This study, conducted by the Department of Orthopedic Surgery at Kyushu University, followed 29 patients aged 10 to 76 years who underwent laminectomy for spinal cord tumors for a period ranging from 7 to 36 years. The results showed that post-laminectomy kyphosis occurred in 8 patients (27.6%) and instability in 7 patients (24.1%). Facet joints were identified as the most significant factor in the development of kyphosis and instability. The study also noted that cervical spine surgeries were associated with higher rates of instability, while thoracolumbar surgeries showed more kyphosis. Intervertebral joint destruction was found to be a significant factor in the development of kyphosis, with 67% of cases showing kyphosis among patients with intervertebral joint destruction. The authors concluded that while there was no significant relationship between kyphosis and instability with the patient's age or the extent of the laminectomy, younger patients tended to have more severe deformities. They emphasized the importance of preserving intervertebral joints to prevent post-laminectomy kyphosis and the need for thorough long-term follow-up, especially in younger patients.This study, conducted by the Department of Orthopedic Surgery at Kyushu University, followed 29 patients aged 10 to 76 years who underwent laminectomy for spinal cord tumors for a period ranging from 7 to 36 years. The results showed that post-laminectomy kyphosis occurred in 8 patients (27.6%) and instability in 7 patients (24.1%). Facet joints were identified as the most significant factor in the development of kyphosis and instability. The study also noted that cervical spine surgeries were associated with higher rates of instability, while thoracolumbar surgeries showed more kyphosis. Intervertebral joint destruction was found to be a significant factor in the development of kyphosis, with 67% of cases showing kyphosis among patients with intervertebral joint destruction. The authors concluded that while there was no significant relationship between kyphosis and instability with the patient's age or the extent of the laminectomy, younger patients tended to have more severe deformities. They emphasized the importance of preserving intervertebral joints to prevent post-laminectomy kyphosis and the need for thorough long-term follow-up, especially in younger patients.