肌性斜颈大多是因颈部一侧胸锁乳突肌发生病变而引起的,多见于新生儿。婴儿出生时,由于受到产道的压力和产钳的牵拉,颈部侧面的胸锁乳突肌常易受伤出血,血肿机化后则可形成棱形肿物;或由于妊娠时胎儿头位不正偏向一侧,而阻碍该侧胸锁乳突肌的供血,引起供血性病变。以上这两种情况都可以导致新生儿的肌性斜颈。病儿通常表现为头部向一侧倾斜,而脸部则歪向对侧。勉强拨正后,又会恢复原位。头部所倾向的一侧为胸锁乳突 Muscular torticollis mostly due to the side of the neck sternocleidomastoid muscle lesions caused, more common in newborns. Baby born, due to the pressure of the birth canal and the traction forceps, neck sternocleidomastoid muscle often vulnerable to bleeding, hematoma machine can form prismatic tumor; or due to fetal head position during pregnancy is not positive bias While blocking the side of the sternocleidomastoid muscle blood supply, causing blood lesions. Both of these conditions can cause muscular torticollis in newborns. Sick children usually show the head tilted to one side, while the face is crooked to the opposite side. Reluctantly allocated, will be restored to its original position. The head is inclined to the side of the sternocleidomastoid