Interlocking nailing technique offers a wide variaty of indications wh
ich are associated with an increased risk of complications. A consecut
ive series of 208 cases were analyzed and possible complications, how
to avoid them and recommendations for treatment are given. The complic
ations were divided into common complications - like infection, pseuda
rthrosis, malrotation, compartment-syndrome, disorders of the arterial
and venous system, neurological deficts and fat embolism - as well as
into specific complications - like malreduction of the fracture, malp
ositioning of the guide wire, splitting fragments and problems with na
il insertion and with the locking bolts. There was a 8,7 % common comp
lication rate. Specific complications occurred intraoperatively in 3,5
% and postoperatively in 11 % of call cases. This seems to be a high
rate which is decreasing by progressive experience of the surgeon. In
many cases of shaft fractures interlocking nailing technique is the me
thod of choice.