Significant reduction in simulator collisions at 12 weeks, compared to pre-surgery and two weeks post-surgery rates
More than 53,000 Americans have total shoulder joint replacement (SJR) surgery each year, and yet the effects of this surgery on a patient’s ability to safely drive a vehicle, and the appropriate recovery time before patients should return to driving, have yet to be determined.
In a new study, “Driving Performance after Total Shoulder Arthroplasty,” the driving skills of 28 shoulder replacement patients, with a mean age of 65 ±10 years, were tested at four distinct time points before, during and after surgery using a driving simulator.
The first test was conducted before surgery; a second test, 14 days following surgery; and third and fourth tests at six and 12 weeks post-surgery, respectively. The number of total simulator collisions, off-road collisions, on-road collisions, center-line crosses and off-road excursions were recorded at each trial.
Pain Visual Analog Scale (VAS) and Shoulder Pain and Disability Index (SPADI) scores also were documented, in addition to annual driving mileage and hours slept the previous night. In 28 patients, the mean number of collisions decreased from 6.2 during the first test (pre-surgery) to 5.9 at the second test (two weeks after surgery); and from 5.2 during the third test to 4.2 by the fourth and final test.
There was a statistically significant difference in the mean number of collisions between the first and fourth test. Also, patients who drove less than 1,800 miles per year incurred a greater number of collisions at the first and fourth tests, compared to patients who drove more than 8,700 miles per year.
“At risk driving behavior,” quantified as the number of center-line crosses, decreased from 20.6 during the first test to 14.8 by the fourth test. According to the study authors, patients showed improved driving performance at 12 weeks, with a significant decrease in the number of collisions in the simulated driving course compared to the tests conducted preoperatively and two weeks after surgery.
The study authors recommend that patients wait at least six weeks, and optimally 12 weeks, to resume driving following shoulder replacement surgery. Lead author disclosure.
Kristina Goel | EurekAlert!
Smart Data Transformation – Surfing the Big Wave
02.12.2016 | Fraunhofer-Institut für Angewandte Informationstechnik FIT
Climate change could outpace EPA Lake Champlain protections
18.11.2016 | University of Vermont
A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.
Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...
In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.
“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...
The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.
The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...
Broadband rotational spectroscopy unravels structural reshaping of isolated molecules in the gas phase to accommodate water
In two recent publications in the Journal of Chemical Physics and in the Journal of Physical Chemistry Letters, researchers around Melanie Schnell from the Max...
The efficiency of power electronic systems is not solely dependent on electrical efficiency but also on weight, for example, in mobile systems. When the weight of relevant components and devices in airplanes, for instance, is reduced, fuel savings can be achieved and correspondingly greenhouse gas emissions decreased. New materials and components based on gallium nitride (GaN) can help to reduce weight and increase the efficiency. With these new materials, power electronic switches can be operated at higher switching frequency, resulting in higher power density and lower material costs.
Researchers at the Fraunhofer Institute for Solar Energy Systems ISE together with partners have investigated how these materials can be used to make power...
16.11.2016 | Event News
01.11.2016 | Event News
14.10.2016 | Event News
02.12.2016 | Medical Engineering
02.12.2016 | Agricultural and Forestry Science
02.12.2016 | Physics and Astronomy