Publications by authors named "Shinji Sasao"

Purpose: This study evaluated the impact of the Landmark Crater (LC) method on pedicle perforation rates in robot-guided surgery for pediatric scoliosis for each pedicle diameter.

Methods: Seventy-six scoliosis patients underwent robot-assisted posterior spinal fusion. The cohort consisted of 19 male and 57 female patients, with a mean ± standard deviation age of 17.

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Article Synopsis
  • Venous thromboembolism (VTE) is a common complication following spine surgery, particularly in cervical spine procedures, which may carry a higher risk due to severe gait issues.
  • A study analyzed medical data from 341 patients who underwent cervical spine surgery and found that 2.6% developed postoperative VTE.
  • Significant risk factors for VTE included older age, higher postoperative D-dimer levels, and the presence of cardiovascular disease, suggesting that patients with these conditions require closer monitoring after surgery.
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Purpose: We defined sagittal S-line tilt (SSLT) as the tilt of the line connecting the upper instrumented vertebra and the lower instrumented vertebra. This study aimed to: (1) examine the correlation between SSLT and proximal junctional angle (PJA) change values, and (2) determine the cut-off value of SSLT with respect to proximal junctional kyphosis (PJK) occurrence.

Methods: Eighty-six consecutive patients (81 female and 5 male; mean age: 15.

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Article Synopsis
  • The study aimed to assess the impact of using a modified S-line vertebra (MSLV) as the upper instrumented vertebra (UIV) on trunk balance and clinical outcomes in adolescents with idiopathic scoliosis (AIS) type 1C.
  • Twenty-eight female patients aged around 15.4 years were examined, with the MSLV group consisting of 18 patients and a non-MSLV group of 16 patients (either proximal or distal placement).
  • Results showed that the MSLV group had significantly better postoperative coronal balance compared to the non-MSLV group, indicating that using MSLV as UIV can improve postoperative outcomes for these patients.
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Purpose: Preoperative computed tomography (CT)-based navigation is used for cervical pedicle screw (CPS) insertion to mitigate the risk of spinal cord and vertebral artery injury. In vertebrae with osteosclerosis due to degeneration or other factors, however, probing may not proceed easily, with difficulty creating the CPS insertion hole. This study investigated the impact of osteosclerosis on the accuracy of CPS insertion.

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Background: Transient myoclonic involuntary movements, typically referred to as spinal myoclonus (SM), rarely develop in the extremities following neuraxial anesthesia (NA). NA indications in patients with history of SM following NA (SM-NA) are unknown.

Case Presentation: A 33-year-old woman developed SM-NA after elective cesarean section (CS).

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