An isolated contraction of the Obliquus Capitis Inferior and Rectus Capitis Posterior Major demonstrated with Musculoskeletal Ultrasound Imaging

Study design: A quasi-experimental study design Background: The motion of the suboccipital region is controlled by several groups smaller and larger muscle group, these might play a role in development cervicogenic headache. Abnormal tone can lead to abnormal movement patterns resulting altered proprioceptive information from mechanoreceptors this region. Thus, will contribute cervical dysfunction result pain, joint irritation, poor functioning neck. At same time , unilateral contraction muscles could rotation atlas. This significant translation spinal cord toward side within dural sack. homolateral shift then tension possibly headaches. Methods: convenience sample 25 healthy subjects were recruited for study. Musculoskeletal ultrasound imaging was used measure diameter Obliquus Capitis Inferior Rectus Posterior Major immediately following an isometric into head extension rotation. Outcomes: An isometric-induced resulted change obliquus capitis inferior contralateral rectus posterior major and, thus, affect position atlas atlantoaxial joint. Discussion: effect subgroup asymptomatic individuals measured using musculoskeletal imaging. results indicate that both significantly changed with contraction. study's findings support contract isolation thus