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Body Rehab of Mercer County - For Lawyers
Attorneys,we treat victims of personal injury in a concise, well-documented manner. We advocate for our patients and the care they need to address their injuries. Our personal injury patient files are jointly reviewed on a weekly basis and communication between our offices is paramount. Furthermore, we provide prompt referral as indicated by the patient's condition/presentation. Motion analysis of cervical vertebrae during whiplash loading [In Process Citation] ABSTRACT: STUDY DESIGN: The motion of each cervical vertebra during simulated rear-end car collisions was analyzed. OBJECTIVES: To clarify the mechanism of zygapophysial joint injury during whiplash loading. SUMMARY OF BACKGROUND DATA: The zygapophysial joint is the suspected origin of neck pain after rear-end car collision. However, no studies have been conducted on the mechanisms of zygapophysial joint injuries. METHODS: Ten healthy male volunteers participated in this study. Subjects sat on a sled that glided backward on inclined rails and crashed into a damper at 4 km/kr. The motion of the cervical spine was recorded using cineradiography. Each vertebra's rotational angle and the instantaneous axes of rotation of the C5-C6 motion segments were quantified. These measurements implemented the template method. RESULTS: There were three distinct patterns of cervical spine motion after impact. In the flexion-extension group, C6 rotated backward before the upper vertebrae in the early phase; thus, the cervical spine showed a flexion position (initial flexion). After C6 reached its maximum rotational angle, C5 was induced to extend. As upper motion segments went into flexion, and the lower segments into extension, the cervical spine took an S-shaped position. In this position, the C5-C6 motion segments showed an open-book motion with an upward-shifted instantaneous axis of rotation. CONCLUSIONS: The cervical spine is forced to move from the lower vertebrae during rear-end collisions. This motion completely differs from normal extension motion and is probably related to the injury mechanism. TITLE: "Whiplash associated disorders: redefining whiplash and its management" by the Quebec Task Force. A critical evaluation. AUTHOR: Freeman MD; Croft AC; Rossignol AM AUTHOR AFFILIATION: Department of Public Health and Preventive Medicine, Oregon Health Sciences University School of Medicine, Portland, USA. SOURCE: Spine 1998 May 1;23(9):1043-9 NLM CIT. ID: 98251449 ABSTRACT: STUDY DESIGN: The two publications of the Quebec Task Force on Whiplash-Associated Disorders were evaluated by the authors of this report for methodologic error and bias. OBJECTIVES: To determine whether the conclusions and recommendations of the Quebec Task Force on Whiplash-Associated Disorders regarding the natural history and epidemiology of whiplash injuries are valid. SUMMARY OF THE BACKGROUND DATA: In 1995, the Quebec Task Force authored a text (published by the Societe de l'Assurance Automobile du Quebec) and a pullout supplement in Spine entitled "Whiplash-Associated Disorders: Redefining Whiplash and its Management." The Quebec Task Force concluded that whiplash injuries result in "temporary discomfort," are "usually self-limited," and have a "favorable prognosis," and that the "pain [resulting from whiplash injuries] is not harmful." METHODS: The authors of the current report reviewed the text and the supplement for methodologic flaws that may have threatened the validity of the conclusions and recommendations of the Quebec Task Force. RESULTS: Five distinct and significant categories of methodologic error were found. They were: selection bias, information bias, confusing and unconventional use of terminology, unsupported conclusions and recommendations, and inappropriate generalizations from the Quebec Cohort Study. CONCLUSION: The validity of the conclusions and recommendations of the Quebec Task Force regarding the natural course and epidemiology of whiplash injuries is questionable. This lack of validity stems from the presence of bias, the use of unconventional terminology, and conclusions that are not concurrent with the literature the Task Force accepted for review. Although the Task Force set out to redefine whiplash and its management, striving for the desirable goal of clarification of the numerous contentious issues surrounding the injury, its publications instead have confused the subject further. TITLE: Changes in cross-sectional area of psoas major muscle in unilateral sciatica caused by disc herniation. AUTHORS: Dangaria TR; Naesh O AUTHOR AFFILIATION: Department of Orthopaedics, Jerudong Park Medical Centre, Brunei Darussalam. SOURCE: Spine 1998 Apr 15;23(8):928-31 CITATION IDS: PMID: 9580961 UI: 98242062 ABSTRACT: STUDY DESIGN: A clinical prospective cohort study of 15 healthy volunteers and 25 patients with unilateral sciatica from single-level disc herniation. OBJECTIVES: To detect any changes in the cross- sectional area of the psoas major muscle in patients with single-level (lateral to mediolateral) disc herniation causing unilateral sciatica. SUMMARY OF BACKGROUND DATA: The exact role of the psoas major muscle in the origin of low back pain and sciatica has not been clarified. METHODS: Fifteen healthy volunteers and 25 patients with unilateral sciatica from single-level disc herniation were subjected to magnetic resonance imaging of the lumbar spine. The cross-section area of the psoas major muscle on either side was recorded, and differences were noted. In patients, the cross-section area of either side was compared with and duration of sciatica was related to changes in the cross- section area. RESULTS: Insignificant variation in the cross-section area of the psoas major was observed in volunteers. In the patient group, significant reduction in the cross-section area of the psoas major was observed at the level and the site of the disc herniation. A significant correlation between cross-section area of the psoas major and ipsilateral continuous sciatica was found. There was no relation between the reduction of the cross-section area and the amount of disc herniation. CONCLUSION: The cross-section area of the psoas major is ipsilaterally decreased in unilateral lumbar disc herniation. The reduction in cross-section area is positively correlated with the duration of continuous sciatica. To join our newsletter list or to comment and/or ask questions, please complete the form below: |
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