Selective Determinants of Low Bone Mineral Mass in Adult Women with Anorexia Nervosa

Table 3

Bone geometry as measured by DXA in patients with anorexia nervosa and in controls.

	Patients	Controls	𝑃
Lumbar spine
BMC (g)	40.1±7.2	43.6±7.1	0.01
Area (cm^2)	44.9±4.8	42.3±4.0	0.002
BMAD (g/cm^3)	0.13±0.01	0.16±0.02	0.0001
L2 vertebral height (mm)	29.1±1.8	28.0±2.3	0.0029
L2 width: higher part (mm)	40.2±2.9	38.9±3.3	0.02
L2 width: middle part (mm)	34.8±2.7	33.8±2.4	ns
L2 width: lower part (mm)	38.5±3.2	35.3±2.9	0.001
Hip
BMC (g)/neck	4.0±0.7	4.4±0.7	0.003
Area (cm^2)/neck	5.3±0.4	5.1±0.5	0.01
BMC (g)/total hip	24.1±4.2	29.3±3.9	0.0001
Area (cm^2)/total hip	31.2±3.1	30.9±2.0	ns
Hip midline (mm)	83.7±4.6	81.0±5.0	0.002
Neck diameter (mm)	31.1±2.2	30.3±2.1	ns
BMAD (g/cm^3)	0.14±0.02	0.17±0.03	0.0001
BMC (g)/trochanter	5.4±1.1	6.3±1.3	0.0007
Area (cm^2)/trochanter	9.0±1.0	8.9±0.9	ns
Femoral shaft (mm)	27.2±2.2	26.5±2.5	ns
Internal cortical thickness (mm)	5.8±1.0	6.3±0.9	0.008
External cortical thickness (mm)	5.0±0.8	5.0±0.8	ns

Mean ± SD.