Which muscle is irritated by inflamed retrocaecal appendix: (A) Psoas major, (B) Gluteus maximus, (C) Quadratus femoris, (D) Obturator internus
Answer is A. Answer- A. Psoas majorIn children with abdominal pain, who hold their right hip in a flexed position to obtain relief from the pain, one should suspect retrocaecal appendicitis causing irritation ofthe psoas muscle.