The tensile modulus of the samples after the one cyclic deformation increased with increasing LB-100 cost the keeping time at room temperature after the cyclic deformation. The increase was larger for the PS than for the PD. These results Suggest that the broken cross-linking structure induced by the stretching process was partly reconstructed during and after the retraction with this tendency more prominent in the PS than in the PD. (C) 2009 Wiley Periodicals, Inc. J Appl Polym Sci 113: 2791-2795, 2009″
“Background: The reference points for rotational orientation of the humeral component
during elbow arthroplasty typically are on the articular surface or the humeral epicondyles. With bone loss, these landmarks may be compromised. Our purpose was to assess whether the flat posterior humeral cortex proximal to the olecranon fossa is a reliable landmark with which to orient the humeral component during elbow arthroplasty.
Methods: Fifty cadaveric elbows (mean age [and standard deviation] at the time of death, 73 +/- 12 years) underwent computed tomography (CT) scans. The flexion-extension axis (FEA) was determined by sphere-fitting the capitellar surface and circle-fitting the narrowest portion of the trochlea. The posterior ABT-263 chemical structure humeral
cortical line (PCL) was drawn on the flat posterior humeral cortex proximal to the olecranon fossa. The transepicondylar axis (TEA) was determined by a line between the most prominent points on the epicondyles. The angles between the PCL and FEA and the TEA and FEA were calculated and were compared by using two-tailed t tests.
Results: The PCL was externally rotated by a mean (and standard deviation) of 14.0 degrees 4.2 degrees (p < 0.001) relative to the FEA (males: 12.6 degrees +/- 3.6 degrees, females: 16.4 degrees +/- 5.2 degrees; p = 0.002). The TEA was externally rotated by a mean of 2.8 degrees +/- 3.5 degrees (p < 0.001) relative to the FEA (males: 2.7 degrees +/- 3.4 degrees, females: 2.6 degrees +/- 3.7 degrees; p = 0.96). The intraobserver and
interobserver reliability was >0.98 for the capitellar NCT-501 ic50 and trochlear centers, while the cumulative intraobserver and interobserver reliability was 0.8 and 0.5 for the FEA-PCL angle and 0.4 and 0.3 for the FEA-TEA angle.
Conclusions: The posterior humeral cortex is a reproducible landmark that is externally rotated with respect to the flexion-extension axis of the distal part of the humerus. The surgeon must be aware of the need for an internal rotation correction factor and consider the influence of the patient’s sex on this correction when using the posterior humeral cortex as a landmark to avoid humeral component malrotation.”
“Objective: Invasive fungal infections are associated with high morbidity and increased mortality.