Extractions: March of Dimes Greenberg Center for Skeletal Dysplasias ... Johns Hopkins Department of Orthopaedic Surgery Little People of America, Inc. Association for Children with Russell Silver Syndrome, Inc. Association Quebecoise des Personnes de Petite Taille Billy Barty Foundation ... Turner Syndrome Society of Canada
THE Achondroplasia There are today over 300 forms of dwarfism, achondroplasia is one ofthem. achondroplasia is the most common form of short stature. http://www.gisselmann.dk/Achondroplasia/achondroplasia_s.htm
Extractions: There are today over 300 forms of dwarfism, achondroplasia is one of them. Achondroplasia is the most common form of short stature. It occurs in approximately 1 in 26,000 to 1 in 40,000 births. The characteristic features of achondroplasia are apparent at birth. These include typical facial features, disproportionate short stature, and rhizomelic (the proximal ends of the limbs) shortening. Diagnosis of achondroplasia is made by physical exam and skeletal x-rays. Most individuals have normal intelligence. Infants and children often have motor delays but cognitive delays are not present. The facial features include a large head with a prominent forehead. The midface is often small with a flat nasal bridge and narrow nasal passages. In infancy and childhood, middle ear infections often occur because of the small nasal passages and Eustachian tube dysfunction. If the ear infections are left untreated, hearing loss can occur. "Ear tubes" are probably indicated for a child with multiple ear infections. The jaw appears to be prominent. Occasionally dental crowding can occur since the jaw is small. Respiratory problems can occur in infants and children. Airway obstruction can be "central" in origin (due to foramen magnum compression) or "obstructive" in origin (due to narrowed nasal passages). Symptoms of airway obstruction include snoring, sleeping with the neck in a hyperextended position, or apnea. A sleep study is done if these symptoms exist to determine the cause of the airway obstruction. Treatment depends on the type of obstruction. If central obstruction is present, a foramen magnum decompression is performed. If obstructive airway obstruction is present, therapy can include tonsillectomy, adenoidectomy, or tracheostomy placement.
Achondroplasia, HG's Homepage-English Version It's Cool to be little, about a disability named achondroplasia, Tobe a person with short staturein Denmark. This page uses http://www.gisselmann.dk/Achondroplasia/english_version.htm
Extractions: The Human Growth Foundation is a nonprofit volunteer organization. Its mission is to help individuals with growth-related disorders, their families, and health-care professionals through education, research, and advocacy. It is composed of concerned parents and friends of children with growth problems and interested health professionals. Its objectives include: This booklet was written by Charles I. Scott Jr., MD. This edition was revised and edited by Clair A. Francomano, MD; William Horton, MD; Patricia Rieser, FNP-C; Ruth E. Ricker; and the Education Committee of the Human Growth Foundation. Publication sponsored by Human Growth Foundation and the National Center for Human Genome Research. Revised August 1996. In memory of Eric Vonderlieth There are many conditions and diseases that can cause short stature. Some of these conditions involve a primary bone disorder the bones do not grow and develop normally. These conditions are called
Johns Hopkins Orthopaedic Surgery: Pediatrics / Achondroplasia Patient Guide to achondroplasia. What is achondroplasia? achondroplasia refers to the abnormal development of cartilage ( chondro ). http://www.hopkinsmedicine.org/orthopedicsurgery/peds/achondroplasia.html
Extractions: "Dyplasia" means abnormal development. "Achondroplasia" refers to the abnormal development of cartilage ("chondro"). Because the skeleton develops by the ossification of cartilage, this leads to an abnormal development of the bones, most commonly causing them to be much shorter than normal. Achondroplasia is the most common of all skeletal dysplasias. This condition leads to patients attaining a full grown height under four feet. The greatest shortening occurs in the humerus (the bone between the shoulder and the elbow) and the femur (the bone between the hip and the knee). There may also be underdevelopment of the face. What causes achondroplasia? Achondroplasia is a genetic disease. This means that a gene that directs a specific process in the body does not work properly. In this particular condition, a protein in the body called the "Fibroblast Growth Factor Receptor" begins to function abnormally. The result is that the growth of bones, which normally occurs in the cartilage of the growth plate, is slowed. This leads to shorter bones, abnormally shaped bones, and shorter stature.
