Hip dysplasia: the causes and manifestations

Hip dysplasia: the causes and manifestations.  Photo from www.sciencephoto.c

Hip dysplasia — a violation of the hip joint, the main component of which is the wrong spatial orientation of the head femur ("Hip" part of the joint) with respect to the acetabulum ("pelvic" component of the joint), leading to a breach of the support function of the limb.

There are 3 degrees of dysplasia hip:

  • Predvyvih (I grade dysplasia) — underdevelopment of the hip without displacement of the femoral head relative to the acetabulum.
  • Subluxation(II grade dysplasia) — underdevelopment of the hip joint with a partial displacement of the femoral head relative to the acetabulum.
  • Dislocation(III grade dysplasia) — underdevelopment hip with full offset of the femoral head relative to the glenoid cavity.

 An extreme manifestation of hip dysplasia is congenital dislocation of the hip.

Dysplasia of the hip (or both joints) often detected in children in the first year of life, with the girls this pathology occurs five times more often than boys.

The causes of dysplasia

Development of congenital disorders locomotor systems contribute to:

  • heredity;
  • hormonal disorders in women during pregnancy;
  • breech presentation, oligohydramnios, large fruit. In this case, the child is reduced range of motion in the hip joints, which prevents their normal development;
  • gynecological diseases mother (uterine fibroids, adhesions in the uterus and other processes that may impede the movement of the child in utero);
  • Often, hip dislocation occurs in low birthweight (less than 2500 g) infants.

What are the symptoms?

Some signs of hip dislocation can see mom kid. Note the following symptoms:

  • one leg shorter than the other child;
  • Additional fold on hip;
  • asymmetry of the gluteal folds and buttocks;
  • asymmetry in abduction feet;
  • legs bent at the knees can not take full (knees touch the child table);
  • click that occurs when the legs bend at the knee and hip joints.

In identifying these symptoms as quickly as possible to show the kid orthopedist.


According to the magazine "9 months" Number in February 2002

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