A wide anastomosis connecting transversely the intercostals arteries can be observed on the thoracic segments, which loc②胸段毗邻的肋间动脉吻合主要是椎间孔周围和骶棘肌内两处；而腰段还有椎体侧面的骼腰肌和腰大肌中的吻合。
We present a case of iliopsoas abscess with a history of Child's class C liver cirrhosis.我们提出一腰大肌脓疡，经手术治疗成功出院之案例。