SLAP TEARS
Superior Labrum Anterior to Posterior | Biceps Anchor | Type II Critical
SLAP CLASSIFICATION (Snyder)
Critical Must-Knows
- Type II is the CLINICALLY SIGNIFICANT SLAP tear - biceps anchor is detached
- O-Brien test and Speed test are key provocative tests
- Overhead athletes (throwers) are high-risk population
- SLAP repair outcomes declining in literature - tenotomy/tenodesis rising
- Age over 40: consider biceps tenotomy/tenodesis over SLAP repair
Examiner's Pearls
- "MR arthrography is gold standard for SLAP diagnosis
- "Peel-back test: arthroscopic confirmation (ABER position)
- "High failure rate of SLAP repair in throwing athletes
- "Type II can be subdivided: anterior, posterior, combined
Clinical Imaging
Imaging Gallery




Critical Exam Concepts
Type II is KEY
Type II SLAP = biceps anchor detached. This is the clinically significant lesion. Types I and III can be debrided. Type IV involves biceps tendon itself.
Overhead Athletes
Throwers have posterosuperior SLAP tears from peel-back mechanism in late cocking. Often associated with GIRD (glenohumeral internal rotation deficit) and posterior capsular tightness.
SLAP Repair Declining
Recent literature shows high failure rates of SLAP repair, especially in patients over 40. Trend toward biceps tenotomy or tenodesis with comparable outcomes and faster recovery.
Age Matters
Under 40: Consider SLAP repair in motivated patient. Over 40: Biceps tenotomy or tenodesis preferred. Degenerative labral changes common over 40.
Quick Decision Guide
| SLAP Type | Pathology | Treatment | Role of Biceps |
|---|---|---|---|
| Type I | Degenerative fraying | Debridement only | Anchor intact - leave |
| Type II | Biceps anchor detached | Repair or biceps procedure | Anchor must be addressed |
| Type III | Bucket handle tears | Excise bucket handle | Anchor intact - leave |
| Type IV | Bucket handle into biceps | Excise +/- repair or tenotomy | Biceps tendon involvement |
| Type V-X | Combined lesions | Address each component | Variable - case dependent |
FBBBSLAP Classification
Memory Hook:FBBB - Know Type II (Biceps anchor) is the KEY clinical SLAP!
SOAPSLAP Clinical Tests
Memory Hook:SOAP up the shoulder tests for SLAP diagnosis!
AGESLAP Repair vs Biceps Procedure Decision
Memory Hook:AGE guides SLAP repair vs biceps procedure decision!
Overview and Epidemiology
Declining SLAP Repair Rates
SLAP repairs peaked then declined in the 2000s-2010s as studies showed high failure rates, especially in patients over 40 and throwers. Trend now toward biceps tenotomy or tenodesis which provides reliable pain relief with faster recovery.
Epidemiology
- Originally described in 1990 (Snyder)
- Peak age 26-50 years
- Male greater than female
- Overhead athletes overrepresented
- Increasing diagnosis with MRI/arthroscopy
Mechanism
- Compression: Fall on outstretched hand, arm forward and abducted
- Traction: Sudden pulling force on arm
- Peelback: Throwing motion (late cocking) in throwers
- Degenerative: Age-related in Type I
- Repetitive overhead: Cumulative microtrauma
Pathophysiology and Mechanisms
Superior Labral Anatomy
Location: 10 o-clock to 2 o-clock position on glenoid.
Biceps anchor: LHB tendon inserts at supraglenoid tubercle, blending with superior labrum.
Meniscoid appearance: Less firmly attached than anterior labrum - may appear loose on arthroscopy.
Blood supply: Relatively avascular zone (10-12 o-clock) - limits healing.
Distinguish SLAP from Normal Variants
Sublabral foramen (absent anterosuperior labrum) and Buford complex (cord-like MGHL) are normal variants that should NOT be repaired. True SLAP tears show: fraying, instability of biceps anchor, extension toward biceps, and positive peel-back test.
Classification Systems
Original Snyder Classification (Types I-IV)
| Type | Pathology | Treatment | Key Point |
|---|---|---|---|
| I | Fraying of superior labrum | Debridement | Anchor intact - no repair |
| II | Biceps anchor detached from glenoid | Repair or biceps procedure | MOST IMPORTANT clinically |
| III | Bucket handle tear of labrum | Excise bucket handle | Anchor intact - preserve it |
| IV | Bucket handle extending into LHB | Excise +/- repair/tenotomy | Biceps tendon split |
Clinical Assessment
History
- Mechanism: Compression, traction, throwing
- Pain: Anterior/deep shoulder, with overhead activity
- Clicking/popping: Common complaint
- Sport level: Overhead athlete critical
- Weakness: May report with overhead activity
Examination
- O-Brien test: Pain with forward flex/adduct/IR, relieved with ER
- Speed test: Resisted forward flexion
- Anterior slide: Hand on hip, force applied
- Biceps load test: ABER with biceps contraction
- GIRD: Check internal rotation deficit
O-Brien Test (Active Compression Test)
Arm at 90° forward flexion, 10-15° adduction, thumb down (IR). Resist downward pressure. Then repeat with palm up (ER). Positive: Pain with IR, relieved with ER. Most commonly used clinical test for SLAP.
