A SLAP tear (Superior Labrum Anterior to Posterior) is a specific type of labral tear involving the top portion of the labrum — from the front to the back — at the point where the long head of the biceps tendon attaches to the shoulder socket. SLAP tears are a significant source of deep shoulder pain, particularly in overhead athletes.
SLAP tears frequently occur alongside other shoulder injuries — a shoulder dislocation can simultaneously damage the anterior labrum, causing a Bankart lesion, and concurrent biceps tendon pathology is common enough that surgeons routinely evaluate the biceps anchor at the time of any labral repair.
Causes
Repetitive overhead activity.
Repeated throwing motions, swimming strokes, and overhead racquet sports place cyclic traction and shear forces on the superior labrum and biceps anchor. Over time, this repetitive stress leads to progressive fraying and eventual tearing — the most common mechanism in younger athletes such as baseball pitchers and volleyball players.
Acute injury.
A SLAP tear can also occur from a single traumatic event, such as a fall onto an outstretched arm, a sudden pull or traction on the arm, or a shoulder dislocation. A compressive force driving the humeral head upward into the superior labrum during a fall is another recognized mechanism.
Symptoms
Patients often describe a deep, poorly localized ache within the shoulder that is difficult to pinpoint. Pain typically worsens with overhead activities, throwing, or reaching across the body. A catching, clicking, or locking sensation with arm motion is common. Overhead athletes may notice a decrease in throwing velocity or difficulty generating power through the late cocking and acceleration phases of the throwing motion.
Diagnosis
A physical exam by a doctor may include the O'Brien active compression test, the anterior slide test, the biceps load test, and the compression rotation test, though no single test is definitively reliable in isolation. An MRI arthrogram (MRI with intra-articular contrast) is the imaging study of choice for SLAP tears, offering superior sensitivity for identifying superior labral pathology, extent of the tear, and involvement of the biceps anchor compared to standard MRI. MRI also evaluates the rotator cuff and surrounding structures simultaneously, which is important since rotator cuff tears and SLAP lesions frequently coexist — particularly in older overhead athletes.
Tear classification (Snyder)
Doctors classify SLAP tears based on the pattern and extent of the tear.
- Type I: Degenerative fraying of the superior labrum without detachment. The biceps anchor is intact.
- Type II: Detachment of the superior labrum and biceps anchor from the glenoid. The most common and clinically significant type.
- Type III: Bucket-handle tear of the superior labrum with an intact biceps anchor. The torn fragment displaces into the joint.
- Type IV: Bucket-handle tear extending into the biceps tendon itself.
Treatments
Treatment depends on the type of SLAP tear, severity of symptoms, patient age, and activity level.
After the initial injury, rest, ice, activity modification, and anti-inflammatory medications are recommended.
Type I tears and low-grade Type II tears: Physical therapy focusing on posterior capsule stretching and rotator cuff strengthening, along with anti-inflammatory medications and activity modification, often provides good results without surgery.
Significant Type II tear in young and active patients
Surgery is often advised for young or active patients — particularly overhead athletes — with Type II tears causing persistent symptoms. Arthroscopic repair uses suture anchors to reattach the labrum and biceps anchor to the glenoid. After surgery, a thorough physical therapy regiment is critical to healing and recovering function.
Significant Type II tear in older, nonathletic patients
Older patients or those with concurrent biceps pathology often benefit from a biceps tenodesis rather than labral repair. The long head of the biceps tendon is detached from the labrum and reattached to the humerus, relieving symptoms while avoiding the prolonged recovery of a SLAP repair.
Type III and Type IV tears
These tears are treated with arthroscopic debridement, repair, or biceps tenodesis depending on the extent of biceps involvement and patient factors.
Get an MRI to Confirm Your Diagnosis
Before surgical planning or starting treatment, a clear MRI diagnosis ensures the right path forward. First Look MRI offers self-pay Shoulder MRI scans — no doctor's order or insurance required — at our locations in Georgia, Texas, and Colorado.