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1. SLAP Tears Eric L. Chehab, MD
January 20, 2010
5. SLAP Tears Snyder 1990 coined the term “SLAP”
Superior labrum anterior and posterior
27 lesions in 700 shoulder arthroscopies (3.9%)
MOI: Compression onto outstretched arm
Symptoms: Pain, overhead pain, catching/popping
Divided into 4 types (most common classification used today)
6. Type I
7. Type II
8. Type III
9. Type IV
11. Labrum Anatomy Fibrocartilage
Blood supply
Shape
12. Labrum Anatomy
13. Labrum Anatomy
14. Labrum Anatomy
16. Labrum Anatomy
17. Labrum Anatomy Like the meniscus, the blood supply to the labrum dictates treatment
High variability in the normal anatomy can make pathologic conditions in the labrum more difficult to identify
18. Labrum Function
19. Labrum Function
20. Labrum Function
21. Labrum Function
22. Labrum Function Increases concavity and compression
Stabilizes shoulder anterior-posteriorly and superiorly/inferiorly
Improves rigidity of the shoulder in the cocked, throwing position (ie loads the gun)
23. Mechanism of Injury Baseball, javelin, football, tennis, softball
Tremendous force with late cocking, deceleration phase of throwing
Repetitive micro trauma
Fall with direct compression on forward flexed arm
24. Mechanism of Injury Predisposing factors
Peel – back
Capsular contracture (essential lesion)
Internal impingement
Increased glenoid retroversion
25. Schematic and graphical representations of the humeral shift from neutral to maximum external rotation, showing the superior shift of the humeral head following the simulated posterior capsular contracture.Schematic and graphical representations of the humeral shift from neutral to maximum external rotation, showing the superior shift of the humeral head following the simulated posterior capsular contracture.
26. Mechanism of Injury Native shoulder – head shifts posteroinferiorly in late cocking phase
With posterior contracture & anterior laxity from repetitive throwing, head shifts posterosuperiorly. This loads the labrum while under excess tension with increased ER. Labrum peels back and separates from glenoid rim attritionally.
27. Clinical Presentation Difficult
Pain universal – but variable in type
History of injury – traction injury w. unexpected shift of heavy objects; fall from a height; repetitive microtrauma
Mechanical symptoms
Dead Arm
28. Clinical Presentation PE:
Several diagnostic maneuvers suggest a SLAP, but no single exam finding is diagnostic of a SLAP tear
29. Clinical Presentation Speed’s test
Yergason’s
Anterior Apprehension
Relocation Test
Compression-Rotation Test
O’Brien’s Active Compression Test
Kibler Test
Whipple Test
Biceps Load Test
Bicepital Groove Tenderness
37. Clinical Presentation Diagnosis based on history and physical exam
A combination of exam maneuvers can increase diagnostic accuracy of SLAP lesions.
38. MRI
39. Treatment Nonsurgical Treatment
Improve posterior capsular flexibility
Cuff Strength
Scapular mechanics
3 months of conservative treatment
40. Surgical Treatment
43. Results Suture Anchor Technique
Pain relief and function reliable after SLAP repair, but return to sport is less variable
Morgan et al 97% good to excellent; 84 % RTS (102 repairs)
Kim et al 94% good to excellent; preinjury level of function 91%; only 22% RTS
Ide et al. 90 % good to excellent, 75% RTS
44. Results AOSSM Meeting Keystone 2009
23 Elite Pitchers (collegiate/pro) underwent Type II SLAP repair
At 38 months postop; 13 playing pain free (57%); 6 playing with pain (26%); 4 not playing (17%)
Good to excellent results in 96%
45. Results Operative treatment of SLAP results in between 57% to 84% RTS at preinjury level of function.
However, good to excellent results can be expected with most non-overhead activity
46. Thank You