Assertion: bone's surface | /r/HasProperty | rough
Facets:
value: for the attachment of ligaments
type: PURPOSE
Source sentences:
text: The upper surface of the greater horns are rough and close to its lateral border, and facilitates muscular attachment.
text: The anterior surface is rough, directed downward and outward, and serves for the origin of various muscles.
text: These surfaces are rough for the attachment of ligaments.
text: The lateral surface is rough, and concave.
text: The medial surface' is rough and usually convex.