Experimental study of anteversion of femoral prosthesis in hemiarthroplasty for treating femoral in-tertrochanteric fracture in the elderly / 中国医师杂志

ABSTRACT

Objective To study the accuracy of the anteversion of femoral prosthesis in hemiarthro-plasty for treating femoral intertrochanteric fracture in the elderly.Methods Twenty femoral neck antever-sions of specimens were measured, which were control group(A).The femoral specimens were made into the model of femoral intertrochanteric fracture, which were installed femoral prosthesis according to minor trochanter(B),identifying the max diameter of cavum medulla(C),ocular estimating femoral condylar line ( D) ,combination of identifying the max diameter of cavum medulla and ocular estimating femoral condylar line( E) respectively.All the anteversion of femoral prosthesis were measured.Results The anteversion wereA group(8.98 ±4.31)°,B group (9.12 ±4.87)°,C group (9.57 ±6.49)°,D group (13.18 ± 5.83)°,E group (10.37 ±4.56)°respectively.The difference among the five groups was statistically sig-nificant.There was difference between D and A, there were no differences between B and A, C and A, E and A respectively.Conclusions In hemiarthroplasty for treating femoral intertrochanteric fracture, the an-teversion of femoral prosthesis is according to minor trochanter possibly; if the minor trochanter can not be got reduction, it is a good option according to combination of identifying the max diameter of cavum medulla and ocular estimating femoral condylar line to make sure the accuracy of the anteversion of femoral prosthe-sis.