71 year old male presents for an initial DXA scan, indication = age, alcohol intake. Patient meets criteria for a DXA scan by NOF (all males ≥70), Canadian guidelines (all males ≥65), NOGG guidelines (intermediate fracture risk by FRAX without BMD). No other risk factors by medical history. Weight 200 pounds, height 74.5 inches, BMI = 25.3. Because of severe degenerative disc disease, spine was uninterpretable.
- What could explain the significant discrepancy between the bone density in the femoral neck (T=-2.7) and the total hip (T=+0.9)?