Sports MedicineShoulderSurgery Center

SLAP Repair

Performed by Drs. Raffo and Christoforetti, fellowship-trained shoulder surgeons who carefully distinguish between patients who benefit from SLAP repair versus biceps tenodesis, particularly in older or non-throwing patients.

Duration: 45–75 minutesAnesthesia: General with nerve block

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What is slap repair?

SLAP repair is an arthroscopic surgery that reattaches a torn superior labrum — the cartilage rim at the top of the shoulder socket — back to the glenoid bone using small suture anchors. It relieves pain in overhead athletes and patients with traumatic labral injuries. Recovery takes 4–6 months.

Why this approach — at MOS

Patient selection is the most important variable in SLAP repair outcomes. The literature on SLAP repair is mixed in older patients because surgeons historically applied repair to a population — patients over 35, non-throwers — for whom tenodesis is the better option. We are selective: SLAP repair is our preference for young competitive overhead athletes with traumatic or peel-back positive SLAP tears. For everyone else, biceps tenodesis provides more predictable outcomes with lower rates of stiffness and re-operation.

At surgery, we confirm the tear instability under anesthesia (peel-back sign, traction testing) before committing to repair. If the tissue quality is poor or the labrum is insufficient to hold anchors reliably, we will convert to tenodesis at the same sitting rather than perform a suboptimal repair. This decision is communicated to patients before surgery as part of our informed consent.

Who is a candidate?

Indications

Type II SLAP tear confirmed on MRI with contrast (MR arthrogram) in an overhead athlete under 35
Traumatic SLAP tear from acute injury (fall, traction event) with significant symptoms
Failed conservative management over 3–6 months in a symptomatic patient with confirmed SLAP tear
Throwing athletes with pain specifically in the late cocking or deceleration phase

Contraindications

Patient age over 35–40 (biceps tenodesis generally preferred over labral repair)
Non-throwers with isolated SLAP tears (tenodesis preferred for more reliable outcomes)
Active shoulder infection
Severe glenohumeral arthritis
Type I SLAP tears (fraying only, no instability — treated with debridement rather than repair)

Conservative Treatment First

Most SLAP tears in recreational athletes and non-throwers respond reasonably well to non-operative treatment. Physical therapy directed at posterior shoulder tightness, scapular strengthening, and rotator cuff balanced strengthening can reduce symptoms in many patients over 3–6 months. Posterior shoulder stretching (sleeper stretch, cross-body stretch) addresses the posterior capsular contracture that is frequently associated with SLAP pathology in throwers.

Corticosteroid injection into the glenohumeral joint can reduce acute inflammation and allow patients to engage in physical therapy more comfortably. If symptoms persist after a dedicated non-operative trial, surgery becomes appropriate. In professional or competitive overhead athletes with confirmed Type II SLAP tears and symptoms that prevent throwing, earlier surgical planning may be warranted given the season-specific demands.

Patients in the Germantown and broader Montgomery County area can be evaluated by our fellowship-trained surgeons, who will carefully assess which patients are best served by repair versus tenodesis versus continued non-operative management.

The procedure

What Is SLAP Repair?

SLAP stands for Superior Labrum Anterior to Posterior. The SLAP complex includes the superior labrum and the anchor of the long head of the biceps tendon, which inserts at the top of the glenoid. Type II SLAP tears — where the labrum and biceps anchor peel off the glenoid bone — are the most clinically significant and the most commonly repaired.

In overhead athletes such as baseball pitchers, the SLAP complex is subjected to extreme tension during the late cocking and deceleration phases of throwing. Over time or from a single traumatic event (falling on an outstretched arm, sudden traction injury), the labrum can peel off its glenoid attachment. This produces deep shoulder pain, a painful "catch" or "click" inside the joint, and often pain specifically with overhead activity.

SLAP repair reattaches the labrum to the glenoid in its anatomic position. However, the decision between SLAP repair and biceps tenodesis (cutting the biceps tendon from its torn attachment and reattaching it lower on the humerus) is nuanced and depends heavily on patient age and activity demands. In patients over 35–40, or those who are not overhead throwers, biceps tenodesis typically produces better outcomes than SLAP repair, as the repaired labrum in older patients heals less reliably and stiffness is more common.

What Happens During SLAP Repair?

You arrive at the ambulatory surgery center approximately 90 minutes before surgery. An interscalene nerve block is placed, followed by general anesthesia. You are positioned in the beach chair or lateral decubitus position.

The arthroscope is inserted and the superior labrum is inspected from the posterior portal. A probe is used to assess labral stability — the peel-back test and other dynamic assessments confirm tear instability. The labral base and superior glenoid are débrided and the bone surface is freshened to promote healing.

One or two knotless suture anchors are placed into the superior glenoid, posterior to the biceps anchor. Sutures are passed around the labrum using a suture passing device. When tensioned, the sutures pull the labrum securely back to the bone. The repair is assessed arthroscopically to confirm anatomic reduction and stability.

The joint is inspected for associated pathology (rotator cuff, biceps tendon, other labral tears). Portals are closed and the arm is placed in a sling.

Recovery timeline

Days 0–14

Arm in sling. No shoulder motion other than pendulums at week 1. Elbow, wrist, and hand exercises.

Weeks 2–6

Physical therapy begins passive and active-assisted forward elevation. No resisted biceps or overhead activity.

Weeks 6–12

Active motion advances. Strengthening of rotator cuff and periscapular muscles begins.

Months 3–4

Sport-specific conditioning. Throwing athletes begin an interval throwing program at 4–5 months.

Months 5–6

Return to full overhead activity and sport. Return to full competitive throwing at 6–9 months for pitchers.

The biceps anchor heals to bone on a biological timeline that takes 3 months minimum. No pulling, curling, or resisted biceps activities during this period. Stiffness is the most common post-operative complaint — early passive motion and compliance with the physical therapy protocol are the best defenses. Return to competitive pitching typically requires 9–12 months from surgery.

Frequently Asked Questions

How is a SLAP tear diagnosed?

A SLAP tear is diagnosed on MRI, ideally with intra-articular gadolinium contrast (MR arthrogram), which improves sensitivity for labral pathology. Physical examination findings — the active compression test, O'Brien test, and peel-back sign — support the diagnosis. Arthroscopy is the definitive diagnostic method, as many MRI-reported SLAP tears are not clinically significant.

Who is a better candidate for SLAP repair versus biceps tenodesis?

Younger overhead athletes (under 35) with traumatic or activity-related SLAP tears are the best candidates for repair. Patients over 35, non-throwing athletes, and those with associated biceps tendon degeneration typically have better outcomes with biceps tenodesis. Your surgeon will discuss which procedure is appropriate based on your age, sport, and tear characteristics.

Can a SLAP tear heal without surgery?

Type I SLAP tears (fraying without instability) frequently improve with conservative care. Type II tears (complete detachment of the biceps anchor) rarely heal fully without surgery, as the torn tissue cannot re-establish a bone-to-tissue connection through exercise alone. However, many patients with Type II tears, particularly those over 40, can function well with conservative management if symptoms are manageable.

What is the success rate of SLAP repair?

In carefully selected young overhead athletes, SLAP repair returns approximately 70–80% of patients to their pre-injury level of throwing. Outcomes are significantly less predictable in older patients and non-throwers — which is why biceps tenodesis is preferred in those groups.

Will I have full shoulder motion after SLAP repair?

Most patients regain full or near-full range of motion, though some stiffness is common in the first 3–4 months. External rotation is typically preserved. Full overhead motion usually returns by 3–4 months for non-throwers; throwing mechanics may take longer to normalize.