Key Examination Findings
Overhead athletes: Check for GIRD (internal rotation deficit greater than 20° compared to opposite side), posterior capsular tightness, scapular dyskinesis.
Combined pathology: SLAP tears often associated with rotator cuff pathology - assess thoroughly.
Investigations
MR Arthrography (Gold Standard)
Sensitivity: 82-98% for Type II SLAP.
Technique: Intra-articular gadolinium increases labral visualization.
Key findings: Contrast extension between labrum and glenoid at superior labrum.
ABER sequence: Increases sensitivity for peel-back lesions.
Superior to standard MRI for labral pathology.
Peel-Back Test
Arthroscopic ABER positioning: With arm in abduction and external rotation (throwing position), the biceps vector becomes vertical and peels the posterosuperior labrum off the glenoid. Positive peel-back = Type II SLAP (especially IIB in throwers).
Management Algorithm

SLAP Type-Based Treatment
Decision Pathway
Degenerative fraying. Anchor intact. Simple debridement of frayed tissue. No repair needed.
Biceps anchor detached. Options: SLAP repair (under 40, motivated), biceps tenotomy (over 40, low demand), or tenodesis (over 40, active).
Bucket handle tear. Anchor intact. Excise the displaced bucket handle fragment. Preserve the anchor.
Bucket handle into biceps. If less than 30% biceps involvement: excise bucket handle. If greater than 30%: biceps tenotomy or tenodesis.
Surgical Technique
Arthroscopic SLAP Repair
Surgical Steps
Confirm SLAP classification. Perform peel-back test. Assess biceps tendon quality.
Debride frayed tissue. Decorticate glenoid rim to bleeding bone. Mobilize the labrum.
1-3 suture anchors at superior glenoid rim. Place at 10-11 o-clock and 12-1 o-clock. Avoid suprascapular nerve on superior anchor.
Pass sutures through labrum. Tie to restore labral bumper and biceps anchor stability.
Anchor Positioning
Avoid placing anchors too posterior (risk suprascapular nerve at spinoglenoid notch) or too medial on glenoid neck (inadequate purchase). Anchors should be on the glenoid rim at the articular margin.
Complications
| Complication | Procedure | Incidence | Management |
|---|---|---|---|
| Stiffness | SLAP repair | Common | Aggressive PT, avoid in throwers |
| Failure/recurrence | SLAP repair | 20-40% | Revision or biceps procedure |
| Popeye deformity | Tenotomy | 30-70% | Cosmetic - counsel preop |
| Nerve injury | Repair | Rare | Avoid superior/posterior anchor |
| Persistent pain | Any | Variable | Address all pathology, consider revision |
SLAP Repair Failure in Throwers
Overhead throwing athletes have 33-64% failure rate after SLAP repair in some studies. The peel-back forces during throwing stress the repair. Many surgeons now recommend biceps tenotomy/tenodesis for throwers with Type II SLAP.
Postoperative Care
Rehabilitation Protocol (SLAP Repair)
Sling immobilization. Elbow/hand exercises. Gentle pendulums only. No active biceps.
Wean sling. Passive to active-assisted ROM. Avoid ABER position. No resisted biceps.
Full AROM. Isometric cuff strengthening. Begin light biceps activity.
Progressive resistance. Sport-specific training. No throwing until 6 months minimum.
Tenotomy/Tenodesis Recovery
Biceps procedures have faster recovery. Tenotomy: sling 1-2 weeks, no restrictions by 6 weeks. Tenodesis: protect biceps 6 weeks, no heavy biceps loading 3 months. Both return to full activity faster than SLAP repair.
Outcomes and Prognosis
Procedure-Specific Outcomes
SLAP Repair: 60-80% good outcomes overall. Higher failure rate in throwers (33-64%), patients over 40, and workers compensation. Stiffness is common concern.
Biceps Tenotomy: 85-95% pain relief. Popeye deformity in 30-70%. Minimal strength loss for daily activities.
Biceps Tenodesis: Similar pain relief to tenotomy. Lower cosmetic deformity rate. Preferred in younger/active/cosmetically concerned patients.
Return to Sport
SLAP repair: 6-9 months for non-throwing sports. Throwing athletes may take 9-12 months with variable return to prior level.
Biceps procedures: Often faster return (3-4 months).
