Effectiveness of Adjustable Cervical Orthoses and Modular Cervical Thoracic Orthoses in Restricting Neck Motion: A Comparative In vivo Biomechanical Study.
Spine (Phila Pa 1976) 2015;
40:E1046-51. [PMID:
26076435 DOI:
10.1097/brs.0000000000001013]
[Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN
In vivo biomechanical study.
OBJECTIVE
To compare the effectiveness of adjustable cervical orthoses (COs) and modular cervical thoracic orthoses (CTOs) with standard devices in restricting neck motion in all 3 anatomical planes.
SUMMARY OF BACKGROUND DATA
No literature is available regarding the effectiveness of adjustable COs and modular CTOs in restricting neck motion, and existing in vivo evaluation methodologies lack consistency and objectivity.
METHODS
The effectiveness of adjustable COs (Vista collar and Vista multipost collar) and modular CTOs (Vista TS, Vista TS with multipost, and Vista TS4 with multipost) in comparison with standard devices (Aspen collar [AC] and Aspen cervical thoracic orthosis) in restricting neck motion across 3 anatomical planes was studied in vivo in 27 healthy participants across prescribed loading levels ranging from 0.5 to 2.0 N·m. Neck range of motion allowed was compared between devices using Tukey post hoc test. The compliance of devices in restricting flexion and extension was obtained via a linear regression model.
RESULTS
When compared with modular CTOs, Aspen CTO was significantly more effective at motion restriction in both sagittal and frontal planes under loading level higher than 1.5 N·m. Modular CTOs outperformed adjustable COs in most of the cases but were fairly comparable with the standard CO (i.e., AC). Adjustable COs were just as effective as standard COs. The compliances of devices in restricting neck flexion ranked in ascending order were 0.83 (Aspen CTO), 1.53 (Vista TS with multipost), 1.60 (Vista TS4 with multipost), 1.77 (Vista multipost collar), 1.78 (AC), 1.99 (Vista TS), and 2.43 (Vista Collar) degrees per N·m.
CONCLUSION
Overall, modular CTOs had poorer performance in neck restriction than their standard counterpart (ACTO), whereas adjustable COs showed overall comparable performance to their standard counterpart (AC). The outcomes may assist clinicians in selecting appropriate devices.
LEVEL OF EVIDENCE
N/A.
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