加载中…
个人资料
  • 博客等级:
  • 博客积分:
  • 博客访问:
  • 关注人气:
  • 获赠金笔:0支
  • 赠出金笔:0支
  • 荣誉徽章:
正文 字体大小:

绿枝性骨折与GOLF

(2009-06-17 16:44:59)
标签:

golf

技术

体育

分类: 技术
Definition: Because a child's bones are much more pliable than adult bone, an incomplete, or 'greenstick,' fracture may occur. A "greenstick fracture" means that one side of the fracture has broken and one side is bent; therefore it is classified as an incomplete break.

The name for a greenstick fracture comes from the analogy of breaking a young, fresh tree branch. The broken branch snaps on one side (the outer side of the bend), while the inner side is bent, and still in continuity. Most often the greenstick fracture must be bent back into the proper position (called a "reduction") and then casted for about six weeks. Greenstick fractures can take a long time to heal because they tend to occur in the middle, slower growing parts of bone.

 

Practically, greenstick fractures are treated by correcting the rotational and angular malalignment
simultaneously by reversing the mechanism of injury. Recurrence of deformity can occur without
proper immobilization technique and the refracture rate after greenstick fracture is higher than with
completely displace fractures. Complete shaft fractures can be managed with cast immobilization
(Jones). Rotation of the distal fragment is matched to the proximal; most will be in neutral position
or some supination. The radial bow should be restored. The cast should be molded to widen the
interosseous space, and the ulnar border straight. Subsidence of initial swelling often necessitates a
cast change. Casting in extension can sometimes maintain position better than elbow flexion
(Shaer). Ten degrees (10() of angulation is acceptable at any age, in children < 15-20 degrees is
acceptable. Proximal fractures seem to remodel less than distal shaft fractures. A loss of 20-30
degrees of rotation does not impair function; loss of supination is more problematic than loss of
pronation. Residual angulation of < 10 degrees does not result in functional loss of motion at any
age. Children < 9 years of age can remodel up to 15 degrees of angulation, and 45 degrees of
angulation. (Noonan) However, factors other than angulation can result in restriction of motion.

0

阅读 收藏 喜欢 打印举报/Report
  

新浪BLOG意见反馈留言板 欢迎批评指正

新浪简介 | About Sina | 广告服务 | 联系我们 | 招聘信息 | 网站律师 | SINA English | 产品答疑

新浪公司 版权所有