acl reconstruction in the skeletally - denver, colorado · acl reconstruction in the skeletally...
TRANSCRIPT
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ACL Reconstruction in the Skeletally
Immature. Where We’ve Been, Are and
Going to
1st Annual International Extreme Sports Medicine Congress
Jay C. Albright M.D. Surgical Director Sports Medicine
Children’s Hospital Colorado Assistant Professor, CU, Department of Orthopedics
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Disclosure
• Speaker – Arthrex, DJO
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Agenda
• Where have we been
• Identify the past ideas and approaches
• Is this where we should be
• Where we are
• Surgical indications
• Approach to decision making for surgical
technique
• Where are we going
• Reapplying old ideas into new techniques 3
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Agenda
• Where have we been
• Identify the past ideas and approaches
• Is this where we should be
• Where we are
• Surgical indications
• Approach to decision making for surgical
technique
• Where are we going
• Reapplying old ideas into new techniques 4
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• 150,000+
reconstructions/yr in
USA
• 3-4% skelletally
immature
• ½ have meniscal tears
• Lipscomb (JBJS 1986)
ACL-Scope
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• Female ACL Injury
• NCAA Surveillance Studies
•2x – 8x increased risk
•basketball, soccer
• Pediatric & Adolescent
•Shea et al (POSNA 2005)
Epidemiology
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• Too young
• Wait
• No Cutting Sports
• PT
• Bracing
Traditional Care
7
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• Non-operative:
• Mizuta et al (JBJS-B 1985)
• 1/18 return to preinjury sport level, 6/18 meniscal tears
• McCarroll et al (AJSM 1988)
• 3/16 return to preinjury sport, 4/16 meniscal tears
• Angel & Hall (Arthroscopy 1989)
• 5/7 failure (ACL reconstruction)
• Graf et al (Arthroscopy 1992)
• 7/8 failure (ACL reconstruction, meniscal tears)
• Janarv et al (J Pediatr Orthop 1996)
• 16/23 failure (ACL reconstruction)
• Millett et al (Arthroscopy 2002)
• medial meniscus tears with delay in treatment
Treatment
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• Ganley et al:
• Comparison of early (<3 months)
• Or Delayed (<6 Months)
•Found up to 10x increased rates of cartilage
damage or irreparable meniscal tears
• Anderson, personal communication:
similar findings
Treatment
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ACL-Decision Making
• Surgery:
• Fail non-operative course
• Any Meniscal injury at least to preserve mensical function
• Those who refuse to limit high demand sports
• Counsel on risks of surgery prior to end of growth
• Growth abnormality
• Risk of short-term stabilization and possible future revision
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Agenda
• Where have we been
• Identify the past ideas and approaches
• Is this where we should be
• Where we are
• Surgical indications
• Approach to decision making for surgical
technique
12
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Treatment decision
8 Year old Male Young
5 or more years of growth
remaining
Tanner 1-2
Options=Physeal Sparing
Soft tissue transphyseal?
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Eight year old male
• Evaluate remaining growth potential • Chronologic age
•Menstral history • Bone age – Elbow/wrist films • Growth charts – over time • Tanner Stage – pubic hair • Comparison to family height • Growth plate appearance
•Radiographic/ MRI •Size of Epiphyseal bone
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Physeal-Sparing Reconstruction
Physeal-Sparing ACL Brief (Arthroscopy 1991)
6 pts; 3-6yr F/U: 6/6 laxity, 1/6 instability
Guzzanti et al (AJSM 2003) 8 pts, tibial tunnel; 2-7yr F/U: 1/8mm laxity, 0/8 instability
Anderson et al (JBJS 2003)
12 pts tunnels; 2-8yr F/U: 1.5 laxity, 0/12 instability
Kocher et al (JBJS 2005) 44 pts. ITB extra & intra-articular; 2-15 yr F/U: 4.5% revision
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17
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• 3-5 Years growth
remaining
• Elbow Growth Plates
not Closed
• Options
• All-epiphyseal
• Partial Transphyseal
• Soft Tissue
Transphyseal
• Quad with or without
patella
12 year old Female
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• <3Years growth
remaining
• Elbow Growth Plates
now Closed
• Options
• All-epiphyseal
• Partial Transphyseal
• Soft Tissue
Transphyseal
• Quad with or without
patella
15 year old Male
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ACL Reconstruction
• Transphyseal ACL • Not OK
• Campbell 1959 and Osterman 1994
• Heuter Volkman 1862
• Edwards 2001, Maketa 1988, and Guzzanti 1994
• Wester 1994
• OK • Lipscomb & Anderson (JBJS-A 1986)
• McCarroll et al (AJSM 1994)
• Matava & Siegel (Am J Knee Surg 1997)
• Aronwitz et al (AJSM 2000)
• Lo 1997, Bisson 1998, Noyes 1994
• Soft tissue interposition with graft prevents osseus bridging in small defects
• Stanitski 1959, Osterman 1994, Stadelmaier 1995
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Growth Disturbance
Palleta, 2010, Presentation
• 10 year experience with T 1-2 ~ 50
• Followed to near skeletal maturity
• Transphyseal HT
• No disturbance
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Agenda
• Where have we been
• Identify the past ideas and approaches
• Is this where we should be
• Where we are
• Surgical indications
• Approach to decision making for surgical
technique
• Where are we going
• Reapplying old ideas into new techniques 22
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Quad As a Graft
23
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Why look?
