Foot pressure distribution in patients with gonarthrosis.

Background: When standing, leg alignment is controlled by supinating or pronating the subtalar joint, corresponding to valgus or varus deformity of the knee joint. However, in the gait cycle, it is not clear whether the abnormal alignment can be compensated.

Objective: The purpose of this study was to evaluate the control of leg alignment in the latter half of the gait cycle.

Subcutaneous Achilles tendon rupture in an eighty-year-old female with an absence of risk factors.

Achilles tendon ruptures rarely occur in patients over 80 years of age. However, it is unclear what treatment, surgical or conservative, is suitable for such an Achilles tendon rupture in the elderly. In addition, the clinical results of an Achilles tendon rupture in the elderly are disappointing.

Negative capillary-pressure-induced cavitation probability in nanochannels.

The capillarity-induced negative pressure of water flow has been investigated in nanochannels of a rectangular cross section by using computational fluid dynamics (CFD) simulation. As a consequent effect of negative pressure, the cavitation probability has been analyzed numerically. The numerical relation between the critical radius of cavitation (R(c)) and geometrical characteristics of channels shows that cavitation does not occur in channels of uniform cross section (UCS), since 2R(c) is larger than the smallest dimension of the channel.

Factors influencing the improvement of gait ability after total hip arthroplasty.

We aimed to investigate the factors influencing gait improvement in the patients who had undergone total hip arthroplasty. We performed gait analysis on 43 female patients with unilateral hip osteoarthritis. All the patients were analyzed before and at 2, 6, and 12 months after the surgery.

Epitaxial growth of a low-density framework form of crystalline silicon: a molecular-dynamics study.

Crystal growth processes of low-density framework forms of crystalline silicon, named Si clathrates ( Si34 and Si46), during solid phase epitaxy (SPE) have been successfully observed in molecular-dynamics simulations using the Tersoff potential. The activation energy of SPE for Si34 has been found to correspond with the experimental value ( approximately 2.7 eV) for the cubic diamond phase, while the SPE rates of Si46 are much lower than that of Si34.