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A Flat Reconstruction Of The Medial Collateral Ligament And Anteromedial Structures Restores Native Knee Kinematics - A Biomechanical Robotic Investigation

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A Flat Reconstruction Of The Medial Collateral Ligament And Anteromedial Structures Restores Native Knee Kinematics - A Biomechanical Robotic Investigation

Adrian Deichsel, MD, GERMANY Christian Peez, MD, GERMANY Michael J. Raschke, MD, Prof., GERMANY Alina Albert, M.Sc., GERMANY Mirco Herbort, MD, Prof., GERMANY Christoph Kittl, MD, MD(res), GERMANY Christian Fink, MD, Prof., AUSTRIA Elmar Herbst, MD, PhD, GERMANY

Department of Trauma, Hand and Reconstructive Surgery, University Hospital Münster, Münster, NRW, GERMANY

2025 Congress ePoster Presentation 2025 Congress Not yet rated

Anatomic Location

Knee

Anatomic Structure

Ligaments

Diagnosis / Condition

Tears

Treatment / Technique

Repair / Reconstruction

Ligaments

MC Ligament

Summary: Insufficiency of the superficial and deep MCL leads to excess laxity in valgus, external tibial rotation, anterior tibial translation, and anteromedial translation, which can be restored by a combined flat reconstruction of the superficial MCL and the anteromedial corner.

Background

Instabilities of the superficial medial collateral ligament (sMCL) and anteromedial structures of the knee result in excess valgus and external tibial rotation as well as tibial translation. Different techniques exist for reconstruction of the anteromedial structures, of which many are not biomechanically validated.

Purpose

To evaluate a flat reconstruction of the sMCL and anteromedial structures in restoring knee kinematics in the combined MCL and anteromedial deficient knee.

Methods

Eight cadaveric knee specimens were tested in a 6 degrees of freedom robotic test setup. Force-controlled clinical laxity tests were performed with 200 N of axial compression in 0°, 30°, 60°, and 90° of flexion: 8 Nm valgus torque, 5 Nm external tibial rotation (ER) torque, 89 N anterior tibial translation (ATT) force, and an anteromedial drawer test consisting of 89 N ATT force under 5 Nm ER torque. After determining the native knee kinematics, the sMCL was transected, followed by the deep MCL. Subsequently, a flat reconstruction of the sMCL and anteromedial structures, utilizing a rectangular femoral bone tunnel, was performed. Mixed linear models were used for statistical analysis (P < 0.05).

Results

Cutting of the sMCL led to statistically significant increased laxity regarding valgus rotation, external tibial rotation, anterior tibial translation, and anteromedial translation in all tested flexion angles (P < 0.05). A combined instability of the sMCL and dMCL led to further increased knee laxity in all tested kinematics and flexion angles (P < 0.05). After flat reconstruction of the deficient structures, the knee kinematics were not significantly different from the native state (P = n.s.).

Conclusion

Insufficiency of the superficial and deep MCL leads to excess laxity in valgus, external tibial rotation, anterior tibial translation, and anteromedial translation, which can be restored by a combined flat reconstruction of the superficial MCL and the anteromedial corner.

