BACKGROUND A concomitant tibial shaft and posterior malleolar fracture is a type of regular compound fracture. The associated posterior malleolar fractures are mostly occult fractures, which often do not show a fracture line on ordinary films, and thus lead to a high rate of misdiagnosis. The aim of the present study was to investigate factors helpful for the pre-operative detection of concomit...

A concept of "Fractal Fracture Mechanics" for HDR .(Hot Dry Rock) geothermal reservoir design has been developed as an extension of conventional rock fracture mechanics. It is suggested that this concept is successfully applicable to characterize and model subsurface fracture network in HDR geothermal reservoir. Furthermore, this modeling procedure makes it possible to evaluate the thermal ener...

This dissertation investigates bone fracture fixation. In the proposed method, bone fractures are stabilized using multiple bioresorbable metallic or polymer darts/nails that are inserted into bone at high velocity and which are subsequently incorporated/absorbed by the body so that removal is unnecessary. This dissertation will introduce the proposed method in detail and discuss its advantages...

Dynamics of amorphization and fracture in SiSe 2 nanowires are studied using the molecular-dynamics method. We find that fracture is initiated in an amorphous region at the nanowire surface. Local amorphization propagates across the nanowire while multiple cracks start at the boundaries of the amorphous region. Results for the time evolution of amorphization, crack propagation, and fracture are...

We describe the clinical presentation of a 47-year old woman, presenting with heel pain and swelling around the calcaneus. No trauma had occurred, but radiographic evaluation showed a calcaneal fracture. The conservative treatment resulted in a malunion in varus which lead to multiple ankle sprains necessitating surgical correction. A spontaneous calcaneus fracture is a rare diagnosis, can be e...

Background Sternal fracture is uncommon injury following blunt chest trauma. They are usually caused by direct blunt trauma to the sternum, or most frequently car accident, including steering wheel direct blunt trauma to the sternum. Sternal fracture should be regarded as a hallmark of severe multiple injuries until proven otherwise. The purpose of this study was to describe general features co...

OBJECTIVES Bone lesions from multiple myeloma may lead to pathological fracture of the proximal femur, requiring either fixation or arthroplasty. Little is known about the impact of multiple myeloma on hip fracture care. We investigated whether the patients with multiple myeloma undergoing surgical treatment of hip fractures would be at increased risk for adverse outcomes versus patients who su...

Fracture propagation, especially for fractures emanating from inclined wellbores and closed natural fracture often involves Mode I, Mode II, and at times Mode III fracture pattern simultaneously. In this paper a Virtual Multidimensional Internal Bond (VMIB) model is presented to simulate 3D mixedmode fracture propagation. To represent the contact and friction between fracture surfaces, a threed...

PURPOSE The association between multiple sclerosis (MS) and fracture risk has been reported, but results of previous studies remain controversial and ambiguous. To assess the association between MS and fracture risk, a meta-analysis was performed. METHOD Based on comprehensive searches of the PubMed, Embase, and Web of Science, we identified outcome data from all articles estimating the assoc...