House B, Pansky EL; Review of Gross Anatomy 2nd ed; p377; Macmillan New York 1970

adapted from Fig 35-6; Kellam JF, Browner BD; Chapt 35, p 1121;
SKELETAL TRAUMA 2nd Ed (eds Browner BD, Jupiter JB, Levine AM, Trafton PG);
WB Saunders, Philadelphia 1998