Publications by authors named "Naoki Segi"

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Unplanned reoperations due to implant-related complications in older versus non-older patients following adult spinal deformity surgery: A retrospective cohort study using a multi-center database.
Jun Ouchida, Hiroaki Nakashima, Hiroyuki Koshimizu, Sadayuki Ito, Naoki Segi

J Orthop Sci· December 2025

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Impact of postoperative C5 palsy on quality of life in patients with cervical ossification of the posterior longitudinal ligament: a prospective study.
Naoki Segi, Hiroaki Nakashima, Shiro Imagama, Satoru Egawa, Kenichiro Sakai

J Neurosurg Spine· November 2025

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Cost and outcome comparison between intradiscal condoliase injection and surgical treatment for lumbar disc herniation based on real-world data analysis.
Naoki Segi, Hiroaki Nakashima, Takahiro Imaizumi, Sadayuki Ito, Jun Ouchida

Sci Rep· November 2025

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Fine versus Sclerotic Trabecular Bone Remodeling/Restructure: A Refined Radiographic Predictor for Long-Term Segment Stability After Posterior Lumbar Interbody Fusion.
Yasuhiro Nagatani, Naoki Segi, Sadayuki Ito, Jun Ouchida, Ippei Yamauchi

Global Spine J· November 2025

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Postoperative Deterioration of Sagittal Balance in Adult Spinal Deformities: Influence of Preoperative Alignment and Pelvic Incidence.
Yuya Okada, Hiroaki Nakashima, Sadayuki Ito, Naoki Segi, Jun Ouchida

Spine Surg Relat Res· November 2025

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Longitudinal changes in spinal kyphosis, lordosis, and range of motion in aging populations: a 10-year study.
Hiroaki Nakashima, Shunsuke Kanbara, Sadayuki Ito, Naoki Segi, Jun Ouchida

Eur Spine J· October 2025

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Association between the central sensitization inventory score and health-related quality of life in community-dwelling middle-aged and older adults.
Naoki Segi, Hiroaki Nakashima, Ryotaro Oishi, Sadayuki Ito, Jun Ouchida

PLoS One· October 2025

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Recent progress in surgical treatment of cervical spine myelopathy - A narrative review.
Jun Ouchida, Hiroaki Nakashima, Sadayuki Ito, Naoki Segi, Ippei Yamauchi

J Clin Orthop Trauma· September 2025

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Characteristics and Clinical Outcomes of Transition from Conservative Therapy to Surgical Intervention in Older Patients with Cervical Spinal Cord Injury without Major Bone Injury: A Nationwide Retrospective Study.
Noriaki Yokogawa, Takeshi Sasagawa, Hiroyuki Hayashi, Satoru Demura, Hiroaki Nakashima, Naoki Segi

Spine Surg Relat Res· September 2025

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Impact of Nutritional Risk on Complications and Recovery in the Older People: A Geriatric Nutritional Risk Index-Based Study.
Yukihito Ode, Naoki Segi, Sadayuki Ito, Jun Ouchida, Ippei Yamauchi

Spine Surg Relat Res· September 2025

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Comparative analysis of bone regeneration in critical-sized defects using self-assembling peptide hydrogel-178, bone morphogenetic protein-2, and calcium phosphate scaffolds in a rat femur model.
Ippei Yamauchi, Hiroaki Nakashima, Sadayuki Ito, Naoki Segi, Jun Ouchida

Nagoya J Med Sci· August 2025

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Current status of indirect decompression with lateral lumbar interbody fusion.
Hiroaki Nakashima, Sadayuki Ito, Naoki Segi, Jun Ouchida, Ippei Yamauchi

Nagoya J Med Sci· August 2025

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Dietary intake and its association with sarcopenia in older adults: a cross-sectional analysis.
Hiroaki Nakashima, Sadayuki Ito, Naoki Segi, Jun Ouchida, Ippei Yamauchi

Nagoya J Med Sci· August 2025

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Clinical outcomes of posterior lumbar interbody fusion in chronic renal failure patients on hemodialysis.
Hiroaki Nakashima, Sadayuki Ito, Naoki Segi, Jun Ouchida, Ippei Yamauchi

Nagoya J Med Sci· August 2025

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Incidence and risk factors of cerebrospinal fluid leakage related complications after spinal intradural tumor resection.
Hiroaki Nakashima, Kyotaro Ota, Sadayuki Ito, Naoki Segi, Jun Ouchida

Nagoya J Med Sci· August 2025

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Preliminary observations on neuromuscular pathways of the lower extremities: findings from intraoperative nerve root stimulation.
Hiroaki Nakashima, Go Yoshida, Tokumi Kanemura, Sadayuki Ito, Naoki Segi

Nagoya J Med Sci· August 2025

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Comparative analysis of single-stage versus two-stage fusion surgeries for adult spinal deformity: radiographic outcomes, clinical improvements, and complication rates.
Jun Ouchida, Hiroaki Nakashima, Sadayuki Ito, Naoki Segi, Ippei Yamauchi

Eur Spine J· July 2025

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The Utility of a Prediction Model Using Neurological Examination Findings for Diagnosing Degenerative Cervical Myelopathy.
Masahiro Funaba, Hiroaki Nakashima, Lindsay Tetreault, Hidenori Suzuki, Yasutsugu Yukawa, Naoki Segi

J Bone Joint Surg Am· July 2025

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Comparative Analysis of Fusion and Decompression Surgery in Degenerative Cervical Myelopathy: A Multicenter Observational Study of Transcranial Motor Evoked Potentials (Tc-MEP).
Masahiro Funaba, Tsukasa Kanchiku, Go Yoshida, Hiroki Ushirozako, Kenta Kurosu, Naoki Segi

Spine (Phila Pa 1976)· July 2025

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Preoperative undernutrition in older people with adult spinal deformities is associated with worse postoperative sagittal vertical axis.
Jun Ouchida, Hiroaki Nakashima, Sadayuki Ito, Naoki Segi, Tokumi Kanemura

J Orthop Sci· July 2025

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Motor Evoked Potential-Based Spinal Cord Function Assessment in Intraoperative Monitoring Using Machine Learning Model.
Shumpei Date, Koichi Fujiwara, Naoki Segi, Hiroaki Nakajima, Sadayuki Ito

Annu Int Conf IEEE Eng Med Biol Soc· July 2025

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C2 Pelvic Angle as a Predictive Measure for Decompensated Spinopelvic Alignment and Its Impact on Health-Related Quality of Life.
Jun Ouchida, Hiroaki Nakashima, Sadayuki Ito, Naoki Segi, Ippei Yamauchi

Spine (Phila Pa 1976)· June 2025

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Preoperative Low Lumbar Hounsfield Units and Global Alignment Predict Postoperative Mechanical Complications After Adult Spinal Deformity Surgery: A Multicenter Retrospective Study.
Ippei Yamauchi, Hiroaki Nakashima, Sadayuki Ito, Naoki Segi, Jun Ouchida

J Clin Med· June 2025

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Impact of T1 Slope Visibility on Cervical Sagittal Alignment: A Comparative Study of Radiographic Parameters According to T1 Slope Visibility.
Hiroaki Nakashima, Akiyuki Matsumoto, Sadayuki Ito, Naoki Segi, Jun Ouchida

Spine Surg Relat Res· May 2025

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Preoperative Planning for Cervical Pedicle Screw Placement: Identifying Key Morphological Parameters.
Yuya Okada, Hiroaki Nakashima, Sadayuki Ito, Naoki Segi, Jun Ouchida

Spine Surg Relat Res· May 2025

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