• Females Suggestions against use of hamstring autograft
due to neuromuscular disadvantage.
Recent study Retear rate 12% males but 22% Females
• Allograft Recent reports of up to 55% re-tear in younger
population • Singhal et al Arthroscopy 2007
• Growth BPTB difficult to use in all epiphyseal and will be
more likely to stop growth when used across physis
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Graft Choices
Perceived Draw Backs • Autograft
• ITB ? Strength
• Hamstring ? Weakness
• BTB Growth arrest
Ant knee pain
Patella Fx
• QTB Growth arrest
Quad weakness
Patella Fx
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What about the quad as a graft
• Stronger with the patella still attached
• Without is still more than twice as strong as
native ACL
• Comparable to BPTB and Hamstring with
regard to overall strength
• Less strength per unit area but more unit area per
size of graft
Harris NL et al. AJSM 1997 and Staubli et al AJSM 1999
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Comorbidities?
• No permanent weakness – Hamstring
• Same rate of anterior knee pain as
previously reported for allograft ~8%
• Similar re-tear rate 5-7%
Han et al CORR 2008
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Harvesting
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All-Inside
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Two Femoral options
30
10-12mm
10-12mm
30mm
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• A drill bit and guide are placed through the medial portal and positioned on the tibia • 6-8mm anterior to the
PCL
• In the posterior portion of the ACL footprint
• At the posterior aspect of the anterior root of the lateral meniscus
Tibial side
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Results
Trans-Physeal Quad-Patella
• 100 patients with minumum 2 year follow-up currently being looked up
• Preliminarily, only 3 graft failures (both at 15 months) Post op
• ~93/100 returned to same level of sport
• No premature growth arrests partial or complete
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• Recommendations • Know Growth Remaining
• Shared Decision Making
• Risks: Non-operative Treatment
• Meniscal/ Chondral Injury
• Risks: Operative Treatment
• Growth Disturbance
• Understand Pediatric Knee Anatomy
• Distal Femoral Physis & Over-Top
• Proximal Tibial Apophysis
Conclusions
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ACL-Recommendations
• Extra-articular/OTT avoid dissection or elevation of physis • peripheral physeal damage, most dangerous
• Salvage Menisci
• Do Not cross physis with fixation or bone plugs
• Place tibial hole in most central/posterior portion of ACL footprint as possible
• Start tibial drill hole as far distal as possible • decrease size of defect in physis as more perpendicular
• Avoid over constraining
• Small tunnel
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• Long-Term Complications of Pediatric Knee Injuries • ACL Reconstruction
• Arthritis
• Stiffness, Pain, Retear Graft
• Meniscal Injury
• Discoid Lateral Meniscus: Uncertain
• Complete Menisectomy: Arthritis
• Partial Menisectomy: Uncertain
• Chondral Injury
• Cartilage Injury: Arthritis
• OCD: Arthritis
Conclusions
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Future Direction
• Investigate strength of fixation constructs
• Would like to avoid needing to use aperture screw
fixation
• Decrease risk of growth arrest on Tibia
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Thank You
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Graft Choices
• Allograft N/(N/mm)
• Tib A, Post T, PL 3000/300
• Hamstring 4090/776
• BTB 2900/
• QTB 3500/
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The Child’s ACL
Where We’ve Been, Are and Going To
Jay C Albright, MD
Surgical Director Pediatric Sports Medicine
Children’s Hospital Colorado
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Disclosure
• Arthrex
• Speaker
• Honoraria
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An ACL Case Gone Bad
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Treatment Algorithm
• 2?-3? Years growth
remaining
• All-epiphyseal
• Partial Transphyseal
• Soft Tissue
Transphyseal
• Quad with or without
patella
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Treatment Algorithm
• Not as young
• Tanner 3-4
• 1-2 years of growth remaining
• Transphyseal
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Evolution
• Graft Choices
• Have heard of others
• Here is another viable option
• For the middle to older adolescent
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Why look?
