Measurement Procedures for Infants

(1) WEIGHT

The diapered infant is placed on a clinical scale and weighed to the nearest tenth of a kilogram. The measurement is typed into the computer.

( 2 ) CROWN-SOLE LENGTH

Infant lies on back with legs extended; the head is aligned in the Frankfort Plane relative to the extended torso (the head faces forward). With the paddle blades of an automated anthropometer, measure the distance from vertex (top of head) to the heel of the right foot. An assistant is required to assure that the infant is in the correct position.

(3) CROWN-RUMP LENGTH

The infant lies on back with right leg flexed 900 to torso so that rotation of the pelvis is minimal; the head is aligned in the Frankfort Plane relative to the torso (the head faces forward). With the paddle blades of an automated anthropometer, measure the distance from vertex to the surface of the right buttock. An assistant is required to assure that the infant is in the correct position.

( 4) HEAD CIRCUMFERENCE

The infant's head is supported away from table surface. With an automated tape device, measure the circumference of the head at the level of the plane passing above the glabella (the most anterior protrusion of the forehead) and over the opisthrocranion (the most posterior protrusion from glabella on the back of the head), per- pendicular to the mid-sagittal plane. An assistant is required to assure that the infant is in the correct position.

( 5 ) HEAD BREADTH

The infant is placed in a sitting position. With the paddle blades of an automated sliding caliper, measure the maximum breadth of the head above and behind the ears. An assistant is required to assure that the infant is in the correct position.

(6 ) HEAD LENGTH

The infant's head is supported free from table surface. With an automated sliding caliper, measure the distance from glabella (most anterior protrusion of the forehead) to opisthocanion (the most posterior point from glabella or the back of the head). An assistant is required to assure that the infant is in the correct position.

( 7 ) SHOULDER BREADTH

The infant lies on back with upper arms resting against body. With the paddle blades of an automated anthropometer or sliding caliper, measure the breadth across the shoulders at a fixed pressure value. An assistant is required to assure that the infant is in the correct position.

(8) SHOULDER-ELBOW LENGTH

The infant lies on back with right upper arm resting against body and right elbow flexed 90 (degrees). With the paddle blades of an automated sliding caliper, measure the distance from the superior surface of the right shoulder to the inferior surface of the right elbow para- lell to the long axis of the upperarm. An assistant is required to assure that the infant is in the correct position.

( 9 ) UPPER ARM CIRCUMFERENCE

The infant's right arm is extended. With an automated tape device, measure the circumference perpendicular to the long axis of the upper arm midway between shoulder and elbow. An assistant is required to assure that the infant is in the correct position.

( 1 0 ) ELBOW-HAND LENGTH

The infant lies on back with right elbow flexed 900 and right hand and fingers extended. With the Paddle blades of an automated anthropometer or sliding caliper . , measure the distance from the posterior surface of the right upper arm, just above the elbow, to the tip of the middle finger of the right hand parallel to the long axis of the forearm. An assistant is required to assure that the infant is in the correct position.

(11) FOREARM CIRCUMFERENCE

The infant's riaht arm is extended. With an automated taoe device, measure the maximum circumference of the right forearm pe . rpendicular to the lona axis. An assistant is required to assure that the infant is in the correct position.

( 1 2 ) WRIST CIRCUMFERENCE

The infant's right arm is extended. With an automated tape device, measure the minimum circumference of the right wrist above the distal (ulnal@ styloid process. An assistant is required to assure that the infant is in the correct position.

( 1 3 ) HAND LENGTH

The infant's right hand is fully extended, palm up. With the paddle blades of an automated sliding caliper, measure the distance from the right wrist crease to the tiD of the middle finger parallel to the fingers. An assistant is required to assure that the infant is in the correct position.

( 1 4) HAND BREADTH

The infant's right hand is fully extended, Dalm up, thumb away (ab- ducted) from hand. With the paddle blades of an automated sliding caliper, measure the maximum width across the metacarpal-phalangeal- joints II and V (knuckles). An assistant is required to assure that the infant is in the correct position.

( 1 5 ) MINIMUM HAND CLEARANCE

The fingers of the right hand are extended and placed together so as to form the narrowest configuration. With a hand measurement board, record the smallest diameter through which the measurer can pull the infant's right hand. The measurement is typed into the computer. An assistant is required to assure that the infant is in the correct position.

( 1 6 ) MAXIMUM FIST BREADTH

The infant's right arm is extended with the hand contracted to form a fist. With the paddle blades of an automated sliding caliper, measure the maximum breadth across the knuckles and thumb of the right hand. An assistant is required to assure that the infant is in the correct Dosition.

