ASTRONOMY AND ASTROPHYSICS Gamma-ray bursts from internal shocks in a relativistic wind : an hydrodynamical study. Abstract. The internal shock model for gamma-ray bursts involves shocks taking place in a relativistic wind with a very inhomogeneous initial distribution of the Lorentz factor. We have developed a 1D lagrangian hydrocode to follow the evolution of such a wind and the results we ha...

Hypertrichosis refers to increased vellus hair growth and is independent to androgen excess. The acquired localized hypertrichosis (ALH) is one of the typical hypertrichosis, which mainly results from chronic irritation, inflammation, friction, and occlusion by plaster of Paris. Here, we report a young boy who had ALH on his right hand following a closed fracture with internal fixation and plas...

OBJECTIVES To measure the rate of union in patients with pseudoarthosis of the scaphoid, treated with trapezoidal bone grafting as outlined by Fernandez and 1 of 3 methods of internal fixation and to compare unions versus nonunions and potential predictors of union to determine if associations exist. DESIGN A retrospective radiologic study of scaphoid pseudoarthroses. SETTING Division of Or...

This following case report describes the open reduction, internal fixation and the reconstruction of an extensive comminuted mandibular fracture with bilateral condylar fractures in a 19-year-old male patient with an intellectual disability and autistic disorder. He suffered fall trauma, resulting in shattered bony fragments of the alveolus and mandibular body between both mandibular rami, the ...

INTRODUCTION: Management of tibial fractures can be complicated by infection of internal fixation hardware, resulting in increased morbidity and amputation rate. When removal of infected internal hardware with external fixation is not possible, salvage of the lower extremity is attempted through debridement, antibiotics, and soft tissue coverage. The purpose of this study is to investigate salv...

BACKGROUND The optimal choice for the stabilization of displaced femoral neck fractures remains controversial, with alternatives including arthroplasty and internal fixation. Our objective was to determine the effect of arthroplasty (hemiarthroplasty, bipolar arthroplasty, and total hip arthroplasty), compared with that of internal fixation, on rates of mortality, revision, pain, function, oper...

UNLABELLED INTRODUCTION Biepicondylar fracture of the elbow is very rare, and to date there have only been three reports of this injury and its treatment in the English scientific literature. This case report evaluates the surgical internal fixation of a biepicondylar fracture of the elbow with an associated dislocation. CASE PRESENTATION We report the case of a 15-year-old Turkish girl wi...

We report a C2 tear-drop fracture of a 69-year-old patient which occurred after a fall. Although tear drop fractures of the subaxial cervical spine mostly develop due to a flexion type injury, the mechanism is often compressive hyperextension injury at the C2 vertebra. Rigid external stabilization and internal fixation are the treatment alternatives. Internal fixation may be performed using the...

Introduction: In open reduction and internal fixation for the treatment of mandibular fracture, the fixation technique used is very important in reducing post-operative complications and promoting the healing process. This study assessed the results of fixation of the mandible using two mini-plates perpendicular to each other in the lower border of the mandible for fracture treatment.    Materi...