epiphyseal plate

plate (plāt)

1. a flat structure or layer, as a thin layer of bone.

2. dental p.

3. to apply a culture medium to a Petri dish.

4. to inoculate such a plate with bacteria.

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bite plate  biteplate.

bone plate  a metal bar with perforations for the insertion of screws, used to immobilize fractured segments.

cribriform plate  fascia cribrosa.

dental plate  a plate of acrylic resin, metal, or other material, which is fitted to the shape of the mouth and serves to support artificial teeth.

dorsal plate  roof p.

epiphyseal plate  the thin plate of cartilage between the epiphysis and the metaphysis of a growing long bone.

equatorial plate  the collection of chromosomes at the equator of the spindle in mitosis.

floor plate  the unpaired ventral longitudinal zone of the neural tube.

foot plate 

1. see footplate.

2. the embryonic precursor of a foot.

growth plate  epiphyseal p.

hand plate  a flattened expansion at the end of the embryonic limb; the precursor of the hand.

medullary plate  neural p.

motor end plate  end plate.

muscle plate  myotome (2).

nail plate  nail (1).

neural plate  the thickened plate of ectoderm in the embryo that develops into the neural tube.

roof plate  the unpaired dorsal longitudinal zone of the neural tube.

tarsal plate  tarsus (2).

tympanic plate  the bony plate forming the floor and sides of the meatus auditorius.

ventral plate  floor p.

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epiphyseal plate

Etymology: Gk, epi, above, phyein, to grow, platys, flat

a thin layer of cartilage between the epiphysis, a secondary bone-forming center, and the bone shaft. The new bone forms along the plate. Epiphyseal plates remain open until late adolescence. Also called growth plate.

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epiphyseal

emanating from or pertaining to the epiphysis.

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epiphyseal aseptic necrosis

caused by (1) idiopathic primary necrosis of the epiphysis in growing small-breed dogs (Legg-Calvé-Perthes disease); (2) fracture of the femoral neck; or (3) epiphyseal slippage, particularly of the femoral head in young dogs, cats, pigs, calves and foals. The disease has a characteristic radiographic appearance.

epiphyseal cartilage

between the epiphysis and the diaphysis of long bones; growth at the cartilage is responsible for continuing growth of the bone; when growth ceases the cartilage disappears. Called also growth plate, physis.

epiphyseal detachment

see epiphysiolysis.

epiphyseal dysplasia

an inherited defect of dogs characterized by very short limbs and early degenerative arthropathy. Called also chondrodystrophia fetalis and pseudoachondroplastic dysplasia of Miniature poodles. A similar histological lesion occurs in multiple epiphyseal dysplasia in Beagles.

epiphyseal fracture

one involving the epiphysis. See also salter classification.

epiphyseal plate

the thin plate of cartilage between the epiphysis and the shaft of a long bone; it is the site of growth in length and is obliterated by epiphyseal closure. Called also growth plate, physis.

epiphyseal scar

on radiographs, the radiodense band seen at the junction of the epiphysis and metaphysis, which represents the closed physis.