Achondroplasia This is a technical description of the dwarfing conditions known as achondroplasia.Greenberg Center for Skeletal Dysplasias. achondroplasia. http://www.hopkinsmedicine.org/greenberg.center/achon.htm
Extractions: Greenberg Center for Skeletal Dysplasias Achondroplasia Achondroplasia is the most common form of short-limb dwarfism. It occurs in approximately 1 in 26,000 to 1 in 40,000 births. The characteristic features of achondroplasia are apparent at birth. These include typical facial features, disproportionate short stature, and rhizomelic (the proximal ends of the limbs) shortening. Diagnosis of achondroplasia is made by physical exam and skeletal x-rays. Most individuals have normal intelligence. Infants and children often have motor delays but cognitive delays are not present. A special infant developmental chart has been made for children with achondroplasia. Final adult height is in the range of 4 feet. Special achondroplasia growth curves have also been made. These should be used by the child's pediatrician to monitor growth and development. The facial features include a large head with a prominent forehead. The midface is often small with a flat nasal bridge and narrow nasal passages. In infancy and childhood, middle ear infections often occur because of the small nasal passages and Eustachian tube dysfunction. If the ear infections are left untreated, hearing loss can occur. "Ear tubes" are probably indicated for a child with multiple ear infections. The jaw appears to be prominent. Occasionally dental crowding can occur since the jaw is small. Respiratory problems can occur in infants and children. Airway obstruction can be "central" in origin (due to foramen magnum compression) or "obstructive" in origin (due to narrowed nasal passages). Symptoms of airway obstruction include snoring, sleeping with the neck in a hyperextended position, or apnea. A sleep study is done if these symptoms exist to determine the cause of the airway obstruction. Treatment depends on the type of obstruction. I f central obstruction is present, a foramen magnum decompression is performed (see below). If obstructive airway obstruction is present, therapy can include tonsillectomy, adenoidectomy, or tracheostomy placement.
The Family Village / Library / Achondroplasia Library A B. achondroplasia. Web Sites. The Teddy Bear Foundation Forachondroplasia. The MAGIC Foundation for Children's Growth Includes http://www.familyvillage.wisc.edu/lib_achondroplasia.html
Extractions: Website: http://www.magicfoundation.org/ This is a national non-profit organization providing support and education regarding growth disorders in children and related adult disorders, including adult GHD. The MAGIC Foundation is dedicated to helping children whose physical growth is affected by a medical problem, by assisting families of afflicted children through local support groups, public education/awareness, newsletters, specialty divisions (such as the Growth Hormone Deficiency Division), and programs for the children (pen pals/newsletters/birthday club). MAGIC publishes a quarterly newsletter The Magic Touch that is free with membership or in case of financial need membership is free. The children produce a newsletter of their own called
Family Village -- Growth Disorders Difference to a Little Person. Finally, the LPRF has a collection of newspaper articlesregarding dwarfism, a book Human achondroplasiaA Multidisciplinary http://www.familyvillage.wisc.edu/lib_grow.htm
Extractions: Website: http://www.genetic.org/hgf/ This foundation helps individuals with growth-related disorders, their families, and health care professionals through education, research, and advocacy. HGF has available reading material for growth-related disorders, there is a nominal charge for more than one of each item. It also has a list of books that may be purchased. It publishes a monthly newsletter and collects information on physicians and research that is accessible to members. Little People's Research Fund, Inc. (LPRF) Fax: (410) 494-0062 This organization supports research into the disabling conditions of skeletal dysplasia (dwarfism), promotes patient care, and education of the medical community, as well as the general public. It assists families by sponsoring clinics in various states in which patients receive free consultation, examination, and follow-up attention. LPRF funds research on the orthopaedic disabilities associated with dwarfism , provides funds for direct patient care/services, educates the public about the difficulties faced by Little People, sponsors clinics and where possible, assists financially with braces and other prosthesis.
