Bone mineral density and its influencing factors in Chinese children with spinal muscular atrophy types 2 and 3

Background Patients with spinal muscular atrophy (SMA) are at risk of decreased bone mineral density (BMD). The bone health status of Chinese patients with SMA has been poorly studied. We aimed to evaluate the BMD of children with SMA types 2 and 3 in mainland China and investigate its influencing factors. Methods Forty patients with a mean age of 5.5 years affected by SMA types 2 and 3 ( n = 22 and n = 18, respectively) were enrolled between...