Abstract
M.Tech. (Chiropractic)
Purpose: The trigeminocervical nucleus is found at the junction whereby the sensory input from the trigeminal nerve and the first three cervical spinal nerves overlap. Due to the close proximity of structures within the upper cervical spine and the trigeminocervical nucleus, cervical facet syndrome and its mechanism may have an effect on the trigeminal nerve and its various components, leading to potential disrupted and altered function of this nerve. Of particular interest in this research study is the tactile sensitivity of the nerve. This has been proposed after evidence has suggested that in the presence of spinal dysfunction, altered afferent input to the central nervous system may occur (Haavik-Taylor and Murphy, 2010).
Aim: The aim of this study was to analyse the effect of chiropractic spinal manipulation to the upper cervical spine, with associated neck pain, and the possible resultant change in the tactile sensitivity of the trigeminal nerve distribution.
Method: This was a quantitative single blinded study with random group allocation. 100 participants were assessed according to inclusion and exclusion criteria and randomly divided into group 1 (spinal manipulation group) or group 2 (control group). All participants had tactile sensitivity assessments performed before treatment as well as immediately after treatment followed by 5 and 10 minutes after treatment. All objective readings were taken by a research assistant in a separate room.
Procedure: This study consisted of a once-off treatment whereby participants in group 1 (spinal manipulation group) received chiropractic spinal manipulation performed on restricted segments of the upper cervical spine and participants in group 2 (control group) did not receive treatment. Objective data in the form of Semmes-Weinstein monofilament numerical ratings and two point discrimination distances were conducted in order to note any changes in sensitivity...