Finite element analysis of slipped capital femoral epiphysis and its fixation by a single screw

Czeglédi, Ádám and Bojtár, Imre and Szőke, György (2006) Finite element analysis of slipped capital femoral epiphysis and its fixation by a single screw. JOURNAL OF COMPUTATIONAL AND APPLIED MECHANICS, 7 (1). pp. 13-22. ISSN 1586-2070

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Abstract

Slipped capital femoral epiphysis (SCFE) is a relatively common orthopaedic disorder that occurs in early adolescence ages. SCFE means the slip of the epiphysis of the upper part of the femoral head along the growth plate (physis). The most important step in the treatment process of femoral disorders that develop due to birth defect or disturbance of growth is the early intervention. The most effective treatment procedure of SCFE is the in situ fixation of the slipped epiphysis by a single screw. There is a common solution for the positioning of the pin to achieve the less harmful construction, but it is not confirmed, and was not investigated up to the present. The aim of our work was complex. First, we wished to build up a numerical model of the proximal epiphysis of the femur with the phenomenon of SCFE itself, due to finite element (FE) method, and then to build up various FE models with severally positioned pins. The aim was to find the most optimal position of the screw that generates the less stress inside the bone and helps recovering the most effective way by reducing the possibility of postoperative failures or any extent of impairment.

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