We have analysed 250 cases of fractured shaft of the femur with the ob
jective of highlighting any preventative measures and anticipating mor
bidity associated with cause and type of injury. The younger patients
typically injure themselves as pedestrians, motorcyclists and bicyclis
ts in Summer. The older patients tend to have falls in late Summer and
Winter. The outcome varies depending on the cause, type and age of th
e injured person. The greatest morbidity was found in high-velocity ac
cidents involving motorcyclists, pedestrians and car accidents. Knee f
lexion is a particular problem with these injuries and we are currentl
y using continuous passive motion in conjunction with a continuous opi
ate infusion where this is likely to be a problem. The results also su
ggest that the mechanism of injury and its possible prevention, partic
ularly in motorcycle design, could be as important as the type of trea
tment. Elderly females following falls also form a distinct group, sug
gesting that osteoporosis is a major factor with the best outcome asso
ciated with treatment by internal fixation. We feel that age alone sho
uld not be a reason for exclusion from intramedullary fixation and thi
s merits further study.