Are you interested in the human body and want to know about humerus bone anatomy? The humerus is a long bone of the upper appendage, which reaches out from the shoulder to the elbow.
The proximal area of the humerus explains with the glenoid fossa of the scapula, framing the glenohumeral joint. Distally, at the elbow joint, the humerus expresses with the leader of the range and the trochlear score of the ulna.
In this article, we will discuss humerus bone anatomy. Its hard tourist spots and clinical relationships.
The proximal humerus is set apart by a head, anatomical neck, careful neck, more prominent and lesser tubercles and intertubercular sulcus (a tubercle is a round knob, and implies the connection site of a muscle or tendon).
The upper end of the humerus comprises of the head. These appearances medially, upwards and in reverse and is isolated from the more noteworthy and lesser tubercle by the anatomical neck.
The more noteworthy tubercle is found along the side on the humerus. It has a foremost and back face. The more prominent tubercle fills in as connection site for three of the rotator sleeve muscles – supraspinatus, infraspinatus and teres minor – they join predominant, center and mediocre aspects individually.
The lesser tubercle is considerably littler and all the more medially situated on the bone. It just has a front face. It gives a connection to the last rotator sleeve muscle; subscapularis.
Isolating the two tubercles is a profound sorrow, called the intertubercular sulcus, or furrow. The ligament of the long head of biceps brachii rises up out of the shoulder joint and goes through this section.
The pole of the humerus is the site of connection for different muscles. Cross-segment sees uncover it to be round proximally and leveled distally.
On the horizontal side of the humeral shaft is a roughened surface where the deltoid muscle connects. This is referred to is as the deltoid tuberosity.
The outspread (or winding) groove is a shallow despondency that runs slantingly down the back surface of the humerus, parallel to the deltoid tuberosity. The spiral nerve and profundabrachii conduit lie in this depression.
The accompanying muscles join to the humerus along its pole:
Posteriorly – average and sidelong leaders of the triceps (the winding score differentiates their separate starting points).
The horizontal and average outskirts of the distal humerus shape average and parallel supraepicondylar edges. The horizontal supraepicondylar edge is more roughened, giving the site of the basic root of the lower arm extensor muscles.
Promptly distal to the supraepicondylar edges are extracapsular projections of bone, the sidelong and average epicondyles. Both can be palpated at the elbow. The average is the bigger of the two and expands all the more distally. The ulnar nerve goes in a section on the back part of the average epicondyle where it is discernable.
Distally, the trochlea is found medially and expands onto the back part of the bone. Horizontal to the trochlea is the capitulum, which explains with the range.
Additionally situated on the distal bit of the humerus are three miseries, known as the coronoid, outspread and olecranon fossae. They oblige the lower arm bones amid development at the elbow.