In soccer players with pubalgia, adductor dysfunction is a more frequent MRI finding than osteitis pubis. The findings of this study suggest that both entities are mechanically related and that osteitis pubis and adductor dysfunction frequently coexist but, because adductor dysfunction is commonly identified in the absence of osteitis, that adductor dysfunction most likely precedes the development of osteitis pubis in soccer players. The presence of edema on fat-suppressed images of the symphysis is a strong predictor of abnormality at this site in soccer players when compared with age- and sex-matched control subjects.

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We report 2 cases of obturator internus muscle strains. The injuries occurred in young male athletes involved in kicking sports. Case 1 details an acute obturator internus muscle strain with associated adductor longus strain. Case 2 details an overuse injury of the bilateral obturator internus muscles. In each case, magnetic resonance imaging played a crucial role in accurate diagnosis.

A function of North American Aerospace Defence (NORAD) in North Bay, Ontario, is to identify all aircraft entering Canadian airspace. The first step in performing this task is to detect visually the presence of aircraft from either radar or transponder information presented on display consoles. This challenging, real-world vigilance task was used to investigate factors affecting detection latencies. The experiment revealed that performance varied as a function of geographic area of coverage, the midnight shift was particularly sensitive to vigilance decrements, and a vigilance decrement effect can occur in a real-world task, but this effect is not as strong as those reported in laboratory studies.