Sanitate S S, Meerschaert J R
William Beaumont Hospital, Royal Oak, MI.
Arch Phys Med Rehabil. 1993 Aug;74(8):886-9. doi: 10.1016/0003-9993(93)90017-5.
Orthostatic tremor is a 14 to 16Hz (range 7 to 36Hz) tremor of uncertain etiology elicited within seconds of an isometric contraction. It is described as a shaking, cramping of the lower extremities upon standing and is relieved with movement or sitting. Typically patients are unable to stand in place for long periods of time secondary to instability and fatigue. A 73-year-old woman with orthostatic tremor following a history of head trauma is presented. Recognition of the characteristic history and electromyographic findings may lead to appropriate treatment for this annoying and sometimes incapacitating disorder.
直立性震颤是一种频率为14至16赫兹（范围为7至36赫兹）的震颤，病因不明，在等长收缩后数秒内诱发。它被描述为站立时下肢的摇晃、痉挛，活动或坐下后可缓解。通常，患者由于不稳定和疲劳而无法长时间站立。本文介绍了一名有头部外伤史后出现直立性震颤的73岁女性。认识到其特征性病史和肌电图表现可能会为这种令人烦恼且有时会导致失能的疾病带来恰当的治疗。
