Because of the complexity of the architecture of the foot radiographic diagnosis is often difficult and injury sometimes unrecognised. Dislocations may be missed on plain radiography because in two dimensions it is difficult to appreciate displacement ofa single bone or disruption of its articulation. Moreover, isolated tarsal dislocations are uncommon and unfamiliarity alone may contribute to ...

Atomistic mechanisms of fracture accompanying structural phase transformation (SPT) in AlN ceramic under hypervelocity impact are investigated using a 209 x 10(6) atom molecular-dynamics simulation. The shock wave generated by the impact splits into an elastic wave and a slower SPT wave that transforms the wurtzite structure into the rocksalt phase. The interaction between the reflected elastic...

Fractures of the femoral head associated with a hip dislocation are relatively rare and often associated with a poor functional outcome [1]. Keely and Lipscomb reported that the incidence of this type of femoral head fracture is two cases per one million per year [2]. Treatment strategies in femoral head fracture-dislocations are very controversial and represent one of the few true orthopedic e...

STUDY DESIGN A radiographic review of 87 patients with either unilateral or bilateral facet dislocations or fracture/dislocations treated with anterior cervical discectomy, fusion, and plating. OBJECTIVE The primary objective of this study was to report the incidence of radiographic failure and factors that would predispose to this loss of alignment. The secondary objective was to report the ...

Introduction The anterior perilunate dislocations of the carp (PDC)are exceptional and poorly known lesions, which may go unnoticed in an emergency. They derive their importance from the severity of sequelae, which are dominated by chronic wrist instability and long-term osteoarthritis. Case Report We report the case of an open anterior PDC with no carpal fracture in a young patient. The inju...