Seckel syndrome

Seckel syndrome is a type of microcephalic primordial dwarfism that is characterized by a proportionate dwarfism of prenatal onset, a severe microcephaly, a typical dysmorphic face (bird-like), and mild to severe intellectual disability.

Proximal femoral epiphysiolysis

Slipped capital femoral epiphysis is defined as a posterior and inferior slippage of the proximal epiphysis of the femur onto the metaphysis (femoral neck), occurring through the physeal plate during the early adolescent growth spurt.

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PMID (PMCID)
7201238	MIXED_SAMPLE	Child
	Studies of microcephalic primordial dwarfism II: the osteodysplastic type II of primordial dwarfism.
	Majewski F, Ranke M, Schinzel A. Am J Med Genet. 1982;12(1):23-35.
	Differences from the Seckel syndrome include disproportionate shortness of forearms and legs in the first years of life, brachymesophalangy, brachymetacarpy I, V-shaped flare of at least the distal femoral metaphyses, triangular shape of the distal femoral epiphyses, a high and narrow pelvis, proximal femoral epiphysiolysis, and coxa vara.