OBJECTIVE To evaluate the effectiveness of Pettibon spinal manipulation and anterior headweighting for correct cervical hypolordosis and forward head posture, quantified by measurements taken from pre and post intervention lateral cervical radiographs. METHODS A total of 15 subjects were selected for investigation at random. An initial seated lateral cervical radiograph was taken to evaluate ...

Although the human head is not a sphere, models using spheres have been employed to simplify forward and inverse magnetoencephalographic (MEG) calculations. We compared the normal component of the magnetic field calculated at 61 detectors and the localization accuracy of 5 different spherical models to the results obtained using the finite element method (FEM) in a realistic head model. The sph...

OBJECTIVE To assess head posture using cervical spine X-rays to find out whether forward head posture is related to myofascial pain syndrome (MPS) in neck and shoulder. METHODS Eighty-eight participants who were diagnosed with MPS in neck and shoulder were evaluated in this study. Four parameters (distance among head, cervical spines, and shoulder, and cervical angle) were measured from later...

OBJECTIVES To investigate the effect of different induced head-neck-jaw postures on head-neck relocation error among healthy subjects. METHODS 30 healthy adult male subjects participated in this study. Cervicocephalic kinesthetic sense was measured while standing, habitual sitting, habitual sitting with clenched jaw and habitual sitting with forward head posture during right rotation, left ro...

Sensory feedback from the vestibular system and neck muscle stretch receptors is critical for the regulation of postural control. The postural relationship of the head to the trunk is a major factor determining the integration of sensory feedback and can be interfered with by varying head orientation. This study assessed how 60-s of standing with the head neutral, flexed, or extended impacted p...

normal 0 false false false en-us x-none ar-sa microsoftinternetexplorer4 introduction: a wide range of factors are said to either cause or aggravate temporomandibular dysfunction (tmd).some are however under controversy. one such controversial factor is the forward head position. the aim of this study was to compare head positioning between cases of tmd and normal population. materials and meth...

The topological ordering algorithm sorts nodes of a directed graph such that the order of the tail of each arc is lower than the order of its head. In this paper, we introduce the notion of covering between nodes of a directed graph. Then, we apply the topological orderingalgorithm on graphs containing the covering nodes. We show that there exists a cut set withforward arcs in these...