Objectives: Arthroscopic reshaping surgery is the first treatment option for a symptomatic discoid lateral meniscus (DLM) to preserve the peripheral rim. However, adequate residual volume of meniscus during surgery is unclear. The purpose of this study was to measure the meniscus just after reshaping surgery, 3 months and 2 years after the surgery for a DLM and divided into three groups; higher, middle and low volume, to verify when the morphological change occurred.

Methods

We retrospectively reviewed DLM patients who underwent surgery minimum 2 years follow-up. Magnetic resonance imaging (MRI) was performed just after surgery, 3 and 24 months postoperatively. The residual meniscal width of anterior horn, midbody and posterior horn were measured every period. We divided into three groups according to the volume of the midbody based on coronal MRI just after surgery: high volume group (more than 13mm) (H group), middle volume group (9mm or more and less than 13mm) (M group) and low volume group (less than 9mm) (L group). Statistical differences between groups were calculated using a one-way analysis of variance with a post hoc Student’s t-test. p < 0.05 was considered significant.

Results

We included 55 knees of 55 patients in this study. The mean age at the time of surgery was 16.7 years. Overall, the width of the midbody decreased significantly from 0 to 24 months after surgery from 10.6 to 6.4 mm (P<0.001). The width of the midbody in H and M group was wider than that in M (P<0.001) and L (P<0.001) group at 0 months, respectively. Although the width of the midbody in H group was no difference between M group at postop 3 (P=0.11) and 24 (P=1.00) months, H and M groups was wider than L groups at postop 3(P<0.001, <0.001) and 24 (P=0.009, 0.015) months, respectively.

Conclusions

More than 13mm residual meniscus (H group) rapidly decreases the width to the same level of M group and there was no difference between H and M group at 24 months after the surgery. The residual meniscus width with the midbody would be recommended to be around 11 mm during surgery.

