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Enrolling by Invitation

NCT Number: NCT06075966

The Study of INTRA Spine Non Fusion Technique in the Treatment of Lumbar Degenerative Disease

Lumbar degenerative diseases such as lumbar disc herniation (LDH) and lumbar spinal stenosis (LSSS) are common and frequently encountered in orthopaedics. With the acceleration of the aging process of society, their incidence rate increases year by year. At present, conservative treatment is the preferred choice for this type of disease, and surgical treatment is feasible in cases where conservative treatment is ineffective. The main surgical methods include simple laminectomy and nucleus pulposus removal, intervertebral fusion and internal fixation, intervertebral disc replacement, and non fusion surgery. Simple nucleus pulposus removal surgery has drawbacks such as loss of intervertebral height and foramen height, which can affect spinal stability; Intervertebral fusion and internal fixation surgery has the problem of accelerating adjacent segment degeneration; The current therapeutic effect of lumbar disc replacement is not yet clear, and the technology is not yet mature. In response to the shortcomings of the above surgical methods, the advancement of science and technology has driven the development of spinal surgery, and a new surgical concept has emerged - spinal non fusion fixation technology. The INTRA-Spine dynamic stability system between vertebral lamina is one of the non fusion technologies of the spine. The core concept of this technology is to provide dynamic fixation on the basis of sufficient decompression of nerves, with the rotation center located between the vertebral lamina, which is closer to the normal movement center of the lumbar spine. It simulates the normal physiological structure of the lumbar spine with minimal damage and trauma, and maximizes the preservation of surgical segment mobility while maintaining spinal stability, Reducing stress concentration in adjacent segments caused by local fusion, thereby reducing the acceleration of adjacent segment degeneration, theoretically has good clinical and imaging efficacy.

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Key information

Conditions

Lumbar Degenerative Disease

Age range

18 year–85 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Hao-Xuan Zhang, Jinan, Shandong, China

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About this study

Retrospective analysis of patients admitted to the Department of Orthopedic and Spinal Surgery of our hospital who underwent the INTRA Spine dynamic stabilization system and lumbar fusion technology for the treatment of lumbar degenerative diseases. General, clinical, and imaging data were collected before and 7 days, 6 months, and 12 months after surgery. The general information of the patient includes gender, age, course of disease, conservative treatment time, surgical time, nail/implant placement time, bleeding volume, and length of hospital stay; The clinical treatment effect was evaluated using the visual analogue VAS score for low back and leg pain, the Japanese Orthopedic Association's JOA score for evaluation of treatment, and the Oswestry Dysfunction Index questionnaire ODI score; The imaging data includes measuring the lateral position of the surgical segment and adjacent segments through lumbar lateral X-ray films, the Cobb angle, flexion and extension range of motion (ROM), intervertebral disc height, and intervertebral foramen height in the over extension and over flexion positions. The optimal measurement angle value is used, and each measurement data is measured three times and its mean is taken. Perform analysis of variance (intra group follow-up time) and t-test (inter group) on the obtained data using statistical software SPSS; Statistics and analysis of clinical efficacy and imaging manifestations.This clinical study has a funding of 50000 RMB.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • The patient's clinical manifestations, physical examination, and imaging data all support the diagnosis of degenerative lumbar spondylosis
  • Those who have undergone strict and formal conservative treatment for at least 3 months before surgery and have no significant improvement in symptoms
  • Preoperative imaging examination showed single responsible segment protrusion or protrusion leading to segment stenosis
  • Surgeries are performed by the same chief surgeon.

Exclusion criteria

  • Lumbar instability, lumbar spondylolisthesis above grade II
  • Patients with severe osteoporosis, tuberculosis, or tumors
  • Systemic diseases that affect surgical treatment and medication, such as heart disease, liver disease, and kidney disease
  • Patients with mental illness, poor compliance, and inability to cooperate in completing follow-up

Treatment and study plan

Non-fusion group

Other

Patients who have undergone the INTRA-Spine dynamic stabilization system insertion surgery for lumbar spondylosis and have complete follow-up data and meet the standards completed at the First Affiliated Hospital of Shandong First Medical University.

Fusion group

Other

Patients who have undergone lumbar spine fusion surgery due to lumbar spondylosis and meet the standards and have complete follow-up data completed at the First Affiliated Hospital of Shandong First Medical University

Primary outcomes

  1. VAS

    Time frame: 2 Years

    The visual analog scale (VAS) is used for pain assessment. It is widely used in clinical practice in China, and the basic method is to use a vernier ruler with a length of about 10cm, marked with 10 scales on one side, with both ends marked as "0" and "10" respectively. A score of 0 indicates painlessness, and a score of 10 represents the most severe pain that cannot be tolerated.

  2. JOA

    Time frame: 2 Years

    The Japanese Orthopaedic Association Scores (JOA) is a neurological function scoring system recommended by the Japanese Orthopaedic Association, which includes four parts: upper limb motor function, lower limb motor function, sensory and bladder function, with a total score of 29 points. The lower the score, the more severe the neurological dysfunction.

  3. Cobb angle of surgical space and adjacent space in neutral position, over extension and over flexion position

    Time frame: 2 Years

    Cobb angle of surgical space and adjacent space in neutral position, over extension and over flexion position

Secondary outcomes

  1. ROM,range of motion

    Time frame: 2 Years

    range of motion

  2. posterior disc height, PDH

    Time frame: 2 years

    posterior disc height

  3. foraminal height ,FH

    Time frame: 2 years

    foraminal height

Sponsors and collaborators

Lead sponsor

Qianfoshan Hospital

Other

Registry information

Important dates

Study start
2020
Primary completion
2026
Study completion
2026
First posted
Oct 10, 2023
Registry last updated
Jan 29, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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