Health encyclopaedia 健康百科全书

Health encyclopaedia - Alphabetical Topic List健康百科全书-按字母顺序排列的主题清单

Causes of Knock knee原因敲膝盖

Knock-knee is fairly normal in healthy children under the age of six and should not cause any concern.连锁膝关节是相当正常的健康儿童下，六岁以下的，并应不会引起任何的关注。 It occurs because the weight falls to the outside of the knee joint.它的发生是因为体重下降到了外面的膝关节。

At the age of three, over 20 per cent of children have at least a five cm gap between their ankles, but by the age of seven, only about one per cent of children do.在3岁，超过20 ％的儿童有至少5厘米之间的差距，他们的脚踝，而是由7岁以下的，只有约1 ％的儿童做的。 In most cases the knock knee corrects itself as the child grows: the legs gradually change shape and become straight.在大多数情况下，敲膝盖纠正本身作为儿童成长：腿，逐步改变形状，并成为直。

If the distance between the ankles is greater than 10cm or the knees are asymmetrical the child may have an underlying medical condition, such as a growth problem or a disease.如果之间的距离足踝大于10厘米或膝盖是不对称的儿童可能有一个基本的医疗条件，例如作为一个增长的问题或疾病。

Childhood diseases that can cause knock knee are rickets, scurvy and Blount’s disease.儿童疾病可以引起连锁反应膝关节是佝偻病，坏血病和blountâ € ™病。 Rickets is caused by a vitamin D deficiency; bone development is softer than normal and the legs start to bow.佝偻病是由于维生素D缺乏症;骨发育是柔软的较正常的腿开始低头。 Rickets is no longer common in the UK and does not occur in children who have a healthy diet.佝偻病的不再是共同在英国和不会出现在谁的儿童有一个健康的饮食习惯。 Blount’s disease is when the lower legs do not grow properly and the legs start to bow. blountâ € ™病是当下肢不成长，妥善和腿开始低头。

Family history of skeletal abnormality may also be a factor.家族病史的骨骼异常也可能是一个因素。 Conditions such as an uncorrected fracture of the shin bone, rheumatoid arthritis, osteoarthritis or Paget’s disease can distort the ends of the bones and cause knock knee in adults.条件，如一个未骨折的新光骨，类风湿关节炎，骨性关节炎或pagetâ € ™病可以歪曲两端的骨头和事业的连锁反应膝关节在成人中。

• Kawasaki disease 川崎病 Ketosis 酮症 Kidney failure 肾功能衰竭 Kidney infection 肾感染 Kidney stones 肾结石 Kidney transplant 肾移植 Knee replacement 膝关节置换术 Knock knee 敲膝盖 Kyphosis 脊柱后凸

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