The upper arm

General information The upper arm consists of an upper arm bone (humerus) and several joint connections to both the shoulder (shoulder joint) and the bones of the forearm (elbow joint). The upper arm also has numerous Muscles, Nerves Vessels The upper arm bone (humerus) The humerus is a long tubular bone, which is divided into … Read more

Upper arm musculature | The upper arm

Upper arm musculature On the upper arm, the muscles are divided into two groups: the upper arm fascia (fascia brachii) and the lateral and middle intermuscular septum. Flexor muscles: The flexors of the upper arm are All flexors are innervated by the nervus musculocutaneus The biceps brachii muscle consists of two large muscle heads and … Read more

Joints of the upper arm | The upper arm

Joints of the upper arm The upper arm is connected via the The shoulder joint is a ball-and-socket joint that allows three different directions of movement: The articular surfaces of the shoulder joint are formed by the head of the humerus (Caput humeri) and the articular surfaces of the shoulder blade (Cavitas glenoidale scapulae) and … Read more

Nerves | The upper arm

Nerves On the upper arm some nerves run from the brachial plexus. The musculocutaneous nerve originates from the lateral part of the plexus and supplies the motor nerve. The radial nerve runs together with the brachial artery and wraps around the humerus. The radial nerve innervates the forearm and splits into different branches and then … Read more

Diseases of the upper arm | The upper arm

Diseases of the upper arm A fracture of the upper arm is also called humerus fracture, where the humerus is broken or broken through. It is a fairly common fracture, usually occurring after falling on the shoulder or arm or due to external force in an accident, for example. Often the humerus breaks below the … Read more

Upper arm bracelet | The upper arm

Upper arm bracelet Bandages on the upper arm are particularly common in combination with the elbow, since joints suffer particularly from many sports activities and computer work. In addition to overloading, incorrect weight-bearing can also lead to problems. This can lead to inflammation and injuries. A typical clinical picture is tennis elbow, in which the … Read more

Vascularization of the arm

Arteries The oxygenated blood reaches the right side via the brachiocephalic trunk and the left side directly from the aortic arch into the right or left subclavian artery. The subclavian artery merges into the axillary artery, which runs between the lower edge of the collarbone and the anterior axillary fold. Smaller branches lead to the … Read more

Veins | Vascularization of the arm

Veins A distinction is made between deep and superficial veins. Both vein systems have valves to allow blood to flow towards the heart and are connected to each other by connecting veins. The superficial venous network (Rete venosum dorsale manus) is located on the back of the hand. From here, the blood is directed to … Read more

Brachial plexus

Introduction The brachial plexus is a network of the anterior branches of the spinal nerves of vertebrae C5-Th1. This is another name for the lower four cervical vertebrae and the uppermost thoracic vertebra. This “arm plexus” belongs to the so-called peripheral nervous system, which lies outside the skull bone and the spinal canal and connects … Read more