Explanation:
Correct Option: C. During the acute trauma resuscitation phase, the correct anatomical placement of a pelvic binder or sheet is absolutely critical for effectively reducing pelvic volume, stabilizing the fracture fragments, and thereby promoting tamponade of massive retroperitoneal venous bleeding. Biomechanical studies and advanced trauma life support (ATLS) guidelines emphatically dictate that the binder must be centered directly over the greater trochanters of the femurs. Placing the binder too proximally, over the iliac crests or the anterior superior iliac spines (Options A and B), is a common clinical error; this high placement fails to close the pelvic ring effectively and can actually paradoxically widen the pelvic outlet or cause a purely 'folding' effect rather than the desired circumferential compression. (Ref: Routt et al., J Orthop Trauma, 2002; Bottlang et al., J Trauma, 2002)