Development
The larger part of the scapula undergoes membranous ossification.. Some of the outer parts of the scapula are cartilaginous at birth, and would therefore undergo endochondral ossification .
The head, processes, and the thickened parts of the bone, contain cancellous tissue; the rest consists of a thin layer of compact tissue.
The central part of the supraspinatus fossa and the upper part of the infraspinatous fossa, but especially the former, are usually so thin in humans as to be semitransparent; occasionally the bone is found wanting in this situation, and the adjacent muscles are separated only by fibrous tissue.
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