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30 Οκτ 2023 · The posterior surface is bounded by the medial and lateral borders and is covered mostly by the medial head of the triceps brachii muscle. A ridge on the proximal third also gives attachment to the lateral head of the triceps brachii.
Humerus Bone Anatomy. We’re going to be looking at a humerus from the right arm (pictured above), with the anterior (or front) view on the left, and the posterior (or back) view on the right. Head – Let’s start with the ball-shaped section at the proximal end (or top) of the humerus, which is called the head.
Humerus: The olecranon fossa should be on the posterior side and distal (farther away from the shoulder joint. This is where the olecranon process of the ulna fits in when the elbow is straightened. Make sure the head of the humerus is placed medially. Below is the posterior view of a right humerus. Figure \(\PageIndex{3}\)
11 Αυγ 2021 · Here is how you can identify if a specific humerus bone comes from the left or right arm: First, orient the bones in a way so that the rounded head is up. Then, look for the deep olecranon fossa on the lower (distal) end.
Humerus (posterior view) by Anatomy.app. Like other long bones, the humerus is made of three main parts - a proximal end or epiphysis, a shaft or diaphysis, and a distal end or epiphysis. All of these parts contain important anatomical landmarks.
Humerus views are often done to exclude large humeral shaft fractures or suspected symptomatic metastatic lesions 1. If an occult fracture is suspected at either the proximal or distal end, it is best to do a separate elbow or shoulder series.
25 Οκτ 2024 · On the posterior side of the humerus, a small cavity known as the olecranon fossa allows the tip of the ulna, known as the olecranon, to lock into the humerus and prevent the extension of the elbow beyond 180 degrees.