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A prospective randomized trial of cervical collar use after anterior cervical discectomy and fusion using ROI-C

A Prospective Randomized Controlled Trial Evaluating the Necessity of Postoperative Cervical Collar Use After Anterior Cervical Fusion Using ROI-C, With Early Postoperative Neck Disability Index as the Primary Outcome - ROI-C Collar Trial

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
JPRN
Registry ID
JPRN-UMIN000061575
Enrollment
56
Registered
2026-05-14
Start date
2026-05-14
Completion date
Unknown
Last updated
2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Degenerative cervical myelopathy and/or radiculopathy (primarily including cervical spondylotic radiculopathy, cervical spondylotic amyotrophy, cervical spondylotic myelopathy, cervical ossification of the posterior longitudinal ligament, and cervical disc herniation).

Interventions

Group A (cervical collar group): After one- or two-level ACDF using ROI-C, patients will wear a standard Philadelphia cervical collar for 6 weeks postoperatively. ROI-C manufactured by Highridge Medic

Sponsors

Japan Community Healthcare Organization Osaka Hospital
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Patients scheduled to undergo elective anterior cervical discectomy and fusion (ACDF) using ROI-C at our institution 2. Age >=20 years 3. Patients with one- or two-level degenerative cervical myelopathy and/or cervical radiculopathy (mainly cervical spondylotic radiculopathy, cervical spondylotic amyotrophy, cervical spondylotic myelopathy, ossification of the posterior longitudinal ligament, cervical disc herniation, etc.) who are deemed suitable for anterior cervical fusion 4. Patients who have provided written informed consent

Exclusion criteria

Exclusion criteria: 1. Revision surgery cases 2. Patients whose primary pathology is non-degenerative disease, such as infection, tumor, or trauma 3. Fusion involving three or more levels 4. Patients judged unsuitable for study participation by the operating surgeon because of poor bone quality or other clinical reasons

Design outcomes

Primary

MeasureTime frame
The Neck Disability Index (NDI) at 6 weeks after anterior cervical fusion using ROI-C will be compared between the cervical collar group and the non-collar group. A standard Philadelphia cervical collar will be used for postoperative immobilization. The NDI is scored on a scale from 0 to 50, with higher scores indicating greater neck-related functional disability.

Secondary

MeasureTime frame
1. Changes in the Neck Disability Index (NDI) preoperatively and at 2 weeks, 6 weeks, 3 months, 6 months, and 12 months postoperatively 2. Neck pain visual analog scale (VAS; average pain during the previous 7 days, 0-100 mm) measured preoperatively and at 2 weeks, 6 weeks, 3 months, 6 months, and 12 months postoperatively 3. Japanese Orthopaedic Association (JOA) score, Japanese Orthopaedic Association Cervical Myelopathy Evaluation Questionnaire (JOACMEQ), EQ-5D, SF-8, and patient satisfaction measured preoperatively and at 3 months, 6 months, and 12 months postoperatively 4. Radiographic parameters including C2-7 lordotic angle, T1 slope, C2-7 sagittal vertical axis (C2-7 SVA), and C2-7 range of motion (C2-7 ROM) 5. Cage subsidence (change in intervertebral height from immediately after surgery to 3 and 6 months postoperatively) 6. Fusion status at 12 months evaluated using plain radiographs and/or computed tomography 7. Wound findings and wound-related complications, including surgical site infection (SSI), hematoma, seroma, wound dehiscence, and reoperation 8. Dysphagia, hoarseness, collar-related skin problems (redness, pressure marks, pressure ulcer), collar-related discomfort, and other adverse events

Countries

Japan

Contacts

Public ContactShota Takenaka

Japan Community Healthcare Organization Osaka Hospital Department of orthopaedic surgery

show@yb3.so-net.ne.jp06-6441-5451

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026