Embryology (ie, as is the case?)
From: http://www.pffd.org/node/219
The development of the arts is the first 2-7 weeks of fetal life. Before you develop proximal parts (ie closer to the body) of the limbs and then his hands and feet, which are formed about the seventh week [Westin, 1969]. The acetabulum, the head and neck of the femur cartillagineo develop the same fabric, which forms an opening, which will form the hips (ie the hip). The opening will increase gradually until the final form the acetabulum.
ch is important to know the proper development of the femoral head and acetabulum are dependent on each other (ie you can not have one without the other.) This is a fundamental for a correct diagnosis. In fact, analyzing the X-rays of patients below one year of age, and almost impossible to see directly the presence of the femoral head, being at that age still cartilaginous and therefore transparent to UV. The presence of an adequate acetabulum however, the bone which is already visible on the plates indicates the presence of the femoral head. Similarly, if the acetabulum is not visible (ie flat), the femoral head is not there and will not develop.
must also remember that anything that affects the femur in the developing world during the first weeks of fetal life, might also affect the knee or lower leg.
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