ANATOMY

Detailed explanation-1: -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).

Detailed explanation-2: -The shaft of a long bone is called the diaphysis.

Detailed explanation-3: -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.

Detailed explanation-4: -The diaphysis is the shaft portion of a long bone with cortical tissue. It has bone marrow and adipose tissue.

Detailed explanation-5: -The long bone in a child is divided into four regions: the diaphysis (shaft or primary ossification centre), metaphysis (where the bone flares), physis (or growth plate) and the epiphysis (secondary ossification centre). In the adult, only the metaphysis and diaphysis are present (Figure 1).