current management of shoulder injuries in the overhead ...€¦ · current management of shoulder...
TRANSCRIPT
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Current Management of Shoulder Injuries in the Overhead Athlete
Joshua D. Nelson, MD, PharmD University of Kansas Medical Center
Department of Orthopaedic Surgery
Division of Sports Medicine
Team Physician Kansas City Chiefs
Team Physician Kansas City Royals
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Disclosures • Nothing to Disclose
• Patient videos, consent for educational use
• Smith and Nephew o Education Support, Arthroscopy Lab
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Anatomy
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Humeral Footprint
• Thickness of Footprint
o Supraspinatus Avg thickness 12-14
mm
o Infraspinatus Avg thickness 13-15 mm
o Subscapularis Avg thickness 17-19 mm
• Dugas et al 2002 JSES
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Rotator Cuff Tears • Rot cuff tear types
o Partial Thickness
• Articular sided (3x as common)
o Supraspinatus (usually non-throwing athlete, older)
o Infraspinatus (usually throwing athlete, younger)
• Internal Impingement
• Bursal sided
o Full thickness
• Intrinsic Factors
• Extrinsic Factors
• Traumatic
o Full thickness retracted (massive)
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Normal Cuff
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Partial Thickness Tear
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Full Thickness Tear
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Traumatic Cuff Tear
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Massive Cuff Tear
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• Partial Thickness
o Articular Side
• Internal Impingement
• Intrinsic Factors
o Bursal Side • Outlet Impingement
• Extrinsic Factors
• Full Thickness And/Or
Or
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Classification of Partial Thickness
• Ellman
o Location of tear
• Bursal
• Articular
• Intratendinous
o Depth of tear
• Grade I = <3mm (25%)
• Grade II = 3-6mm (25-50%)
• Grade III = >6mm (>50%)
• JBJS 2012 No evidence for 50% “Line in Sand”
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Why?
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1. Biomechanical Factors • Supraspinatus
o Articular side has half the strength of the bursal side • Nakijima et al 1994 JSES
• Articular sided bundles less organized, thinner
• Articular sided tears 3-5x more common than bursal
o Strain in the intact tendon fibers increases rapidly after 50% of tendon thickness lost • Yang et al 2009 JSES
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2. Intrinsic Factors • Vascularity
o Funakoshi AJSM 2010
• Contrast Enhanced Ultrasound showed a decrease in the articular side of the rotator cuff with increasing age, no difference on the bursal vascularity
o Rathbun CORR 1990
• Critical zone of hypovascularity near the insertion of the supraspinatus correlates with degeneration
• Increasing age, decreased blood supply correlates with articular sided tears o Sano et al 1999 JSES
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• Genetic Factors: Increased RR for 2nd and 3rd
generation relatives of patients with RCT under age
40
o Tashjian et al 2009 JBJS
• Acromion morphology usually normal in articular
sided PTRTC tears
o Ko et al 2006 JSES
o Ozak et al 1988 JBJS
2. Intrinsic Factors
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3. Extrinsic Factors • Trauma
o Dislocation
o Can result in partial
thickness or full thickness
tear
• Mechanical Compression
by coracoacromial arch
o Bursal sided tears
o Scapular Position
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Internal Impingement Seen in overhead athletes
- Infraspinatus and post/superior labral wear
What is it?
Why does it produce similar pathology?
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Evolution of Internal Impingement Etiology
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1985 • 1985 Andrews
o “Large eccentric traction force on the
supraspinatus and infraspinatus during throwing
motion”
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1995 • Davidson et al 1995 JSES
o Minor instability and fatigue of the dynamic stabilizers
causes anterior subluxation and secondary impingement
and repetitive microtrauma
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2003
• Burkhart, Morgan, Kibler 2003 Arthroscopy
o An altered posterosuperior rotation point of the humerus from posterior capsular contracture, GIRD, and repetitive torsional and shear overload generated by hyperexternal rotation
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Diagnosis
• Physical exam o Partial Thickness Cuff Tear
• Supraspinatus – strong but
painful in PTRTC
• Positive Impingement tests with PTRCT
o Neer, Hawkins, Impingement test
• Infraspinatus strong min pain
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Diagnosis
• In the overhead athlete - PTRCT is often associated
with posterosuperior labral tear (30%-50%)
o Levy et al AJSM 2011
o Morgan Arthroscopy 1998
o Ryu Arthroscopy 1992
o Snyder Arthroscopy 1991
o Andrews et al AJSM 1985
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Labral Tears
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Diagnosis
• Physical exam o Labral Tear
• SLAP – Obriens, 90/90,
Speeds, Hawkins
• Anterior –
Apprehension/Relocation,
Inferior load
• Posterior – Posterior load and
Jerk test, Directional loading
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What Happens After Injury
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Inflammatory Phase • Oliva et al Sports Med Arthosc Rev Sept,2011
• Begins 3-7 days after tendon injury
o Hematoma
o Platelet activation
o Migration of cells from fascicles, epitenon,
endotenon
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Formative Phase
o Begins around week 8 after injury
o Fibroblasts produce collagen (type III>type I)
• Initially more Type III, slowly becomes more
Type I
o Tenocytes become the main cell type
• Increased traction forces
• Requires 5-8 weeks to become mechanically
solid
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Remodeling Phase • Oliva et al Sports Med Arthosc Rev Sept,2011
o Better organization and cross-linking
o Complete tendon regeneration is never achieved
o Replaced tissue remains hypercellular
1901 Waseca EACO Flour team–State Champs (MN Historical Society)
