Abstract
ObjectiveIn 1971, Weiss identified a “scapula sign” comprising a defect at the inferior angle of the scapula in juveniles with vitamin D deficiency rickets, but this has been little studied since. This study aimed to explore pathological variation of this defect in juveniles with other skeletal manifestations of vitamin D deficiency rickets. Materials and methods527 juveniles, aged from birth to 12 years, from two post-medieval British assemblages were macroscopically evaluated to document the range of pathological changes at the inferior angle. Scapula maximum lengths were recorded and supplementary radiographs were assessed. ResultsBlunting, flattening or squaring of the inferior angle occurred in 34 of 155 (22%) juveniles with other indicators of rickets and occurred frequently in cases of severe active rickets. Coarsening of the border and cupping deformities were identified radiographically, as well as residual defects in healed cases. Scapula lengths in juveniles with active rickets did not consistently deviate from those expected in any age group. ConclusionsThe scapula sign is identifiable in some children with rickets. Differential diagnoses of scapula defects are important but the socio-cultural and environmental context of this sample suggests a link to vitamin D deficiency. SignificanceThis finding expands the range of pathological changes known to occur in rickets, helping to improve recognition of this condition in past groups. LimitationsSmall sample sizes prevented observation of the defect in adolescents with rickets. Defects can affect the positioning of standardised scapula length measures, complicating assessments of growth impacts. Suggestions for future researchContinued research into the range of skeletal changes that can develop in vitamin D deficiency to improve the identification of this deficiency in past groups.
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