McBurney's point — the point of maximum tenderness in acute appendicitis — is located at:

• A Junction of medial one-third and lateral two-thirds of a line from the umbilicus to the right anterior superior iliac spine
• B Midpoint of a line between the umbilicus and the pubic symphysis
• C Junction of medial two-thirds and lateral one-third of a line from the umbilicus to the right anterior superior iliac spine ✓
• D 2 cm below and medial to the right anterior superior iliac spine

Explanation

McBurney's point is located one-third of the distance from the right anterior superior iliac spine (ASIS) to the umbilicus — equivalently, at the junction of the lateral one-third and medial two-thirds of this line. This corresponds to the usual base of the appendix at the ileocecal junction. In the Gridiron (McBurney's) incision for open appendicectomy, a perpendicular incision is made through McBurney's point. The Lanz incision is a transverse incision centered on McBurney's point for better cosmesis.

Reference: BD Chaurasia's Human Anatomy, 8th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.