Radial cortical porosity and bone strength. (A) Representative cross-sectional HRpQCT images of the distal radius (slice 55 of 110) in a female MGUS patient (left panel) and an age-, gender-, and BMI-matched control subject (right panel). (B) Cortical porosity and (C) apparent modulus (bone strength corrected for cross-sectional area) at the distal radius in MGUS patients and controls. Data are shown as mean ± SE adjusted for age and gender. *P < .05 for difference between groups. A, anterior; L, lateral; M, medial; MPa, megapascal; P, posterior; SE, standard error.