Fig. 2From: Efficacy of the “Eiffel tower” double titanium elastic nailing in combined management of congenital pseudarthrosis of the tibia: preliminary outcomes of 17 cases with review of literatureBiomechanical principles of double TENs in treating CPT. Two TENs were situated in a crossed fashion with their respective concavities facing each other. The translational, rotational, flexural and axial stability of the nails provide effective support for preventing further refracture and promoting solid union. F: Force acting on the bone; R: Restoring force of the nail; S: Shear force; C: Compressive force. The drawn images were prepared by the authorsBack to article page