He B, Liu G, Nan G
1 Ministry of Education Key Laboratory of Child Development and Disorders, Key Laboratory of Pediatrics in Chongqing, Chongqing International Science and Technology Cooperation Centre for Child Development and Disorders, China.
2 Department of Orthopaedics Children's Hospital of Chongqing Medical University, China.
J Hand Surg Eur Vol. 2017 Jun;42(5):516-522. doi: 10.1177/1753193417691747. Epub 2017 Feb 14.
We describe Wassel type IV-D thumb duplication anatomy after surgery on 11 affected children (12 hands, seven boys (eight hands) and four girls). We studied the structure and course of the flexor pollicis longus tendon and its action at the joint. Four patients had secondary deformity associated with an absent A2 pulley and a tendon that clung to the radial side of a small thumb. In patients with primary deformity, the flexor tendon sheath became membranous in the A2 area and attached to neighbouring sites on the opposite side of the proximal phalanx. In the proximal A2 area, the tendon divided - one division attached on the ulnar side of the distal phalanx base; the other, the base of the radial side. There was slight ulnar angulation of the distal phalanx on the radial portion of the duplication and slight ulnar angulation on the radial portion.
V.
我们描述了11例患病儿童（12只手，7名男孩（8只手）和4名女孩）接受手术后的瓦塞尔IV - D型拇指重复畸形的解剖结构。我们研究了拇长屈肌腱的结构、走行及其在关节处的作用。4例患者存在与A2滑车缺如及附着于小拇指桡侧的肌腱相关的继发性畸形。在原发性畸形患者中，屈肌腱鞘在A2区域变为膜性，并附着于近节指骨相对侧的相邻部位。在近端A2区域，肌腱分叉——一个分支附着于远节指骨基底的尺侧；另一个分支附着于桡侧基底。重复畸形桡侧部分的远节指骨有轻微尺侧成角，桡侧部分有轻微尺侧成角。
V级。