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No Significant Difference In Meniscus Root Repair Failure Rates Or Patient Reported Outcomes For Patients Greater Than 60-Years-Old. ePoster Presentation Alexandra Stevens, BS, UNITED STATES Robert A. Magnussen, MD, MPH, UNITED STATES Christopher C. Kaeding, MD, UNITED STATES Eric Milliron, BS, UNITED STATES Parker Cavendish, BS, UNITED STATES Tyler Barker, PhD, UNITED STATES Noah Mallory, BE, UNITED STATES James C. Kirven, BS, UNITED STATES David C. Flanigan, MD, UNITED STATES
Proof Of Concept Of A Novel Surgical Technique To Improve The Treatment Of Horizontal Cleavage Meniscus Tears: “The Quad Tendon Augmentation Technique”. ePoster Presentation Maximiliano Ibañez, MD, SPAIN Caroline Mouton, PhD, LUXEMBOURG Felix Hoffmann, MD, LUXEMBOURG Romain Seil, MD, Prof., LUXEMBOURG
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Clinical and Radiologic Outcomes of Medial Meniscus Posterior Root Repair Using a Transtibial Double Tunnel Pull-Out Technique Using Modified Mason-Allen Stitches ePoster Presentation Du-Han Kim, Prof. , KOREA, REPUBLIC OF
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Is Mri Sensitive In Diagnosing Ramp Lesion Medial Meniscus Injuries After Acl Injury? ePoster Presentation Andrzej Mioduszewski, MD, PhD, POLAND Mikolaj Wrobel, MD, POLAND Grzegorz Klos, MD, POLAND Juliusz Sroczynski, MD, POLAND Wojciech Gabriel Bocheński, MS, POLAND Mateusz Nawrocki, POLAND
Concomitant Medial and Lateral Meniscus Root Tears: Demographics and Comparative Survivorship and Patient-Reported Outcomes in Dual-Repairs Compared to Non-Dual-Repairs ePoster Presentation Joseph J. Ruzbarsky, MD, UNITED STATES Annabel R. Geissbuhler, BS, UNITED STATES Dane Lind, BS, UNITED STATES John Apostolakos, MD, MPH, UNITED STATES Grant J. Dornan, MS, UNITED STATES
Delay in progression of OA, better root healing and extrusion correction is seen in concurrent root repair with high tibial osteotomy (HTO) than isolated root repair for moderate varus aligned knees ePoster Presentation Silvampatti Ramasamy Sundararajan, MS(Orth), INDIA Rajagopalakrishnan Ramakanth, D.ortho, DNB(ortho), D.SICOT, INDIA
The Usefulness Of Superficial Medial Collateral Ligament Transection In Medial Meniscal Procedures During Medial Open-Wedge High Tibial Osteotomy ePoster Presentation Eiji Sasaki, MD, PhD, JAPAN Yuka Kimura, MD, PhD, JAPAN Takahiro Tsushima, MD, PhD, JAPAN Yukiko Sakamoto, MD, PhD, JAPAN Eiichi Tsuda, Prof., JAPAN Yasuyuki Ishibashi, MD, JAPAN
The Impact Of BMI And Concomitant Knee Pathology On Medial And Lateral Meniscus Tear Complexity In The Pediatric Population ePoster Presentation Kristen N. Reikersdorfer, BA, UNITED STATES Serafina Faith Zotter, BS, UNITED STATES Nikolaos K. Paschos, MD, PhD, UNITED STATES
Semitendinosus Graft for Meniscal Autograft Transplant Without Detaching the Tendon from the Tibia ePoster Presentation Shammas Basheer Muhammed, DNB,D ORTHO , MS ORTHO, INDIA
Contralateral Synovial Fluid Biomarkers Predict 10-Year Patient-Reported Outcomes Of Arthroscopic Partial Meniscectomy ePoster Presentation Vishal Sundaram, BA, UNITED STATES Emily Berzolla, BS, UNITED STATES Michael Moore, BA, UNITED STATES Nathaniel P. Mercer, MD, UNITED STATES Bradley Austin Lezak, MD, MPH, UNITED STATES Heath Patrick Gould, MD, UNITED STATES Daniel James Kaplan, MD, UNITED STATES Eric Strauss, UNITED STATES
Medial Meniscus Tears with Grammar Signs Benefit from Operative Intervention in the Setting of Early Arthritis ePoster Presentation Lydia Mckeithan, MD, UNITED STATES Shannon Tse, BMBS, UNITED STATES Matthew Frederickson, MD, UNITED STATES Jingyanshan Li, MD, UNITED STATES Cassandra Lee, MD, UNITED STATES
