Hisashi Yoshimoto

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STUDY DESIGN Subaxial sagittal alignment following atlantoaxial (A-A) posterior fusion was investigated retrospectively in patients with A-A subluxation. OBJECTIVES To evaluate the association between A-A fusion angle and postoperative subaxial sagittal alignment and to determine the optimal fusion angle for preservation of physiologic subaxial alignment.(More)
Although the cervical pedicle screw system is considered the most effective instrumentation for posterior cervical spine surgery, reports on clinical application are limited because of the unresolved and inherent risk of neurovascular complications. The purpose of this study is to retrospectively evaluate the accuracy of placement and clinical effectiveness(More)
Cervical pedicle screw is thought to be the most stable instrumentation for reconstructive surgery of the cervical spine. However, because of the unresolved and inherent risk of neurovascular injuries due to screw perforation, it remains not widespread nowadays despite the excellent biomechanical property. Fifty-two consecutive cases having undergone spinal(More)
To conduct a retrospective multicenter study to investigate the accuracy of pedicle screw (PS) placement in the cervical spine by freehand technique and the related complications in various pathological conditions including trauma, rheumatoid arthritis, degenerative conditions and others. 283 patients with 1,065 PSs in the cervical spine who were treated at(More)
STUDY DESIGN A retrospective, age- and sex-matched radiographic study. OBJECTIVES To investigate the spinopelvic alignment in patients with osteoarthosis of the hip (HOA) and those with low back pain (LBP) and to determine the characteristics and differences in both groups. SUMMARY OF BACKGROUND DATA Hip-spine syndrome, first described by Offierski and(More)
Discal cysts are rare lesions that can result in refractory sciatica. Because they are so rare, their exact origin and details of the clinical manifestations are still unknown. The authors report on five men treated for discal cysts. The mean age of the patients at the time of the surgery was 32 years (range 25-38 years). All patients suffered from(More)
AIMS Nationwide surveys to clarify the characteristics and trends of the drinking behavior of Japanese adults were carried out in 2003, 2008, and 2013. METHODS These were periodical cross-sectional surveys. Subjects were chosen through a stratified two-stage random sampling method. The surveys included drinking frequency and amount, ICD-10 alcoholism(More)
STUDY DESIGN A prospective, randomized, single-blinded study. OBJECTIVES To prospectively compare the anesthesia for posterior lumbar spinal fusion between the age- and gender-matched groups with and without preoperative epidural anesthesia with morphine. SUMMARY OF BACKGROUND DATA To reduce the blood loss, hypotensive anesthesia is frequently used in(More)
The authors report the case of an 83-year-old woman with refractory sciatica attributable to isthmic spondylolisthesis at L-5. Her symptoms were successfully improved after posterior lumbar interbody fusion (PLIF) at L5-S1; however, notable swelling in her left leg suddenly developed 2 days postoperatively. Anterior migration of a fragment of bone graft was(More)
The authors report the case of an 87-year-old woman who suffered from T1-2 pyogenic spondylitis resulting in progressive and severe paraplegia. Debridement and anterior manubrium-splitting fusion were difficult because a high-positioned aortic arch was very close to the infectious lesion. Because adequate intravenous antibiotic agents had nearly resolved(More)