Traumatic dislocation of the patella is classified as lateral, medial, or intra-articular according to the direction of dislocation. Lateral dislocation is the most common type of patellar dislocation, and intra-articular dislocation is rare. Intra-articular dislocation is classified as superior, inferior, or vertical dislocation. Inferior dislocation is categorized as Type I, which occurs in y...

We examined the thermodynamic and kinetic properties of surface dislocations on the Au 001 surface using atomistic simulations based on a modified embedded atom potential that was optimized for Au surfaces. Two different surface dislocations are obtained, containing five displaced atomic columns type I or three displaced atomic columns type II . Both configurations are more stable than adatoms ...

PURPOSE We investigated the incidence and time of dislocation and other factors associated with dislocation of bipolar hemiarthroplasty related to the treatment of femoral neck fracture in old age patients. MATERIALS AND METHODS Between January 2002 and April 2014, 498 femoral neck fractures (467 patients) were treated with bipolar hemiarthroplasty and included in this study. All surgeries we...

Purpose. To analyze the patients with secondary dislocation of CTR and IOL within 5 years from cataract surgery, to determine predisposing factors. Methods. 16 eyes of 15 patients aged 66.2 ± 6.7 (from 49 to 82) with CTR/IOL complex dislocation within 5 years from cataract surgery were compared with 26 patients aged 67.1 ± 7.2 (from 53 to 85), implanted with CTR during cataract surgery to manag...

We investigated the stress-induced migration of a class of simple low-angle mixed grain boundaries (LAMGBs) using a combination of discrete dislocation dynamics simulations and analytical arguments. The migration of LAMGBs under an externally applied stress can occur by dislocation glide, and was observed to be coupled to the motion parallel to the boundary plane, i.e. tangential motion. Both t...

Icosahedral quasicrystals deform plastically by dislocation motion. The deformation behaviour can be modelled by simple equations of dislocation mobility, the damage of the quasicrystal structure and the kinetics of dislocation evolution, but fundamental questions are still discussed, like the mode of dislocation motion (glide or climb) and the role of phason defects. 2003 Acta Materialia Inc. ...

The discourse function of the syntactic construction left dislocation in English has received significant attention. Prior research has identified at least three distinct form-function correlations underlying left dislocation. This paper examines left dislocation tokens from a corpus of spoken English recorded in South Philadelphia. From this emerges a fourth type of left dislocation not previo...

The motion of dislocations in irradiated materials has unique features that are not seen in unirradiated materials undergoing plastic deformation. In the present work, we show dislocation dynamics studies that reveal the single and collective aspects of dislocation motion in materials under displacement cascade damage. First, we investigate the dynamics of dislocation interaction with irradiati...

BACKGROUND Lens dislocation is a common disease in ophthalmology, which leads to vision loss, while the lens dislocation caused by vomiting has not been reported yet. We report a case of lens dislocation caused by simple vomiting. This case further implicated for the pathogenesis of lens dislocation. CASE PRESENTATION A 51-year-old male who complained about "dizziness, vomiting, and the visio...

Dislocation bias factors in bcc Fe have been calculated based on atomistic interaction energy maps on three kinds of dislocations, namely the a0/2〈111〉{110} screw, a0/2〈111〉{110} and a0〈100〉{001} edge dislocations. The results show that the dislocation bias is higher for the a0/2〈111〉 edge dislocation than for the a0〈100〉 edge dislocation, even though the latter possesses a larger Burgers vecto...