The greater tubercle of the humerus is one of the most lateral components of the proximal end of the humerus. It has an upper end, a lower end, and a shaft. It consists of (a) long head of biceps, wrapped in the synovial sheath and (b) ascending branch of. Articulates with trochlear notch of ulnar, medial side. The upper-end humerus is rounded to form the head. window.location.href = x+'?dc=arms-bones-interface&rm=true'; 3. HUMERUS. Humerus, long bone of the upper limb or forelimb of land vertebrates that forms the shoulder joint above, where it articulates with a lateral depression of the shoulder blade (glenoid cavity of scapula), and the elbow joint below, where it articulates with projections of the ulna and the radius. This ridge offers an origin to the lateral head of the triceps brachii. The humerus is a long bone in the arm that runs from the shoulder to the elbow. The humerus is the both the largest bone in the arm and the only bone in the upper arm. The teres minor is inserted into the lower impression on the greater tubercle. The deltoid is inserted into the deltoid tuberosity. 8. It forms ball and socket joint with the glenoid fossa of scapula. Its upper one-third is narrow and forms the floor of the intertubercular sulcus. It is the longest bone of the upper limb. The lateral epicondyle is small than the medial epicondyle. Teres major on the medial lip of the groove. physiotherapy anatomy notes bones and joints of the shoulder region (week exam) identify, classify and orientate the humerus largest bone in upper limb The Humerus is referred to as the bone of the arm and sometimes commonly referred to as the funny bone. The insertion is bilaminar. The medial supracondylar ridge is a similar ridge on the medial side. The head of the radius fits into radial fossa (above capitulum) during full flexion of the elbow. The trochlea is a pulley-shaped surface. 13. The shaft of the humerus has three borders and three surfaces. It has an upper end, a lower end, and a shaft. The humerus is the long bone in the upper arm. It connects the scapula and the two bones of the lower arm, the radius and ulna, and consists of three sections. Humerus (2): It is the longest and the largest bone of the upper limb. A nutrient foramen is seen on this surface near its middle, near the medial border. The middle one-third is crossed by the radial groove. When you are taking anatomy and physiology you will be required to know the anatomical structure locations of the humerus bone. The coronoid process of ulna fits into coronoid fossa (above the trochlea) during full flexion of the elbow. The anteromedial surface lies between the anterior and medial borders. Humerus Bone: Anatomy and clinical notes – Sciencekeys, Endocrine System – Function, Hormones and Organs, Connective Tissue | Anatomy and Physiology, Blood | Definition, Composition & Function, Blood Vessels – Definition, Anatomy & Types, The line separating the head from the rest of the upper end is called the, The narrow line separating the upper end of the humerus from the shaft is called the. The humerus is the longest and largest bone of the upper limb. 12. In some cases, a bony bar between the coronoid and olecranon fossae is perforated and forms supratrochlear. The body is cylindrical in its upper portion, and more prismatic below. The brachialis arises from the lower halves of the anteromedial and anterolateral surface of the shaft. var x = document.URL; The entire posterior surface below the spiral groove offers an origin to the medial head of the triceps brachii. The head is directed medially and backward. It is related to the axillary nerve and posterior and anterior circumflex humeral vessels. Shoulder anatomy . The contents of the intertubercular sulcus are: In the middle part, it is interrupted by the radial or spiral groove. 3. Humerus. It is continuous below with the medial supracondylar ridge. The lower end is expanded from side to side and flattened from before backward. The upper half of this surface is covered by the deltoid. Clinically it provides as the backward displacement of the lower fragment with an unduly prominent elbow, on the other hand, the three bony points of the elbow (viz. The side of the humerus can be identified by holding it vertically in such a way that: The features of the upper end of the humerus are as follows: Mnemonic: Lady between 2 Majors. These contain the pectoralis major, pectoralis minor, latissimus dorsi, teres major, and del… Muscles of the shoulder and arm attach to the humerus permitting arm to flex and extend at elbow. 6c. The humerus is the basis to which muscles insert, like the pectoralis major, the deltoid, and others.button#button{background:url(https://www.earthslab.com/wp-content/uploads/2018/09/interface-of-arms.jpg) no-repeat scroll 0 0 transparent;color:#000;cursor:pointer;font-weight:700;height:800px;padding-bottom:2px;width:100%;border-color:#e4e4e4;border-width:1px;border-style:solid;border-radius:10px;background-position:center;margin-top:20px} function changeImage() { The primary center appears in the middle of the diaphysis during the 8th week of development. MUSADIQ KHAN DURRANI 3 I. Pectoral girdle (shoulder joint) Humerus (2): It is the longest and the largest bone of the upper limb. The lateral border is prominent only at the lower end where it forms the lateral supracondylar ridge. Many powerful muscles that manipulate the upper arm at the shoulder and the forearm at the elbow are anchored to the humerus. The anterolateral surface lies between the anterior and lateral border. Latissimus dorsi in the floor of the groove. 1. The lower end of the humerus is flattened from before backwards and expanded from side to side. The surgical neck of the humerus is a short constriction in the upper end of the shaft below the greater and lesser tubercles/below the epiphyseal line. Humerus Bone and attachments 1. It articulates along with the glenoid cavity of the scapula to create the glenohumeral (shoulder) joint. It is one of the most important function of the proximal end of the humerus due to the fact that it is weaker than the more proximal regions of the bone, for this reason, it is one of the sites in which the humerus commonly fractures causing damage of associated nerves and vessels. The humeral upper extremity consists of a rounded head, a narrow neck, and two short processes. No notes for slide. The humerus is the long bone in the upper arm. Other muscles attach the clavicle, scapula, and body wall to the proximal end of the humerus. In its middle part, it forms the anterior margin of the deltoid tuberosity. The lower end of the humerus provides the following 7 features: The shaft is a long part of bone extending between its upper and lower ends. 1. The capitulum (rounded convex projection laterally) articulates along with the head of the radius. Its anterolateral part has a muscular impression. The Intertubercular Sulcus of the humerus is a vertical groove between lesser and greater tubercles. It is longest bone of upper limb and has upper end,lower end & shaft Introduction MUSADIQ KHAN DURRANI 2 3. It accommodates the olecranon process of the ulna when the elbow is extended. The upper one-third of the anterior border forms the lateral lip of the intertubercular sulcus.

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