Effectiveness and limitations of decompression alone for lumbar spinal stenosis with degenerative spondylolisthesis

JRCT ID: jRCT1062200049

Registered date:25/01/2021

Basic Information

• Recruitment status: Complete
• Health condition(s) or Problem(s) studied: lumbar spinal stenosis with degenerative spondylolisthesis
• Date of first enrollment: 24/04/2014
• Target sample size: 100
• Study type: Observational
• Intervention(s): treatment (microscopic neural decompression)

Outcome(s)

Primary Outcome

The Japanese Orthopedic Association (JOA) score, a visual analog scale (VAS) for low back pain and leg
symptoms, radiographic evaluation (slipping rate, translational mobility, and angular mobility)

• Secondary Outcome: Complications or any harmful effect, evaluation of reoperation cases

Key inclusion & exclusion criteria

• Age minimum: Not applicable
• Age maximum: Not applicable
• Gender: Both

Include criteria

The presence of lumbar spinal stenosis with a slipping rate 10% or more at L4-5 in the neutral position on a
standing radiograph and microscopic decompression performed at L4-5 without spinal fusion

Exclude criteria

Any previous lumbar surgery, concomitant disc herniation, radiculopathy due to intra- and/or extra-foraminal
stenosis, female patients receiving hormone replacement therapy for postmenopausal conditions and/or who
had an oophorectomy prior to surgery or during the follow-up period.

Related Information

• Primary Sponsor: Miyauchi Akira
• Secondary Sponsor: Saka Shin-ichi