Achondroplasia Heterozygous achondroplasia is the prototypical and most common rhizomelicdwarfism syndrome. Although the disease is autosomal http://www.stevensorenson.com/residents6/achondroplasia.htm
Extractions: Home Up Neurofibromatosis Pyknodysostosis ... Ollier disease [ Achondroplasia ] Diastrophic dwarfism Chondrodysplasia punctata Thanatophoric dwarfism Asphyxiating thoracic dysplasia ... Dyschondrosteoses Heterozygous achondroplasia is the prototypical and most common rhizomelic dwarfism syndrome. Although the disease is autosomal dominant in transmission, approximately 80 - 90 % of cases are sporadic, reflecting mutations. The genetic defect lies at the fibroblast growth factor-3 gene, but in a different location than thanatophoric dwarfism. This results in defective endochondral bone formation with resultant shortening of tubular bones. The shaft caliber is less affected because periosteal intramembraneous bone formation is not affected. The incidence of the disease is 1 in approximately 30,000 to 60,000 births. Females are affected more than males. The offspring of two achondroplasts may produce a hereditary form of the disease known as homozygous achondroplasia. This is a lethal form of the disease in the neonatal period. Patients with achondroplasia are of normal intelligence but may have delay in reaching pediatric milestones. Three percent have hydrocephalus. In addition, skull abnormalities may lead to a small foramen magnum, leading to spinal cord compression. Hearing problems may result from multiple ear infections in childhood due to skull abnormalities.
Extractions: Home About Links Index ... Editor's Choice Paid Advertisement (click above). Please see the privacy statement Endocrinology Growth Assorted Pages Delayed Growth Calculation of Growth Delay Growth Delay Onset Determination Achondroplasia ... Risser Sign Growth Delay Onset Determination Book Home Page Cardiovascular Medicine Dental Dermatology Emergency Medicine Endocrinology Gastroenterology General Medicine Geriatric Medicine Gynecology Hematology and Oncology HIV Infectious Disease Jokes Laboratory Neonatology Nephrology Neurology Obstetrics Ophthalmology Orthopedics Otolaryngology Pediatrics Pharmacology Prevention Psychiatry Pulmonology Radiology Rheumatology Sports Medicine Surgery Urology Chapter Endocrinology Index Adrenal Disease General Cardiovascular Medicine Diabetes Mellitus Examination Ophthalmology Geriatric Medicine Growth Hematology and Oncology Hypoglycemia Laboratory Metabolism Neonatology Obesity Obstetrics Parathyroid Disease Pediatrics Pharmacology Pituitary Disease Prevention Radiology Nephrology Sex Sports Medicine Surgery Symptom Evaluation Thyroid Disease Page Growth Index Short Short Calculation Short Onset Short Achondroplasia Short Constitutional Short Familial Tall Tall Cerebral Gigantism Intrauterine Growth Retardation Genetic or chromosomal abnormality Transplacental infectious disease ( TORCH Virus Malnutrition Hypoxia Toxins Alcohol Nicotine Substance Abuse Medications Phenytoin Birth causes Birth asphyxia Birth Trauma Hypoglycemia Prolonged Neonatal Jaundice Panhypopituitarism Childhood causes See Failure to Thrive Causes Search other websites for this topic
Achondroplasia achondroplasia. The disorder is caused by a malfunction in the process that convertscartilage into bone. achondroplasia can usually be detected at birth. http://www.rush.edu/worldbook/articles/001000a/001000026.html
Extractions: Synonyms, Key Words, and Related Terms: short stature, chondrodystrophy, skeletal dysplasia, osteochondrodysplasia, disproportionately short stature, dwarfism, rhizomelic shortening of limbs, disproportionately long trunk, trident hands, midfacial hypoplasia, prominent forehead, frontal bossing, thoracolumbar gibbus, megalencephaly, caudal narrowing of interpedicular spaces, chondrodysplasia Author Information Introduction Clinical Differentials ... Bibliography AUTHOR INFORMATION Section 1 of 12 Authored by Joo-Hee Park, DO , Clinical Assistant Instructor, Department of Pediatrics, State University of New York Downstate Medical Center Coauthored by Robert Wallerstein, MD , Chief, Genetics Service, Department of Pediatrics, Hackensack University Medical Center Joo-Hee Park, DO, is a member of the following medical societies: American Academy of Pediatrics Edited by James Bowman, MD , Senior Scholar of Maclean Center for Clinical Medical Ethics, Professor Emeritus, Department of Pathology, University of Chicago; Mary L Windle, PharmD
