The pathoanatomy of medial ligamentous disruption in the dislocated and multiple ligament injured knee

Nancy Park, Department of Orthopaedics and Rehabilitation, Yale School of Medicine, New Haven, CT, 06519, USA. Electronic address: nancy.park@yale.edu.
Jay Moran, Department of Orthopaedics and Rehabilitation, Yale School of Medicine, New Haven, CT, 06519, USA. Electronic address: jay.moran@yale.edu.
Logan Petit, Connecticut Orthopaedics, Hamden, CT 06518, USA. Electronic address: loganpetit1@gmail.com.
Joseph Kahan, Maine Medical Center, Portland, ME 04102, USA.Follow
William McLaughlin, Department of Orthopaedics and Rehabilitation, Yale School of Medicine, New Haven, CT, 06519, USA. Electronic address: William.mclaughlin@yale.edu.
Peter Joo, Department of Orthopaedics and Rehabilitation, Yale School of Medicine, New Haven, CT, 06519, USA. Electronic address: Peter.joo@yale.edu.
Michael Lee, Medical College of Wisconsin, Milwaukee, WI 52336, USA. Electronic address: m.s.w.lee99@gmail.com.
Joshua Green, Frank H. Netter MD School of Medicine at Quinnipiac University, North Haven, CT 06473, USA. Electronic address: Joshua.Green2@quinnipiac.edu.
Kinjal Vasavada, Department of Orthopaedics and Rehabilitation, Yale School of Medicine, New Haven, CT, 06519, USA. Electronic address: Kinjal.vasavada@yale.edu.
Isabel Chalem, Division of Sports Medicine, Department of Orthopaedic Surgery, New York University Langone Orthopedic Center, New York, NY 10016, USA. Electronic address: Isabel.Chalem@nyulangone.org.
Peter Jokl, Department of Orthopaedics and Rehabilitation, Yale School of Medicine, New Haven, CT, 06519, USA. Electronic address: Peter.jokl@yale.edu.
Michael J. Alaia, Division of Sports Medicine, Department of Orthopaedic Surgery, New York University Langone Orthopedic Center, New York, NY 10016, USA. Electronic address: Michael.Alaia@nyulangone.org.
Michael J. Medvecky, Department of Orthopaedics and Rehabilitation, Yale School of Medicine, New Haven, CT, 06519, USA. Electronic address: Michael.medvecky@yale.edu.

Document Type

Article

Publication Date

12-5-2024

Institution/Department

Sports Medicine

Journal Title

The Knee

Abstract

PURPOSE: To describe the medial-sided pathoanatomy and ligament injuries in acute MLKIs with medial-sided involvement andlook forassociated injury patterns based upon location of ligamentous injury. METHODS: Patients who underwent treatment for MLKI at two level-1 trauma centers were identified between January 2001 and May 2023. Only cases involvingcomplete disruption of the superficial medial collateral ligament (sMCL) were included. Zone of injury to the sMCL, the posterior oblique ligament (POL), the medial patellofemoral ligament (MPFL), the vastus medialis oblique (VMO) was recorded, as well as demographics,injury details, neurovascular status, and mechanism of injury.Data was summarized usingdescriptive statistics. RESULTS: A total of 92 patientswere included, with a mean age of 37.8 ± 12.7 years. Forty-four (47.8%) patients had a high velocity injury. Within sMCL tears, 39% were proximal avulsions, 29% were midsubstance tears, and 32% were distal avulsions. The medial-sided injury patterns were: 31 (33.7%) isolated sMCL tears, 24 (27.3%) combined sMCL, POL, and MPFL tears, 23 (25%) combined sMCL and MPFL tears, and 11 (12%) combined sMCL and POL tears. Most common location of sMCL injury varied based upon the number of associated medial knee ligaments injured: isolated sMCL (even distribution), sMCL & POL (distal), sMCL-MPFL (proximal), sMCL-POL-MPFL (proximal). CONCLUSION: Medial-sided ligament injuries seen MLKIs were found to occur in four injury patterns ranging from isolated sMCL or combined injury patterns of the adjacent medial structures. Additionally, location of sMCL injury varied based upon the number of medial-sided ligaments injured.

First Page

246

Last Page

254

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