These individuals will have normal serum calcium, phosphorus, and urinary amino acid levels which distinguishes them from many of the rickets syndromes. Long bones will be short and curved, with widened growth plates and metaphysis 
It is named for F Schmid, who characterized it in 1949.
^Mäkitie O, Susic M, Ward L, Barclay C, Glorieux FH, Cole WG (September 2005). "Schmid type of metaphyseal chondrodysplasia and COL10A1 mutations--findings in 10 patients". Am. J. Med. Genet. A137A (3): 241–8. doi:10.1002/ajmg.a.30855. PMID16088909.