Effect of proprioceptive neuromuscular facilitation and cranio-cervical flexor training on pain and function in chronic mechanical neck pain: A randomized clinical trial

Abstract

Background: Chronic neck pain is known to be caused by the weakness of the deep neck flexors and disturbances in the mechanoreceptors and the proprioceptors of the cervical spine. Proprioceptive neuromuscular facilitation (PNF) is hypothesized to balance the relative stiffness and weakness of the muscles and activate the mechanoreceptors and proprioceptors. Objective: To investigate PNF techniques and the craniocervical flexor training (CCFT) techniques for pain and function in chronic neck pain. Methods: A randomized clinical trial was conducted on 66 chronic mechanical neck pain patients randomly assigned to either the PNF or CCFT groups using block randomization for a duration of 4 weeks. Numerical Pain Rating Scale (NPRS), Neck disability Index (NDI) and Active cervical range of motion (ACROM) were measured at baseline and after 4 weeks of intervention. Data were analysed using independent t test and MANOVA. Results: The mean difference scores for NPRS and NDI were 2.18 and 15.72 in PNF group and 2.26 and 15.76 in the CCFT groups, respectively. Both the groups showed a change that was statistically significant. Also, the mean differences for the ACROM in all the planes in both the groups were statistically significant. However, the between group changes did not reveal any statistical significance in this study except for the right rotation in the CCFT group (p = 0.01). Conclusions: This study concluded that the PNF treatment is also beneficial to pain and function in treating chronic mechanical neck pain patients as its results stand similar to the CCFT treatment, which is already established to be a reliable tool to treat this condition.