Ganglioneuroma and neuroblastoma are tumors of similar origin; the latter is a rapidly growing, undifferentiated malignant type which may mature and differentiate into the former, a well-differentiated and usually benign type. Though both are neuroectodermal tumors, ganglioneuromas are composed of medullated or non-medullated nerve fibers and distinct mature ganglion cells [ 151, and in man, ar...

Background. Pectoralis major tendon ruptures have been reported in the literature as occupational injuries, accidental injuries, and sporting activities. Few cases have been reported with respect to rodeo activities. Purpose. To describe a series of PM tendon ruptures in professional steer wrestlers. Study Design. Case series, level of evidence, 4. Methods. A retrospective analysis of PM ruptur...

With steer-by-wire, suspension and steering systems are no longer governed by purely mechanical criteria but must instead be designed according to mechatronic considerations. This paper demonstrates an approach to steer-bywire suspension design in which geometric design variables are chosen to render the tire reaction torque about the steer axis highly predictable. This predictability, in turn,...