managementSurgical options

Conservative management

Rehabilitation targets the drivers, not the tear itself. The core elements are restoring posterior shoulder flexibility and correcting glenohumeral internal rotation deficit (sleeper and cross-body stretches), re-establishing scapular control, and strengthening the rotator cuff and periscapular muscles. Throwers are progressed through a graded return-to-throwing program once range, control, and strength are restored.

Outcomes are reasonable. Reviews report that a majority of patients with isolated SLAP tears improve with non-operative care, and return-to-play after rehabilitation is roughly fifty-fifty overall but considerably higher, around three-quarters, among athletes who complete the full program. Older age, an overhead sport, a traumatic mechanism, and a coexisting rotator cuff tear all lower the odds of success without surgery.

Surgical options

When surgery is indicated, the two main options are SLAP repair (reattaching the labrum and biceps anchor with suture anchors) and biceps tenodesis or tenotomy (detaching the biceps from the labrum and, for tenodesis, reattaching it lower down). The choice is strongly age-dependent.

In older patients, SLAP repair tends to produce stiffness, persistent pain, and a higher revision rate, so surgeons increasingly prefer biceps tenodesis or tenotomy. A systematic review comparing the two found tenodesis gave higher rates of return to pre-injury sport, higher satisfaction, and a lower reoperation rate, with similar functional scores. In young throwers the calculus differs, because the long head of biceps contributes to dynamic stability, so routine tenodesis is generally avoided and repair is favoured for a genuine unstable type II lesion.

For patients: I think I have a SLAP tear, what should I do?

If you are a patient rather than a clinician, this is the plain-language version. The tests above are designed for a trained examiner, not for self-diagnosis, but a few patterns are worth understanding.

What it can feel like: a deep, hard-to-pinpoint ache inside the shoulder, often with painful clicking, catching, or popping, and pain with overhead movements. If you throw or play an overhead sport, you might notice the shoulder feels weak or that you have lost speed or accuracy, sometimes called a dead arm.

The honest truth about home tests: there is no reliable way to test yourself for a SLAP tear. Even the in-clinic tests are individually unreliable, the impressive numbers from the original studies do not hold up when other researchers repeat them, and a confident diagnosis usually needs a clinical examination plus an MRI scan with contrast, and sometimes keyhole surgery to look directly.

Why a scan is not the whole story: superior labral changes show up on MRI in a very large proportion of people who have no pain at all, and this becomes more common with age. That means a tear seen on your scan may be a normal age-related finding rather than the cause of your pain. A good clinician interprets the scan alongside your symptoms, not instead of them.

What to do first: most people start with physiotherapy, not surgery, and a large share improve without an operation. Rehabilitation focuses on loosening the back of the shoulder, improving the control of the shoulder blade, and strengthening the rotator cuff. Give it a fair trial of several weeks to months before considering surgery.

What to avoid: pushing through sharp catching pain, and aggressively forcing the arm into the fully cocked, externally rotated throwing position early on, which is the exact position that stresses the tear. If you are recovering from a repair, your surgeon will restrict that position deliberately.

Common questions

Real questions students and clinicians ask.

What is a SLAP tear in simple terms?: AA SLAP tear is an injury to the top (superior) part of the ring of cartilage around the shoulder socket, the labrum, running from front to back (anterior to posterior). It sits where the biceps tendon anchors to the socket, so it can cause deep shoulder pain, clicking, and, in throwers, a loss of power. Most clinically important tears are Snyder type II, where the labrum and biceps anchor detach from the bone.
Is the O'Brien test accurate for a SLAP tear?: ANot on its own. The 1998 study that introduced the O'Brien active compression test reported near-perfect accuracy, but independent studies found much weaker performance, with the positive likelihood ratio losing statistical significance in pooled analysis. It is a reasonable screening test and a useful part of a cluster, but it cannot confirm or exclude a SLAP tear by itself, and pain it provokes over the AC joint should be interpreted as AC joint pain rather than a labral tear.
Which SLAP test is the most reliable?: AThere is no single reliable SLAP test. Developer studies for the crank, biceps load II, and dynamic labral shear tests report high numbers, but independent and pooled data are consistently weaker and the confidence intervals often cross the threshold of usefulness. The defensible approach is to combine the history with at least two provocative tests that reproduce the patient's familiar deep shoulder symptom, and to rule out cuff, instability, and AC joint pathology.
Can a SLAP tear heal without surgery?: AMany isolated SLAP tears are managed successfully without surgery. Rehabilitation that restores posterior shoulder flexibility, corrects glenohumeral internal rotation deficit, improves scapular control, and strengthens the rotator cuff helps a majority of patients. Return to sport after rehabilitation is roughly fifty-fifty overall and higher among those who complete the full program. Surgery is reserved for lesions that fail a fair trial of conservative care, with the choice between repair and biceps tenodesis depending heavily on age.
Why do so many people have a SLAP tear on MRI but no pain?: ASuperior labral changes are common age-related findings. In studies of pain-free adults in their late forties to sixties, radiologists reported superior labral tears in more than half of shoulders, and the rate rises further with age. This is why a labral tear on a scan must always be interpreted alongside symptoms. A positive MRI does not prove that the labrum is the source of the pain.
What is the difference between a SLAP repair and a biceps tenodesis?: AA SLAP repair reattaches the torn superior labrum and biceps anchor to the bone with suture anchors. A biceps tenodesis detaches the biceps from the labrum and fixes it lower on the humerus, removing the painful pull on the labral anchor. In older patients, SLAP repair tends to cause stiffness and a higher revision rate, so tenodesis is often preferred and has shown higher return-to-sport and satisfaction rates with fewer reoperations. In young throwers the biceps contributes to stability, so repair is usually favoured over routine tenodesis.

SLAP Tears:A Physiotherapist's Clinical Guide