Dấu hiệu bịt (Obturator sign)

Mô tả: Pain on internal rotation of the thigh.

Nguyên nhân: • Appendicitis

Cơ chế: The inflamed appendix lies in contact with the obturator internus muscle and, thus, when the leg is rotated, the appendix is stretched and irritated.

Ý nghĩa lâm sàng: The obturator sign, if present, is valuable with a specificity of 94%, but has a sensitivity of only 8%.84 Obturator sign 481 Inflamed appendix Ischial tuberosity Caecum lliac tuberosity Greater trochanter of femur Obturator intemus muscle