Table 1.
Chronological changes in EL, VAS, and IKEMS.
| Preoperative | First HAL-SJ (∗∗∗POD 8) | Second HAL-SJ (POD 10) | Third HAL-SJ (POD 17) | At discharge (POD 21) | Following the end of the third HAL-SJ | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| ∗IPO | ∗∗IFO | IPO | IFO | IPO | IFO | 1 month | 3 months | |||
| EL (degrees) | 15 | 10 | 5 | 12 | 3 | 10 | 5 | 4 | 4 | 1 |
| VAS (mm) | 55 | 28 | 4 | 20 | 20 | 32 | 46 | 40 | 18 | 17 |
| IKEMS (kg) | 35.2 | 8.7 | 9.1 | 5.6 | 5.6 | 10.7 | 12.5 | 16.9 | 16.9 | 18.3 |
EL: extension lag; VAS: visual analog scale; IKEMS: isometric knee-extension muscle strength; HAL-SJ: single-joint hybrid assistive limb.
∗IPO: immediately before the intervention.
∗∗IFO: immediately following the intervention.
∗∗∗POD: postoperative day.