2025 ISAKOS Biennial Congress ePoster
Clinical Outcome After Meniscal Repair for Lateral Meniscus Posterior Root Tear Combined With Anterior Cruciate Ligament Reconstruction
Kazuhisa Hatayama, MD, PhD, Maebashi, Gunma JAPAN
Satoshi Nonaka, MD, Maebashi, Gunma JAPAN
Hibiki Kakiage, MD, Maebashi, --お選びください-- JAPAN
JCHO Gunma Central Hospital, MAEBASHI SHI, Gunma, JAPAN
FDA Status Cleared
Summary
All inside suture repair using Knee Scorpion may be preferable to trans-capsular suture repair for lateral meniscus posterior root tear combined with anterior cruciate ligament reconstruction to achieve better postoperative outcomes, particularly in terms of anterior knee stability and prevention of sagittal extrusion progression of the lateral meniscus.
ePosters will be available shortly before Congress
Abstract
Objectives: To investigate the postoperative clinical outcomes after meniscal repair for lateral meniscus posterior root tear (LMPRT) combined with anterior cruciate ligament (ACL) reconstruction.
Methods
From April 2015 to May 2022, 22 out of 322 primary anatomic ACLR cases had a concomitant radial or T-shaped tear of the posterior horn of the lateral meniscus (LM) and underwent meniscal repair for LMPRT in conjunction with primary ACL reconstructions. Seven knees underwent trans-capsular suture (TCS) repair for radial tears or T-shaped tears of LM using all-inside devices or inside-out technique, while 15 knees underwent all-inside suture (AIS) repair using Knee Scorpion device. All patients were followed for more than 2 years. The side-to-side difference (SSD) in anterior tibial translation on stress radiographs at 2 years after surgery was evaluated. Rotational stability was assessed with the pivot-shift test. Coronal and sagittal extrusion on coronal/sagittal MRI before and 2 years after surgery were measured, and the amount of improvement was compared between the groups. All statistical analyses were performed with use of SPSS software (version 21.0; IBM). The Student’s t-test was utilized to compare the SSD in anterior translation and the improvement in coronal and sagittal extrusion of the LM. The Mann-Whitney U test was utilized to compare pivot-shift test results. P < 0.05 was considered significant.
Results
The mean SSDs in anterior translation were 3.7 ± 2.0 mm for the TCS group, 1.3 ±1.7 mm for the AIS group, representing a significant difference (p=0.01). The positive ratio of the pivot-shift test was not significantly different between the groups. The improvement in coronal extrusion in the TCS and AIS group were 0.2 ± 0.6 mm and 0.8 ± 0.9 mm, respectively, with no significant difference. However, the improvement in sagittal extrusion in the TCS and AIS group were -2.0 ± 1.7 mm and 0.1 ± 1.2 mm, respectively. Sagittal extrusion in the TCS group progressed significantly. Six of 7 knees in the TCS group and 3 of 15 knees in the AIS group showed progression of sagittal extrusion more than 1 mm on postoperative MRI.
Conclusions
AIS repair may be preferable to TCS repair for LMPRT combined with ACLR to achieve better postoperative outcomes, particularly in terms of anterior knee stability and prevention of sagittal extrusion progression of the LM.