| Objective:1.To investigate the effect of age on bone mineral density,proximal femoral opening and the ratio of coronal diameter to sagittal diameter in the proximal femur.2.To investigate the effect of bone density on the opening index of the proximal femoral medulla and the ratio of the coronal diameter to the sagittal diameter of the proximal femur.3.To explore the correlation between bone mineral density and the maxillary exponential opening of the femur.4.To explore the correlation between bone mineral density and the ratio of the coronal diameter to the sagittal diameter in the proximal femur.Methods:All patients who were admitted to the Shanxi Grand Hospital between December2014 and December 2018 were collected,and finally 199 patients met the inclusion criteria.Through the PACS system and medical record system of our hospital,we retrieve other basic data such as pelvic orthotopic X-ray,hip CT,bone mineral density,age and gender,and use the syngo.via software to align the pelvis orthodontic X-ray in the healthy femur.The inner diameter of the medullary cavity 20 mm above the midpoint of the rotor and the diameter of the isthmus of the femoral medullary cavity were measured three times in succession.The cogo.via software was used again to perform three consecutive measurements of the coronal and sagittal diameters of the axial image of the lower extremity of the hip joint in hip CT..The pelvic orthodontic X-ray and hip CT were measured three times in succession.The inner diameter of the medullary cavity20 mm above the midpoint of the contralateral femoral trochanter,the diameter of the femoral canal isthmus,the axial diameter of the axial image of the lower trochanter and the lower trochanter.The sagittal diameter of the edge axis image is the introclass correlation coefficient(ICC)test reliability,and the mean of the four types of data is used as the final value.The canal flare index(CFI)is the ratio of the inner diameter of the medullary cavity 20 mm above the midpoint of the contralateral femoral trochanter to the diameter of the femoral canal.The ratio of the coronal diameter to the sagittal diameter of the proximal femoral canal is The ratio of the proximal femoral medullary coronal diameter to the proximal femoral medullary sagittal diameter.Statistical analysis was performed on the data using SPSS 21.0 software.P < 0.05 was considered statistically significant.The measurement data in a normal distribution is represented by x±s,and the measurement data in a skewed distribution is represented by the median.The t-test was used to compare the measurement data between the two groups,and the homogeneity test of variance was performed.One-way analysis of variance was used for comparison between groups,and LSD test was used for comparison between groups.The correlation between the femoral neck bone mineral density and the proximal femoral medullary opening index was analyzed.The correlation between the femoral neck bone density and the ratio of the coronal diameter to the sagittal diameter of the proximal femoral medulla was analyzed by Pearson correlation.Results:A total of 199 patients who met the inclusion criteria were enrolled in the study.The diameter of the medullary cavity 20 mm above the midpoint of the femoral trochanter,the diameter of the femoral canal isthmus,the proximal femoral medullary coronal diameter and the femur near the midpoint of the femur The sagittal diameter of the medullary cavity was tested by ICC,and the results were 0.997,0.998,0.997,and0.998,respectively.The 95% confidence interval was concentrated.(1)The bone mineral density of patients aged ?60 years and those aged >60 years was analyzed by t-test.The bone mineral density of patients aged ?60 years was significantly greater than that of patients aged >60 years old.The difference was statistically significant(P=0.000).(2)A t-test was performed on the proximal femoral medullary opening index(CFI)of patients aged ?60 years and those aged >60 years.It was found that the CFI value of patients aged ?60 years was significantly greater than that of patients aged >60years.Values,the difference was statistically significant(P = 0.000).(3)The t-test was performed on the ratio of the coronal diameter to the sagittal diameter(K)of the proximal femoral medulla in patients aged ?60 years and age>60 years.The K value of patients aged ?60 years was significantly lower than age>60 years old.The K value of the patients was statistically significant(P=0.037).(4)One-way ANOVA was performed on the proximal femoral medullary opening index of patients with bone density T ?-1,-1 > T >-2.5,T ?-2.5.The LSD test was used to compare the two groups.It was concluded that with the decrease of bone density,the index of medullary cavity in the proximal femur decreased,and the difference between the three groups was statistically significant(P<0.05).(5)One-way ANOVA was performed on the ratio of the coronal diameter to the sagittal diameter of the proximal femoral medullary cavity in patients with bone density T ?-1,-1 > T >-2.5,T ?-2.5.The LSD test was used to compare the two groups..It was concluded that the ratio of coronal diameter to sagittal diameter in the proximal femur was increased with the decrease of bone density,and the difference between the three groups was statistically significant(P<0.05).(6)Pearson correlation analysis between bone density and the proximal femoral opening of the femur was found to have a Pearson correlation coefficient of 0.092 and P=0.000;suggesting a high positive correlation between the two.(7)Pearson correlation analysis between the bone density and the ratio of the coronal diameter to the sagittal diameter of the proximal femoral canal showed that the Pearson correlation coefficient was-0.330,P=0.000;suggesting a negative correlation between the two.Conclusion:1.Age had an effect on bone density,the proximal femoral opening and the ratio of the coronal diameter to the sagittal diameter of the proximal femoral medulla.2.Bone mineral density has an effect on the proximal femoral opening of the femur and the ratio of the coronal diameter to the sagittal diameter of the proximal femoral medulla.3.There was a high positive correlation between bone mineral density and the proximal femoral opening.4.There was a negative correlation between bone mineral density and the ratio of coronary diameter to sagittal diameter in the proximal femoral medulla. |
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