Humerus | 合法醫療器材資訊網

Thehumerus(plural:humeri)isatubularboneofthearmthatarticulatesproximallyattheshoulderwiththeglenoidofthescapula,anddistallyattheelbow,with ...

The humerus (plural: humeri) is a tubular bone of the arm that articulates proximally at the shoulder with the glenoid[1] of the scapula[2], and distally at the elbow, with the radius and ulna.

The humerus begins proximally as a rounded head and joins the greater and lesser tubercles via the anatomical neck of the humerus. The surgical neck is found just inferior to the tubercles where the shaft begins. The surgical neck is a common site for fractures[3] (hence its name), while fractures of the anatomical neck are rare.

The shaft of the humerus has a cylindrical shape proximally then flattens to produce more distinct surfaces. There are three surfaces (anterolateral, anteromedial and posterior surfaces) and three borders (anterior, lateral and medial borders).

The condyle of the humerus articulates with the radius[4] and ulna[5]. I...