• Jonas Bloch Thorlund, Lasse Østengaard, Nathan Cardy, Fiona Wilson, Claus Jørgensen, and Carsten Bogh Juhl.
• Research Unit for Musculoskeletal Function and Physiotherapy, Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, Denmark. Electronic address: jthorlund@health.sdu.dk.
• J Sci Med Sport. 2017 Aug 1; 20 (8): 712-717.

ObjectivesTo investigate the trajectory of patient reported pain and function and knee extensor muscle strength over time in young individuals undergoing arthroscopic meniscal surgery.DesignSystematic review and meta-analysis METHODS: Six databases were searched up to October 13th, 2016.Patients And InterventionPeople aged 30 years or younger undergoing surgery for a meniscal tear.Outcomesand comparator: (1) Self-reported pain and function in patients undergoing meniscal surgery compared to a non-operative control group (2). Knee extensor strength in the leg undergoing surgery compared to a healthy control group or the contra-lateral leg. Methodological quality was assessed using the SIGN 50 guidelines.ResultsNo studies were found on patient reported pain and function. Six studies, including 137 patients were included in the analysis on knee extensor muscle strength. Knee extensor muscle strength was impaired in the injured leg prior to surgery and was still reduced compared with control data up to 12 months after surgery (SMD: -1.16) (95% CI: -1.83; -0.49). All included studies were assessed to have a high risk of bias.ConclusionsNo studies were found comparing the trajectory of self-reported pain and function in patients undergoing arthroscopic surgery compared with non-operative treatments for young patients with meniscal tears. Knee extensor strength seemed to be impaired up to 12 months after surgery in young patients undergoing surgery for meniscal tears. The results of the present study should be interpreted with caution due to a limited number of available studies with high risk of bias including relatively few patients.Copyright © 2017 Sports Medicine Australia. Published by Elsevier Ltd. All rights reserved.

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