Addressing Medial and Lateral Laxity in Revision …...2017/06/06 · Addressing Medial and Lateral...
Transcript of Addressing Medial and Lateral Laxity in Revision …...2017/06/06 · Addressing Medial and Lateral...
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Addressing Medial and Lateral Laxity
in Revision ACL Reconstruction
ISAKOS 2017 Congress
June 6, Shanghai, China
Robert G. Marx, MD MSc FRCSC
Professor of Orthopedic Surgery
Weill Cornell Medicine
Hospital for Special Surgery
New York, New York
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Disclosures
• Books Royalties:
– Author, The ACL Solution. Demos Health, 2012.
– Editor, Revision ACL Reconstruction: Indications and Technique.
Springer, 2014.
• Journal Editorship:
– Deputy Editor for Sports Medicine
– Associate Editor of Evidence-Based Orthopaedics
Journal of Bone & Joint Surgery
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Chronic Collateral Laxity
• Defined as a cause for failed ACL reconstruction
(O’Brien SJ, Warren RF, Pavlov H et al, J Bone
Joint Surg 1991).
• Mechanism: Medial/lateral opening puts stress on
the ACL graft (LaPrade RF et al, Am J Sports Med
2002).
• Must be addressed as part of revision surgery.
• This laxity may or may not be identified on MRI.
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Physical Exam
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Collateral Laxity
• Compare closely to the other side
• Slight laxity in flexion can generally be
accepted – if identical laxity in full
extension
• Any notable difference compared to the
normal side in full extension should be
addressed
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Lateral Side
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Isolated Repair of the Posterolateral
Corner is generally not indicated
in the chronic situation.
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Reconstruction
Technique
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Reconstruction of FCL and PFL Posterolateral
Capsular Shift
Single Soft Tissue Graft Reconstruction of the
Fibular Collateral Ligament & Posterolateral
Corner
Schechinger, Levy, et al, Arthroscopy, 2009
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22 year old Female
• ACL reconstruction 3 years prior
• Lateral reconstruction 1 year prior
• No complaints of instability
• Complains of medial pain with activity
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Post-op Gait
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Medial Side Laxity
• Mild difference in extension (chronic) =
Plication (proximal repair)
• Significant opening in extension =
Reconstruction (with graft)
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Insert MRI slide coronal image, I did one recently –
let’s pull the name and I will show you
TO INSERT
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Canata technique
Canata et al., CORR 2012
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MCL Reconstruction with
Achilles Tendon Allograft
Marx and Hetsroni, CORR 2012
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Reconstruction with
Semitendinosus Autograft
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46yo female
• ACL injury skiing this past winter
• Surgery in Colorado 2 days later
• Six months later complaining of
instability with daily activities
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Note: ACL was not revised
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Managing Collaterals in
Revision ACL surgery:
Take Home Messages • Examine collateral ligaments carefully in full
extension and slight flexion pre-op for every
revision ACL reconstruction
• Long Leg X-Ray pre-op
• Reconstruct collateral ligaments and/or perform
osteotomy as indicated
• Osteotomy can be performed in isolation and then
revision ACL reconstruction later if needed
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Thank You!
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Medial or collateral ligaments must be
addressed in ACL reconstruction to:
1. Prevent knee stiffness
2. Reduce risk of ACL graft failure
3. Decrease risk of arthritis
4. Preserve meniscal integrity