Rotation

Publication Title: 
Journal of Manipulative and Physiological Therapeutics

BACKGROUND: There is epidemiologic evidence that chiropractors are a high-risk group for low-back disorders. However, to date there are no known biomechanical studies to determine whether their workstations may be a contributing factor. OBJECTIVE: To investigate whether chiropractors' workstation table height or the tasks they perform make them susceptible to low-back strain. As well as investigating low-back strain, a screening was performed to determine whether chiropractors' upper extremities were at risk for undue strain as workstation table height was varied.

Author(s): 
Lorme, Kenneth J.
Naqvi, Syed A.
Publication Title: 
Journal of Manipulative and Physiological Therapeutics

OBJECTIVE: To investigate the use of electromagnetic tracking technology for measurement of passive cervical range of motion (ROM). DESIGN: Passive cervical ranges of motion from one extreme to the other were measured in 3 planes (transverse, frontal, and sagittal) by using an electromagnetic tracking system (ETS), the cervical range of motion device (CROM), and visual estimation (VE) with 2 blinded examiners, using a repeated measures design. SETTING: Swinburne University of Technology, Australia.

Author(s): 
Morphett, Adrian Lindsay
Crawford, Colin M.
Lee, Don
Publication Title: 
Journal of Manipulative and Physiological Therapeutics

OBJECTIVE: To discuss a case of neck-tongue syndrome (NTS) affecting a dancer/figure skater, review literature summarizing the pathogenesis and treatment, and offer new categorization of neck-tongue syndrome. CLINICAL FEATURES: A 24-year-old female dancer/skater sought treatment for recurrent episodes of right-sided upper neck pain with associated ipsilateral numbness of her tongue following brisk active rotation. Radiographs revealed a narrowing of the left para-odontoid space.

Author(s): 
Borody, Cameron
Publication Title: 
Journal of Manipulative and Physiological Therapeutics

BACKGROUND: One use of the anteroposterior lumbar radiograph is to determine axial (y-axis) rotation of the lumbar vertebrae. Rotation might be an element of interest to clinicians seeking to evaluate vertebral positioning. OBJECTIVES: Correlate and quantify movements of the projected pedicles relative to the projected vertebral body during axial rotation and determine if vertebral asymmetry and changes in object film distance affect these movements.

Author(s): 
Coleman, Roger R.
Thomas, I. Walker
Publication Title: 
Journal of Manipulative and Physiological Therapeutics

OBJECTIVE: To determine whether the presence of posterior ponticles markedly increases by 30% or more, the incidence of major rotational stenosis of vertebral arteries. METHODS: Doppler ultrasound studies were performed in 3 private chiropractic clinics and in the radiology department of a public hospital, and magnetic resonance angiography (MRA) studies were made in the latter location. Thirty-two chiropractic patients had Doppler velocimetery, and 16 of these patients had MRA scanning.

Author(s): 
Haynes, Michael J.
Cala, Lesley A.
Melsom, Alison
Mastaglia, Frank L.
Milne, Nicholas
McGeachie, John K.
Publication Title: 
Journal of Orofacial Pain

AIMS: To determine the reliability and the validity of visual leg measurements used in dental kinesiology, which suggests that a masticatory dysfunction, such as occurs in temporomandibular disorders (TMD), can influence the length and the internal rotation of lower limbs. METHODS: The leg-length inequality test and the internal foot-rotation test were performed independently by 3 different examiners on 41 subjects who were also screened for TMD. Data were analyzed by means of kappa statistics and by calculation of sensitivity and specificity values.

Author(s): 
Farella, Mauro
Michelotti, Ambra
Pellegrino, Gioacchino
Giani, Umberto
Martina, Roberto
Publication Title: 
Computer Methods and Programs in Biomedicine

This study presents a new method for measuring axial rotation of vertebra. Anatomical landmarks of the vertebral body were first recognized in X-ray film. By employing appropriate geometrical relationships, vertebral body shape parameters and a computer iteration method, the rotation angle of vertebra on the transverse plane can rapidly be obtained. A cadaver lumbar spine axial rotation-fixation device was designed to confirm the accuracy of the proposed methodology. Rotation angles on CT images were adopted as the golden standard and compared with analytical results based on X-ray films.

Author(s): 
Chi, Wei-Min
Cheng, Ching-Wei
Yeh, Wei-Cheng
Chuang, Shih-Chang
Chang, Ti-Sheng
Chen, Jian-Horng
Publication Title: 
Journal of Manipulative and Physiological Therapeutics

OBJECTIVE: The objective of this study was to develop a measurement method that could be implemented in chiropractic for the evaluation of angular and translational intervertebral motion of the cervical spine. METHODS: Flexion-extension radiographs were digitized with a scanner at a ratio of 1:1 and imported into a software, allowing segmental motion measurements.

Author(s): 
Piché, Mathieu
Benoît, Pierre
Lambert, Julie
Barrette, Virginie
Grondin, Emmanuelle
Martel, Julie
Paré, Amélie
Cardin, André
Publication Title: 
Frontiers of Neurology and Neuroscience

A history of a minor precipitating event is frequently elicited in patients with a spontaneous dissection of the carotid or vertebral artery. Other precipitating events associated with hyperextension or rotation of the neck include practicing yoga, painting a ceiling, coughing, vomiting, sneezing, the receipt of anesthesia, and the act of resuscitation. Chiropractic manipulation of the neck has been associated with carotid artery dissection and, particularly, vertebral artery dissection.

Author(s): 
Caso, Valeria
Paciaroni, Maurizio
Bogousslavsky, Julien
Publication Title: 
Journal of Manipulative and Physiological Therapeutics

OBJECTIVE: The purpose of this study was to perform an interexaminer reliability evaluation of the prone leg length analysis procedure. METHODS: Two chiropractors each examined a series of 45 patients with a history of low back pain. Patients were in the prone position, with the knees in both extended and flexed positions, and with the head rotated right and left. The clinicians were asked to determine the side of the short leg with knees extended and if a change in leg length occurred with head rotation or when the knees were flexed.

Author(s): 
Schneider, Michael
Homonai, Robert
Moreland, Brian
DeLitto, Anthony

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