骨科英文书籍精读（107）｜桡骨小头半脱位

---

SUBLUXATION OF THE RADIAL HEAD (‘PULLED ELBOW’)

In young children the elbow may be injured by pulling on the arm, usually with the forearm pronated. It is sometimes called subluxation of the radial head; more accurately, it is a subluxation of the orbicular ligament which slips up over the head of the radius into the radiocapitellar joint.

A child aged 2 or 3 years is brought with a painful, dangling arm: there is usually a history of the child being jerked by the arm and crying out in pain. The forearm is held in pronation and extension, and any attempt to supinate it is resisted. There are no x-ray changes.

A dramatic cure is achieved by forcefully supinating and then flexing the elbow; the ligament slips back with a snap.

---from 《Apley’s System of Orthopaedics and Fractures》

---

重点词汇整理：

pronate /ˈproʊˌneɪt/vt. 将手掌向下或向后转动vi. 俯身；伏身

orbicular  /ɔr'bɪkjəlɚ/adj. 圆的；球形的；完整的；环状的

orbicular ligament环状韧带

dangling arm晃来晃去的手臂 /ˈdæŋɡlɪŋ/v. 摇晃（dangle的ing形式）adj. 悬挂的；摇摆的

jerk /dʒɜːrk/n. 急拉；猛的一动

---

百度翻译：

桡骨头半脱位（“肘关节拉伤”）

在幼儿中，肘部可能会因拉动手臂而受伤，通常是前臂内翻。它有时被称为桡骨头半脱位；更准确地说，它是一种环状韧带半脱位，滑过桡骨头部进入桡骨头关节。

一个两岁或三岁的孩子带着一个痛苦的，悬垂的手臂：通常有一个孩子被手臂抽搐，痛得大叫的历史。前臂保持旋前和伸展，任何试图旋后的尝试都会遭到抵制。没有x光改变。

一个戏剧性的治疗方法是用力旋后，然后弯曲肘部；韧带迅速向后滑动。

---