Upper arm and shoulder anatomy
Which muscle abducts the upper arm?
The rotator cuff is a set of four muscles that serve to stabilize and rotate the shoulder, attached by strong tendons to the upper head of the humerus. During abduction, the supraspinatous and infraspinaoous muscles abduct and rotate the head of the humerus.
What causes shoulder pain in upper arm?
Upper arm strains typically occur due to heavy lifting or overuse of a tired muscle. Inflammation of your shoulder joint and/or the associated tendons may set off achiness in your upper arm muscles. This pain is generally felt in the outer muscles of your upper arm.
Why does the muscle in my upper arm hurt?
A strain injury is a common cause of upper arm muscle achiness. This injury occurs when a muscle and/or its associated tendon is overstretched, leading to tearing of the fibers. Strain injuries range from mild to severe, depending on the extent of tearing. A complete tear, or rupture, is the most severe type of strain injury.
What is the muscle under your upper arm called?
The muscles on the back of your upper arm are called the triceps and can be toned with a variety of exercises targeting those muscles. A great one to try is the bench dumbbell extension.
[PDF File]The Shoulder
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the arm. The upper thoracic vertebrae must be able to extend, rotate, and side-bend to accomplish full elevation of the arm.1 There must also be mobility in the upper ribs as well as mobility in the acromioclavicular and sternoclavicular joints for full range of motion (ROM) in the arm. Stability of
[PDF File]Osteopathic Approach to Upper Extremity
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shoulder anatomy o shoulder is the proximal segment of the upper extremity and connects it to the axial skeleton o it includes the pectoral, scapular and deltoid regions o ligaments- transverse humeral lig, superior acromioclavicular lig, coraco-acromial lig, …
[PDF File]FUNCTIONAL ANATOMY OF THE SHOULDER JOINT
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shoulder joint. • For every 3° of abduction of the arm, a 2° abduction occurs in the shoulder joint and a 1° abduction occurs by rotation of the scapula. • At about 120° of abduction of the arm, the greater tuberosity of the humerus comes into contact with the acromion. • Further elevation of the arm above the head accomplished by ...
[PDF File]Applied anatomy of the shoulder
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The clavicle gives support to the shoulder girdle by acting . as a strut between scapula and sternum. Due to its S-shape, the outer end describes a much larger rotation during arm elevation than its inner end. Therefore, lesions of the acromio-clavicular joint ligaments are more frequent than are lesions of the sternoclavicular joint ligaments.
[PDF File]The Upper Limb Lecture 1
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Muscles That Move the Pectoral Girdle Originate on the axial skeleton and insert on the clavicle and scapula. Stabilize the scapula and move it to increase the arm’s angle of movements. Some of the superficial muscles of the thorax are grouped together according to the scapular movement they direct. elevation, depression, protraction, or retraction
[PDF File]Arteries of the Upper Limb (Shoulder, Arms & Hands)
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Arteries of the Upper Limb (Shoulder, Arms & Hands) The blood supply to the upper limb (shoulder, arm and hand) starts as the subclavian arteries in the shoulders. As each artery passes into the axilla (armpit) it becomes the: > axillary artery supplies blood, through several small branches, to the axilla, chest wall, shoulder joint, scapula,
[PDF File]Basic Shoulder Anatomy
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Basic Shoulder Anatomy The shoulder complex is made up of three bones, which are connected by muscles, ligaments, and tendons. The large bone in the upper arm is called the humerus. The shoulder blade is called the scapula and the collarbone is called the clavicle. The top of the humerus is shaped like a ball.
[PDF File]A Patient's Guide to Shoulder Anatomy
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The bones of the shoulder are the humerus (the upper arm bone), the scapula (the shoulder blade), and the clavicle (the collar bone). The roof of the shoulder is formed by a part of the scapula called the acromion. There are actually four joints that make up the shoulder. The main shoulder joint, called the glenohumeral joint , is formed where ...
[PDF File]Clinical Anatomy of the Upper Limb - Welcome to KHIMA
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humerus or due to an inferior dislocation of shoulder joint. •Effects: •Loss or weakness of abduction of shoulder (between 15 degrees to 90 degrees) due to paralysis of Deltoid. •Rounded contour/profile of shoulder is lost due to paralysis of deltoid •Sensory loss over lower half of the outer aspect of shoulder ‘regimental badge area’.
[DOCX File]Anatomy and Physiology - Muscles
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Lesson 1. Anatomy and Procedures of the. Humerus. Anatomy: Humerus. Long bone in the upper arm. Head articulates with scapula to form shoulder joint. Distal end forms part of elbow joint
[DOC File]Applied Anatomy of Bones & Joints of Upper Limb
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is this muscle here, right at the shoulder joint. You could say that this is the muscle that gives your shoulder that rounded shape that it has. It stabilizes and moves the shoulder and arm. The deltoid is the main abductor muscle of the shoulder, meaning it moves the arm away from the center of the body.
[DOC File]© Felix Gmünder, Schwimmverein Limmat Zürich
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or by direct impact to the shoulder itself. SITE: weakest part is the junction of the middle and lateral thirds. EFFECT: after fracture the SCM muscle elevates the medial fragment. the trapezius is unable to hold up the lateral fragment (due to weight of upper limb) and the shoulder drops
Shoulder Human Anatomy: Image, Function, Parts, and More
UPPER ARM/SHOULDER MUSCLES. 1. Biceps Brachii. attached to the forearm bone (radius) and originates at the scapula. runs down the anterior portion of the humerus and makes up approximately one third of the muscle mass of the upper arm. Primary Function = Elbow Flexion (to move the forearm towards the shoulder) Secondary Function = supination ...
[DOC File]COMMON INJURIES TO THE UPPER EXTREMITY
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paralysis of muscles of the arm supplied by the C5 and C6 spinal nerves occurs: deltoid, biceps, brachialis and brachioradialis. loss of shoulder movement and elbow flexion. clinical appearance: upper limb with adducted shoulder, medially rotated arm, and extended elbow. sensory loss to lateral aspect of arm and forearm. almost always occurs ...
[DOC File]INTRODUCTION TO WEIGHT TRAINING/ANATOMY
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Anatomy of shoulder (big or downsloping or spurred acromion (inherited) and/or thickened coracoacromial ligament (inherited, acquired) Poor posture . ... Avoid internal rotation of hand/forearm/upper arm complex in particular during recovery and entry. Internal rotation is when the palm is showing outwards with thumb backwards.
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