The vertical projection of the sum of the ground reactive forces of a standing patient is not the same as the C7 plumb line: a radiographic study of the sagittal alignment of 153 asymptomatic volunteers.
Spine (Phila Pa 1976). 2006 May 15;31(11):E320-5. doi: 10.1097/01.brs.0000218263.58642.ff.
Spine (Phila Pa 1976). 2006.
PMID: 16688022