Observational study of incomplete cervical spinal cord injury without instability

IN-TWIN: Traumatic Incomplete Tetraplegia Without Instability: a Prospective Multicenter Feasibility Study of Outcomes and Prognosis

Observational AO Foundation, AO Spine · NCT05653206

This study is looking to see how well different tests can measure recovery in adults with certain types of cervical spinal cord injuries over a few months.

Quick facts

Study typeObservational
Enrollment50 (estimated)
Ages18 Years to 80 Years
SexAll
SponsorAO Foundation, AO Spine Academic / other
Locations10 sites (San Francisco, California and 9 other locations)
Trial IDNCT05653206 on ClinicalTrials.gov

What this trial studies

This multicenter, international observational study aims to enroll 50 adult patients with acute traumatic cervical spinal cord injury (SCI) classified as ISNCSCI AIS Grade D or with sensory deficits only. Participants will undergo a series of core and optional outcome assessments to evaluate neurological impairment and functional outcomes over a follow-up period of 3 and 6 months. Data collected will include demographic information, injury details, treatment specifics, and various assessments of neurological status, gait, balance, and upper extremity function. The study seeks to inform the feasibility of these assessments in capturing the complexities of cervical SCI.

Who should consider this trial

Good fit: Ideal candidates are adults aged 18-80 with acute traumatic cervical SCI and specific neurological classifications.

Not a fit: Patients with nontraumatic SCI or those with severe systemic diseases or conditions that could affect assessment accuracy may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could enhance the understanding of neurological impairments in cervical SCI patients and improve outcome assessments.

How similar studies have performed: While similar observational studies have been conducted, this specific approach to assessing incomplete cervical SCI without instability is relatively novel.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Age 18-80 years, inclusive
* Diagnosis of acute traumatic cervical SCI with ISNCSCI AIS Grade D or sensory deficits only within 48 hours post injury
* Cervical neurological level of injury (C2-C8)
* MRI, using any imaging protocols (conventional, multiparametric, or quantitative), taken according to standard of care
* Presence of spinal cord compression on the MRI
* Absence of biomechanical instability to the extent that would mandate stabilization surgery by the treating surgeon
* Ability to provide informed consent according to the IRB/EC defined and approved procedures

Exclusion Criteria:

* Nontraumatic SCI
* Concomitant traumatic brain injury or polytrauma that could preclude accurate or reliable assessments of the outcome assessments
* Uncontrolled severe systemic diseases, preexisting neurological, musculoskeletal, or general medical conditions which could preclude accurate assessments or FUs
* Individuals unable to undergo MRI

Where this trial is running

San Francisco, California and 9 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 Spinal Cord Injury
Last reviewed 2026-06-13 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.