A prospective study of adolescents with femoral fractures treated with
intramedullary nailing was done to identify complications and evaluat
e the outcome of this method of treatment. Sixty patients with femoral
fractures have been treated with antegrade intramedullary nailing. Ma
gnetic resonance imaging scans were obtained to evaluate for subclinic
al avascular necrosis of the femoral head. The average patient age was
12 years. All patients had open physes at the time of surgery. Implan
ts were removed in 33 patients to date at an average of 10 months afte
r initial nailing. All but two patients continue to have no signs of a
vascular necrosis, no rotational or angular deformity, and no nerve pa
lsy. Two patients have had subclinical avascular necrosis as seen on m
agnetic resonance imaging. One patient had avascular necrosis develop
in both femoral heads I year after nail removal from the right femur.
The second patient has asymptomatic marrow changes on magnetic resonan
ce imaging consistent with avascular necrosis with no femoral head col
lapse, It is thought that intramedullary nailing of pediatric femoral
fractures is a safe treatment option. Few complications and a small ri
sk of subclinical presentation of avascular necrosis of the femoral he
ad that can become evident after removal of the implant have been foun
d.