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Background: Impairment of cervical sensory input in patients with neck pain may disturb postural stability. The purpose of present study was to assess the dynamic postural stability of subjects with chronic neck pain compared to a matched control group. Methods: In this case-control study, 22 chronic non-specific neck pain and 22 healthy individuals participated. Postural stability was measured with Techno-body Prokin tilting platform. Subjects performed balance tests under two conditions: eyes open and closed. The parameters for assessment of postural stability were total stability index (TSI), anteroposterior stability index (APSI), mediolateral stability index (MLSI), and trunk deviation which demonstrated total trunk sway in medio-lateral and antero-posterior. We used a separate 2 (group) by 2 (postural difficulty) mixed-design analysis of variance (ANOVA) for analysis of postural performance. Results: There were significant differences between the chronic neck pain and matched control groups in APSI, MLSI, and TSI, p<0.001 in both eyes opened and closed conditions. The trunk deviation was greater for non-specific neck pain in comparison to healthy subjects, p<0.05 in both conditions of eyes open and closed. Conclusion: The results of this study showed that patients with chronic neck pain have poorer postural control than healthy subjects. The findings suggest that clinicians take into account the importance of dynamic postural stability assessment in patients with chronic non-specific neck pain and consider the application of intervention programs for improvement of the dynamic balance.

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BackgroundCarpal tunnel syndrome (CTS) is the most common entrapment neuropathy. A recent systematic review described limited or no evidence about the conservative interventions. Literature has expressed that more proximal area such as the cervical spine is involved in CTS. Therefore, the aim of this study is to examine the effects of combination cervical manual therapy and conventional physical therapy on pain, self-reported function, and electrophysiological findings in the management these patients.MethodsThis study will be a double-blind, parallel-group, randomized, controlled trial (RCT) in which carpal tunnel syndrome subjects randomize to either conventional or combined exercise groups. The conventional group take routine physical therapy treatments, while patients in combine exercise group receive cervical manual therapy plus routine physical therapy treatments. All patients receive 10 sessions of supervised intervention. The outcome measures included visual analogue scale (VAS), Boston Carpal Tunnel and DASH questionnaire, motor distal latencies and sensory nerve conduction velocity of median nerve. They obtain pre- and post-intervention. DiscussionThe findings of this study will provide knowledge about the comparison effectiveness of conventional physical therapy with and without cervical manual therapy on symptom severity, functional status, disability, velocity and latency median nerve in patients with CTS.Trial registrationIranian Registry of Clinical Trials, IRCT20201201049565N1. Registered on 15 December 2020.