General Considerations - Upper leg
The diaphysis of the femur is surrounded by a thick muscular envelope. The
major neurovascular structures are located medially and posteriorly, and,
therefore, the femur can safely be approached over the anterolateral
Overall neurovascular status of the limb
For pin insertion, the condition of the soft-tissue envelope of the femoral
shaft has to be considered (areas of crush injuries, or areas of extensive
soft-tissue damage should be avoided, in order to minimize the risk of
subsequent pin-track infection).
The safest anatomical zones for pin insertion are the anterolateral and direct
lateral regions of the femur. See anatomical location of muscle groups and
neurovascular bundles in each respective region.