Short bones - Short bones Short bones are found in the...

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Short bones Short bones are found in the wrist and ankle, carpals and tarsals respectively. They have no shaft, as they do not increase dramatically in size in one dimension during growth, and tend to be cuboidal in shape. They are rather like a Malteser in construction, with cancellous bone in the centre and a hard outer shell of compact bone. Flat bones Flat bones like those of the cranium or the scapula are sandwiches of spongy bone between two layers of compact bone. They are usually curved, so we can refer to an inner and outer table with diploe between them. These diploe, especially in the skull, may become pneumatised, i.e. filled with air. A ring of facial sinuses around the nose may become infected, leading to sinusitis. Irregular bones Any bones which don't fit these arbitrary categories (bones of the face, vertebrae) are referred to as irregular. Sesamoid Sesamoid bones are interesting because they occur in tendon, especially where a tendon turns a corner, and is thus exposed to friction. We shall come across these again when we talk about
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Short bones - Short bones Short bones are found in the...

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