Fig. 2From: Bone mineral density and its influencing factors in Chinese children with spinal muscular atrophy types 2 and 3BMD Z-scores trend of change in different SMA subtypes. Data are shown as mean ± standard deviation. With the change of SMA subtype from 2a -3b, the mean values of both TBLH BMD and LS BMD were gradually increasing. BMD: bone mineral density; SMA: spinal muscular atrophy; TBLH: total body less head; LS: lumbar spineBack to article page