Among two groups of navy. recruits undergoing training,- one consisting of 500 enlisted men and another 100 newly enrolled midshipmen, 18 reported to Chinhae Naval Hospital with fatigue fractures during the period from February though September 1969.
Following observations were made on these cases
1. The incidence of fatigue facture was 1.4 percent among the enlisted men and 11 per cent among the midshipmen.
2. There were 6 cases of complete. fracture and 2 cases of incomplete fracture. In the remaining JO .cases,
only periosteal reaction was evdent roentgenographically with no . visible fracture line initially:
fracture lines, however, becamee apparent on subsequent examinations in all the cases.
3. The fractures involved the femur in 4 cases and the tibia in 14 cases, a ratio of 1:3. 5 in latter´ s favor. 4. The site of predirection in the femur was the distal one third of the shaft, occurring in 3 of the
cases. In the tibia the junction. of the upper and middle thirds was most frequently affected occurring
in 10, of the cases.
5. All the cases in our series healed without any complications.
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