Forest plot showing the results of the meta-analysis on the effect of strength exercise on M.quadriceps femoris in people with rheumatoid arthritis and hip/knee osteoarthritis. Forest plot showing the results of the meta-analysis on the effect of strength exercise on M.quadriceps femoris in people with rheumatoid arthritis and hip/knee osteoarthritis. SMD, standardised mean difference. Anne-Kathrin Rausch Osthoff et al. RMD Open 2018;4:e000713 Copyright © BMJ Publishing Group & EULAR. All rights reserved.