Department of Hand Therapy, Hand & Upper Limb Centre, St. Joseph's Health Care, London, Ontario, Canada.
J Hand Ther. 2010 Oct-Dec;23(4):420-5. doi: 10.1016/j.jht.2009.11.005. Epub 2010 Mar 1.
The relationship between the flexor and extensor systems of the digits is both intricate and balanced, such that disruption of one system can affect the entire dynamics of the finger. The imbalance may be obvious, whereas the precipitating factor may be less obvious. These authors describe a case and provide a detailed biomechanical analysis of how a flexion contracture of the distal interphalangeal joint led to a swan neck deformity in one of their patients.
手指的屈肌和伸肌系统之间的关系既复杂又平衡，一个系统的破坏会影响整个手指的动态。这种不平衡可能很明显，而引发这种不平衡的因素可能不那么明显。作者描述了一个病例，并详细分析了一个患者的末节指间关节的屈曲挛缩如何导致了天鹅颈畸形。
