OBJECTIVE To discuss the case of a patient who received upper cervical chiropractic care after trauma-induced arcual kyphosis in the cervical spine. A practical application of conservative management for posttrauma cervical spine injury in the private office setting is described. CLINICAL FEATURES A 17-year-old female patient suffered an unstable C3/C4 motor segment after a lateral-impact mot...

Each year, between 1.6x10(6) and 3.8x10(6) concussions are sustained by athletes playing sports, with football having the highest incidence. The high number of concussions in football provides a unique opportunity to collect biomechanical data to characterize mild traumatic brain injury. Human head acceleration data for a range of impact severities were collected by instrumenting the helmets of...

This article presents a new performance measure, the actuation e ciency, which describes isotropy in acceleration capability for non-redundant manipulators. It measures the imbalance between the end-e ector accelerations achievable in di erent directions. Prior to this, no measure of this characteristic was adequate for a six degree-of-freedom manipulator, because its ende ector motions are ref...

This article presents a new performance meamre, the actuation eficiency, which describes isotropy in acceleration capability for non-redundant manipulators. It measures the imbalance between the end-effector accelerations achievable in different directions. Prior to this, no measurre of this characteriStic was adequate for a six dem-of-freedom manipulator, because its endeffector motions are re...

This article presents a new performance measure, the actuation eeciency, which describes isotropy in acceleration capability for non-redundant manipulators. It measures the imbalance between the end-eeector accelerations achievable in diierent directions. Prior to this, no measure of this characteristic was adequate for a six degree-of-freedom manipulator, because its end-eeector motions are re...

Falls are a major cause of injuries and deaths in older adults [1]. As for intervention strategies, one of the important problems in preventing or reducing the severity of injury in the elderly is to detect falls in its descending phase before the impact [2]. If a fall can be detected in its earliest stage in the descending phase, more efficient impact reduction systems can be implemented with ...