Head Circumference OFC

Head Circumference Lubchenco

Definition Maximum circumference of the head. Landmarks The maximum head circumference usually horizontal just above the eyebrow ridges , is measured from just above the glabella area to the area near the top of the occipital bone opisthocranion Fig. 6.1 . Position The patient should look straight ahead Fig. 6.1 . Alternative It is often easier, in young infants, to have them stay seated on an adult's lap while measuring the head circumference, and to do the measurement from behind. Remarks The...

Anterior Fontanelle Size

Anterior Fontanelle

Definition The sum of the longitudinal and transverse diameters of the anterior fontanelle along the sagittal and coronal sutures Figs. 7.24-7.28 . Landmarks The index finger should be placed as far as possible into each of the four corners of the anterior fontanelle. These four positions may be marked with a dot immediately distal to the fingertip. The longitudinal and transverse diameters may be measured directly, or a piece of white paper can be firmly pressed over the fontanelle to transfer...

Analysis of Ridge Patterns

Total Ridge Finger Count

Dermal ridge count To count the dermal ridges of a particular pattern, a line is drawn from the middle or center of the pattern to a triradius a point at which three converging patterns meet Fig. 12.5 . The number of ridges which are crossed by this line or touch the line is counted. The total dermal ridge count for the individual is the sum of the ridge count of the 10 digits. If there are two triradii, as in a whorl, the line is drawn to the most distal triradius. Arch patterns have no ridge...

Upper Facial Height Nasal Height

Nasal Spine Measurement With Caliper

Definition Distance from the root of the nose nasion to the base of the nose subnasion . Landmarks Measure from the deepest part of the nasal root nasion to the deepest point of concavity at the base of the nose subnasion , in a vertical plane Figs 7.1 and 7.13 . Instruments Sliding calipers are most accurate. A tape-measure could be used, avoiding the natural curve of the midface. Position Frankfort horizontal, with the facial profile in the vertical. Alternative If the nasal tip is long or...

Nose Classification System

Nasal Shape

The nose is remarkable in its variability, in profile, frontal plane, and from the undersurface. Details and definitions of the soft tissue and bony landmarks are available in references at the end of this chapter and are illustrated in Fig. 7.65a. A qualitative assessment of the nose should include 1. the nasofrontal angle is it normal, flat, or deep 2. the nasal root protrusion is it average, high, or low 3. the nasal bridge is it high, low, broad, beaky, or bulbous 4. the nasal tip is it...

Interalar Distance Nasal Width

Definition Distance between the most lateral aspects of the alae nasi. Landmarks Measure from the lateral-most aspect of one ala nasi to the lateral-most aspect of the ala nasi Fig. 7.72 . Instruments Spreading calipers are the most accurate instruments, although a transparent calibrated ruler or tape-measure can be substituted. Position The patient should be reclining, with the vertical. Remarks Values for nasal width from birth to age 16 years are shown in Fig. 7.73. There is tremendous...