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Table 1 Chronological changes in scores during recovery after opening wedge high tibial osteotomy

From: Robotic device-assisted knee extension training during the early postoperative period after opening wedge high tibial osteotomy: a case report

  Preoperative First HAL-SJ (POD 8) Second HAL-SJ (POD 10) Third HAL-SJ (POD 15) Fourth HAL-SJ (POD 17) Fifth HAL-SJ (POD 22) Sixth HAL-SJ (POD 24) At discharge (POD 30) After end of sixth HAL-SJ
IBI IFI IBI IFI IBI IFI IBI IFI IBI IFI IBI IFI 1 month 3 months
EL, degrees 3 6 2 3 6 10 6 5 6 3 8 4 0 4 3 3
VAS, mm 60 49 83 29 23 12 13 12 9 6 21 8 8 6 24 69
IKEMS, kgf 17.6 5.3 5.7 6.6 6.5 7.5 8.6 9.4 9.4 11.0 12.2 13.4 13.2 12.8 18.7 16.6
Active ROM, degrees 10–135 16–124 12–125 16–124 9–120 19–133 13–136 16–138 15–134 10–139 12–139 12–139 11–136 12–144 11–135 12–142
JOA score Total 60 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 55 65 85
Pain on walking 20 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 15 15 25
Pain on ascending or descending stairs 5 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 5 15 20
ROM 25 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 25 25 30
Joint effusion 10 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 10 10 10
  1. Abbreviations: EL Extension lag, VAS Visual analogue scale, IKEMS Isometric knee extension muscle strength, ROM Range of motion, JOA Japanese Orthopaedic Association, POD Postoperative day, HAL-SJ Single-joint hybrid assistive limb device, IBI Immediately before intervention, IFI Immediately after intervention, N/A Not applicable