Effects of different tunnel sizes of femoral head core decompression on femoral neck biomechanics
HE Guo-Zhong, LONG Qing-Jiang, CHEN Xian-Jun, TU Xiao, DIAO Wei-Dong
Chinese Journal of Clinical Anatomy ›› 2013, Vol. 31 ›› Issue (1) : 100-103.
Effects of different tunnel sizes of femoral head core decompression on femoral neck biomechanics
Objective To observe the effects of different tunnel sizes of the femoral head core decompression on femoral neck biomechanics. Methods 24 fresh cadaver femur specimens were randomly divided into four groups: a normal group, a single-tunnel core decompression group (D=10 mm), a 2-tunnel core decompression group (D=7mm) and a 3- tunnel core decompression group (D=7mm). 3 points in main tension side, main pressure side and the lesser trochanter were chosen as the test points of strain from 0N to 1200N load. Results The strain of the 2-tunnel group was the lowest among the normal group, the single-tunnel group, 2-tunnel group and 3-tunnel group; furthermore, the strain values of all of the 3 core decompression groups were larger than that in the normal group in tension side and the pressure side. Conclusions There is a significant effect on the femoral neck biomechanics by femoral head core decompression. The 2-tunnel (D= 7mm) with the lowest strain value may be the best choice to femoral head core decompression.
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