STUDY OF STRESSES IN TRABECULAR STRUCTURE IN CASE OF FRACTURE TYPE 31-B1.3 USING CANNULATED SCREWS, UNIPODAL SUPPORT

Adrian Ioan BOTEAN

Abstract


Highlighting the stresses and strain state of trabecular structure in case of proximal epiphysis fracture of the femur (with reference to femoral neck fracture) where, for osteosynthesis, are used cannulated screws, raises multiple technical difficulties. For this reason the present study proposes a synthetic 2D model through which we can identify areas of maximum stress and understanding how the trabecular structure is loaded. The analysis is based on different investigation methods: experimental method using digital image correlation and numerical method using finite element analysis. Mechanical load is specific to unipodal support. For 31-B1.3 fracture type, using Pauwels classification, it was determined that the most dangerous situation is registered when the fracture line is at a 70o angle to the horizontal line.

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References


Ahlborg A.G., Johnell O., Turner C.H. et al., Bone loss and bone size after menopause, N Engl J Med, 349:327-334, 2003.

Askin S.R., Bryan R.S., Femoral neck fractures in young adults, Clin Orthop, 114:259-264, 1976.

Banks H.H., Factors influencing the result in fractures of the femoral neck, J bone Joint Surg Am, 44:931-964, 1962.

Blundell C.M., Parker M.J., Pryor G.A., et al., Assessment of the AO classification of intracapsular fractures of the proximal femur, J Bone Join Surg Br, 80(4):679-683, 1998.

Boloşiu H.D., Osteoporoza, Casa Cărţii de Ştiinţă, Cluj-Napoca, 2008.

Botean A.I., Mândru D.S., Hărdău M., Plan model to analyze the state of stresses and strains of the human proximal femoral bone, Acta Technica Napocensis, Series: Applied Mathematics, Mechanics, and Engineering, Vol.58, II: 199-204, 2015.

Botean A.I., Mândru D.S., Hărdău M., Modeling human femoral neck using a 2D structure, Procedia Technology, 19:921-926, 2015.

Bousson V., Meunier A., Bigot C. et al., Distribution of intracortical bone porosity in human midefemoral cortex by age and gender, J Bone Miner Res, 16:1308-1317, 2001.

Ettinger M.P., Aging bone and osteoporosis, Arch Int Mrd, 163:2237-2246, 2003.

Garden R.S., Low angle fixation of fractures of the femoral neck, J Bone Join Surg, 43B:647-663, 1961.

Garden R.S., Stability and union in subcapital fractures of the femur, J Bone Joint Surg, 46B:630-647, 1964.

Helfrich M.H., Crockett J.C., Hocking L.J., Coxton F.P., The pathogenesis of osteoclast disease, BoneKey Osteovision, 4:61-77, 2007.

Klenerman L., Marcuson R.W., Intracapsular fractures of the neck of the femur, J Bone Joint Surg, 52B:514-517, 1970.

Pauwels F., Der Schenkelhalsbruch: Ein Mechanisches Problem, Stuttgard: Ferdinand Enke Verlas, 1935.

Parker S., Corpul uman. Manual complet, Ediţie Litera, 2014.

Riggs B.L., Khosla S., Melton L.J., A unitary mode of involutional osteoporosis: estrogen deficiency causes both type I and type II osteoporosis in postmenopausal women and contributes to bone loss in ageing men, J Bone Miner Res, 13:763-773, 1998.

Seeman E., Structural basis of growth – related gain and age – related loss of bone strenght, Rheumatol, 47(Suppl 4):2-8, 2007.

Singh M., Nagrath A.R., Maini P.S., Changes in trabecular pattern of the upper end of the femur as an index of osteoporosis, The Journal of Bone & Joint Surgery, 52A:457-467, 1970.

Szulcz P., Delmas P.D., Bone loss in elderly men, Osteop Int, 18:495-503, 2007.

Tano M., Horiuchi T., Nakajima I. et al., Age – related changes in cortical and trabecular mineral status, Acta Radiol, 42:15-19, 2001.

Verken K.V., Bouillon P., Vanderscheuren D., Androgens versus estrogens: different theories about opposing actions on periosteal bone expansion, BoneKey, 5:130-136, 2008.

Warming L., Hassager C., Christiansen C., Changes in bone mineral density with age in men and women, Osteop Int, 13:105-112, 2002.

***, Atlasul corpului uman, Editura Aquila, 2002.

***, Consensus Development Conference on Osteoporosis, Osteoporosis Prevention, Diagnosis, and Therapy, The Journal of the American Medical Association, 285: 785-795, 2001.

***, Rockwood and Green’s, Fractures in Adults, Vol.2, 8 Edition, Wolters Kluwer, 2015.


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