A set of state-of-the-art FE vehicle, restraint system, dummy, and whole body human models was constructed and validated against several sets of quasi-static and dynamic rollover tests. HIII dummy responses during three selected trip-over scenarios were simulated using an FE vehicle model equipped with four different roof stiffness values. It was found that the high dummy head accelerations and...

BACKGROUND Fixation of radial neck fractures can be achieved with a plate and screw construct or, in absence of comminution, with two obliquely-oriented screws. This study investigated the mechanical properties, specifically the stiffness and load to failure, of these two fixation strategies in a cadaver model. METHODS Ten matched-pair radii were removed from fresh cadaver arms. A transverse ...

The theory of static aeroelastic stability of supersonic wings including chordwise bending, as developed in reference 1, is further extended to include the influence of stresses arising from thermal gradients. The wing spanwise twist distribution is found to obey an ordinary differential equation of the fourth order whose coefficients depend on the thermal gradients. The influence of finite def...

BACKGROUND Spontaneous spinal epidural hematoma (SSEH) is a rare spinal cord disorder requiring urgent diagnosis and prompt treatment to prevent irreversible neurological damage. Subarachnoid hemorrhage (SAH), usually presenting with headache and neck stiffness, is also a worldwide neurosurgical emergency. In this case study, a patient on clopidogrel presented with an SSEH mimicking a spontaneo...

Accepted 29 January 1997 An 18-year-old man walked into the out-patient department with complaints of spontaneous onset of pain and stiffness of neck and upper back for the last six years. On examination, multiple painless bony swellings were found over the nape of neck and dorsolumbar region. Similar bony swellings were also present over the left arm, forearm and both legs. Radiographic examin...

Neck pain is one of the three most frequently reported complaints of the musculoskeletal system. Twenty-six to 71% of the adult population can recall experiencing an episode of neck pain or stiffness in their lifetime. Neck pain is usually a benign and self-limited condition, but can be disabling to varying degrees. As such, it has a large impact on healthcare expenditure, due to visits to heal...

PURPOSE Recent epidemiological research has revealed that gender differences exist in concussion incidence but no study has investigated why females may be at greater risk of concussion. Our purpose was to determine whether gender differences existed in head-neck segment kinematic and neuromuscular control variables responses to an external force application with and without neck muscle preacti...

STUDY DESIGN Randomized controlled trial. Objective To determine if force magnitude during posterior-to-anterior mobilization affects immediate and short-term outcomes in patients with chronic, nonspecific neck pain. BACKGROUND The optimal dose of mobilization to effectively treat patients with neck pain is not known. METHODS Patients with neck pain of at least 3 months in duration (n = 64)...