From an industrial point of view the os calcis presents a problem as important as it is complex. Excluding those in children, two out of every hundred fractures in the body involve the os calcis and occur in wage-earning men at a time when they have dependent families and can least afford the loss which may follow such an injury. TABLE I Age_Percentage Percentage Age [ of Total (63) Age of Total (63) 10-15 . .2
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B. McFarland (1937) studied this question.
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