BACKGROUND Bone staples are an accepted method of fixation in foot surgery. They reduce operating time and trauma in surgical procedures. A variety of memory staples are available but their properties compared to standard staples are not known. We carried out a study comparing two popular types of memory staples and a standard stainless steel staple. METHODS Standardized bone models of metata...

BACKGROUND Several studies showed instantaneous axis of rotation (IAR) in the intact spine. However, there has been no report on the trajectory of the IAR of a damaged spine or that of a fixed spine with instrumentation. It is the aim of this study to investigate the trajectory of the IAR of the lumbar spine using the vertebra of deer. METHODS Functional spinal units (L5-6) from five deer wer...

The article presents the results of an experimental study bending saw blade 5LP linter machine. Therefore, a bench installation was made to conduct process under contact with ribs. At that, serial gaskets AK5M2 aluminum alloy and recommended new design St3 steel for machine were used. When modeling blades touching ribs, load force 9.8, 19.6, 34.3 49 N is suspended on maximum diameter blade. res...

Modern VHCF testing regimes are studied. A new loading scheme applicable to a piezoelectric fatigue machine is proposed. The studied analytically and numerically. analytical part comprises the calculation of specimen's geometry operate correctly on machine, as well stress-strain state during an experiment in order determine one's durability. model based kinetic damage equation introduced. This ...

After being processed into a certain shape by stirrup bending machine, steel bars are used as the skeleton of reinforced concrete in construction. The accuracy their directly affects bearing capacity concrete. In order to improve springback angle after bending, this paper focuses on optimizing structural parameters bar machine and controlling bars. influence support shaft diameter, crankshaft r...