The Superior radio-ulnar joint and the Inferior radio-ulnar joint are the two joints formed between the radio and ulna. The Superior radio-ulnar joint is formed at the upper end, while the Inferior radio-ulnar joint is formed at the lower end of radius and ulna. Both these Radio-Ulnar Joints are synovial joints of pivot variety. Both [...]
The carpometacarpal joints with the exception of the carpometacarpal joint of the thumb, which is a saddle joint, are type of plane synovial joints. Functionally as well as medically, the most important joint is the first carpometacarpal joint. The distal side of the carpals of distal row articulates with the base of metacarpals. There are [...]
The anterior circumflex humeral artery is smaller than the posterior circumflex humeral artery, but is a branch of axillary artery as well. Origin The anterior circumflex humeral artery emerges from the lateral side of the third part of the axillary artery. Insertion It anastomoses with the posterior circumflex humeral artery after it passes anterior towards [...]
Brachial Artery is the direct continuation of the axillary artery within the arm which divides into radial and ulnar arteries. Beginning It begins at the lower border of teres major muscle. End It ends at the cubital fossa about 1 cm below the bend of the elbow joint, in the level of the [...]
The blood to the upper limb is supplied by 4 major arteries: axillary, brachial, radial, and ulnar. The subclavian artery is followed by the axillary. Its name is changed to brachial artery at the lower border of the teres major muscle. The brachial artery continues down the arm and just distal to the elbow joint, it splits into radial and ulnar arteries, which follow [...]
The muscles of the posterior of the forearm are categorized into two classes: superficial deep The muscles that form the back of the forearm are commonly known as Extensor Muscles. These are provided by the radial nerve. Superficial Muscles of the back of Forearm The superficial muscles of the back of forearm are [...]
The Brachialis is a long and strong muscle of the upper arm. It is a muscle in the upper arm that bends the elbow joint. It lies much deeper than the biceps brachii, and comprises part of the floor of the region called the cubital fossa. What Marks The Origin and Insertion of [...]
The greater tubercle is situated on the lateral side of the humeral head. This tubercle acts as the attachment for the tendons of the supraspinatus, infraspinatus, and teres minor muscles. The greater tubercle is positioned laterally. Three large smooth sides represent its superior surface and posterior surface for muscle tendon attachment: The superior facet of greater [...]
The Ulnar Artery is the larger of the two terminal branches of the brachial artery. It supplies the medial aspect of the forearm, wrist, and hand. It starts just below the bend of the elbow and goes obliquely downward, reaching the ulnar side of the forearm near about midway between the elbow and the wrist. [...]
The radial artery turns close to the lateral side of the wrist and within the deep plane of the palm by piercing anteriorly via the back of the hand and also goes over the floor of the anatomical snuffbox. It goes among the two heads of the first dorsal interosseous muscle and afterwards amid the [...]