Further, 10.9% of physical therapy group and 7% of the surgical patients need further operation to release the fibrotic bundle which limited their neck movement.

• 1岁以内评断保守治疗成功的幼儿，长大后仍有10.；9%25须手术治疗；手术治疗的病例中也有7%25未能完成解决过紧的纤维化肌肉。