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. 2019 Feb 28;16(2):145-150.
doi: 10.1016/j.jor.2019.02.026. eCollection 2019 Mar-Apr.

Healing of tibial comminuted fractures by the meaning of an innovative intramedullary nail

V Filardi  1
Affiliations

Healing of tibial comminuted fractures by the meaning of an innovative intramedullary nail

V Filardi. J Orthop. .

Erratum in

Abstract

In this paper, an innovative design of prosthesis, conceived to heal the comminuted fractures of long bones has been investigated. The proposed prosthesis consists of two shell valves hinged to each other by a central pin and bearing slits along the surface in such a way as to guarantee the exchange of body fluids and at the same time ensure the structural stability of the bone. Two screws then hold the two valves together. The operative technique for the introduction of this type of prosthesis for the decomposed fracture of long bones consists in the incision of the fracture site, introduction of the open shell prosthesis with reduction of the fracture and composition of the bone fragments, closure by means of fixing screws of the prosthesis shell, stitching open wound flaps. A complete numerical FE model of an implanted femur was analyzed, by considering a vertical load of 980 N. Analyses confirmed results, in terms of mechanical performances, comparable with the others traditional systems of prosthesis.

Keywords: CAD; Comminuted fracture; FEM; Tibial prosthesis.

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Figures

Fig. 1
Fig. 1
Different typology of bony fractures.
Fig. 2
Fig. 2
a) Technical drawing of the shell prosthesis, b) loading condition of the implanted tibia with a comminuted fracture.
Fig. 3
Fig. 3
Contour maps of displacements.
Fig. 4
Fig. 4
Contour maps of Eq. Von Mises.
Fig. 5
Fig. 5
Contour maps of Eq. elastic strain.
Fig. 6
Fig. 6
Curves of Eq. Von Mises stress vs. tibial distance evaluated on the tibia and on the prosthesis.
See this image and copyright information in PMC

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