• Females
• Suggestions against use of hamstring autograft
due to neuromuscular disadvantage
• Allograft
• Recent reports of up to 55% re-tear in younger
population • Singhal et al Arthroscopy 2007
• Growth
• BPTB difficult to use in all epiphyseal and will be
more likely to stop growth when used across
physis
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Graft Choices
• Reinhardt et al, Graft selection for ACLr: A Level I Sys Review ‘10
• 6 studies qualified
• BTB 11 failures (7.2 %)
• HT 26 (15.8%) p = 0.02
• If eliminate 2s HT studies
•BTB 4/106 (3.8%)
•HT 4s 12/110 (10.9%)
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Graft Choices
• Reinhardt et al, Graft selection for ACLr: A Level I Sys Review ‘10
• 6 studies qualified
• Strength
•Variable
• ½ NS diff
• ½ HT (2 or 4s) Weaker at final follow-up
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What about the quad as a graft
• Stronger with the patella still attached
• Without is still more than twice as strong as
native ACL
• Comparable to BPTB and Hamstring with
regard to overall strength
• Less strength per unit area but more unit area per
size of graft
Harris NL et al. AJSM 1997 and Staubli et al AJSM 1999
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Comorbidities?
• No permanent weakness – Hamstring
• Same rate of anterior knee pain as previously
reported for allograft ~8%
• Similar re-tear rate 5-7%
Han et al CORR 2008
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Graft Choices
• Allograft • Barrett et al BTB auto vs allo fresh frozen
• FF 2.6-4.2x higher failure than auto in higher tegner/younger patients (<40)
• Singhal et al
• 23 % failure with 38% re-operation in frozen soft tissue <25 yo
• Gorschewsky et al
• 2 studies showing high failure in young patients returning to level I ACL dependent sports
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What about growth
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Growth Disturbance
• Physeal defects okay: • No leg length disturbances
•Aicroth 2002, Aronowitz 2000, Matava, Siegel 1997, McCarroll 1994
•3 reruptures with activity
•Majority close to skeletal maturity
• Soft tissue interposition with graft prevents osseus bridging in small defects
•Stanitski 1959, Osterman 1994, Stadelmaier 1995
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13 Yr Old Female
• Soccer Player
• Travel Select State Team
• BA 13
• Olecranon Apophysis Closing
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Harvesting
• 3-4 cm incision
• 12-15mm bone (imm) • 75-80mm graft length
• ¼ inch curved osteotome • Strip proximally
• Close tendon • Fill bone defect with
Allograft or substitute later
Diagrams from Han et al
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Load the graft onto a Chinese fingertrap
shortening device
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Tunnel Prep
• Femoral Options
• Acorn reamer
• Low profile Reamer
• Flip cutter
• Especially revisions
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Tunnel Prep
• In Skeletally immature
• Femoral tunnel depth needs to be 30mm
• 3 mm distance of the perichondral ring to the over
the top position
• Average distance from joint to superior aspect of
growth plate in tunnel
• Posteriorly = 5mm
• Anteriorly = 10mm
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Tunnel Prep
• Tibia • Antegrade/intra-
articular cutter
• Depth so no bottoming out of graft
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Pass Graft
• Standard
• Into femur first
• Flip button
• Shorten device fully to seat bone block at top of
tunnel
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Pass Graft
• Into tibia
• Fix with aperture screw
• Check to make sure screw not crossing growth
plate
• Back screw by tying sutures in graft over button
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Title of slide
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Title of slide
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From the inside
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What now
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What Now
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Fixation Gone
• New Graft?
• New Fixation?
• Skeletally immature
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Whip Stitch
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Whip Stitch, Hay Bail, Rip Stop, ….
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Whip Stitch, Hay Bail, Rip Stop, New
Button Fixation, Hail Mary
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Rehab
• Hinged Post op knee immobilizer
• WBAT
• Immediate PT
• FROM – no meniscal repair
• Goal 0-90 within 1 week
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Rehab
• Immediate SLR, Quad Sets
• No meniscal repair, out of brace
• 75 perfect SLR
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Rehab
• At 3 Months post op
• ACL brace
• Jogging
• At 4-6 months
• Sprinting
• At 5-8 months
• Cutting/twisting
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RTP?
• For my patients
• PT – functional tests within 85-90% opposite
leg
• My manual muscle test ~90% opposite leg
• +/- isometric strength test
• Absolutely if the patient/therapist has access
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My experience
• Over 80 with more than 2 years follow-up
• 2 Failures in under 18 at time of surgery
• No growth arrests partial or complete
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Future Direction
• Expand age range to perform surgeries in kids with up to 2.5-3.5 years remaining
• To this point only kids that have past peak height velocity (elbow closed)
• Investigate strength of fixation constructs • Would like to avoid needing to use aperture screw
fixation
• Decrease risk of growth arrest on Tibia
• Could use this graft in the all epiphyseal construct
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Thank You
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Femoral growth plate measurement.mov
acl femoral seating1.mov
Tibial seating.mov