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Poor posture occurs naturally from the stretching of the woman's abdominal muscles as the fetus grows. These muscles are less able to contract and keep the lower back in proper alignment. The pregnant woman has a different pattern of gait. The step lengthens as the pregnancy progresses, due to weight gain and changes in posture.
Endochondral ossification is responsible for development of most bones including long and short bones, [4] the bones of the axial (ribs and vertebrae) and the appendicular skeleton (e.g. upper and lower limbs), [5] the bones of the skull base (including the ethmoid and sphenoid bones) [6] and the medial end of the clavicle. [7]
Calcification is the accumulation of calcium salts in a body tissue. It normally occurs in the formation of bone, but calcium can be deposited abnormally in soft tissue, [1] [2] causing it to harden. Calcifications may be classified on whether there is mineral balance or not, and the location of the calcification. [3]
Bone tissue is a dynamic system with active metabolism. [24] Bone tissue remodelling or bone remodeling is a successive chain of old bone matrix removal and its replacement with a new one. [25] These processes make a child’s skeleton grow and extend, while childhood is characterized by bone tissue growth rather than its resorption.
A 2 kg (4.4 lb) calcified fetus was discovered in the abdomen of a 90-year-old Chilean woman. The discovery was made during an X-ray examination after the lady was brought to the hospital following a fall. The lithopedion, which is believed to have been there for 50 years, was so large and developed, it occupied the whole abdominal cavity.
The canal of the nutrient foramen is directed away from more active end of bone when one end grows more than the other. When bone grows at same rate at both ends, the nutrient artery is perpendicular to the bone. Most other bones (e.g. vertebrae) also have primary ossification centers, and bone is laid down in a similar manner. Secondary centers
He emphasizes that his results do not definitively conclude that pregnancy makes women age faster. “We have evidence that pregnancy can speed up biological aging,” he says. “And we have ...
Pregnancy- and lactation-associated osteoporosis (PLO; also known as pregnancy-related osteoporosis) is a rare early presentation of osteoporosis in which young women experience low trauma or spontaneous fractures during or soon after pregnancy or lactation. [citation needed]