Characteristics of sagittal spinopelvic alignment changes after symptom relief following simple lumbar decompression

다국어 초록 (Multilingual Abstract)

Background
Sagittal spinopelvic alignment (SSPA) parameters are essential for the diagnosis of adult spinal deformities (ASD) and their progression. Certain clinical symptoms that occur in patients with lumbar spinal stenosis (LSS) and herniated nucleus pulposus (HNP) may distort the SSPA and mimic ASD.

Objective
To differentiate SSPA in symptomatic patients from asymptomatic patients within 10 minutes in the standing position.

Methods
This retrospective cohort study evaluated changes in SSPA following simple lumbar decompression surgery in patients with LSS and HNP. Relative sagittal alignment (RSA), relative pelvic version, relative lumbar lordosis (RLL), lordosis distribution index (LDI), global alignment, and proportion (GAP) values were calculated using the conventional Schwab classification method. First, the pre- and postoperative SSPA parameters were compared. Second, patients were sub-grouped into symptomatic within 10 minutes of standing (SP group) and other symptoms of LSS and HNP as controls. Changes in SSPA parameters after symptom relief following simple lumbar decompression surgery were compared between the two groups.

Results
Overall, all SSPA parameters improved following surgery. However, after subgrouping, patients in the control group did not show significant SSPA alterations, except for LDI, whereas patients in the SP group significantly improved in terms of their RSA, RLL, LDI, and GAP values following symptom relief after surgery.

Conclusion
Patients with pain on standing within 10 minutes showed significant correction in RSA, RLL, and GAP values following simple lumbar decompression. Therefore, it is important to observe such clinical symptoms to avoid misdiagnosis of ASD

목차 (Table of Contents)

• Abstract
• Introduction 1
• Methods 2
• Study design and data source 2
• Participants 2
• Subgroups 3
• Measurements 3
• Statistics 4
• Results 4
• Patient demographics and subgroups 4
• Comparison of pre- and postoperative SSPA following simple lumbar decompression 5
• Comparison of changes in SSPA parameters between the SP and SN groups while standing 5
• Discussion 6
• Limitation 8
• Conclusion 9
• References 9