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・ Olearia solandri
・ Olearia stuartii
・ Olearia suffruticosa
・ Olearia teretifolia
・ Olearia tomentosa
・ Olearia traversiorum
・ Olearia viscidula
・ Olearius
・ Oleaster
・ Oleate hydratase
・ Oleavirus
・ Oleby
・ Olechowski
・ Olecko
・ Olecko County
Olecranon
・ Olecranon bursitis
・ Olecranon fossa
・ Olecranon fracture
・ OLED
・ Oleeae
・ Olef
・ Olefin fiber
・ Olefin metathesis
・ Olefine Moe
・ Olefjorden
・ Oleg
・ Oleg (dance)
・ Oleg (ship)
・ Oleg A. Korolev


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Olecranon : ウィキペディア英語版
Olecranon

The olecranon from the ''Greek'' ''olene'' meaning elbow and ''kranon'' meaning head.〔O.D.E. 2nd edition 2005〕 is a large, thick, curved bony eminence of the forearm that projects behind the elbow. It is opposite to the cubital fossa.
==Structure==
It is situated at the upper (proximal) end of the ulna, one of the two bones in the forearm. When the hand faces forward (supination) the olecranon faces towards the back (posteriorly).
It is bent forward at the summit so as to present a prominent lip which is received into the olecranon fossa of the humerus in extension of the forearm.
Its base is contracted where it joins the body and the narrowest part of the upper end of the ulna.
Its posterior surface, directed backward, is triangular, smooth, subcutaneous, and covered by a bursa.
Its superior surface is of quadrilateral form, marked behind by a rough impression for the insertion of the Triceps brachii; and in front, near the margin, by a slight transverse groove for the attachment of part of the posterior ligament of the elbow-joint.
Its anterior surface is smooth, concave, and forms the upper part of the semilunar notch.
Its borders present continuations of the groove on the margin of the superior surface; they serve for the attachment of ligaments, viz., the back part of the ulnar collateral ligament medially, and the posterior ligament laterally.
From the medial border a part of the flexor carpi ulnaris arises; while to the lateral border the anconeus muscle is attached.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Olecranon」の詳細全文を読む



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