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. 2020 Jun 15;15:219. doi: 10.1186/s13018-020-01741-3

Fig. 3.

Fig. 3

Forest plots showing the pain score measured by VAS and NRS at 2 to 3, 6, 12, and 24 months. a Comparison VAS and NRS during activity—2–3 months. b Comparison VAS and NRS during activity—6 months. c Comparison VAS and NRS during activity—12 months. d Comparison VAS and NRS during activity—24 months. e Comparison VAS and NRS during rest—12 months