Insertion deltoïde

Insertion: The deltoid tuberosity on the lateral surface of the proximal humeral shaft Actions: Flexion and internal rotation of the arm at the shoulder Innervation: Axillary nerve (C5, C6) Blood Supply: Posterior circumflex humeral artery. Primary Actions of the Anterior Deltoid. 1. Flexion of the arm at the shoulder Agonists: Biceps brachii; Coracobrachialis; Pectoralis major (clavicular …

The deltoid is a thick, triangular shoulder muscle. It gets its name because of its similar shape to the Greek letter ‘delta’ (Δ). The muscle has a wide origin spanning the clavicle, acromion and spine of scapula. It passes inferiorly surrounding the glenohumeral joint on all sides and inserts onto the humerus.

Origin & Insertion Since the deltoid muscle is divided into three different sections, this muscle has multiple points of origin. This chart describes these points of origin. Each section of the…

Each head of the deltoid has slightly different insertion points, allowing for more control and a full range of motion at the shoulder joint. The anterior head of the deltoid works closely with pectoralis major, which allows for full stabilization near its more superior insertion on the clavicle. When each of the deltoid‘s three heads contracts together, it allows the arm to be elevated, or …

Dr. Ebraheim’s educational animated video describes the deltoid intramuscular injection, which is a common procedure.The vastus lateralis and the safe area o…