COLUMN FRACTURES
The anterior column extends from the pubic symphysis, along the superior pubic ramus, across the acetabulum to the anterior part of the ilium. On the x-ray it is shown in profile by the iliopectineal line in the oblique view. Anterior column fractures are uncommon, do not involve the weightbearing area and have a good prognosis.
The posterior column extends from the ischium, across the posterior aspect of the acetabular socket to the sciatic notch and the posterior part of the innominate bone. In an iliac oblique x-ray it is seen in profile as the ilioischial line. A posterior column fracture usually runs upwards from the obturator foramen into the sciatic notch, separating the posterior ischiopubic column of bone and breaking the weightbearing part of the acetabulum. It is usually associated with a posterior dislocation of the hip and may injure the sciatic nerve. Treatment is more urgent and usually involves internal fixation to obtain a stable joint.
---from 《Apley’s System of Orthopaedics and Fractures》
重点词汇整理：
profile /ˈproʊfaɪl/n. 侧面；轮廓；外形；剖面；简况
iliopectineal line 髂耻线
Anterior column fractures are uncommon, do not involve the weightbearing area and have a good prognosis.前柱骨折不常见，不累及负重区，预后良好。
ischium /'ɪskɪəm/n. [解剖] 坐骨
sciatic /saɪˈætɪk/adj. 坐骨的；坐骨神经的；髋部的
notch /nɑːtʃ/n. 刻痕，凹口；等级；峡谷vt. 赢得；用刻痕计算；在…上刻凹痕
sciatic notch 坐骨切迹
innominate/ɪˈnɑːmənɪt/adj. 无名的；匿名的
ilioischial line.髂腰线
obturator foramen闭孔
obturator /'ɔbtjuəreitə/n. 闭孔肌adj. 闭孔肌的，闭孔的
foramen/fə'reimen/n. [生物] 孔，[生物] 小孔；胚孔
ischiopubic坐耻骨
sciatic nerve坐骨神经
百度翻译：
柱状骨折
前柱从耻骨联合处，沿耻骨上支，穿过髋臼至髂骨前部。在x光片上，斜视图中由髂腹肌线显示。前柱骨折不常见，不累及负重区，预后良好。
后柱从坐骨开始，穿过髋臼窝的后部，延伸至坐骨切迹和无名骨后部。髂骨斜位x线平片显示髂腰线。后柱骨折通常从闭孔孔向上进入坐骨切迹，分离坐骨后柱，并破坏髋臼负重部分。通常伴有髋关节后脱位，并可能损伤脊髓神经。治疗更为紧急，通常需要内固定以获得稳定的关节。
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