Dwarfism is a condition in which a person, animal or plant is much below the ordinary size of the species. When applied to people, it implies not just extreme shortness, but a degree of disproportion. Dwarfism is now rarely used as a medical term and is sometimes (but not always) considered impolite or pejorative. Today, the term little person tends to be preferred.

GoldBamboo

... Achondroplasia is an inherited disorder of bone growth. Although achondroplasia literally means "without cartilage formation," in this disorder the problem is not in forming cartilage but in converting it to bone, particularly in the long bones of the arms and legs.

All persons with achondroplasia are short. The average height of an adult male with achondroplasia is 131 cm (52 inches, or 4 foot 4), and the average height for adult females is 124 cm (49 inches, or 4 foot 1). A person with achondroplasia has an average-size trunk, short arms and legs with disproportionately short upper arms and thighs, a slightly enlarged head, and a prominent forehead. The person's fingers are short, and the ring finger and middle finger may diverge, giving the hand a three-pronged (trident) appearance. People with achondroplasia are generally of normal intelligence.

Health problems associated with achondroplasia can include breathing problems (apnea), obesity, and ear infections. The head is usually large (macrocephaly) and may have enlarged fluid spaces within the brain (ventriculomegaly). Only rarely is this associated with increased pressure in the brain (hydrocephalus). Adults with achondroplasia usually develop a pronounced and permanent sway of the lower back (lordosis) and bowed legs. Older individuals often have back pain, which can cause difficulty with walking. ...

Genetics Home Reference - more...

Achondroplasia is a type of genetic disorder that is a common cause of dwarf ...
Wikipedia - [full article]

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Dwarfism Other

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Collagenopathy, types II and XI
... The type II and XI collagenopathies are a group of disorders that affect connective tissue, the tissue that supports the body's joints and organs. These disorders are caused by defects in type II ...
Source: Genetics Home Reference

Thanatophoric dysplasia
... Thanatophoric dysplasia is a severe inherited skeletal disorder characterized by extremely short limbs and folds of extra skin on the arms and legs. Genetic changes are related to the following types ...
Source: Genetics Home Reference

   

Dwarfism Articles

  • Achondrogenesis, type 2
    ... Achondrogenesis, type 2 is a severe, inherited disorder of bone growth. The disorder is characterized by a short body and limbs and a lack of bone formation in the spine and pelvis. Achondrogenesis, t...
  • Achondroplasia
    ... Achondroplasia is an inherited disorder of bone growth. Although achondroplasia literally means "without cartilage formation," in this disorder the problem is not in forming cartilage but in convertin...
  • Collagenopathy, types II and XI
    ... The type II and XI collagenopathies are a group of disorders that affect connective tissue, the tissue that supports the body's joints and organs. These disorders are caused by defects in type II ...
  • Genes and Disease: Diastrophic dysplasia
    ... Diastrophic dysplasia (DTD) is a rare growth disorder in which patients are usually short, have club feet, and have malformed handsmand joints. Although found in all populations, it is particularly pr...
  • Genes and Disease: Ellis-van Creveld syndrome
    ... Ellis-van Creveld syndrome, also known as "chondroectodermal dysplasia," is a rare genetic disorder characterized by short-limb dwarfism, polydactyly (additional fingers or toes), malformati...
  • Hypochondrogenesis
    ... Hypochondrogenesis is a severe, inherited disorder of bone growth. This condition is characterized by a short body and limbs and abnormal bone formation in the spine and pelvis. Hypochondrogenesis is ...
  • Hypochondroplasia
    ... Hypochondroplasia is a form of short-limbed dwarfism. This condition affects the conversion of cartilage into bone (a process called ossification), particularly in the long bones of the arms and legs....
  • Kniest dysplasia
    ... Kniest dysplasia is an inherited disorder of bone growth. The condition is characterized by short stature (dwarfism), enlarged joints and other skeletal abnormalities, and problems with vision and hea...
  • SADDAN
    ... SADDAN (severe achondroplasia with developmental delay and acanthosis nigricans) is a rare inherited disorder of bone growth characterized by skeletal, brain, and skin abnormalities. All people with t...
  • Spondyloepimetaphyseal dysplasia, Strudwick type
    ... Spondyloepimetaphyseal dysplasia, Strudwick type is an inherited disorder of bone growth that results in short stature (dwarfism), characteristic skeletal abnormalities, and problems with vision. The ...

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