Dislocation Based Fracture Mechanics

Fracture mechanics-based life prediction of a riveted lap joint

In this paper, three-dimensional modeling of the fatigue crack growth profiles was performed in a simple riveted lap joint. Simulation results showed that mode I was dominated on the one side of the plates and the crack straightly grew on this side, while the other side of the plates was in a mixed-mode condition and the crack propagation path was not straight on this side. Afterward, the fract...

Perilunate dislocation and perilunate fracture-dislocation.

Perilunate dislocations and perilunate fracture-dislocations usually result from high-energy traumatic injuries to the wrist and are associated with a characteristic spectrum of bony and ligamentous damage. Radiographic evaluation of the wrist reveals loss of normal radiocarpal and intercarpal colinearity and bony insult, which may be overlooked at the initial presentation. Prompt recognition i...

Dislocation and fracture-dislocation of the hip.

Of 54 patients with posterior dislocations of the hip of type I and type II (Stewart and Milford 1954), 47 were followed for a mean period of 6.7 years (2 to 11). Of these, 23 had dislocation with minimal lesions of the acetabulum (type I) and 24 had an avulsed dorsocranial fragment (type II). All were reduced by closed methods within six hours. The subsequent treatment of type I dislocations w...

Dislocation and fracture-dislocation of the pelvis.

Dislocation and fracture-dislocation of the pelvis is a major injury; the force involved in its production may not only disrupt the pelvis but result in extensive associated injuries. Between 1960 and 1968, 43 patients with this injury were treated in the Accident Service of the Radcliffe Infirmary. Their case records and radiography have been analysed and 29 of the patients re-assessed at a fo...

Atlanto-axial fracture-dislocation.