Diaphysis

The diaphyses (singular: diaphysis), sometimes colloquially called the shafts, are the main portions of a long bone (a bone that is longer than it is wide) and provide most of their length. 

The diaphysis has a tubular composition with a hard outer section of hard cortical bone and a central portion with cancellous bone and bone marrow cavity.

It is formed by endochondral ossification before longitudinal growth continues with secondary ossification at the physis.

See also

Anatomy: General
Terms used in radiology

Article information

rID: 42632
Section: Anatomy
Tag: bone
Synonyms or Alternate Spellings:
  • Diaphyses
  • Shaft

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Cases and figures

  • Figure 1: diagram of bone
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