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Growth Factors in Cuff Healing
• Oliva et al Sports Med Arthosc Rev Sept,2011
Week 1 Week 8 Week 16
Inflammatory Formative Remodeling
bFGF BMP COMP CTGF PDGF TGF IGF
BMP CTGF PDGF bFGF
BMP bFGF COMP PDGF TGF IGF (Cont until 24 weeks)
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Treatment
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Non-Operative Progression
• 25-35% of PTRCT progress to full-thickness tears with
persistent symptoms
o Kartus et al Arthroscopy 2006
o Safran et al AJSM 2011
o Yamanaka et al CORR 1994
• Younger patients with PTRCT more likely to progress
to full thickness tear, based on increased activity
level
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Non Operative Treatment • Due to Scapular Malposition or External
Impingement • Correct mechanics, scapular position
• Improve ROM
oDecrease GIRD if responsive to therapy
o Improve periscapular strength
• Subacromial Injection/NSAIDS
• Timing to Operative Treatment • 3-6 months usually accepted
• Expected RTS
• Biology of cuff healing
o Time needed to heal
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Operative Treatment
• Arthroscopic o Better visualization
o Better assessment of normal tension
o Less Invasive
• Labral Tears
• RTC Articular tear
• RTC Bursal Tear
• Impingement Lesions
• Intratendinous lesions
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• MRI and Exam should result in an expected
treatment course
• Arthroscopic Exam may trump all
o Be prepared for all options
o Prepare athlete for all post-operative possibilities
• *May not be a debridement only*
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Rotator Cuff Debridement alone • Relieve mechanical irritation, remove inflammatory cells
o Wolff 2006 JAAOS
• Debridement alone + decompression for PTRCT <50% supported by most data o Cordasco et al AJSM 2002
o Andrews et al 1985 Arthroscopy 85% satisfactory
o Snyder et al 1991 94% satisfactory
• Risk of progression to full thickness tear 15%-35%, with higher clinical failures after debridement for tears >50% o Kartus et al Arthroscopy 2006
• Mazoue/Andrews AJSM 2009 o 9/11 (81%) pitchers progressed to full thickness tear within 20 months of
debridement
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Takedown and Repair • Results (>50% initial tear)
o Deutsch JSES 2007 41 pts avg 49yo, 38 month f/u
• 98% satisfied, 40/41 returned to previous level
o Liem et al AJSM 2008
• 21 overhead athletes, amateur, avg f/u 25 months
o RTS 92% previous level
o Itoi, Weber, Lewis, Miller show similar results
+
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PASTA Repair
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PASTA Repair
• Ide at al AJSM 2005 avg 42yo, 39 month f/u o 16/17 good results
o Only 2/6 overhead athletes returned to sport
• Castagna et al, AJSM 2009 avg 57yo, 24mos o 98% good outcomes
o 41% pain on occasion with ABD/ER
• Sang-Jin Shin Arthroscopy July 2011 (Level 2) • PASTA vs takedown and repair for >50% PTRCT
• 92% success in both groups
• PASTA
o slower recovery, more pain, better integrity w/ f/u MRI
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Posterior Release
• Posterior capsular release
o Burkhart, Kibler, Morgan
o Consider when athlete is a “Stretch non-
responder”
o May consider when GIRD present w elbow
patholgoy
o Allows humeral head to sit more inferior and
posterior, decreasing abrasion with Internal
Impingement
o Aggressive post operative PT
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• How Long Doc?
• What are the chances of
being 100% Doc?
• Have you seen anyone
come back from this
Doc?
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Return to Sport • Based on outcome measure
o Level of play
o Age
• Levy et al 2010 AJSM Partial Thickness cuff tears with
concomitant type II SLAP repairs
• <50yo, no elite athletes
• 53% incidence of cuff tear with type II SLAP
• Similar UCLA scores, 92% returned to previous level
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Return to Sport
• Neri et al. AJSM 2011 (Level 3)
o 23 Elite overhead athletes
o Kerlan-Jobe scores
o PTRCT debrided <50% thickness
o SLAP repaired if >5mm labral detachment from
the glenoid rim
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Return to Sport
• Neri et al. AJSM 2011 (Level 3)
o 23 Elite overhead athletes
o Overall 57% return to previous level
• Labral repair only – 80% return to previous level
• Labral repair and PTRCT – 12.5% return to
previous level
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Return to Sport - MLB
• Rothman Institute, Philadelphia
• Level 4 Study
o Cohen et al, SportsHealth 2011
o 4 seasons 2003-2006 for one professional baseball club
o f/u 2 years minimum
o 28 Shoulder surgeries on 27 players
• 19 pitchers
• 8 position players
o Average draft position 15th round
• 4 major league players
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Return to Sport - MLB
• 22 Type II labral repairs
o 7 returned to previous level (32%)
• 1 labral debridement
o Returned to previous level (100%)
• 1 Rotator Cuff repair – full thickness
o Returned to higher level (100%)
• 1 Rotator Cuff debridement
o Returned to previous level (100%)
• 1 Posterior Capsular Release
o Returned to higher level (100%)
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What we know
o Partial thickness tears are likely to progress to full thickness tears in the young athlete
o The etiology for the tear should be addressed within reasonable limits and corrected if possible
o MRI/MRA is not 100% sensitive or specific, so be prepared for all options
o Small partial thickness tears do well with debridement +/- decompression
o Symptomatic Tears >50% may benefit from repair
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Important Points
• Return to sport for high level athletes improves with
less pathology
• There is no consensus on chances of returning to
sport at or above previous level for elite athletes
with current data
• Do not overlook need for posterior capsular
release
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Surgical Recommendations
• Articular PTRCT <50% = debridement +/-SAD
• Bursal PTRCT <50% = debridement, likely SAD
• PTRCT >50% = takedown and repair
• PASTA repair less predictable with current literature
• Posterior Capsular Release when unresponsive GIRD
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Thank you