问题 单项选择题

男,50岁,因交通事故致左髋部疼痛、畸形,查体见:左下肢呈内收短缩屈曲畸形,左下肢足尖指向右足背,首先应考虑的诊断是()

A.骨盆骨折

B.股骨颈骨折

C.股骨干骨折

D.髋关节后脱位

E.髋关节前脱位

答案

参考答案:D

解析:交通事故致左髋部疼痛、畸形,有明显外伤史。查体见左下肢呈内收短缩屈曲畸形,左下肢足尖指向右足背,符合左髋关节后脱位典型的临床表现。髋关节前脱位者,患肢呈外展外旋和屈曲畸形,根据典型的畸形表现,不难区分前脱位和后脱位。股骨颈骨折患者,由于骨折远端失去了关节囊及髂股韧带的稳定作用,附着于大转子的臀中、小肌和臀大肌的牵拉和附着于小转子的髂腰肌和内收肌群的牵拉,患肢可出现外旋畸形,一般在45°~60°之间。若外旋畸形达到90°,应怀疑有转子间骨折。

阅读理解

阅读理解。

      Some day you may go to the moon. A tall rocket will take you into space. The rocket flies a long

way to a space station. You will stop there for a short time. Then a big spaceship will take you to the

moon.

      About three days later,the ship slowly goes down and gets to the moon. You are now on the moon,

but you can not leave your spaceship. You must put on a space suit for the moon.It is very hot in the day

and very cold at night.If you don't wear a space suit,you can't live there. You jump out of the spaceship

and begin to walk.The moon is much smaller than the earth. The things on the moon are lighter than those

on the earth. You jump high in the air every time you take a step.

     The moon moves slowly, so one day on the moon is as long as two weeks on the earth and one night

is just as long as two weeks on the earth. It never rains on the moon, and everything on the moon is dry.

There are no trees or other living things of any kind. There is nothing to do there. The earth is a far better

 place to live on,but scientists are trying to make the best of the moon.

1. How can you go into space? By  __      .

A. plane                        

B. spaceship

C. rocket                        

D. space suit

2. How can you get to the moon?

A. By rocket I can go into space.

B. It will take me a long time to get to the moon by rocket.

C. The rocket will take me to the space station and by spaceship I will get there.

D. A and C.

3. Which is right?

A. Days are longer but nights are shorter on the moon.

B. Days are shorter but nights are longer on the moon.

C. Days are shorter than nights on the moon.

D. 28 days on the earth is as long as two days on the moon.

4. There is no life on the moon because     __   .

A. the moon moves very slowly

B. there is no air or water

C. night is hotter but day is colder

D. the moon is much smaller than the earth

5. On the moon if you are in a space suit you can move    __    than on the earth.

A .more easily            

B. harder

C. more slowly                  

D. more quickly

选择题