Limb fractures in a defined population. I. Frequency and distribution.
Limb fractures in a defined population. I. Frequency and distribution.
复制标题
特定人群的肢体骨折。
作者：
Garraway Wm;Stauffer Rn;L. T. Kurland;W. O'Fallon
这项以人群为基础的研究显示，在3年的时间里发生了2519例肢体骨折，所有肢体骨折的年龄调整发生率为每10万人年1596例。上肢骨折呈双峰年龄分布，较下肢骨折多见，下肢骨折呈j型年龄分布。最常见的解剖部位是桡骨和尺骨的下端。93%的病例单独发生肢体骨折；只有4%被归类为开放，总数的一半以上是关闭和未迁移的。骨折在一天中的各个时间段均匀分布。骨折最常见的发生地点是家中，最重要的直接原因是跌倒，尤其是女性。各种各样的体育活动是骨折的主要原因，尤其是在年轻男性中。潜在的骨骼病理是罕见的，其他的原因是更重要的，特别是在老年人。随着年龄的增长，干骺端骨折与干骺端骨折的比例增加，这表明老年人松质骨的相对损失，但没有证据表明老年女性与老年男性相比，骨骼对冲击力的抵抗力降低。
This population-based study revealed that 2,519 limb fractures occurring during a 3-year period produced an age-adjusted incidence rate for all limb fractures of 1,596 per 100,000 person-years. Fractures of the upper limb had a bimodal age distribution and were commoner than those of the lower limb, which had a J-shaped age distribution. The most frequent anatomic site was the lower end of the radius and ulna. Limb fractures occurred as solitary events in 93% of cases; only 4% were classified as open and more than half of the total were closed and undisplaced. Fractures were distributed evenly throughout all time periods of the day. The commonest place of fracture occurrence was the home, and the most important direct cause was falls, particularly in females. A wide range of sports activities were a major source of fractures, particularly in younger males. Underlying bone pathology was uncommon, other contributory causes being more important, particularly in the elderly. The increased ratio of metaphyseal to diaphyseal fractures with age indicated a relative loss of cancellous bone in the elderly, but no evidence was found to suggest that elderly women had reduced resistance of bone to impact forces in comparison with elderly men.