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- $Unique_ID{BRK03664}
- $Pretitle{}
- $Title{Diastrophic Dysplasia}
- $Subject{Diastrophic Dysplasia Cherub Dwarf Chondrodystrophy with Clubfeet
- Diastrophic Dwarfism Arthrogryposis Multiplex Congenita Achondroplasia}
- $Volume{}
- $Log{}
-
- Copyright (C) 1987, 1989 National Organization for Rare Disorders, Inc.
-
- 482:
- Diastrophic Dysplasia
-
- ** IMPORTANT **
- It is possible the main title of the article (Diastrophic Dysplasia) is
- not the name you expected. Please check the SYNONYMS listing on the next
- page to find alternate names, disorder subdivisions, and related disorders
- covered by this article.
-
- Synonyms
-
- Cherub Dwarf
- Chondrodystrophy with Clubfeet
- Diastrophic Dwarfism
-
- Information on the following disorders can be found in the Related
- Disorders section of this report:
-
- Achondroplasia
- Arthrogryposis Multiplex Congenita
-
- General Discussion
-
- ** REMINDER **
- The information contained in the Rare Disease Database is provided for
- educational purposes only. It should not be used for diagnostic or treatment
- purposes. If you wish to obtain more information about this disorder, please
- contact your personal physician and/or the agencies listed in the "Resources"
- section of this report.
-
- Diastrophic Dysplasia is a hereditary growth disorder characterized by
- abnormally curved bones, short limbs, joint and hand deformities, and
- clubfeet.
-
- Symptoms
-
- Symptoms of Diastrophic Dysplasia are present at birth. Short stature,
- progressive curvature of the spine (scoliosis) often associated with a
- hunchback (kyphosis), are major features of this disorder. An open spine in
- the neck area (cervical spina bifida) occurs in most patients with
- Diastrophic Dysplasia. The pelvic bones as well as the head of the thigh
- bone, and the tailbone, may also be deformed. Shortened fingers are present,
- the small bones in the hand tend to grow together (synostosis of proximal
- interphalangeal joints), and the thumb is extended in a so-called "hitchhiker
- position". When the hip or knee joint bear weight, they tend to dislocate.
- Severe clubfeet on both sides of the body may also occur.
-
- Cyst-like swellings on the outer ear during early infancy may later
- develop into cauliflower-like shapes with or without the cartilage turning
- into bony tissue (ossification). More than 25% of patients with Diastrophic
- Dysplasia have a cleft palate. Occasionally a broad nasal bridge, a beak-
- shaped nose, and a benign tumor made up of blood vessels (hemangioma) on the
- face may also occur. Intelligence is usually normal.
-
- Causes
-
- Diastrophic Dysplasia is a hereditary disorder transmitted by autosomal
- recessive genes. (Human traits including the classic genetic diseases, are
- the product of the interaction of two genes for that condition, one received
- from the father and one from the mother. In recessive disorders, the
- condition does not appear unless a person inherits the same defective gene
- from each parent. If one receives one normal gene and one gene for the
- disease, the person will be a carrier for the disease, but usually will show
- no symptoms. The risk of transmitting the disease to the children of a
- couple, both of whom are carriers for a recessive disorder, is twenty-five
- percent. Fifty percent of their children will be carriers, but healthy as
- described above. Twenty-five percent of their children will receive both
- normal genes, one from each parent and will be genetically normal.)
-
- Affected Population
-
- Diastrophic Dysplasia is a rare disorder that is present at birth. It
- affects males and females in equal numbers.
-
- Related Disorders
-
- Achondroplasia is a skeletal defect which belongs to the group of congenital
- abnormalities known as "chondrodystrophies". These disorders affect the
- manner in which cartilage is converted to bone. Skeletal malformation and
- dwarfism result from growth abnormalities in the bone or cartilage. Symptoms
- of Achondroplasia begin before birth. Life expectancy for children with
- Achondroplasia is usually normal. (For more information on this disorder,
- choose "Achondroplasia" as your search term in the Rare Disease Database.)
-
- Arthrogryposis Multiplex Congenita is characterized by reduced mobility
- of multiple joints at birth due to proliferation of fibrous tissue (fibrous
- ankylosis). (For more information on this disorder, "Arthrogryposis" as your
- search term in the Rare Disease Database.)
-
- Therapies: Standard
-
- Treatment of Diastrophic Dysplasia consists of orthopedic management using
- surgery, braces, casts, and/or manipulations. Appropriate dental treatment
- and surgical closure of the cleft palate are utilized when necessary.
- Corticosteroids are injected into the ear to treat the deformity of the
- cartilage of the affected infant.
-
- Genetic counseling is recommended to families of children with
- Diastrophic Dystrophy.
-
- Therapies: Investigational
-
- This disease entry is based upon medical information available through
- December 1988. Since NORD's resources are limited, it is not possible to
- keep every entry in the Rare Disease Database completely current and
- accurate. Please check with the agencies listed in the Resources section for
- the most current information about this disorder.
-
- Resources
-
- For more information on Diastrophic Dysplasia, please contact:
-
- National Organization for Rare Disorders (NORD)
- P.O. Box 8923
- New Fairfield, CT 06812-1783
- (203) 746-6518
-
- The National Arthritis and Musculoskeletal and Skin Diseases Information
- Clearinghouse
- Box AMS
- Bethesda, MD 20892
- (301) 495-4484
-
- Little People of America
- Box AMS
- San Bruno, CA 94066
- (415) 589-0695
-
- The Magic Foundation
- 1327 N. Harlem Ave.
- Oak Park, IL 60302
- (708) 383-0808
-
- Human Growth Foundation (HGF)
- 7777 Leesburg Pike
- P.O. Box 3090
- Falls Church, VA 22043
- (703) 883-1773
- (800) 451-6434
-
- Short Stature Foundation
- 17200 Jamboree Rd., Suite J
- Irvine, CA 92714-5828
- (714) 474-4554
- 800-24 DWARF
-
- Association for Research into Restricted Growth
- 2 Mount Court
- 81 Central Hill
- London SE 19 1 BS
- England
- 01-678-2984
-
- International Center for Skeletal Dysplasia
- St. Joseph Hospital
- 7620 York Road
- Towson, MD 21204
- (301) 337-1250
-
- For information on genetics and genetic counseling referrals, please
- contact:
-
- March of Dimes Birth Defects Foundation
- 1275 Mamaroneck Avenue
- White Plains, NY 10605
- (914) 428-7100
-
- Alliance of Genetic Support Groups
- 35 Wisconsin Circle, Suite 440
- Chevy Chase, MD 20815
- (800) 336-GENE
- (301) 652-5553
-
- References
-
- MENDELIAN INHERITANCE IN MAN, 7th ed: Victor A. McKusick; Johns Hopkins
- University Press, 1986. P. 932.
-
- DISORDERS OF THE SPINE IN DIASTROPHIC DWARFISM: D. Bethem, et al.;
- Journal Bone Joint Surg (Am) (1980: issue 62(4)). Pp. 529-536.
-
-