SPINAL MUSCULAR ATROPHY Spinal muscular atrophy is a genetic disorder characterized by weakness and wasting (atrophy) in muscles used for movement (skeletal muscles). It is caused by a loss of specialized nerve cells, called motor neurons that control muscle movement. ... They have extremely weak muscle tone (hypotonia) at birth. #humsaathhai #DBLsocialwelfarefoundation #PhysiodeptGHMC
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