NCT01997086

Brief Summary

The purpose of this study is to evaluate the effectiveness of two minimal invasive endoscopic discectomy, PTED and MED, for the treatment of symptomatic lumbar disc herniation.

Trial Health

43
At Risk

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
125

participants targeted

Target at P50-P75 for phase_4

Timeline
Completed

Started Oct 2013

Longer than P75 for phase_4

Geographic Reach
1 country

1 active site

Status
unknown

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

October 1, 2013

Completed
1 month until next milestone

First Submitted

Initial submission to the registry

November 14, 2013

Completed
13 days until next milestone

First Posted

Study publicly available on registry

November 27, 2013

Completed
9.7 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

August 1, 2023

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

August 1, 2023

Completed
Last Updated

April 20, 2017

Status Verified

April 1, 2017

Enrollment Period

9.8 years

First QC Date

November 14, 2013

Last Update Submit

April 19, 2017

Conditions

Outcome Measures

Primary Outcomes (1)

  • Changes in pain and functional status as measured by Oswestry Low Back Disability Questionnaire (Oswestry Disability Index,ODI)

    Baseline, post-operation, 1 month, 3 months, 6 months, and annually thereafter

Secondary Outcomes (2)

  • Changes in health-related quality of life as measured by the EQ-5D,Visual Analog Scale (VAS) and the SF-36 health status questionnaire, and the radiological changes in spine as measured by x-ray, CT or MRI.

    Baseline, post-op 1 month, 3 months, 6 months, and annually thereafter.

  • Histological analysis of surgical lumbar intervertebral disc tissue

    postoperation

Study Arms (2)

Transforaminal discectomy

ACTIVE COMPARATOR

patients diagnosed as lumbar disc herniation undergoing percutaneous transforaminal endoscopic discectomy (PTED).

Procedure: Percutaneous transforaminal endoscopic discectomy (PTED)

Microendoscopic discectomy

ACTIVE COMPARATOR

Patients diagnosed as lumbar disc herniation undergoing microendoscopic discectomy (MED).

Procedure: Microendoscopic discectomy (MED)

Interventions

Percutaneous transforaminal endoscopic discectomy

Transforaminal discectomy

Microendoscopic discectomy

Microendoscopic discectomy

Eligibility Criteria

Age18 Years - 65 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Persistent radicular pain.
  • Signs including evidence of nerve root compression with a positive nerve root tension sign (straight leg raising test or femoral tension sign) or a corresponding sign of neurological deficit (asymmetrical depressed reflex, decreased sensation in a dermatomal distribution, or weakness in a myotomal distribution).
  • An imaging study (MRI or CT) showing LDH at a level and side corresponding to the patients radicular signs or symptoms.

You may not qualify if:

  • \<18 or \>65 years of age
  • Insufficient conservative treatment (6 weeks)
  • Cauda equina syndrome or progressive neurologic deficit requiring urgent surgical intervention
  • Combination with other spinal disorder requiring advanced surgery (such as lumbar stenosis, spondylolisthesis, deformity, fracture, infection, tumor and so on)
  • Equal to or more than two responsible level
  • High-grade migrated disc herniation
  • Previous spinal surgery
  • Possible pregnancy or other comorbid conditions contraindicating surgery

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

the Third Affiliated Hospital of Sun Yat-Sen University

Guangzhou, Guangdong, 510630, China

Location

Related Publications (4)

  • Chen Z, He L, Di J, Huang L, Feng F, Yang B, Xie P, Rong L. Lumbar facet joint osteoarthritis as the underlying reason for persistent low back pain after minimally invasive discectomy. Arch Orthop Trauma Surg. 2023 Jul;143(7):3811-3821. doi: 10.1007/s00402-022-04595-y. Epub 2022 Sep 17.

  • Chen Z, Zhang L, Dong J, Xie P, Liu B, Chen R, Li S, Liu Z, Yang B, Feng F, He L, Yang Y, Pang M, Rong L. Percutaneous Transforaminal Endoscopic Discectomy Versus Microendoscopic Discectomy for Lumbar Disk Herniation: Five-year Results of a Randomized Controlled Trial. Spine (Phila Pa 1976). 2023 Jan 15;48(2):79-88. doi: 10.1097/BRS.0000000000004468. Epub 2022 Sep 7.

  • Chen Z, He L, Huang L, Liu Z, Dong J, Liu B, Chen R, Zhang L, Xie P, Rong L. Risk Factors for Poor Outcomes Following Minimally Invasive Discectomy: A Post Hoc Subgroup Analysis of 2-Year Follow-up Prospective Data. Neurospine. 2022 Mar;19(1):224-235. doi: 10.14245/ns.2143084.542. Epub 2022 Mar 31.

  • Chen Z, Zhang L, Dong J, Xie P, Liu B, Wang Q, Chen R, Feng F, Yang B, Shu T, Li S, Yang Y, He L, Pang M, Rong L. Percutaneous transforaminal endoscopic discectomy compared with microendoscopic discectomy for lumbar disc herniation: 1-year results of an ongoing randomized controlled trial. J Neurosurg Spine. 2018 Mar;28(3):300-310. doi: 10.3171/2017.7.SPINE161434. Epub 2018 Jan 5.

MeSH Terms

Conditions

Intervertebral Disc Displacement

Condition Hierarchy (Ancestors)

Spinal DiseasesBone DiseasesMusculoskeletal DiseasesHerniaPathological Conditions, AnatomicalPathological Conditions, Signs and Symptoms

Study Officials

  • Limin Rong, M.D.

    Third Affiliated Hospital, Sun Yat-Sen University

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
phase 4
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
OUTCOMES ASSESSOR
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Prof., M.D.

Study Record Dates

First Submitted

November 14, 2013

First Posted

November 27, 2013

Study Start

October 1, 2013

Primary Completion

August 1, 2023

Study Completion

August 1, 2023

Last Updated

April 20, 2017

Record last verified: 2017-04

Locations