Beals and Horton present a systematic clinical framework for diagnosing skeletal dysplasias — a heterogeneous group of over 150 conditions caused by mutations in genes governing skeletal growth. The paper focuses on how to reach a diagnosis using height, body proportions, dysmorphic features, targeted radiographs, and family history, illustrated through representative conditions including achondroplasia, hypochondroplasia, and multiple exostosis.
When you see a child with disproportionate short stature, start with height, upper-to-lower segment ratio, arm span, and a five-view skeletal survey — this combination localizes whether epiphysis, metaphysis, diaphysis, or spine is affected and narrows the differential without expensive testing.
Adult height is a surprisingly reliable discriminator between phenotypically similar dysplasias, so documenting or projecting it should be part of every evaluation.
Beals and Horton present a systematic clinical framework for diagnosing skeletal dysplasias — a heterogeneous group of over 150 conditions caused by mutations in genes governing skeletal growth. The paper focuses on how to reach a diagnosis using height, body proportions, dysmorphic features, targeted radiographs, and family history, illustrated through representative conditions including achondroplasia, hypochondroplasia, and multiple exostosis.
When you see a child with disproportionate short stature, start with height, upper-to-lower segment ratio, arm span, and a five-view skeletal survey — this combination localizes whether epiphysis, metaphysis, diaphysis, or spine is affected and narrows the differential without expensive testing.
Adult height is a surprisingly reliable discriminator between phenotypically similar dysplasias, so documenting or projecting it should be part of every evaluation.