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Cycling performance is affected by the interaction of a number of variables, including environment, mechanical, and human factors. Engineers have focused on the development of more efficient bicycles. Kinesiologists have examined cycling performance from a human perspective. This paper summarizes only certain aspects of human ergonomics of cycling,(More)
Artificial disc prosthesis show fair to good short- and mid-term results. Long-term results are becoming apparent now, however, the incidence of late complications with this procedure remain poorly understood. In this report we will analyse late complications and discuss our experiences with salvage operations in patients with persistent pain after SB(More)
Boerhaave's syndrome or spontaneous rupture of the esophagus is a rupture of the esophagus after vomiting. It is rare in children, and to date, 26 children have been reported. We present the case of a 5-year-old boy who presented with dyspnea after vomiting and subcutaneous emphysema. The diagnosis was confirmed with esophagoscopy. The patient was(More)
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