Diaphysis

The diaphysis is the main or midsection (shaft) of a long bone. It is made up of cortical bone and usually contains bone marrow and adipose tissue (fat).

Diaphysis
A long bone, with diaphysis labeled at right.
Details
Pronunciation/daɪˈæfɪsɪs/[1][2]
Part ofLong bones
Identifiers
MeSHD018483
TAA02.0.00.017
FMA24013
Anatomical terminology

It is a middle tubular part composed of compact bone which surrounds a central marrow cavity which contains red or yellow marrow. In diaphysis, primary ossification occurs.

Ewing's sarcoma tends to occur at the diaphysis.[3]

Additional images
  • Long bone
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See also

References
  1. OED 2nd edition, 1989, as /daɪˈæfɪsɪs/.
  2. Entry "diaphysis" in Merriam-Webster Online Dictionary.
  3. Physical Medicine and Rehabilitation Board Review, Cuccurullo


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