Summary: This study assesses the implications of demographic variables and coronal plane alignment on outcomes of meniscal root repair and provides additional guidelines to the literature to appropriately identify proper surgical candidates.

Objectives: Meniscal root tears, defined as a radial tear occurring within 1 cm of meniscal attachment or an avulsion of the meniscus attachment site to bone, comprise up to 20% of meniscal injuries. Previous studies have identified patient demographics such as Body Mass Index (BMI), age, sex and lower extremity coronal plane alignment as important factors that can impact clinical outcomes after meniscal root repairs. However, there is no standardized set of guidelines to identify proper surgical candidates for meniscal root repair based on coronal plane alignment. The purpose of this study was to evaluate the impact of coronal plane alignment on outcomes of root repair. We hypothesized that patients with lateral root repairs performed in a valgus knee or medial root repairs performed in a varus knee (“at-risk” group) would report worse patient-reported outcomes.

Methods

Patient demographic and surgical data were retrieved from chart review of all meniscus repairs performed at an academic center between 2006 and 2018. Patients between 18 and 65 years old with adequate full length weight bearing radiographs for measuring the mechanical axis were included. Patients were contacted to complete patient-reported outcome measures (PROM): Knee Injury and Osteoarthritis Outcome Score (KOOS) and International Knee Documentation Committee subjective score (IKDC). Patients with varus alignment (> 3 degrees) and a medial root repair, or valgus alignment (>3 degrees) and a lateral root repair were considered “at-risk”. PROMs were compared between at-risk groups versus patients within 3 degrees of neutral mechanical axis. Independent t-tests for continuous variables and chi-squared test for categorical variables were utilized to analyze relationships among body mass index subgroups, level of malalignment, PROMs, and complications.

Results

A total of 62 patients who underwent transtibial meniscus root repair were identified. Twenty patients met inclusion criteria, of which 9 patients (45%) were considered “at-risk” with varus-aligned knees with medial root tears. Patients at-risk of failure had a greater absolute mean mechanical axis (-6.8 degrees) when compared to patients not at-risk of failure (-0.091 degrees) (p< 0.001). Additionally, patients at-risk of failure had a shorter length of mean follow-up time (13.0 months) when compared to patients not at-risk of failure (15.3 months) (p=0.005). No significant differences were noted between the groups in patient age, sex, BMI, or PROMs (Table 1).

Conclusion

This study assesses the implications of demographic variables and coronal plane alignment on outcomes of meniscal root repair and provides additional guidelines to the literature to appropriately identify proper surgical candidates. Although more studies are needed to confirm these findings, this study demonstrates no associated differences in outcome of root repair based on coronal plane alignment.

