Negative bone scans in impending tibial stress fractures

Abstract
Three highly motivated military recruits who presented with tibial pain on exertion are reported. Their initial bone scan assessments to rule out stress fracture were normal, and the recruits were returned to demanding training. One month later, because of persistent and increasing tibial pain, they were rescanned and focal activity representative of tibial stress fractures was found in each case. Until now it has been assumed that a negative bone scan ruled out a stress fracture unequivocally. Our reported cases show that bone pain may in fact precede scintigraphic evidence of a stress fracture. Persistent and increasing bone pain during demanding physical activity, even in the presence of a prior normal bone scan, may represent stress fracture and repeat bone scan may be indicated.

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