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Results of arthroscopic repair of lateral meniscus posterior root tear
Arthrosc Orthop Sports Med 2021;8:38-46
Published online November 1, 2021;  https://doi.org/10.14517/aosm21004
© 2021 Korean Arthroscopy Society and Korean Orthopedic Society for Sports Medicine.

Hyung Seok Park, Dong Hwi Kim, Ba Rom Kim

Department of Orthopaedic Surgery, Chosun University Hospital, Gwangju, Korea
Correspondence to: Dong Hwi Kim, https://orcid.org/0000-0001-7011-8504
Department of Orthopaedic Surgery, Chosun University Hospital, 365 Pilmun-daero, Dong-gu, Gwangju 61453, Korea. Tel: +82-62-220-3147, Fax: +82-62-226-3379, E-mail: oskdh@chosun.ac.kr
Received July 3, 2021; Revised September 10, 2021; Accepted September 17, 2021.
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Background: The purpose of this study was to evaluate the outcome of the lateral meniscal (LM) posterior root repair concomitant anterior cruciate ligament (ACL) reconstruction through second-look arthroscopy or postoperative magnetic resonance imaging (MRI).
Methods: From September 2013 to December 2019, of the 107 patients with ACL rupture and LM tear, except for 80 patients with no posterior root tear, we retrospectively reviewed 20 cases who were followed up for more than 1 year. In all cases, the injured ACL was reconstructed, and the torn LM posterior root was repaired by all-inside or pull-out technique, depending on the tear type. For the assessment of results, we confirmed the healing of the repaired LM posterior root in 14 of the 20 cases using second-look arthroscopy during implant removal, and 8 cases were evaluated for LM posterior root healing and degree of meniscal extrusion based on postoperative MRI. For clinical assessment, the Lysholm score and Tegner activity scale were evaluated preoperatively and postoperatively.
Results: At the last follow-up, the Lysholm score was 92.6, and the Tegner activity scale was 6.0. There were no other complications in all cases. We confirmed that the repaired site was satisfactorily healed by second-look arthroscopy in 14 cases. In addition, the continuity of the repaired site was confirmed in 8 cases with postoperative MRI. The postoperative reduction of extruded LM differed according to age; extruded LM decreased in patients under the age of 20 but increased in those over the age of 20.
Conclusion: The concomitant ACL reconstruction and LM posterior root repair showed high healing rates based on second-look arthroscopic evaluation or postoperative MRI. Further, clinical outcomes showed good results at follow-up. Therefore, LM posterior root repair at the time of ACL reconstruction is considered a good surgical procedure.
Keywords : Lateral meniscus; Tibial meniscus injuries; Arthroscopic surgery; Second-look surgery; All-inside technique
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November 2021, 8 (2)