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BACKGROUND Trauma is a leading cause of morbidity, potential years of life lost and health care expenditure in Canada and around the world. Trauma systems have been established across North America to provide comprehensive injury care and to lead injury control efforts. We sought to describe the current status of trauma systems in Canada and Canadians'(More)
OBJECTIVE Open reduction and internal fixation of unstable posterior pelvic ring injury provides better bony stability and less long term morbidity than nonoperative treatment. However, open reduction and internal fixation of the posterior pelvis may involve substantial intraoperative blood loss, reported infection rates of 6 to 25%, and wound complications(More)
In the Silicone Study, 117 of 404 eyes (29%) with severe proliferative vitreoretinopathy (> or = C-3, full-thickness retinal folds in three or more quadrants) enrolled in the study were treated with vitrectomy, underwent a relaxing retinotomy, and were randomly assigned to treatment with long-acting gas or silicone oil. Forty-six eyes (20%) had undergone no(More)
BACKGROUND As part of the design of the Silicone Study, a new classification of proliferative vitreoretinopathy (PVR) was developed that distinguishes the different types of contraction found in PVR. In contrast to the original Retina Society system that emphasized the post-equatorial retinal pathology (posterior PVR), the Silicone Study classification(More)
This article describes the trial design and baseline results for the Silicone Study, a multicenter, randomized surgical trial designed to compare the effectiveness of silicone fluid versus long-acting gas in the treatment of proliferative vitreoretinopathy (PVR). Design features include (1) standardization of the surgical protocol to reduce intersurgeon(More)
The Silicone Study is a multicentered, randomized surgical trial designed to compare the tamponade effectiveness of silicone oil versus long-acting gas in the treatment of proliferative vitreoretinopathy (PVR) by vitrectomy and associated techniques. Fundus photographs are taken to provide documentation of the anatomic status of eyes proposed for entry and(More)
With a clinical goniometer, we measured the arcs of active motion of the shoulder, elbow, forearm, wrist, hip, knee, ankle, and foot in 109 normal male subjects ranging in age from eighteen months to fifty-four years old. The normal limits were determined for subjects who were one to nineteen years old and for those who were twenty to fifty-four years old.(More)
This study determined the intratester and intertester variability and reliability of goniometric measurements taken by four physical therapists on upper and lower extremity motions of normal male subjects. The same subjects were measured once weekly for four weeks by testers with varied experience in goniometry. Data were analyzed by analyses of variance(More)
Nonoperative management of hemodynamically stable patients following blunt hepatic trauma identified by computed tomography (CT) has been reported in up to 20% of patients presenting with hepatic injury, predominantly low grade. We reviewed 128 consecutive adult patients sustaining blunt hepatic trauma with the hypothesis that severe hepatic injuries(More)
The Transfusion Safety Study (TSS) is a multicenter, cooperative investigation of factors that may determine the occurrence and modify the expression of transfusion-transmitted infections. A flow cytometry laboratory was established in each of the six participating centers in order to avoid alterations in cell phenotypes which may be caused by shipping(More)