A condition occurring in fetal life in which cartilage is absorbed during the development of bone tissue resulting in a disproportionate growth of the trunk and extremities producing achondroplastic dwarfism.
An inherited condition in which the long bones in the arms and legs do not grow fully while the rest of the bones in the body grow as usual, resulting in dwarfism.
Achondroplasia is the most common form of skeletal dysplasia or chondrodystrophy. It is a bone disorder that is characterized by a defect in the formation of the cartilage of the long bones. People with achondroplasia often refer to themselves as dwarfs or little people. Achondroplasia usually results from a spontaneous mutation (chemical change) within a single gene. The condition may be passed on to future generations. For example, a couple with one achondroplasic spouse and an average-statured spouse has a 50% chance of having an average-statured child.
A type of bone disorder that leads to abnormal growth of the skull and the long bones of the arms and legs, resulting in short stature, or dwarfism, though the trunk is more nearly normal size; also called chondrodystropy or fetal rickets. In achondroplasia, the tips of the long bones, the epiphyses, are blocked from further growth because connecting cartilage prematurely turns to bone, in severe cases beginning during fetal development. This results in short, thick, often bowed arms and legs; protruding forehead; spinal disorders such as lordosis (swayback) and kyphosis (humpback); short, stubby fingers widely separated between third and fourth fingers (called trident fingers), and loose joints.
Inherited disorder in which a defect in cartilage and bone formation results in a form of dwarfism characterized by short limbs on a normal trunk; also called chondrodystrophy.
A common genetic disorder of bone growth that is usually evident at birth. Children with achondroplasia have short arms and legs, particularly upper arms and thighs; large heads with prominent foreheads and noses that are flat at the bridge between the eyes; curved lower spines; bowed lower legs; short stubby fingers; short, flat feet; and poor muscle tone.
An inherited disorder in which the bones of the arms and legs fail to grow to normal size due to a defect in both cartilage and bone. It results in a type of ‘dwarfism characterized by short limbs, a normal-sized head and body, and normal intelligence.
The commonest form of inherited retarded growth. It is a dominant hereditary disorder of endochondral ossification, caused by mutations of fibroblast growth factor receptor 3 genes. The long bones of the arms and legs fail to grow properly, while the trunk and head develop normally. Achondroplasia affects both sexes and, while many infants are stillborn or die soon after birth, those who survive have normal intelligence, a normal expectation of life and good health.
The most common form of short-limbed dwarfism, caused by a point mutation in a fibroblast growth receptor and characterized by impairment in the formation of cartilage at the epiphyses of long bones.
Achondroplasia is an uncommon genetic condition characterized by impaired bone growth, resulting in a diminished stature. Individuals with achondroplasia exhibit shortened limbs, a proportionally well-developed trunk, and a head of typical size, except for a prominent forehead.
The condition is attributed to a defect in a dominant gene, although it frequently arises as a spontaneous mutation rather than being inherited from parents. The primary impact is observed in the long bones of the arms and legs. In individuals with achondroplasia, the cartilage that connects each bone to its epiphysis, the growing area at its tip, prematurely ossifies, impeding further growth of the limbs.
Achondroplasia is typically apparent at birth or becomes evident within the first year of life, and currently, no treatments exist to modify its course. It is important to note that intelligence and sexual development remain unaffected, and individuals with achondroplasia generally have a lifespan comparable to that of the general population.
A congenital disorder caused by abnormal development of cartilage and growing bones in the limbs. This leads to the bone ends fusing prematurely with the bone shaft, inhibiting growth and resulting in dwarfism. While the torso grows almost normally, the limbs are significantly shorter. Despite their small stature, these individuals usually have normal intelligence and are both strong and agile. Many of the dwarfs seen in circuses have this condition, also known as fetal rickets.