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Fig. 2 | Annals of Intensive Care

Fig. 2

From: Clinical review: peripheral muscular ultrasound in the ICU

Fig. 2

Muscle cross-sectional area. This figure depicts the cross-sectional area of the rectus femoris perpendicular to its longitudinal axis. The quadriceps femoris is a group of muscles composed by three vastus muscles (medialis, intermedius, and lateralis) and the rectus femoris which presents a proximal insertion in the anterior inferior iliac spine and other insertion in the supra-acetabular sulcus. Left side: standardized level of ultrasound scan of the lower limb; in the supine position, the probe should be placed at 2/5 of an imaginary line between the anterior parts of the thigh from the anterior inferior iliac spine to the midpoint of the proximal border of the patella. Right side: the figure depicts the cross-sectional area (red circle) of the rectus femoris (RF) perpendicular to its longitudinal axis. VI vastus intermedius, VM vastus medialis, VL vastus lateralis

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