Epiphyseal plate
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The epiphyseal plate (or epiphysial plate, or growth plate) is the cartilage plate in the long bones of children and adolescents. The longitudinal growth of these bones occurs primarily at these plates. Around the age of 17 the epiphyseal cartilage cells stop duplicating and the entire cartilage is slowly replaced by bone. Bone growth stops. Ossification of all bones is usually completed by age 25. Once the adult stage is reached, the only way to manipulate height is modifying bone length via distraction osteogenesis.
John Hunter studied growing chickens. He observed bones grew at the ends and thus demonstrated the existence of the epiphyseal plates. Hunter is considered the "father of the growth plate".[1].
Salter-Harris fractures can occur on epiphyseal plates.
External links
- epiphysial+plate at eMedicine Dictionary
- Histology at BU 02401loa - "Cartilage and Bone and Bone Histogenesis"
- Diagram at edteched.uottawa.ca
- Overview at gla.ac.uk
Musculoskeletal system, connective tissue: bone and cartilage | |
|---|---|
| Cartilage | perichondrium, fibrocartilage callus, metaphysis
cells (chondroblast, chondrocyte) types (hyaline, elastic, fibrous) |
| Bone | ossification (intramembranous, endochondral, epiphyseal plate)
cycle (osteoblast, osteoid, osteocyte, osteoclast) types (cancellous, cortical) regions (epiphysis, metaphysis, diaphysis) structure (osteon/Haversian system, Haversian canals, Volkmann's canals, endosteum, periosteum, Sharpey's fibres, enthesis, lacunae, canaliculi, trabeculae, medullary cavity, bone marrow) shapes (long, short, flat, irregular, sesamoid) |
Acknowledgement and Attribution Regarding Sources of Content
Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .

