Stress fractures.
D000293:Adolescent; D000328:Adult; D001696:Biomechanical Phenomena; D005221:Fatigue; D050723:Fractures, Bone / Q000000981:diagnostic imaging / Q000209:etiology*; D006801:Humans; D008297:Male; D008887:Military Medicine; D011859:Radiography; D013314:Stress, Mechanical