Sacral balance measured from the C7 plumb line: the plumb line falls behind the anterosuperior sacrum by 1 cm.
Ukuzinza kwamazantsi omqolo kulinganiswa ukusuka kuC7 kwisikali seplumb: isikali seplumb sisalele ngasemva kwethambo elikumazantsi omqolo nge-1 cm.