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Clinical assessment of head orientation profile development and its relationship with positional plagiocephaly in healthy term infants - A prospective study.

Abstract：

BACKGROUND:Positional plagiocephaly refers to atypical development of an uneven head shape with asymmetrical head orientation as a post-natal risk factor. The development of the head orientation profile and its relationship with positional plagiocephaly are lacking. OBJECTIVES:To explore the head orientation profile development and its relationship with positional plagiocephaly in healthy full term infants. METHODS:A prospective observational study including 94 infants was conducted. Head orientation measures including head orientation duration, head orientation strength and latency to turn were conducted at three, six and nine weeks of age. Plagiocephaly outcome was measured by modified Cranial Vault Asymmetry Index at nine weeks. RESULTS:Lateral head orientation duration predominated at three weeks, mean (standard deviation) (right=40 [21.7]%; left=41 [21.5]%; midline=19 [19.9]%). It decreased bilaterally in favour of midline positioning at nine weeks (right=30 [22.3]%; left=24 [22.0]%; midline=46 [27]%. Although head orientation strength was similar across the three ages after accounting for side, head orientation strength to left was decreased from three to nine weeks (p=0.031; 95% CI: 0.12-2.06). There was a reduction in left-consistent with increase in left-bias from 3weeks to 6weeks of age (p=0.011). Positional plagiocephaly at nine weeks was associated with head orientation duration-right (p<0.001; r(2)=0.20); head orientation duration-left (p<0.001; r(2)=0.17); head orientation strength at three and six weeks (p<0.001; r(2)=0.22), but not latency to turn. CONCLUSIONS:Healthy infants show progressive change from symmetrical lateral head orientation to midline orientation from three to nine weeks. There is association of head orientation duration and strength with positional plagiocephaly.

journal_name

Early Hum Dev

journal_title

Early human development

authors

Leung AYF,Mandrusiak A,Watter P,Gavranich J,Johnston LM

doi

10.1016/j.earlhumdev.2016.03.001

subject

Has Abstract

pub_date

2016-05-01 00:00:00

pages

31-38

eissn

0378-3782

issn

1872-6232

pii

S0378-3782(16)30005-6

journal_volume

pub_type

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Clinical assessment of head orientation profile development and its relationship with positional plagiocephaly in healthy term infants - A prospective study.