Fig. 4

Boxplot of outcome parameter—PRTEE: baseline, 12 weeks and 12-month follow-up, left: orthosis plus eccentric strengthening exercises, right: eccentric strengthening exercises alone. {PT + O: 52.8 (SD: 16.0) to 31.3 (SD: 8.2) [p = .002] to 16.15 (SD: 16.1) [p = .000]; PT: 48.6 (SD: 19.7) to 37.6 (SD: 24.1) [p = .185] to 16.6 (SD: 16.1) [p = .000]}