abstract hypotonia is a serious neurologic problem in neonatal period. although hypotonia is a nonspecific clinical finding but it is the most common motor disorder in the newborn. the objective of this study was to determine the frequency of neonatal hypotonia then to ascertain of the most common causes methods this cross –sectional prospective study was carried out on the 3281 term infants ho...

Objective: To determine the relative frequency of specific disorders that present with hypotonia in Iran. Methodology: It is a retrospective, cross–sectional study in which 107 children with hypotonia, aged one month to three years, were evaluated in Baqyiatallah Hospital between June 2003 and June 2006. Children were categorized into groups of central and peripheral hypotonia, and specific dia...

Identifying the underlying cause of congenital hypotonia remains difficult, despite advances in diagnostic laboratory and imaging techniques. Clinical evaluation strategies and standardized developmental tests can assist in differentiating hypotonia resulting from primary involvement of the upper motoneuron (central hypotonia) versus that involving the lower motoneuron and motor unit (periphera...

Hypotonia is characterized by reduced resistance to passive range of motion in joints versus weakness, which is a reduction in the maximum muscle power that can be generated. (Dubowitz, 1985; Crawford, 1992; Martin, 2005) Based on strong research evidence, central hypotonia accounts for 60% to 80% of cases of hypotonia, whereas peripheral hypotonia is the cause in about 15% to 30% of cases. Dis...

Hypotonia beginning at birth or early in the neo-natal period can be caused by one of the following: (1) infantile muscular atrophy; (2) benign congenital hypotonia; (3) symptomatic hypotonia (Walton, 1960). Infantile muscular atrophy is an established clinicopathological disorder in which muscular atrophy is secondary to disease of the motor neurone. Benign congenital hypotonia is characterize...