Evaluating surgical treatment outcomes for cervical deformity

Prospective Radiographic and Clinical Evaluation of Surgical Treatment for Cervical Deformity: A Multi-Center Study 2.0

Observational International Spine Study Group Foundation · NCT04194996

This study is testing how well different surgeries can help adults with neck deformities, like kyphosis and scoliosis, feel better and improve their function.

Quick facts

Study typeObservational
Enrollment200 (estimated)
Ages18 Years and up
SexAll
SponsorInternational Spine Study Group Foundation Academic / other
Locations16 sites (La Jolla, California and 15 other locations)
Trial IDNCT04194996 on ClinicalTrials.gov

What this trial studies

This multi-center, prospective, non-randomized study aims to evaluate the outcomes of surgical interventions in patients with adult cervical deformity. The study focuses on various types of cervical deformities, including kyphosis and scoliosis, which can lead to significant neurological symptoms and functional disabilities. Participants will be assessed based on specific radiographic criteria and will undergo surgical correction within six months of enrollment. Data will be collected at baseline and follow-up intervals to analyze the effectiveness of the surgical treatments.

Who should consider this trial

Good fit: Ideal candidates are adults aged 18 and older diagnosed with cervical deformity who are planning surgical correction within the next six months.

Not a fit: Patients with active spine tumors, infections, or deformities due to acute trauma will not benefit from this study.

Why it matters

Potential benefit: If successful, this study could improve surgical outcomes and quality of life for patients suffering from cervical deformities.

How similar studies have performed: While there is a lack of high-quality studies specifically addressing cervical deformity, similar approaches in thoracolumbar deformities have shown success.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* ≥18 years old at time of treatment
* Diagnosis of cervical deformity- must meet one or more of the following criteria:

  * C2-C7 sagittal kyphosis (Cobb \> 15 degrees)
  * T1S-CL \> 35o
  * Segmental cervical kyphosis \> 10 degrees between any 2 vertebra between C2-T1 or \> 15 degrees across any 3 vertebra between C2-T1
  * Cervical scoliosis \> 10 degrees (Cobb angle must include end vertebra within the cervical spine)
  * C2-C7 SVA \> 4cm
  * McGregor's slope \> 20 degrees or CBVA \> 25 degrees OR
  * Planned Revision surgery for proximal junctional failure with an anticipated UIV in the cervical spine and an anticipated LIV in the thoracic or lumbar spine.
* Plan for surgical correction of cervical deformity in the next 6 months
* Willing to provide consent and complete study forms at baseline and follow-up intervals
* Upright AP/Lateral entire spine (EOS or 36")
* Upright AP/Lateral C spine ONLY IF C spine is not completely visible on entire spine films
* Flex/Ext lateral C spine. Admin may allow exceptions w/ valid documentation.

Exclusion Criteria:

* Active spine tumor or infection
* Deformity due to acute trauma
* Unwilling to provide consent or to complete study forms
* Prisoner
* Pregnant or immediate plans to get pregnant

Where this trial is running

La Jolla, California and 15 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Cervical DeformityCervical deformityKyphosisScoliosis
Last reviewed 2026-06-09 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.