Port site hernias following robotic colorectal surgery in people with obesity.

Port site hernias are a rare complication following robotic surgery that can result in disastrous outcomes. We describe incarcerated port site hernias in two patients with obesity. Both patients required laparoscopic reduction.

Measures of dynamic stability: Detecting differences between walking overground and on a compliant surface.

Numerous measures of dynamic stability have been proposed to gauge fall risk in the elderly, including stride interval variability and variability of the center of mass. However, these measures have been deemed inadequate because they do not take into account temporal information. Therefore, research on the measurement of dynamic stability has turned to other analysis methods such as stride interval dynamics and the maximum Lyapunov exponent.

An empirical examination of detrended fluctuation analysis for gait data.

Stride interval series exhibit statistical persistence, and detrended fluctuation analysis (DFA) is a routinely employed technique for describing this behavior. However, the implementation of DFA to gait data varies considerably between studies. We empirically examine two practical aspects of DFA which significantly affect the analysis outcome: the box size range and the stride interval series length.

Effect of treadmill walking on the stride interval dynamics of human gait.

Metronomic walking has been found to diminish the statistical persistence intrinsic to the stride interval time series of human gait. Since treadmill walking (TW) possesses a similar form of external pacing, we proposed to study the disruptions in the natural neuromuscular rhythms of gait during TW. Treadmill walking is a widespread rehabilitative tool, however, its effect on an individual's stride dynamics is not well understood.