An experimental model for bone diaphyseal resection was tested on ten
female beagle dogs. This important osseous defect, which represented 2
cm of the femoral diaphysis, allowed a massive implantation of bone s
ubstitutes and early weight bearing. For treatment of this very unstab
le fracture model, interlocking nails were used to avoid rotational in
stability and impaction of the femoral segments. The more efficient st
ability was performed with two proximal and two distal interlocking sc
rews.