Mechanical symptoms as an indication for knee arthroscopy in patients with degenerative meniscus tear: a prospective cohort study  R. Sihvonen, M. Englund, A. Turkiewicz, T.L.N. Järvinen  Osteoarthritis and Cartilage  Volume 24, Issue 8, Pages 1367-1375 (August 2016) DOI: 10.1016/j.joca.2016.03.013 Copyright © 2016 The Authors Terms and Conditions

Fig. 1 Study flow chart. Flow chart of study participants in the cohort. Osteoarthritis and Cartilage 2016 24, 1367-1375DOI: (10.1016/j.joca.2016.03.013) Copyright © 2016 The Authors Terms and Conditions

Fig. 2 The pre- and post-operative WOMET scores. The pre- and post-operative WOMET score for patients with complete data, by pre-operative mechanical symptoms status. Each line represents an individual trajectory. Osteoarthritis and Cartilage 2016 24, 1367-1375DOI: (10.1016/j.joca.2016.03.013) Copyright © 2016 The Authors Terms and Conditions

Fig. 3 Intra-individual fluctuation in the presence of mechanical symptoms during 12-month follow-up. The presence of mechanical symptoms was elicited preoperatively and then at 2, 6 and 12 months postoperatively for the subgroup 339 patients with complete data. Of the 221 patients reporting preoperative mechanical symptoms, 74 (33%) were symptom-free for the entire 12-month follow-up. Intra-individual fluctuation was observed during the follow-up period, particularly among the patients with preoperative mechanical symptoms but also among those with no preoperative mechanical symptoms. A green symbol denotes no mechanical symptoms and red denotes mechanical symptoms at the time of follow-up. Osteoarthritis and Cartilage 2016 24, 1367-1375DOI: (10.1016/j.joca.2016.03.013) Copyright © 2016 The Authors Terms and Conditions