Infraspinous fossa

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Description:

This extensive surface covers most of the inferior two-thirds of the dorsal scapula. It is triangular, with its base merging with the spine superiorly and its apex reaching toward the inferior angle. It is a flattened surface marked by obliquely oriented ridges. The fossa provides attachment for the infraspinatus muscle. This surface communicates with the supraspinous fossa through the spinoglenoid notch.