case_images: PMC8405323_01
case_images: (a) Preoperative sagittal T2-weighed magnetic resonance imaging showing bulging discs and canal stenosis at L4-5 and L5-S1. (b, c) Postoperative radiographs after posterior fusion surgery at L4-S1.
case_images: CRIOR2021-1996509.001.jpg
case_images: PMC8405323_01_CRIOR2021-1996509.001.jpg
case_images: fig1
case_images: He underwent instrumented lumbar fusion surgery at L4-S1 after conservative therapy did not result in any improvement (Figure 1).
case_images: (a) Sagittal T2-weighed magnetic resonance imaging 2 years after primary surgery showing posterior spondylolisthesis, bulging disc, and canal stenosis at L3-4. (b, c) Postoperative radiographs after additional posterior fusion surgery at L3-4.
case_images: CRIOR2021-1996509.002.jpg
case_images: PMC8405323_01_CRIOR2021-1996509.002.jpg
case_images: fig2
case_images: Additional fusion surgery at L2-3 was performed for proximal adjacent segment disease (ASD) (Figure 2).
case_images: Exercise therapy using the lumbar-type HAL: (a) sit-to-stand training and (b) squat training.
case_images: CRIOR2021-1996509.003.jpg
case_images: PMC8405323_01_CRIOR2021-1996509.003.jpg
case_images: fig3
case_images: This patient performed 3 sets of 20 sit-to-stand and 20 squat repetitions with adequate rests in between sets (Figure 3).