The natural history and treatment of delayed union stress fractures of the anterior cortex of the tibia

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Abstract
This study presents eight patients with stress fracture of the anterolateral cortex of the midshaft of the tibia. All of the patients, ranging in age from 14 to 23 years, were competitive basketball players who experienced pain while running or jumping for an average of 4.4 months before the diagnosis was made. Eight patients were treated with rest and/or pulsing electromagnetic field therapy. Although one of the pa tients required bone grafting procedure, all eight of these patients showed complete healing and were able to return to full activity after an average of 8.7 months of treatment. They have remained asymptomatic for an average of 14.7 months. The overall time from initial symptoms to return to competition averaged 12.5 months in this group of athletes. The results presented in this paper suggest that rest and pulsing electromagnetic field therapy may result in healing in some patients with delayed union stress fractures of the anterolateral cortex of the midshaft of the tibia. Although this injury is associated with a pro longed healing period, seven of eight patients with adequate followup in our study were able to return to competition without complications following treatment. One patient was asymptomatic for 33 months before experiencing a reinjury. In conclusion, we feel that diagnosis of stress fracture should be a primary consideration in basketball players presenting with a prolonged history of pain on the anterolateral aspect of the midthird of the tibia. Once the diagnosis is made we recommend initial treatment consist of rest and external electrical stimulation for a minimum time of 3 to 6 months prior to considering surgical intervention.

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