BACKGROUND Sleepiness while driving has been regarded as a major cause of death due to traffic accidents. We compared the degree of sleepiness across five different working time periods (first, morning, post-lunch, afternoon, and last) among Korean bus drivers with different shift types (Daily two shift/Alternating day shift). METHOD We interviewed 332 bus drivers with two shift types (Daily ...

ANT1 is one of the nuclear genes responsible of autosomal dominant progressive external ophthalmoplegia (adPEO) with mitochondrial DNA multiple deletions. The course of ANT1- related adPEO is relatively benign, symptoms being generally restricted to skeletal muscle. Here we report the case of an Italian 74 years old woman with ANT1-related adPEO and dementia. Further studies are needed to asses...

We report the long-term results of the management of neglected chronically infected total knee replacements with a two-stage re-implantation protocol. In 18 of 34 patients (53%) a resistant organism was isolated. All cases were treated by the same surgical team in a specialist centre and had a mean follow-up of 12.1 years (10 to 14). They were evaluated clinically and radiologically using the K...

PURPOSE OF THE STUDY The present study aimed to analyse both, the functional outcome and quality of life after surgical treatment of periprosthetic fractures following TKA. MATERIAL AND METHODS A retrospective review of all periprosthetic fractures following knee arthroplasty which have been surgically treated at our institution between January 2005 and January 2012 was conducted. Beside epidem...

Background No study in the literature has compared early functional recovery following total knee arthroplasty (TKA) in the obese with the nonobese using World Health Organization (WHO) classes of obesity. Our aim was to compare functional scores and flexion post-TKA in each class of obesity as per WHO classification against a matched control group of nonobese patients. Methods Records of 885...

OBJECTIVE To show our experience with press-fit cementless stem and metaphyseal fixation with cement in a selected series of patients who underwent revision total knee arthroplasty. METHODS Thirty-four patients (35 knees) underwent revision total knee arthroplasty using the press-fit technique. Minimum follow-up was one year (mean 2.2 years) with a maximum length of three years. RESULTS Of ...

The rare association of external ophthalmoplegia and ptosis with pigmentary degeneration of the retina was first described by Barnard and Scholz (I954) in a report of four cases. The subsequent literature was reviewed by Davidson (i960), 'who found that only eighteen cases had been described, and added one further case. Within this series he was able to define a relatively homogenous group of t...

OBJECTIVE To investigate whether age-related and experimental reductions in SWS and sleep continuity are associated with increased daytime sleep propensity. METHODS Assessment of daytime sleep propensity under baseline conditions and following experimental disruption of SWS. Healthy young (20-30 y, n = 44), middle-aged (40-55 y, n = 35) and older (66-83 y, n = 31) men and women, completed a 2...

Since June 1986, the University of Pennsylvania has been under contract with the Coast Guard to provide support for the Coast Guard's KSS (knowledge-based decision support systems) project. A principal output of the KSS project has been Max, a DSS shell or environment, originally designed to support modeling tasks during decision making for ship acquisition. Max is innovative in a number of way...

OBJECTIVE to evaluate the results from surgery with computer-assisted navigation in cases of total knee arthroplasty. METHOD a total of 196 patients who underwent total knee arthroplasty with computer-assisted navigation were evaluated. The extension and flexion spaces (gaps) were evaluated during the operation and the alignment after the operation was assessed. The Knee Society Score (KSS) q...