Figure 3From: An MRI study on the relations between muscle atrophy, shoulder function and glenohumeral deformity in shoulders of children with obstetric brachial plexus injury Schematic representation of the three levels measured. First level mid glenoid, second and third each 5 mm in caudal direction. Area multiplied by 5 mm results in volume of section. Three volume sections added is segmental volume.Back to article page