Cancellous bone and mechanical strength of the femoral neck
- 109 Downloads
Twenty pairs of dried macerated femora were submitted to progressive, physiologically oriented loading. The aim of this work was to determine the role of trabecular bone, the importance of the bone mineral density of the femoral shaft, and the importance of the Singh index in the mechanical strength of the femoral neck. By means of an original technique, the influence of both the principal tensile and secondary compressive trabecular groups on the mechanical strength to bending stress has been demonstrated. The artificial destruction of these trabecular groups is responsible for a loss of strength of more than 50% in varus angulation while it has practically no effect in valgus angulation. On the other hand, the mechanical strength of the femoral neck is better correlated with the bone mineral density of the femoral shaft (r=0.74) than with the Singh index (r=0.50) or with age (r=0.15).
KeywordsPublic Health Bone Mineral Density Bone Mineral Femoral Neck Mechanical Strength
Unable to display preview. Download preview PDF.
- 2.Brown TD, Ferguson AB Jr (1978) The development of a computational stress analysis of the femoral head. J Bone Joint Surg [Am] 60:619–629Google Scholar
- 5.Delaere O, Bourgois R, Dhem A (1988) Considérations anatomo-physiologiques à propos de l'extrémité proximale du fémur humain. Arch Anat Histol Embryol (Strasb) (in press)Google Scholar
- 7.Hardinge MG (1949) Determination of the strength of the cancellous bone in the head and neck of the femur. Surg Gynccol Obstet 89:439–441Google Scholar
- 8.Koch JC (1917) The laws of bone architecture. Am J Anat 21:177–298Google Scholar
- 12.Pauwels F (1980) Biomechanics of the locomotor apparatus. Springer, Berlin Heidelberg New YorkGoogle Scholar
- 15.Singh M, Nagrath AR, Maini PS (1970) Changes in trabecular pattern of the upper end of the femur as an index of osteoporosis. J Bone Joint Surg [Am] 52:457–467Google Scholar
- 17.Urist MR (1960) Observations bearing on the problem of osteoporosis. In: Kaare-Rodahl, Nicholson JT, Brown EM Jr (eds) Bone as a tissue. McGraw-Hill, New York, pp 18–45Google Scholar
- 18.Von Meyer H (1867) Die Architektur der Spongiosa. Reichert und Dubois-Reymond's Archiv 34:615–628Google Scholar