Multicenter Study of Spontaneous Correction of Sagittal Imbalance After Isolated Decompression Surgery Without Corrective Fusion for Lumbar Spinal Stenosis

What this Trial Is About

This research aims to understand whether isolated decompression surgery can lead to spontaneous correction of sagittal spinal imbalance in patients with degenerative lumbar stenosis. Sagittal imbalance may result from orthopedic issues, nerve compression in the spinal canal, and pain-related functional imbalance. While surgical correction with spine fixation is often needed, some patients show improvement after decompression alone, making this study important to clarify treatment effects. Participants will undergo isolated lumbar decompression surgery, which involves microsurgical relief of pressure on the neural structures of the lumbar spine without fusion or corrective fixation. The decompression can be unilateral, bilateral, or bilateral from a unilateral approach, including endoscopic methods. This procedure targets degenerative changes such as thickened ligaments, joint hypertrophy, bone spurs, and cysts contributing to stenosis. During the study, researchers will measure changes in lumbar balance parameters at 3 and 12 months after surgery, along with assessments of disability, pain, neuropathic symptoms, posture alignment, and the size of the dural sac. Safety will be monitored over an average of 12 months. Participants must follow the clinical protocol and attend scheduled follow-up visits to assess surgical outcomes and spinal alignment changes.

Spontaneous Correction of Sagittal Imbalance After Isolated Lumbar Decompression