Effect of Degenerative Spondylolisthesis on the Clinical Outcome of Unilateral Biportal Endoscopy for Lumbar Spinal Stenosis: Study Protocol

Registration Number
NCT06394089
Lead Sponsor
Beijing Friendship Hospital
Brief Summary

A single-center, prospective cohort trial aims to provide stronger evidence regarding the impact of degenerative spondylolisthesis on the clinical outcome of unilateral biportal endoscopy for lumbar spinal stenosis

Detailed Description

Not available

Recruitment & Eligibility

Status
RECRUITING
Sex
All
Target Recruitment
240
Inclusion Criteria
  • Age range: 50-80 years
  • Diagnosis of LSS affecting 1-2 vertebral levels
  • Predominant manifestation of neurogenic intermittent claudication, with ineffective conservative treatment for at least 3 months
  • Presence of lumbar DS of less than grade II and absence of spine instability
  • Willingness to participate in the study and complete follow-up assessments.
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Exclusion Criteria
  • Diagnosis of isthmic lumbar spondylolisthesis or lumbar DS of grade ≥II
  • Evidence of instability at the affected vertebral level (intervertebral angle change exceeding 15° in standing flexion-extension radiographs of the lumbar spine)
  • History of prior surgery at the affected vertebral level
  • Presence of scoliosis with a Cobb angle >20º
  • Presence of other conditions affecting the lumbar spine (infection, tumor, fracture, neurological diseases, and others)
  • Medical disorders that preclude surgical tolerance
  • Participation in other clinical research projects related to the treatment of lumbar spinal stenosis.
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Study & Design

Study Type
OBSERVATIONAL
Study Design
Not specified
Primary Outcome Measures
NameTimeMethod
Oswestry Disability Index (ODI)From enrollment to the end of follow-up at 2 year

0-100%, the higher the score, the more severe the lumbar spine dysfunction

Secondary Outcome Measures
NameTimeMethod
X-rayFrom enrollment to the end of follow-up at 2 year

Progression of lumbar spondylolisthesis, assessed by postoperative lumbar radiography; (2) Measurement of sagittal translation, segmental angulation, and posterior opening based on postoperative standing flexion-extension radiographs

Surgical complicationFrom enrollment to the end of follow-up at 2 year

Any adverse events will be recorded to evaluate the safety of decompression using UBE for LSS with or without DS

Computed tomography (CT) scanFrom enrollment to the end of follow-up at 2 year

Assessment of bone resection area and preservation rate of the facet joint using postoperative computed tomography (CT) scans

Visual analog scale (VAS) score for lower back painFrom enrollment to the end of follow-up at 2 year

0-10, the higher the score, the more severe the pain

Visual analog scale (VAS) score for leg painFrom enrollment to the end of follow-up at 2 year

0-10, the higher the score, the more severe the pain

Magnetic resonance imaging (MRI)From enrollment to the end of follow-up at 2 year

Calculation of the enlargement ratio of the dural sac based on postoperative magnetic resonance imaging (MRI)

Erythrocyte sedimentation rate (ESR)From enrollment to the end of follow-up at 2 year
Operative timeImmediately after the surgery
Postoperative hospital staysImmediately after the discharge
Creatine kinase (CK)From enrollment to the end of follow-up at 2 year
Japanese Orthopaedic Association (JOA) scoreFrom enrollment to the end of follow-up at 2 year

0-29, the higher the score, the better the lumbar spine function

Modified MacNab criteriaFrom enrollment to the end of follow-up at 2 year

According to satisfaction, it is divided into four levels: excellent, good, acceptable, and poorexcellent, good, fair, and poor

Improvement ratio of Visual analog scale (VAS) score for lower back painFrom enrollment to the end of follow-up at 2 year

Improvement ratio= (preoperative VAS-postoperative VAS/preoperative VAS, ranging from 0-100%, the higher the score, the better the improment of symptoms

Intraoperative blood lossImmediately after the surgery
Physical-component summary score of the Medical Outcomes Study 36-Item Short-Form Health SurveyFrom enrollment to the end of follow-up at 2 year

0-100 points, with higher scores indicating better physical health-related quality of life

Improvement ratio of Visual analog scale (VAS) score for leg painFrom enrollment to the end of follow-up at 2 year

Improvement ratio= (preoperative VAS-postoperative VAS/preoperative VAS, ranging from 0-100%, the higher the score, the better the improment of symptoms

Improvement ratio of Japanese Orthopaedic Association (JOA) scoreFrom enrollment to the end of follow-up at 2 year

Improvement ratio= (postoperative JOA-preoperative JOA/preoperative VAS, ranging from 0-100%, the higher the score, the better the improment of spinal function

Improvement ratio of Oswestry Disability Index (ODI)From enrollment to the end of follow-up at 2 year

Improvement ratio= (preoperative ODI-postoperative ODI)/preoperative ODI, ranging from 0-100%, the higher the score, the better the improment of symptoms

Trial Locations

Locations (1)

Beijing Friendship Hospital

🇨🇳

Beijing, Beijing, China

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