Preferential low bone mineral density of the femoral neck in patients with a recent fracture of the proximal femur

1991 ◽  
Vol 1 (3) ◽  
pp. 147-154 ◽  
Author(s):  
T. Chevalley ◽  
R. Rizzoli ◽  
V. Nydegger ◽  
D. Slosman ◽  
L. Tkatch ◽  
...  
Keyword(s):  
Bone Mineral Density ◽  
Femoral Neck ◽  
Bone Mineral ◽  
Proximal Femur ◽  
Mineral Density ◽  
Low Bone Mineral Density ◽  
Recent Fracture

scholarly journals Mechanical torque measurement in the proximal femur correlates to failure load and bone mineral density ex vivo

2013 ◽  
Vol 5 (2) ◽  
pp. 16 ◽  
Author(s):  
Stefan Grote ◽  
Tatjana Noeldeke ◽  
Michael Blauth ◽  
Wolf Mutschler ◽  
Dominik Bürklein
Keyword(s):  
Bone Mineral Density ◽  
Femoral Neck ◽  
Bone Quality ◽  
Bone Mineral ◽  
Proximal Femur ◽  
Failure Load ◽  
Peak Torque ◽  
Mineral Density ◽  
Local Bone ◽  
Load To Failure

Knowledge of local bone quality is essential for surgeons to determine operation techniques. A device for intraoperative measurement of local bone quality has been developed by the AO-Research Foundation (DensiProbe®). We used this device to experimentally measure peak breakaway torque of trabecular bone in the proximal femur and correlated this with local bone mineral density (BMD) and failure load. Bone mineral density of 160 cadaver femurs was measured by <em>ex situ </em>dual-energy X-ray absorptiometry. The failure load of all femurs was analyzed by side-impact analysis. Femur fractures were fixed and mechanical peak torque was measured with the DensiProbe® device. Correlation was calculated whereas correlation coefficient and significance was calculated by Fisher’s Z-transformation. Moreover, linear regression analysis was carried out. The unpaired Student’s t-test was used to assess the significance of differences. The Ward triangle region had the lowest BMD with 0.511 g/cm2 (±0.17 g/cm2), followed by the upper neck region with 0.546 g/cm2 (±0.16 g/cm2), trochanteric region with 0.685 g/cm2 (±0.19 g/cm2) and the femoral neck with 0.813 g/cm2 (±0.2 g/cm2). Peak torque of DensiProbe® in the femoral head was 3.48 Nm (±2.34 Nm). Load to failure was 4050.2 N (±1586.7 N). The highest correlation of peak torque measured by Densi Probe® and load to failure was found in the femoral neck (r=0.64, P&lt;0.001). The overall correlation of mechanical peak torque with T-score was r=0.60 (P&lt;0.001). A correlation was found between mechanical peak torque, load to failure of bone and BMD <em>in vitro</em>. Trabecular strength of bone and bone mineral density are different aspects of bone strength, but a correlation was found between them. Mechanical peak torque as measured may contribute additional information about bone strength, especially in the perioperative testing.

Cervical Spine Computed Tomography Hounsfield Units Accurately Predict Low Bone Mineral Density of the Femoral Neck

2020 ◽  
Vol 33 (2) ◽  
pp. E58-E62
Author(s):  
Donald F. Colantonio ◽  
Sameer K. Saxena ◽  
Alan Vanier ◽  
Daniel Rodkey ◽  
Scott Tintle ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Bone Mineral Density ◽  
Cervical Spine ◽  
Femoral Neck ◽  
Bone Mineral ◽  
Mineral Density ◽  
Hounsfield Units ◽  
Low Bone Mineral Density

scholarly journals The correlation between volumetric bone mineral density and morphological parameters of the proximal femur and clinical outcomes in ankylosing spondylitis patients with hip involvement

2022 ◽  
Vol 23 (1) ◽  
Author(s):  
Xinfeng Wu ◽  
Liang Zhang ◽  
Tao Bian ◽  
Siliang Man ◽  
Hongchao Li ◽  
...  
Keyword(s):  
Bone Mineral Density ◽  
Ankylosing Spondylitis ◽  
Femoral Neck ◽  
Bone Mineral ◽  
Proximal Femur ◽  
Volumetric Bone Mineral Density ◽  
Morphological Parameters ◽  
Mineral Density ◽  
T Score ◽  
Group A

Abstract Background To measure volumetric bone mineral density (vBMD) with quantitative computed tomography (QCT) in the proximal femur of ankylosing spondylitis (AS) patients with hip involvement and analyze their correlations with radiographic and clinical parameters. Methods Sixty-five AS inpatients were enrolled in this study. The bone mineral density was measured by QCT and dual-energy x-ray absorptiometry (DXA), respectively. The morphological parameters of the proximal femur were measured on digital anteroposterior (AP) radiographs of the pelvis. The correlations between them were analyzed by SPSS software. Results The average trabecular vBMD measured at the femoral neck was 136.38 ± 25.58 mg/cm3. According to the BASRI-Hip score, group A consisted of 39 hips (0–2 score) and group B consisted of 26 hips (3–4 score). There were significant differences regarding trabecular CTXA equivalent T-score between group A and B at the femoral neck (p = 0.004); intertrochanteric region (p < 0.001) and greater trochanter (p = 0.001). The trabecular CTXA equivalent T-score at femoral neck had a negative correlation with disease duration (r = − 0.311, p = 0.012) and with CBR (r = − 0.319, p = 0.010). Conclusions The low trabecular bone density at the site of the hip was associated with the duration of disease progression and degree of hip involvement. Meanwhile, it had a correlation with hip function status although we failed to confirm a significant relationship between hip vBMD and disease activity.

Low bone mineral density and fat-free mass in younger patients with a femoral neck fracture

2015 ◽  
Vol 45 (8) ◽  
pp. 800-806 ◽  
Author(s):  
Amer N. Al-Ani ◽  
Tommy Cederholm ◽  
Maria Sääf ◽  
Gustaf Neander ◽  
Richard Blomfeldt ◽  
...  
Keyword(s):  
Bone Mineral Density ◽  
Femoral Neck ◽  
Femoral Neck Fracture ◽  
Bone Mineral ◽  
Fat Free Mass ◽  
Mineral Density ◽  
Younger Patients ◽  
Low Bone Mineral Density ◽  
Neck Fracture
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