Koji Tamai - Publications

Response to the letter to the editor: Risk factors for cage subsidence following anterior-posterior spinal fixation in osteoporotic vertebral fractures: a multicenter retrospective study.

Journal: Asian spine journal

Published: August 10, 2026

Two-year cost-effectiveness analysis of alternate-level instrumentation in open-door cervical laminoplasty: secondary analysis of a randomized controlled trial.

Journal: The spine journal : official journal of the North American Spine Society

Published: May 08, 2026

Response to Letter-to-the-Editor regarding "Risk Factors for Early 3-Month Postoperative Mortality in Metastatic Spinal Tumor Surgery: A JASA Multicenter Prospective Study".

Journal: Spine

Published: March 13, 2026

Does pretreatment Pfirrmann grade modify response to intradiscal condoliase injection for lumbar disc herniation?

Journal: Journal of orthopaedic science : official journal of the Japanese Orthopaedic Association

Published: March 05, 2026

A regression-based equation for postoperative spontaneous correction of the unfused proximal thoracic curve in lenke types 1 and 2 adolescent idiopathic scoliosis.

Journal: European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society

Published: March 01, 2026

Response to the Letter to the Editor Regarding: "Predicting Postoperative Neurological Outcomes in Metastatic Spinal Tumor Surgery Using Machine Learning".

Journal: Spine

Published: February 24, 2026

Lifestyle factors, including physical activity status, associated with fragility fractures and falls: a cross-sectional study.

Journal: BMC geriatrics

Published: December 31, 2025

Can Preoperative Nutritional Status be one of the Parameters Evaluating Biological Age for Elderly Patients Undergoing Spinal Surgery? A Propensity Score-matched Analysis.

Journal: Spine

Published: December 19, 2025

Canadian Spine Society: 25th Annual Scientific Conference, February 25 to 28, 2025, Fairmont Le Manoir Richelieu, La Malbaie, Charlevoix, Que., Canada.

Journal: Canadian journal of surgery. Journal canadien de chirurgie

Published: December 12, 2025

Extent of intramedullary short tau inversion recovery signal change predicts traumatic cervical spinal cord injury outcomes in surgically treated older adults: a multicenter study in Japan.

Journal: Asian spine journal

Published: November 28, 2025

SPINE20 recommendations 2025: Sustainable spine care for all.

Journal: Brain & spine

Published: November 21, 2025

Impact of symptom duration on the effectiveness of intradiscal condoliase injection for lumbar disc herniation: A multicenter retrospective study.

Journal: Journal of orthopaedic science : official journal of the Japanese Orthopaedic Association

Published: November 11, 2025