The Metacarpal bones are the bones present in the hands. Metacarpal bones are located in between the phalanges of the fingers and the carpal bones of the wrist and creates the intermediate part of the skeletal hand. The hand consist of five metacarpal bones which are conventionally numbered 1 to 5 from lateral (radial) to [...]
Anatomy of the Elbow Joint The three bones that are responsible for the formation of the elbow joint are humerus, radius and ulna. It includes two articulations: (a) humero-ulnar articulation, between the trochlea of the humerus and trochlear notch of the ulna, and (b) humero-radial articulation, between the capitulum of the humerus and the head [...]
The infraspinatus is a thick triangular muscle, which occupies most of the infraspinous fossa. It is among the four Rotator Cuff muscles acting as the mechanical link between the posterosuperior and anterior parts of the rotator cuff. Origin of Infraspinatus Muscle Infraspinatus muscle originates from the medial two-thirds of the infraspinatous fossa by tendinous fibres from [...]
The pronator teres muscle is found on the palmar side of the forearm, below the elbow. It is assisted by the pronator quadratus to perform its major role i.e, to rotate the forearm palm-down. This position is also referred to as pronation. Origin of Pronator Teres Muscle The pronator teres muscle originates from two heads: A superficial head [...]
Teres minor is among the four muscles that contribute to the making of the Rotator Cuff. Its shape is long and narrow and sometimes it may blend into infraspinatus. The primary function of teres minor is to keep the humerus steady in the glenoid fossa in the shoulder movement. Origin The Teres minor [...]
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 muscle is a muscle of the upper arm which lies much deeper than the biceps brachii muscle. It is a long and strong muscle which helps in the movement of the elbow joint. The brachialis muscle forms the floor of the cubital fossa. What Marks The Origin and Insertion of Brachialis [...]
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 [...]