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Age from birth (years)

Figure 9.10 Thoracic index, both sexes, birth to 16 years. From Feingold and Bossert (1974), by permission.

Chapter 9 Chest and Trunk Sternal Length

Definition Length of the sternum.

Landmarks Measure from the top of the manubrium to the lowest palpable edge of the sternum (Fig. 9.11).

Instruments Tape-measure.

Position Patient should be standing upright. Infants should be measured lying supine.

Alternative Patient may be recumbent.

Remarks Normal values are presented in Figs. 9.12 and 9.13. Longitudinal overgrowth of the ribs produces an anterior chest deformity, either depression (pectus excavatum) or protrusion (pectus carinatum). Both defects may be present in the same patient.

Pitfalls The presence of a pectus deformity will distort the linear distance unless the tape is worked along the sternum in contact with the surface of the skin.

Figure 9.11 Measuring sternal length.

2728 29 30 31 32 33 34 35 36 37 38 39 40 41 Gestational age (weeks)

Figure 9.12 Sternal length, both sexes, at birth. From Sivan et al. (1983), by permission.

2728 29 30 31 32 33 34 35 36 37 38 39 40 41 Gestational age (weeks)

Figure 9.12 Sternal length, both sexes, at birth. From Sivan et al. (1983), by permission.

Figure 9.13 Sternal length, both sexes, birth to 13 years. From Feingold and Bossert (1974), by permission.

Figure 9.13 Sternal length, both sexes, birth to 13 years. From Feingold and Bossert (1974), by permission.

Pregnancy And Childbirth

Pregnancy And Childbirth

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