( 1 7 ) THUMB DIAMETER

The thumb on the right hand is extended. With a finger measure- ment board, record the greatest diameter through which the first joint of the right thumb cannot pass. The measurement is typed into the computer. An assistant is required to assure that the infant is in the correct position.

(18) MIDDLE FINGER DIAMETER

The middle finger of the right hand is extended. With a finger measurer*nt board, record the greatest diameter through which the first joint of the middle finger cannot pass. The measurement is typed into the computer. An assistant is required to assure that the infant is in the correct position.

( 1 9 ) CHEST CIRCUMFERENCE

The infant lies on back. With an automated tape device, measure the circumference of the chest at the level of the nipples during normal breathing. An assistant is required to assure that the infant is in the correct position.

( 2 0 ) CHEST BREADTH

The infant lies on back with arms held away from chest. With the paddle blades of an automated anthropometer or sliding caliper, measure the breadth of the chest at the level of the nipples. An assistant is required to assure that the infant is in the correct position.

( 2 1 ) WAIST CIRCUMFERENCE

The infant lies on back with legs fully extended. With an auto- mated tape device, measure the circumference just below the level of the iliac crest and above the level of the greater trochanter in a plane perpendicular to the torso. An assistant is required to assure that the infant is in the correct position.

( 2 2 ) WAIST BREADTH

The infant lies on back with legs fully extended. With the paddle blades of an automated anthropometer or sliding caliper measure the breadth of the waist just below the level of the iliac crest and above the level of the greater trochanter at a fixed pressure value. An assistant is required to assure that the infant is in the correct position.

( 2 3 ) RUMP-SOLE LENGTH

Infant lies on left side with 901 right hip flexion and right leg fully extended. With the paddle blades of an automated anthro- pometer, measure the distance from the posterior surface of the right buttock to the heel of the right foot. An assistant is required to assure that the infant is in the correct position.

( 2 4 ) RUMP KNEE LENGTH

The infant lies on left side with 900 right hip flexion and 900 right knee flexion. With the paddle blades of an automated anthropometer, measure the distance from the posterior surface of the right buttock to the anterior surface of the right knee. An assistant is required to assure that the infant is in the correct position.

( 2 5 ) HIP CIRCUMFERENCE

The infant lies on back with legs fully extended. With an auto- mated tape device, measure the maximum circumference of the hips in a plane perpendicular to the torso. An assistant is required to assure that the infant is in the correct position.

( 26 ) HIP BREADTH

Infant lies on back with legs fully extended. With the paddle blades of an automated anthropometer or sliding caliper measure the maximum breadth across the hips at a fixed pressure value. An assistant is required to assure that the infant is in the correct position.

( 2 7 ) MID-THIGH CIRCUMFERENCE

The infant lies on back with right leg extended. With an auto- mated tape device, measure the circumference of the right leg midway between the abdomen-thigh flexure crease and the knee. An assistant is required to assure that the infant is in the correct position.

(2 8) MID-THIGH DEPTH

The infant lies on back with right leg supported free of table surface. With the paddle blades of an automated sliding caliper, measure the depth midway between the abdomen-thigh flexure crease and the knee at a fixed pressure value. An assistant is required to assure that the infant is in the correct Position.

( 2 9 ) KNEE-SOLE LENGTH

Infant lies on back with the right knee flexed 901. With the paddle blades of an automated anthropometer, measure the distance from the superior surface of the right knee to the heel of the right foot. An assistant is required to assure that the infant is in the correct position.

( 30) CALF CIRCUMFERENCE

The infant lies on back with right leg extended. With an automated tape device, measure the maximum circumference at the level of the greatest posterior protrusion of the calf. An assistant is re- quired to assure that the infant is in the correct position.

( 31 ) ANKLE CIRCUMFERENCE

The infant lies on back with right leg extended. With an auto- mated tape device, measure the minimum circumference of the ankle above the malleoli. An assistant is required to assure that the infant is in the correct position.

( 3 2 ) ANKLE BREADTH

The infant lies on back with right leg extended and supported free of table surface. With the paddle blades of an automated sliding caliper, measure the minimum breadth above the malleoli. An assistant is required to assure that the infant is in the correct position.

( 33 ) FOOT LENGTH

The infant lies on back. With the paddle blades of an automated sliding caliper, measure the distance from the heel to the longest toe of the right foot parallel to thk., long axis of the foot. An assistant is required to assure that the infant is in the correct position.

( 34) FOOT BREADTH

The infant lies on back. With the paddle blades of an automated sliding caliper, measure the maximum breadth across the ball of the right foot. An assistant is required to assure that the infant is in the correct position.