Neural mechanosensitivity findings in patients with adhesive capsulitis

Abstract

BACKGOURND: The pathophysiology of adhesive capsulitis may be associated with increased neural mechanosensitivity in upper limb neurodynamic test. OBJECTIVE: To investigate the findings of neurodynamic assessment in patients with more than four month history of adhesive capsulitis. METHODS: Thirty-five patients with more than four month history of adhesive capsulitis were participated in this study. A physiotherapist performed the Upper Limb Neurodynamic test 1 procedure on the participant’s upper limb. Elbow extension range of motion at the end of the Upper Limb Neurodynamic test 1 was compared with the participant’s elbow extension at the end of Upper Limb Neurodynamic test 1 performed on the opposite upper limb and to elbow extension on the symptomatic side performed with the arm by the side. RESULTS: The intensity of pain in Upper Limb Neurodynamic test 1 increased with lateral flexion of the neck to the unaffected side and eased with lateral flexion to the affected side in all participants. A marked restriction of the elbow passive extension range of motion in Upper Limb Neurodynamic test 1 on the affected side (–54.6±17.8°) compared to the unaffected side was found (–7.3±10.7°) (p < 0.001). CONCLUSIONS: Restriction of elbow passive extension range of motion at the end of the Upper Limb Neurodynamic 1 test reproduced patients’ familiar adhesive capsulitis associated pain and the pain changed with structural differentiation using cervical lateral flexion. Neurodynamic assessment may need to be considered to assess neural mechanosensitivity in patients with adhesive capsulitis.