At the front of the pelvis is the psoas and at the back, the glutei or buttock muscles.

位于骨盆前侧的是腰肌，在后侧的是臀肌。

The pelvis is kept balanced because the psoas flexes the thigh, and the glutei make the thigh lengthen, or extend.

骨盆保持着平衡，因为腰肌使大腿前侧屈曲，臀肌使大腿前侧伸长或者伸展。