Measurement of quadriceps muscle thickness and subcutaneous tissue thickness in normal children by real‐time ultrasound imaging

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Abstract
A reproducible ultrasound imaging technique is described for measurement of midthigh muscle and subcutaneous tissue thickness. We studied 276 children including those attending hospital outpatient clinics with non-neurological disorders, newborn babies on the obstetric wards, and children attending a local primary school. There was no significant difference in muscle depth between girls and boys, but girls had a significantly greater subcutaneous tissue depth than boys. The results of this study provide a basis for the study of muscle atrophy and hypertrophy in neuromuscular disease.