The radius bone (radius) at the proximal end has the head of the radius (caput radii) with a flat depression - the glenoid fossa (fovea articularis) for articulation with the head of the condyle of the humerus.
The ulna is thickened in its upper part. At this (proximal) end is a trochlear notch (incisura trochlearis), intended for articulation with the trochlea of the humerus.
The bones of the forearm (ossa antebrachii) consist of two bones. The ulna is located medially, the radius is located laterally. These bones touch each other only at their ends, between their bodies there is an interosseous space of the forearm.
The clavicle (clavicula) is a long, S-shaped tubular bone located between the clavicular notch of the sternum medially and the acromial process of the scapula laterally.
견갑골은 납작한 삼각형 모양의 뼈입니다. 2번째에서 7번째 갈비뼈 높이에서 후외측으로 갈비뼈에 인접해 있습니다. 견갑골은 세 개의 각을 가지고 있는데, 아래각(ingulus inferior), 가쪽각(angulus lateralis), 그리고 위쪽각(angulus superior)입니다.
