A to Z: Achondroplasiaenparentshttps://kidshealth.org/EN/images/headers/P-khAZDictionary-enHD-AR1.jpgAchondroplasia is a genetic disorder that interferes with bone growth and causes dwarfism (short stature).Achondroplasia, achondroplastic dwarfism, skeletal dysplasia, disproportionate short stature, dwarfism, genes, genetic disorders, short stature, cartilage, ossification, growth plates, lordosis, kyphosis, hydrocephalus, obesity, spinal stenosis, knock-knees, bow-leggedness, bone development, genu varum10/11/201303/18/201909/02/2019b7bb511a-fc3c-4d30-a041-4732bcb5a653https://kidshealth.org/ws/RadyChildrens/en/parents/az-achondroplasia.html/<p><a href="https://kidshealth.org/ws/RadyChildrens/en/parents/dictionary/"><img class="right" title="Parents image" src="https://kidshealth.org/EN/images/buttons/P-atoZDictionary-enBT.jpg" alt="A to Z Dictionary 500 Go" name="5093-P_ATOZDICTIONARY2_ENBT.JPG" /></a></p> <p><strong>May also be called: Achondroplastic Dwarfism; Skeletal Dysplasia</strong></p> <p>Achondroplasia (ay-kon-druh-PLAY-zhee-uh) is a <a href="https://kidshealth.org/ws/RadyChildrens/en/parents/about-genetics.html/">genetic</a> disorder that interferes with bone growth and causes dwarfism (short stature).</p> <h3>More to Know</h3> <p>During a baby's development in the womb, much of the <a href="https://kidshealth.org/ws/RadyChildrens/en/parents/bones-muscles-joints.html/">skeleton</a> is made up of a tough, flexible tissue called cartilage. Normally, cartilage is converted to bone by a process called ossification. With achondroplasia, the body has a problem growing cartilage and converting it to bone, especially in the long bones of the arms and legs. This results in shorter bones, short stature, and often a large head with a prominent forehead. It can also cause <a href="https://kidshealth.org/ws/RadyChildrens/en/parents/az-genu-valgum.html/">knock-knees</a>, bow-leggedness, or excessive curving of the lower back (lordosis or <a href="https://kidshealth.org/ws/RadyChildrens/en/parents/kyphosis.html/">kyphosis</a>).</p> <p>Achondroplasia is the most common cause of <a href="https://kidshealth.org/ws/RadyChildrens/en/parents/dwarfism.html/">dwarfism</a>. It happens because of a mutation in a gene that develops and maintains bone tissue. Achondroplasia can be inherited from a parent, but in most cases, the mutation in the gene happens at random. Most people with achondroplasia have normal-sized parents.</p> <p>Since achondroplasia is due to a genetic mutation, those who have it may pass it on&nbsp;to their children. It can be diagnosed prenatally by ultrasound or genetic testing. There is no specific treatment for achondroplasia, but treatment might be necessary if it leads to complications such as <a href="https://kidshealth.org/ws/RadyChildrens/en/parents/az-hydrocephalus.html/">hydrocephalus</a> (fluid collecting around the brain), obesity, or <a href="https://kidshealth.org/ws/RadyChildrens/en/parents/az-spinal-stenosis.html/">spinal stenosis</a> (narrowing of the spinal canal).</p> <h3>Keep in Mind</h3> <p>There is no cure for achondroplasia, but it does not affect a person's intellectual ability or life span.</p> <p><em>All A to Z dictionary entries are regularly reviewed by KidsHealth medical experts.</em></p>
A to Z: Genu ValgumLearn about common childhood orthopedic conditions and conditions that affect the legs and knees.https://kidshealth.org/ws/RadyChildrens/en/parents/az-genu-valgum.html/1e2700d7-936c-4f16-a332-dd7b5b376806
A to Z: Kyphosis, CongenitalLearn more about congenital kyphosis, an abnormal rounding of the spine that develops before birth.https://kidshealth.org/ws/RadyChildrens/en/parents/az-kyphosis-congenital.html/5d8f8643-0505-45b6-bfce-c76eefa0d7a1
A to Z: OsteodystrophyLearn about complications of kidney and liver disease and conditions that affect bone development.https://kidshealth.org/ws/RadyChildrens/en/parents/az-osteodystrophy.html/df8ff84b-fcb7-47c7-b066-c8986dd26996
A to Z: Pituitary DwarfismPituitary dwarfism is a condition in which the pituitary gland does not make enough growth hormone, resulting in a child's slow growth pattern and unusually small stature.https://kidshealth.org/ws/RadyChildrens/en/parents/az-pituitary-dwarfism.html/902200ed-bb04-4c8b-a3f3-feb45256b728
All About GeneticsRead the basics about genetics, including how certain illnesses, or increased risks for certain illnesses, pass from generation to generation.https://kidshealth.org/ws/RadyChildrens/en/parents/about-genetics.html/0a35cfc5-5d12-46d2-b0a9-ffae83cace5c
Blount DiseaseBlount disease is a growth disorder that affects the bones of the lower leg. It causes bowing of the leg below the knee, which gets worse if it's not treated.https://kidshealth.org/ws/RadyChildrens/en/teens/blount-disease.html/b7450bea-13eb-436d-9d3b-c66742c5aedb
DwarfismA dwarf is a short-statured person whose adult height is 4 feet 10 inches or under. Find out what happens when a person has dwarfism and why some people are born with it.https://kidshealth.org/ws/RadyChildrens/en/teens/dwarfism.html/0d97a6fa-3509-4331-9ccd-8c6bd28ff360
Genetic TestingAdvances in genetic testing help doctors diagnose and treat certain illnesses. The type of test done depends on which condition a doctor checks for.https://kidshealth.org/ws/RadyChildrens/en/parents/genetics.html/cbe49a95-6833-41f4-881a-c26287c4a33c
Growth ProblemsIn most cases, teens who are small are just physically maturing a bit more slowly than their friends. Occasionally, though, there's a medical reason why some kids and teens stop growing. Find out about growth problems and how doctors can help.https://kidshealth.org/ws/RadyChildrens/en/teens/growth-hormone.html/439c5515-a0d3-425e-9e5d-4cc0fb91d8b4
KyphosisYour spine, or backbone, normally curves forward gently as it runs up your back. Sometimes, though, someone's back can be rounded too far forward, which is a condition known as kyphosis.https://kidshealth.org/ws/RadyChildrens/en/teens/kyphosis.html/7edf625a-f62d-482c-954b-fc0baae94c00
Prenatal Tests: FAQsEvery parent-to-be hopes for a healthy baby, but it can be hard not to worry. Find out what tests can keep you informed of your health — and your baby's — throughout pregnancy.https://kidshealth.org/ws/RadyChildrens/en/parents/prenatal-tests.html/eb018543-49a4-48cd-9ba3-42e027966273
kh:age-allAgesOrAgeAgnostickh:clinicalDesignation-developmentalMedicinekh:clinicalDesignation-geneticskh:genre-dictionarykh:primaryClinicalDesignation-orthopedicsNonSportsMedOrthopedics A to Zhttps://kidshealth.org/ws/RadyChildrens/en/parents/dictionary/az-ortho/9fdd6bbc-254a-4dff-be33-c4c6c66c3f6eAhttps://kidshealth.org/ws/RadyChildrens/en/parents/dictionary/a/891958dd-782d-4b8e-b649-d7c34f646eechttps://kidshealth.org/EN/images/buttons/P-atoZDictionary-enBT.jpg