The Schatzker classification of tibial plateau fractures is widely accepted. Type IV fractures are medial tibial plateau fractures that are either split off as a wedge fragment or depressed and comminuted. Posterior articular surface depression in Schatzker type IV tibial plateau fractures can be seen as a unique variant that increases the difficulty of reduction of the articular surface. Its m...

BACKGROUND Ankle fractures are one of the more commonly occurring forms of trauma managed by orthopaedic teams worldwide. The impacts of these injuries are not restricted to pain and disability caused at the time of the incident, but may also result in long term physical, psychological, and social consequences. There are currently no ankle fracture specific patient-reported outcome measures wit...

The crowns of matrix metalloproteinase 20 (Mmp20) null mice fracture at the dentino-enamel junction (DEJ), whereas the crowns of kallikrein-related peptidase 4 (Klk4) null mice fracture in the deep enamel just above the DEJ. We used backscatter scanning electron microscopy to assess enamel mineralization in incisors from 9-wk-old wild-type, Klk4 null, and Mmp20 null mice, and in developing pig ...

The SidePlate moment connection system, developed by MNH-SMRF Systems, Inc., looks different because it is different. SidePlateTM's unique trademark geometry provides physical separation between the face of column and end of beam by means of parallel full-depth side plates. This innovative feature ensures the elimination of all brittle behavioral uncertainties responsible for the unprecedented...

Skier induced stresses are believed to penetrate deeper into the snow pack with increasing snow temperatures, and hence initiation of a fracture in a weak layer becomes more likely. To date, no measurements exist to quantify or validate the temperature effect on the stress bulb below a skier. In this study we present first results of two-dimensional measurements of the skier induced stress dist...

The John F. KennedyMemorial Bridge, a large cantilever through truss opened in 1963, carries Interstate 65 across the Ohio River between Louisville, Kentucky and Jeffersonville, Indiana. According to a 2003 count, the bridge carries over 120,000 vehicles per day [1]. Inspections revealed a five-inch full-depth transverse crack in the horizontal web in a tension region of the top chord on the ea...

BACKGROUND EEG monitoring is useful for determining an adequate level of anesthesia. However it is sometimes interfered by various reasons. We describe a case in which we successfully confirmed the adequate depth of anesthesia by monitoring the patient state index (PSI), which was computed from the SedLine monitor data in Root (Masimo) during general anesthesia. Our case showed unusual elevatio...

This study was performed to analyze the forming fracture of crash box with extruded Al6060-T6 profile. Deep drawing test evaluate formability For various specimens, deep tests were repeated measure maximum stroke at which did not occur. The finite element analysis for calculate principal strain through obtained stroke. limit diagram design concave shape calculated strains FEA. optimized by usin...

The Cohesive/Overlapping Crack Model is able to describe the transition between cracking and crushing failures occurring in reinforced concrete beams by increasing beam depth and/or steel percentage. Within this Nonlinear Fracture Mechanics model, tensile compressive ultimate behaviors of matrix are modeled through two different process zones that advance independently one another. Moreover, mo...

High-efficiency rock breaking by hydraulic jetting is the key to radial horizontal drilling technology. In order improve efficiency of jet in wells, based on LS-Dyna display dynamics, a numerical simulation model single-nozzle was established analyze influence different nozzle parameters rock-breaking effect. Then, spin multi-nozzle bit established, and rotation speeds effect analyzed. Finally,...