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The Hidden Lesion of the Knee: Risk Factors Study ePoster Presentation Mohamed Amine Gharbi , MD, TUNISIA Anis Tebourbi, MD, TUNISIA Moatassem Belleh Jelassi, MD, TUNISIA Rami Triki, TUNISIA Ramzi Bouzidi, PhD, TUNISIA Khelil Ezzaouia, PhD, TUNISIA Mouadh Nefiss, MD, TUNISIA
Medial Meniscus Repair only Partially Restores In-Vivo Knee Kinematics after ACL Reconstruction ePoster Presentation Alberto Grassi, PhD, ITALY Piero Agostinone, MD, ITALY Stefano Di Paolo, Eng, ITALY Gian Andrea Lucidi, MD, ITALY Erika Pinelli, MsC, ITALY Gregorio Marchiori, MD, ITALY Marco Bontempi, PhD, ITALY Laura Bragonzoni, Prof., ITALY Stefano Zaffagnini, MD, Prof., ITALY
Clinical Outcomes After the Repair of Isolated Full Radial Tear at Midbody of Lateral Meniscus - All-Inside Suture Repair vs Trans-Capsular Suture Repair - ePoster Presentation Ryohei Uchida, MD, PhD, JAPAN Shuji Horibe, MD, PhD, JAPAN Yoshinari Tanaka, MD, PhD, JAPAN Kazutaka Kinugasa, MD, PhD, JAPAN Yuta Tachibana, M.D., Ph.D., JAPAN Akira Tsujii, MD, PhD, JAPAN Konsei Shino, MD, PhD, JAPAN
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Outcomes of Arthroscopic All-Inside Repair are Improved Compared to Transtibial Pull-Out Repair of Medial Meniscus Posterior Root Tears ePoster Presentation Kyoung Ho Yoon, MD, PhD, Prof., KOREA, REPUBLIC OF Jae-Young Park, MD, KOREA, REPUBLIC OF Cheol Hee Park, MD, PhD, KOREA, REPUBLIC OF Sang-Gyun Kim, MD, PhD, KOREA, REPUBLIC OF Yoon-Seok Kim, MD, KOREA, REPUBLIC OF Hee Sung Lee, MD, KOREA, REPUBLIC OF Sung Hyun Hwang, MD, KOREA, REPUBLIC OF Dae Keun Suh, MD, PhD, KOREA, REPUBLIC OF Bo Seung Bae, MD, KOREA, REPUBLIC OF
Biomechanics Of Different Surgical Techniques For Posterior Medial Meniscal Root Repair: A Porcine Model ePoster Presentation Nadhaporn Saengpetch, MD, THAILAND Sutip Noowan, Md, THAILAND Chaiyanun Vijittrakarnrung, MD, THAILAND
Good Clinical Results After Combined Arthroscopic Meniscal Allograft Transplantation and Autologous Chondrocyte Implantation Using Chondrospheres ePoster Presentation Rainer Siebold, Prof. Dr. med., GERMANY Johannes Pawelczyk, cand. med., GERMANY
Polyurethane Meniscal Scaffold In Postmeniscectomy Syndrome Presented Good Clinical Results At Minimum 10-Years Of Follow-Up ePoster Presentation Maximiliano Ibañez, MD, SPAIN Raúl Torres-Claramunt, PhD, SPAIN Pablo E. Gelber, MD, PhD, SPAIN Simone Perelli, MD,PhD, SPAIN Daniel Pérez-Prieto, MD, SPAIN Àngel Masferrer-Pino, MD PhD, SPAIN Joan Carles Monllau, MD, PhD, Prof., SPAIN
Etiology of Posterior Meniscus Root Tears: Medial vs. Lateral ePoster Presentation Katrin Karpinski, MD, GERMANY Philipp Forkel, MD, GERMANY Martin Häner, MD, GERMANY Wolf Petersen, MD, Prof, GERMANY
Virtual Reality Simulation is Valuable for Arthroscopic Diagnosis and Meniscectomy: A Transfer Validity Study of 36 Residents ePoster Presentation Alexandre Tronchot, MD PhD, FRANCE Tiphaine Casy, PhD, FRANCE Nicolas Vallee, MD, FRANCE Harold Common, MD, FRANCE Hervé Thomazeau, PR, FRANCE Pierre Jannin, PhD, FRANCE Arnaud Huaulme, PhD, FRANCE
Bidirectional Evaluation for the Lateral Meniscal Extrusion After Repairing Isolated Longitudinal Tear ePoster Presentation Akira Tsujii, MD, PhD, JAPAN Seira Sato, MD, PhD, JAPAN Tomoki Ohori, MD, PhD, JAPAN Tatsuo Mae, MD, PhD, JAPAN Kazutaka Kinugasa, MD, PhD, JAPAN Yasukazu Yonetani, MD, PhD, JAPAN Masayuki Hamada, MD, JAPAN Ken Nakata, MD, PhD, JAPAN
Predictors of Patient-Reported Outcomes After Anterior Cruciate Ligament Reconstruction With Concurrent Treatment of Bucket-Handle Meniscus Tears ePoster Presentation Gregory Perraut, MD, UNITED STATES Rachel E Cherelstein, BS, UNITED STATES Alexandra Galel, MD, UNITED STATES Laura Keeling, MD, UNITED STATES Christopher M Kuenze, PhD, UNITED STATES Andrew Curley, MD, UNITED STATES David X. Wang, MD, UNITED STATES Kaitlin A Malekzadeh, , UNITED STATES Edward S. Chang, MD, UNITED STATES
Comparing the Risk of Iatrogenic Peroneal Nerve Injury in All-inside Lateral Meniscus Repair between Preoperative and Real Arthroscopic Position MRIs ePoster Presentation Chaiwat Chuaychoosakoon, MD, THAILAND Wachiraphan Parinyakhup, MD, THAILAND Tanarat Boonriong, Principal, THAILAND
Biological Augmentation May Play A Role In Obtaining Superior Clinical Outcomes In Meniscal Root Repair With Concomitant Anterior Cruciate Ligament Reconstruction ePoster Presentation Lika Dzidzishvili, MD, PhD, SPAIN Irene Isabel López-Torres, MD, PhD, SPAIN David Sáez, MD, SPAIN Antonio Hernández Diez, MD, SPAIN Emilio Calvo, MD, PhD, MBA, SPAIN
Evolution in the Indication of Surgical Treatment on Degenerative Meniscal Tears In the Last 20 Years ePoster Presentation Alejandro Espejo-Reina, MD, MSc, SPAIN Enrique Sevillano-Perez, MD, SPAIN María Josea Espejo-Reina, MD, SPAIN Maximiano Lombardo-Torre, SPAIN Miguel Verdejo-Parrilla, MD, MSc, SPAIN Alejandro Espejo-Baena, MD, SPAIN
Delaying ACL Reconstruction Increases the Risk of Medial Meniscal Tear ePoster Presentation Julien Erard, MD, FRANCE Nicolas Cance, MD, FRANCE Jobe Shatrov, MD, AUSTRALIA Gaspard Fournier, MD, FRANCE Stanislas Gunst, MD, FRANCE Gianluca Ciolli, MD, ITALY Pasquale Porcelli, MD, ITALY Sebastien Lustig, MD, PhD, Prof., FRANCE Elvire Servien, MD, PhD, Prof., FRANCE

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Increased Mechanical Axis Malalignment Does Not Lead to Worse Outcomes Following Transtibial Meniscus Root Repair

Increased Mechanical Axis Malalignment Does Not Lead to Worse Outcomes Following Transtibial Meniscus Root Repair

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Increased Mechanical Axis Malalignment Does Not Lead to Worse Outcomes Following Transtibial Meniscus Root Repair

Increased Mechanical Axis Malalignment Does Not Lead to Worse Outcomes Following Transtibial Meniscus Root Repair

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