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Ulnar collateral ligament injury : ウィキペディア英語版 | Ulnar collateral ligament injury
Ulnar collateral ligament injuries They can be classified into two categories: a slow deterioration or an acute rupture. The ulnar collateral ligament (UCL, also known as medial collateral ligament) is located on the medial side of the elbow. The UCL complex comprises three ligaments: the anterior oblique, posterior oblique and transverse ligaments. The anterior oblique ligament (AOL) attaches from the undersurface of the medial epicondyle to the medial ulnar surface slightly below the coronoid process. It is the sturdiest of the three sections within the UCL. The AOL acts as the primary restraint against valgus stress at the elbow during flexion and extension. The posterior oblique originates at the medial epicondyle and inserts along the mid-portion of the medial semilunar notch.〔 It applies more stability against valgus stress when the elbow is flexed rather than extended. The transverse ligament connects to the inferior medial coronoid process of the ulna to the medial tip of the olecranon.〔 Since it is connected to the same bone and not across the elbow joint, the transverse ligament has no contribution to the joint’s stability. ==Classification== A slow and chronic deterioration of the ulnar collateral nut ligament can be due to repetitive stress acting on the ulna. At first, pain can be bearable and can worsen to an extent where it can terminate an athlete’s career. The repetitive stress placed on the ulna causes micro tears in the ligament resulting in the loss of structural integrity over time. The acute rupture is less common compared to the slow deterioration injury. The acute rupture occurs in collisions when the elbow is in flexion such as that in a wrestling match or a tackle in football. The ulnar collateral ligament distributes over fifty percent of the medial support of the elbow. This can result in an ulnar collateral ligament injury or a dislocated elbow causing severe damage to the elbow and the radioulnar joints.
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「Ulnar collateral ligament injury」の詳細全文を読む
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