HealthlinkUSA Achondroplasia Links medical and health related topics. FindWhat. Click here for page 1of achondroplasia information from the HealthlinkUSA directory. http://www.healthlinkusa.com/1ent.htm
Achondroplasia; Treatment, Prevention, Cure achondroplasiaSearch information from many of the best achondroplasia health sites. Clickhere to go to the next page of achondroplasia links 1 2 3 4 Next http://www.healthlinkusa.com/content/1.html
Achondroplasia achondroplasia. Definition. achondroplasia is a disease in which there is defectivegrowth in length of the bones that are formed by enchondral ossification. http://imc.gsm.com/integrated/msk/mspath/enneking/sect02/achondro.html
Extractions: About Table of Contents Diseases of Growth Help Definition Natural History Radiographic Features Microscopic Features ... References Achondroplasia is a disease in which there is defective growth in length of the bones that are formed by enchondral ossification. Achondroplasia, from the pathophysiologic viewpoint, is a misnomer since the name implies absence of cartilaginous growth or formation when, in fact, some cartilaginous growth does take place. A more precise name would be hypochondroplasia; however, since it is widely used in the medical literature, the misnomer will be perpetuated in this context. The disease is congenital and familial, being an autosomal dominant . It is a systemic defect in the zone of chondroblast proliferation in the physeal growth plates. As a result, the bones preformed in cartilage are markedly foreshortened in length while the bones that form by membranous ossification (skull, facial bones) or by apophyseal growth (ilium, os calcis) are normal . The remainder of the physeal growth mechanism (columniation, hypertrophy, degeneration, calcification and ossification) take place normally although in significantly lesser amounts. Achondroplasia is the result of a quantitative loss in number of cells formed rather than the formation of abnormal tissue. Since the growth in diameter of the tubular bones comes from subperiosteal membranous ossification, the diameter of the bones is normal. The results, then, of achondroplasia are short, thick, tubular bones producing short stature with disproportionately-shortened extremities but a normal-sized skull.
ACHONDROPLASIA Features Listed For achondroplasia. McKusick 100800. Beaked/wedgedvertebrae; Hypoplastic ilia; Macrocephaly; Narrow sacrosciatic notch; http://www.hgmp.mrc.ac.uk/dhmhd-bin/hum-look-up?17
Cn - Achondroplasia Features Listed For cn achondroplasia. Cleft palate; Cranial bones, generalabnormalities; Mouse - short tail; Stature/length short, prenatal onset; http://www.hgmp.mrc.ac.uk/dhmhd-bin/mous-look-up?56
ThirdAge - Adam - Achondroplasia achondroplasia. Definition An inherited dwarfism. Causes, incidence, and riskfactors achondroplasia is an inherited disorder of bone growth. It http://www.thirdage.com/health/adam/ency/article/001577.htm
Extractions: document.write(''); document.write(''); document.write(''); document.write(''); document.write(''); document.write(''); document.write(''); document.write(''); Activities Computers Family Tree Health ... Prevention Definition: An inherited disorder of bone growth that causes the most common type of dwarfism Causes, incidence, and risk factors: Achondroplasia is an inherited disorder of bone growth. It is one of the group of disorders that are collectively called chondrodystrophies or osteochondrodysplasias. The disorder causes a type of dwarfism that is recognized by its characteristic normal to large-sized head, shortened arms and legs (especially the upper arm and thigh), a normal-sized trunk, and waddling gait . Achondroplasia is the most common type of dwarfism. Achondroplasia is inherited as an autosomal dominant trait. However, the majority of cases, approximately 80%, appear as spontaneous mutations. If one parent has achondroplasia, the infant has a 50% chance of inheriting the disorder. If both parents have the condition, the infant's chances of being affected increase to 75%.
Achondroplasia HOME achondroplasia. Health Supervision for Children With achondroplasia;Handling The Newborn And Young Infant With achondroplasia; http://www.bdid.com/achondroplasia.htm
