humerus

Trochlea of Humerus

Trochlea of Humerus The structure indicated is the trochlea of the humerus. The distal end of the humerus consists of several features: Condyle, consisting of the capitulum and trochlea Medial and lateral epicondyles Medial and lateral supracondylar ridges Radial fossa, coronoid fossa, olecranon fossa A large central condyle which has two articular components – the capitulum is the lateral articular component and articulates with the radius, and the trochlea is the medial component which articulates with the ulna. Learn more about the anatomy of the elbow joint in this tutorial.

Trochlea

Lateral Supracondylar Ridge

Lateral Supracondylar Ridge The distal end of the humerus consists of several features: Condyle, consisting of the capitulum and trochlea Medial and lateral epicondyles Medial and lateral supracondylar ridges Radial fossa, coronoid fossa, olecranon fossa A large central condyle which has two articular components – the capitulum which articulates with the radius, and the trochlea which articulates with the ulna. Either side of the humeral condyle, are two epicondyles, the medial and lateral epicondyles superior to which are the medial and lateral supracondylar ridges. The following muscles attach to the lateral supracondylar ridge: Brachioradialis Extensor carpi radialis longus Triceps brachii …

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Lateral supracondylar ridge

Capitulum of Humerus

Capitulum of Humerus The structure indicated is the capitulum of the distal humerus. The distal end of the humerus consists of several features: Condyle, consisting of the capitulum and trochlea Medial and lateral epicondyles Medial and lateral supracondylar ridges Radial fossa, coronoid fossa, olecranon fossa A large central condyle which has two articular components – the capitulum which articulates with the head of the radius, and the trochlea which articulates with the ulna. Either side of the humeral condyle, are two epicondyles, the medial and lateral epicondyles superior to which are the medial and lateral supracondylar ridges. Learn more about …

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Capitulum of humerus

Radial Fossa

Radial Fossa The structure indicated is the radial fossa of the distal humerus. The distal end of the humerus consists of several features: Condyle, consisting of the capitulum and trochlea Medial and lateral epicondyles Medial and lateral supracondylar ridges Radial fossa, coronoid fossa, olecranon fossa A large central condyle which has two articular components – the capitulum which articulates with the radius, and the trochlea which articulates with the ulna. Either side of the humeral condyle, are two epicondyles, the medial and lateral epicondyles superior to which are the medial and lateral supracondylar ridges. There are three fossae found distally …

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radial fossa

Surgical Neck of Humerus

Surgical Neck of Humerus The structure indicated is the surgical neck of the humerus. The proximal end of the humerus consists of the following features: Head Anatomical neck Surgical neck Greater and lesser tubercles Intertubercular sulcus (bicipital groove) Deltoid tuberosity Superior, middle and inferior facets The anatomical neck of the humerus is located distal to the head of the humerus, at an oblique angle to the shaft of the humerus. The surgical neck of the humerus on the other hand is a constriction of the humerus located inferior to the greater and lesser tubercles. It is a clinically important anatomical …

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surgical neck of humerus

Medial Epicondyle of Humerus

Medial Epicondyle of Humerus The structure indicated is the medial epicondyle of the humerus. The distal end of the humerus consists of several features: Condyle, consisting of the capitulum and trochlea Medial and lateral epicondyles Medial and lateral supracondylar ridges Radial fossa, coronoid fossa, olecranon fossa A large central condyle which has two articular components – the capitulum which articulates with the radius, and the trochlea which articulates with the ulna. Either side of the humeral condyle, are two epicondyles, the medial and lateral epicondyles superior to which are the medial and lateral supracondylar ridges. The medial and lateral epicondyles …

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medial epicondyle of humerus

Greater Tubercle of Humerus

Greater Tubercle of Humerus The structure indicated is the greater tubercle of the humerus. The greater tubercle lies lateral to the head of the humerus as serves as the point of attachment for three of the rotator cuff muscles. There are three flat facets to which these three muscles attach: Superior facet Middle facet Inferior facet The supraspinatus attaches to the superior facet. The infraspinatus attaches to the middle facet. The teres minor attaches to the inferior facet. Separating the greater tubercle from the lesser tubercle is the intertubercular sulcus, also known as the bicipital groove. The long head of …

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Greater Tubercle of Humerus

Intertubercular sulcus

Intertubercular Sulcus The structure indicated is the intertubercular sulcus of the humerus. The intertubercular sulcus, also known as the intertubercular groove, or bicipital groove, is a groove separating the greater and lesser tubercles of the humerus. The tendon of the long head of the biceps muscle runs in this groove and attaches on the supraglenoid tubercle of the scapula. The short head of the biceps muscle on the other hand has its origin on the coracoid process of the scapula. The intertubercular sulcus is the site of three important muscle attachments: Pectoralis major Latissmus dorsi Teres major The pectoralis major …

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intertubercular sulcus