Anatomical Characterization Of The Distance Between Femoral Insertions Of The Lateral Collateral Ligament And Popliteal Tendon In The Chilean Population: Implications For The Treatment Of Posterolateral Corner Injuries ePoster Presentation Rodrigo Olivieri, MD, CHILE Jose Ignacio Laso, Md, CHILE Esteban Giannini, MD, CHILE Ernesto Donoso, MD, CHILE Nicolas Franulic, MD, CHILE Jaime Ignacio Ugarte Checura, MD, CHILE Nicolas Castro, MD, CHILE
Knee Stability And Clinical Outcomes After Double-Bundle Posterior Cruciate Ligament Reconstruction Using Hamstring Tendon Autografts: Comparison With Single-Bundle Reconstruction ePoster Presentation Eiji Kondo, MD, PhD, JAPAN Yoshio Nishida, MD, JAPAN Zenta Jotoku, MD, PhD, JAPAN Koji Iwasaki, MD, PhD, JAPAN Tomohiro Onodera, MD, PhD, JAPAN Tomonori Yagi, MD, PhD, JAPAN Norimasa Iwasaki, MD, PhD, JAPAN Kazunori Yasuda, MD, PhD, Prof., JAPAN
Low-Profile All-Suture Anchor Construct Demonstrates Non-Inferiority To Spiked Washer And Bone Staple In Medial Collateral Ligament Reconstruction: A Cadaveric Biomechanical Study ePoster Presentation Timothy Lording, MBBS, FRACS, AUSTRALIA Felipe Moreira Borim, MD, PhD, FEBOT, SPAIN Anna-Katharina Calek, MD, SWITZERLAND Dale Robinson, B Eng, B Sci, PhD, AUSTRALIA Lachlan Batty, FRACS, AUSTRALIA David Ackland, PhD, AUSTRALIA
A Specific Area In The Femoral Footprint Of The Posterior Cruciate Ligament Acts As A Major Contributor In Resisting Posterior Tibial Displacement – A Biomechanical Robotic Investigation ePoster Presentation Adrian Deichsel, MD, GERMANY Thorben Briese, MD, GERMANY Wenke Liu, MD, GERMANY Michael J. Raschke, MD, Prof., GERMANY Alina Albert, M.Sc., GERMANY Christian Peez, MD, GERMANY Elmar Herbst, MD, PhD, GERMANY Christoph Kittl, MD, MD(res), GERMANY
A Flat Posterior Cruciate Ligament Reconstruction With A Rectangular Femoral Tunnel Restores Native Knee Kinematics - A Biomechanical Robotic Study ePoster Presentation Adrian Deichsel, MD, GERMANY Florian Gellhaus, MD, GERMANY Christian Peez, MD, GERMANY Michael J. Raschke, MD, Prof., GERMANY Moritz Martinovic, M.Sc., GERMANY Elmar Herbst, MD, PhD, GERMANY Mirco Herbort, MD, Prof., GERMANY Christian Fink, MD, Prof., AUSTRIA Christoph Kittl, MD, MD(res), GERMANY
The Role Of Fiber Areas In The Tibial Footprint Of The Posterior Cruciate Ligament Changes Depending On Flexion Angle – A Biomechanical Robotic Investigation ePoster Presentation Adrian Deichsel, MD, GERMANY Thorben Briese, MD, GERMANY Wenke Liu, MD, GERMANY Michael J. Raschke, MD, Prof., GERMANY Alina Albert, M.Sc., GERMANY Christian Peez, MD, GERMANY Elmar Herbst, MD, PhD, GERMANY Christoph Kittl, MD, MD(res), GERMANY

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A Flat Reconstruction Of The Medial Collateral Ligament And Anteromedial Structures Restores Native Knee Kinematics - A Biomechanical Robotic Investigation

A Flat Reconstruction Of The Medial Collateral Ligament And Anteromedial Structures Restores Native Knee Kinematics - A Biomechanical Robotic Investigation

Background

Purpose

Methods

Results

Conclusion

Multi-Ligament Knee Injury ePosters

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A Flat Reconstruction Of The Medial Collateral Ligament And Anteromedial Structures Restores Native Knee Kinematics - A Biomechanical Robotic Investigation

A Flat Reconstruction Of The Medial Collateral Ligament And Anteromedial Structures Restores Native Knee Kinematics - A Biomechanical Robotic Investigation

Background

Purpose

Methods

Results

Conclusion

Multi-Ligament Knee Injury ePosters

Anatomical Characterization Of The Distance Between Femoral Insertions Of The Lateral Collateral Ligament And Popliteal Tendon In The Chilean Population: Implications For The Treatment Of Posterolateral Corner Injuries

Knee Stability And Clinical Outcomes After Double-Bundle Posterior Cruciate Ligament Reconstruction Using Hamstring Tendon Autografts: Comparison With Single-Bundle Reconstruction

Low-Profile All-Suture Anchor Construct Demonstrates Non-Inferiority To Spiked Washer And Bone Staple In Medial Collateral Ligament Reconstruction: A Cadaveric Biomechanical Study

A Specific Area In The Femoral Footprint Of The Posterior Cruciate Ligament Acts As A Major Contributor In Resisting Posterior Tibial Displacement – A Biomechanical Robotic Investigation

A Flat Posterior Cruciate Ligament Reconstruction With A Rectangular Femoral Tunnel Restores Native Knee Kinematics - A Biomechanical Robotic Study

The Role Of Fiber Areas In The Tibial Footprint Of The Posterior Cruciate Ligament Changes Depending On Flexion Angle – A Biomechanical Robotic Investigation