Nack J D, Phillips R D
College of Podiatric Medicine and Surgery, University of Osteopathic Medicine and Health Sciences, Des Moines, Iowa.
Clin Podiatr Med Surg. 1990 Apr;7(2):391-7.
Abnormal shock is a major cause of chronic and overuse injuries to all aspects of the lower extremity. The two major causes of abnormal shock are (1) decreased fat pad under the calcaneus and (2) dysfunction of the subtalar joint pronation mechanism during contact. Enough literature now exists to indicate that podiatrists should provide prophylactic therapy for patients that exhibit abnormal shock during contact before symptomatology in the lower extremity or spine exhibits itself.
异常冲击是下肢各个部位慢性和过度使用损伤的主要原因。异常冲击的两个主要原因是：（1）跟骨下脂肪垫减少；（2）接触过程中距下关节旋前机制功能障碍。现有足够的文献表明，足病医生应该为在接触过程中表现出异常冲击的患者提供预防性治疗，在下肢或脊柱出现症状之前。