Evidence Base and Key Studies
SLAP Repair Declining Outcomes
- Database study of SLAP repairs 2004-2014
- Peak in 2008 then declining numbers
- Shift toward biceps tenodesis
- Reflects disappointing clinical outcomes of repair
SLAP Repair in Throwers
- Systematic review of SLAP repair in overhead athletes
- 63% return to preinjury level
- 37% failure/did not return to sport
- Posterior capsular tightness associated with failure
Tenotomy vs Tenodesis
- Meta-analysis comparing tenotomy and tenodesis
- Similar pain relief (greater than 85% both)
- Tenotomy: 43% Popeye deformity
- Tenodesis: 8% Popeye deformity
Age and SLAP Outcomes
- Multicenter study of SLAP repairs
- Age over 36: poorer outcomes
- 50% failure rate in patients over 40
- Associated pathology worsens outcomes
SLAP Classification Reliability
- Original description of SLAP lesions
- Types I-IV defined
- Type II most clinically significant
- Foundation for current classification
Exam Viva Scenarios
Practice these scenarios to excel in your viva examination
Scenario 1: Young Athlete with Shoulder Pain
"A 28-year-old recreational volleyball player presents with right shoulder pain during overhead serving. O-Brien test is positive. MR arthrography shows a Type II SLAP lesion with intact biceps tendon. How would you manage this?"
Scenario 2: Failed SLAP Repair
"A 35-year-old had SLAP repair 18 months ago but has persistent anterior shoulder pain with overhead activities. MRI shows the repair appears intact. What is your approach?"
Scenario 3: Throwing Athlete
"A 22-year-old elite baseball pitcher has posterior shoulder pain during the cocking phase of throwing. MR arthrography shows a posterosuperior Type IIB SLAP tear. Examination also reveals 25° GIRD. What is your treatment plan?"
MCQ Practice Points
Type II SLAP
Q: Which SLAP type is the most clinically significant? A: Type II - biceps anchor is detached from the glenoid. This requires surgical treatment (repair or biceps procedure). Types I and III can usually be debrided.
Type I Treatment
Q: How is a Type I SLAP treated? A: Debridement only. Type I is degenerative fraying with intact biceps anchor. No repair is needed - simply debride the frayed tissue.
Peel-Back Test
Q: What does a positive peel-back test indicate? A: Type II SLAP tear (especially Type IIB). In ABER position, the biceps vector becomes vertical and peels the posterosuperior labrum off the glenoid.
O-Brien Test
Q: How is the O-Brien test performed? A: Arm at 90° forward flexion, 10-15° adduction, thumb down (IR). Resist downward pressure. Repeat with palm up (ER). Positive: pain with IR, relieved with ER.
Sublabral Foramen
Q: What is the sublabral foramen? A: Normal anatomical variant - detachment of anterosuperior labrum at 1-3 o-clock position. Should NOT be repaired. Distinguished from SLAP by stable biceps anchor.
Age and SLAP Repair
Q: Why is SLAP repair less recommended in patients over 40? A: 50% failure rate in patients over 40. Degenerative labral/biceps changes reduce healing. Biceps tenotomy or tenodesis preferred for reliable pain relief.
Australian Context
Clinical Practice
- Arthroscopic SLAP repair available
- Trend toward biceps procedures increasing
- MR arthrography standard for diagnosis
- Sports medicine specialists manage overhead athletes
- Conservative management emphasized initially
Funding and Access
- MR arthrography accessible
- Rehabilitation readily available
- Wait times variable in public system
- Private covers most shoulder surgery
Orthopaedic Exam Relevance
SLAP tears are a common viva topic. Know the Snyder classification (especially Type II), clinical tests (O-Brien, peel-back), and the trend toward biceps tenotomy/tenodesis. Be prepared to discuss treatment in overhead athletes and why outcomes are variable.
SLAP TEARS
High-Yield Exam Summary
Classification (Snyder I-IV)
- •Type I: Fraying - debride only
- •Type II: Biceps anchor detached - MOST IMPORTANT
- •Type III: Bucket handle - excise, anchor intact
- •Type IV: Bucket into biceps - excise +/- tenotomy
Clinical Tests (SOAP)
- •Speed test: Resisted forward flexion
- •O-Brien test: Forward flex/adduct/IR vs ER
- •Anterior slide: Hand on hip, force applied
- •Peel-back: Arthroscopic ABER position
Type II Decision Factors
- •Under 40: Consider SLAP repair
- •Over 40: Biceps tenotomy or tenodesis
- •Throwing athlete: High failure rate - consider tenodesis
- •Degenerative biceps: Tenotomy or tenodesis
Imaging
- •MR arthrography: Gold standard
- •Look for contrast at labral-glenoid junction
- •ABER sequence increases sensitivity
- •Peel-back test confirms at arthroscopy
Outcomes
- •SLAP repair: 60-80% success overall
- •Throwers: 33-64% may fail
- •Tenotomy: 85-95% pain relief, Popeye 30-70%
- •Tenodesis: Similar relief, less cosmetic deformity
Normal Variants (Do NOT repair)
- •Sublabral foramen (1-3 o-clock)
- •Buford complex (cord-like MGHL)
- •Meniscoid labrum (loose attachment)
- •Distinguish by stable biceps anchor