Clinical trial Recruiting at 1 site Interventional Ages 10 to 17

Surgery for Adolescent Idiopathic Scoliosis without Spinal Fusion

Official title: Non Fusion Surgery in Adolescent Idiopathic Scoliosis Patients Using the Nemost-AIS System

Run by Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA) · NCT04441411 · Data updated 2026-11-12

This study is testing a new type of surgery for teenagers with scoliosis that doesn't involve fusing the spine, to see if it can correct their curvature while still allowing for growth.

More Adolescent Idiopathic Scoliosis trials

Quick facts

Study typeInterventional
Ages10 Years to 17 Years
SexAll
Enrollment18 (estimated)
SponsorAcademisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA)
Academic / other
Locations1 site (Amsterdam, North Holland)
StatusRecruiting
StartedJune 1, 2020
Main results expectedDecember 31, 2026
Study endsDecember 31, 2028
Registry record updatedJuly 30, 2024
Trial IDNCT04441411 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are adolescents aged 10 and older with idiopathic scoliosis, a primary Cobb angle greater than 30°, and who have experienced curve progression despite non-operative treatment.

Probably not a fit

Patients with non-idiopathic scoliosis or those who have previously undergone spine surgery are unlikely to benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This study evaluates the effectiveness of a minimally invasive non-fusion surgical technique using a double rod bipolar posterior spinal implant to correct the spinal curvature in adolescents with progressive idiopathic scoliosis who have not responded to conservative treatments. The approach aims to address the challenges of traditional spinal fusion surgery, which can lead to complications and limit growth. By utilizing the NEMOST system, the study seeks to provide a solution that allows for continued spinal growth while correcting the deformity.

Why it matters

Potential benefit: If successful, this approach could significantly improve the quality of life for adolescents with scoliosis by reducing the need for traditional spinal fusion and its associated complications.

How similar studies have gone: While the approach of non-fusion surgery is gaining interest, this specific technique using the NEMOST system is relatively novel and has not been extensively tested in prior studies.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Adolescent idiopathic scoliosis ;
* Primary Cobb angle greater than 30°;
* Failed non-operative treatment defined as progression of the curve greater than 5° per year at any time;
* Skeletally immature (Risser grade\* ≤2 and Skeletal age of hand and wrist X-rays ≤14y);
* In girl, either pre-menarchal or post-menarchal by no more than 1 year;
* Age over 10 years;
* Non rigid curve;
* All Lenke type;
* No previous spine surgery.

Exclusion Criteria:

* Non-idiopathic scoliosis: musculoskeletal or neurologic conditions responsible for cause of the spine curvature (i.e. neuromuscular, congenital or syndromic scoliosis);
* History of previous spine surgery;
* Risser sign \>2;
* Disease or deformity likely to affect the stability of the device (i.e. inadequate anatomy of pedicles, trauma or tumor in fixation region, severe osteoporosis, bone destruction or poor bone quality);
* Non-reductible scoliosis;
* Known allergy or intolerance to one of the device material;
* Acute or chronic infections, local or systemic;
* Absence or insufficience of covering tissues;
* Pathological obesity.

Where it's running

  • AmsterdamUMC, location AMC
    Amsterdam, North Holland, Netherlands
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.