Relative Meniscal Extrusion After Meniscal Allograft Transplantation Progressed During A Long-Term Follow-Up: Average 11 Years Follow-Up Longitudinal Magnetic Resonance Imaging Study ePoster Presentation Sang-Min Lee, Prof., KOREA, REPUBLIC OF Lih Wang, MD, PhD, KOREA, REPUBLIC OF Jung Shin Kim, Prof., KOREA, REPUBLIC OF Won Chul Shin, Prof., KOREA, REPUBLIC OF
A Novel Method for Evaluating the Effect of a Lateral Meniscus Posterior Root Tear on the Loaded Mechanics of a Human Cadaveric Knee’s Lateral Compartment ePoster Presentation Edward Hoptioncann, BASc, CANADA Jordan Broberg, PhD, CANADA Parth Lodhia, MD, FRCSC, CANADA David R. Wilson, DPhil, CANADA Andrew Yung, MASc, CANADA Kirsten Bale, BSc, CANADA
Clinical And MRI Outcomes Following Meniscal Repair: A Comparison Between Tear Types ePoster Presentation Elias Ammann, MD, SWITZERLAND Jay R. Ebert, PhD, AUSTRALIA Luke Rao, MD, AUSTRALIA Antony Liddell, FRACS(Orth), FAOrthA, AUSTRALIA Usman Najeeb Bhatty, FRCS, MB ChB, BSc, UNITED KINGDOM Ross Radic, MBBS FRACS (Ortho) FAOrthA, AUSTRALIA
Arthroscopic All-Inside Wrapping Repair of Lateral Meniscus Bucket-Handle Tears: Clinical and Imaging Outcomes ePoster Presentation Kun-Hui Chen, MD, TAIWAN En-Rung Chiang, MD, PhD, TAIWAN Hsuan‑Hsiao Ma, MD, TAIWAN
Suture Versus Bony Fixation Techniques In Meniscal Allograft Transplantation (Mat) Outcomes; A Meta-Analysis ePoster Presentation Iswadi Damasena, MD, FRACS, AUSTRALIA James Onggo, MBBS(Hons), AUSTRALIA Rahul Kakria, MD, AUSTRALIA
Mid-Term Outcomes Following Repair Of Discoid Meniscus Tears In Pediatric Patients: A Single-Institution Retrospective Review ePoster Presentation Katherine L. Esser, BS, UNITED STATES Larry Chen, BS, UNITED STATES Neehar Desai, BS, UNITED STATES Luilly Vargas, MD, UNITED STATES Caroline Vonck, MD, UNITED STATES Cordelia Carter, MD, UNITED STATES Guillem Gonzalez-Lomas, MD, UNITED STATES Laith M. Jazrawi, MD, UNITED STATES
Knee Injury Detection Using Unsupervised Machine Learning Model ePoster Presentation Gonzalo F. Ferrer, MD, CHILE Francisco Jose Gonzalez Rojas, MD, CHILE Ignacio Andres Muñoz Eichler, Lic, CHILE Alejandro Orizola, CHILE Fernando Radice, MD, CHILE
The Impact Of Introducing An Acute Knee Trauma Service In The Belfast Trust: Reduced Waiting Times And Improved Rates Of Meniscal Repair. ePoster Presentation Catherine Gilmore, Mb Bch BAO MSc, UNITED KINGDOM Mark Steven Hanna, BMBCh MA(Oxon) MRCSI, UNITED KINGDOM Jonathan Warnock, FRCS, UNITED KINGDOM Ciara M. Stevenson, MBBCh, BaO, FRCS(Orth), UNITED KINGDOM
Magnetic Resonance Imaging at 120° Flexed-Knee Position is a Novel Method for Preoperative Detection of Meniscal Ramp Lesion in Anterior Cruciate Ligament-Injured Knee ePoster Presentation Satoshi Nonaka, MD, JAPAN Kazuhisa Hatayama, MD, PhD, JAPAN Hibiki Kakiage, MD, JAPAN Masanori Terauchi, MD, JAPAN HIrotaka Chikuda, MD, PhD, JAPAN
Analysis of Risk Factors for Medial Meniscus Extrusion Focusing on the Meniscal Tear Type ePoster Presentation Tomoya Iseki, MD, PhD, JAPAN Hiroshi Nakayama, MD., PhD., JAPAN Shintaro Onishi, MD, PhD, JAPAN Ryo Kanto, MD, PhD., JAPAN Yoshitaka Nakao, MD, JAPAN Shunsuke Akai, MD, JAPAN Akira Kawai, MD, JAPAN Hiroki Miya, MD, JAPAN Shota Morimoto, MD, PhD, JAPAN Toshiya Tachibana, MD, PhD, JAPAN

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The Adequate Volume Of Midbody During The Intraoperative Finding Is 11Mm For Reshaping Surgery Of Discoid Lateral Meniscus

The Adequate Volume Of Midbody During The Intraoperative Finding Is 11Mm For Reshaping Surgery Of Discoid Lateral Meniscus

Introduction

Methods

Results

Conclusions

Knee Meniscus ePosters

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The Adequate Volume Of Midbody During The Intraoperative Finding Is 11Mm For Reshaping Surgery Of Discoid Lateral Meniscus

The Adequate Volume Of Midbody During The Intraoperative Finding Is 11Mm For Reshaping Surgery Of Discoid Lateral Meniscus

Introduction

Methods

Results

Conclusions