The bone of the arm is the humerus, which articulates with the scapula at the shoulder joint and upper ends of radius and ulna bones at the elbow joint. The shoulder joint 1. What are the causes of shoulder instability? Teres Major Muscle: Origin, Insertion, Nerve Supply & Action. The nerve supply of any joint comes from the nerves that supply the muscles acting on that joint. Content • Introduction • Glenoid Cavity • Ligaments Surrounding the joint • Bursae in Relation to the Shoulder Joint • Muscles Acting on Shoulder Joint • Blood and Nerve Supply • Joint Movement • Close and Loose Pack Position • Applied Anatomy Shoulder extension; Innervation – Suprascapular nerve. Nerves Supply of The Shoulder Joint. But that really didn't help. Shoulder Girdle Muscle: The shoulder girdle is also known as the pectoral girdle. The bones of the forearm are radius and ulna. Function. Variation. The sympathetic nerve supply comes from the thoracic region from T2-T8. Blood supply. The teres major is situated superior to the latissimus dorsi and avails in the extension and medial rotation of the humerus. • It is initiated by supraspinatus from 0 to 18 • Then from 19 to 120 by the middle fibers of the deltoid. So at least I knew it wasn't anything serious. Actions of Infraspinatus Muscle. NERVE SUPPLY to SHOULDER JOINT• Axillary nerve• Sub scapular nerve• Musculocutaneous nerve 14. A consistent pattern of shoulder joint innervation with the articular nerves related to specific soft tissue and bony landmarks is shown . Subscapularis is an important stabilizer of the shoulder joint when the deltoid, pectoralis major, biceps and triceps brachii muscles are active. Nerves, blood vessels, and bursae all play an important role in hip joint health. Therefore, the irritation of the nerves in joint disease causes reflex spasm of the muscles, which fix the joint in the position of greatest comfort. This nerve is called the axillary nerve. Lacking the passive stabilisation offered by ligaments in other joints, the glenohumeral joint is actively stabilised by the rotator cuff , a group of short muscles stretching from the scapula to the humerus. Using the model developed for wrist pain 2,4-7,17 and extended for knee pain, 8,12 physicians relate a cutaneous or articular nerve to a given joint structure or symptomatic region. Learn nerve supply shoulder doctaj muscles with free interactive flashcards. Nerve Supply of Infraspinatus Muscle. All of the nerves that travel down the thigh pass by the hip. The suprascapular nerve is crucial for proper function of your shoulder joint. Origin - caudal brachial plexus, C7 to T2; Motor innervation - extensors of elbow, carpus and digits; Sensory innervation - dog: craniolateral and medial forearm, horse: lateral forearm; Route - through the triceps, around the humerus to the lateral aspect of the forearm ; Median and Ulnar Nerves. Albrecht Wilhelm, Albrecht Wilhelm, The Controversial Pain Syndrome of the Shoulder Joint (So-Called Coracoiditis ... Hironobu Ito, Sensory nerve supply in the human subacromial bursa, Journal of Shoulder and Elbow Surgery, 10.1016/S1058-2746(96)80069-3, 5, 5, (371-382), (1996). The teres major is a muscle of the upper limb. The terms shoulder joint, capsule, denervation, shoulder innervation, nerve, articular branch, sensory receptors, capsule, ligament, and anatomy were used in various combinations with “AND” and “OR” to assist in review. Origin – Posterior surface of the scapula (below the spine of the scapula). The teres major attaches to the scapula and the humerus. throwing, pulling downwards), during which the force of subscapularis prevents upward shoulder dislocation . This can lead to shoulder pain and numbness of the arm and hand. The equivalent nerves in the front are the articular branches of the femoral, common peroneal and saphenous nerves. Thus, the knee joint is supplied by branches from the femoral, sciatic, and obturator nerves, which among them supply the various muscles moving the joint. The law enunciates that the nerves which supply a joint, also furnish branches to the group of muscles regulating the movements of the joint and the skin over the joint. These last few weeks have been hell with the nerve pain in my arm and shoulder. Route - behind the shoulder joint; Radial Nerve. Structure of the Brachial Plexus. External rotation. There is an anatomical connection between pectoral girdle and the axial skeleton; that is, the sternoclavicular joints, that lies anteriorly. The nerves that supply sensation to the back of the knee joint itself are the posterior (back) articular (joint) branches of the tibial and obturator nerves. The suprascapular nerve innervates the supraspinatus and infraspinatus muscles. General features of Synovial Joints. 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