The shoulder joint is the main joint of the shoulder. The lateral and caudocranial projections of the shoulder joint should include the: Proximal third of the humerus; Distal third of the scapula; All aspects of the shoulder joint (glenoid cavity and humeral head) The trachea should be superimposed over the distal portion of the scapula, not the shoulder joint or humeral head. Hollow socket is also known as “Glenoid”. poonam.kdc@gmail.com. Applied anatomy of the shoulder . This is known as ‘painful arc syndrome‘. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. The rotator cuff is a group of muscles and tendons that surround and support the shoulder joint. Also, scapular movement asymmetries are frequently associated with shoulder impingement. This gives rise to the alternate name for the shoulder joint – the glenohumeral joint. Laterally it attached to the anatomical neck of the humerus except. The glenoid fossa (shoulder joint socket) is located on the lateral aspect of the scapula. See our User Agreement and Privacy Policy. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. The fibrocartilagenous ring called glenoid labrum deepens the glenoid cavity. Following inferior dislocation of shoulder joint, the rounded contour of shoulder is lost and there is weakness of abduction of armbecause. A main reason of this problem are overload, trauma, osteoartchritis or spascity after stroke. When the shoulder joint abducts to the point where the arm is raised above one's head, the shoulder girdle has to. Now customize the name of a clipboard to store your clips. Since the original descriptions, numerous studies have addressed the subject of measuring shoulder range of motion, and there are textbooks devoted to these measurements.7,8 There are many factors that influence the range of motion measured by health care practitioners. Shoulder joint is the most movable joint and is also more prone to dislocation than any other joint. It also allows the arm to move in a circular motion and to … Tibio-femoral joint: Modified hinge or condyloid joint; Patello-femoral joint: Sellar or saddle joint; Articulation: Medial and lateral femoral condyles articulate with the corresponding tibial condyles or facets & APPLIED ASPECTS OF SHOULDER JOINT Describe briefly the abduction at shoulder joint. In this condition the rotator cuff is unable to support the glenohumeral joint thereby causing pain in the biceps and the shoulder. The shoulder joint complex is composed of four independent articulations,-the sternoclavicular, acromioclavicular, scapulothoracic, and glenohumeral joints. The proximal end of the humerus near shoulder joint is shaped like a bony round ball attached to the shaft of the humerus. Shoulder surgery can potentially help restore pain-free range of motion as well as allow the full function to a damaged shoulder joint. Shoulder Joint. Infraspinatus and teres minor posteriorly. Dr. McMonagle is an Associate Professor of Radiology, Musculoskeletal Radiology Fellow, and Dr. Vinson is an Assistant Professor of Radiology, Musculoskeletal Radiology Division, Department of Radiology, Duke University Medical Center, Durham, NC. It is attached medially to the margins of the glenoid cavity beyond the glenoid labrum. Required fields are marked *. : prevents the upward dislocation of the head of the humerus. The glenoidogram also reveals another important aspect of shoulder stability: the slope of the glenoidogram at any point is equal to the tangent of the balance stability angle (which equals the stability ratio) at that point. A positive finding may indicate supraspinatus tendinitis. Thickening or calcium deposits in the supraspinatus tendon or subacromial bursitis results in pain during abduction of shoulder joint from 60° to 120°. Shoulder pain can be due to osteoarthritis, muscle tears, tendonitis, and several other causes. If you continue browsing the site, you agree to the use of cookies on this website. To expose the subacromial and subdeltoid spaces ask the patient to internally rotate the shoulder by placing the hand against the back. 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You can change your ad preferences anytime. Anterior aspect of the shoulder girdle. Know the causes, symptoms, treatment, exercises and diagnosis of anterior shoulder pain. Socket is the outermost part of the scapula. Name the articular surfaces of shoulder joint. Inferior dislocation of shoulder joint is common because: Following inferior dislocation of shoulder joint, the rounded contour of shoulder is lost and there is weakness of abduction of armbecause the axillary nerve is likely to be injured in the inferior dislocation as it is related to the surgical neck of humerus. General Anatomy. Name the movements possible at shoulder joint and the muscles responsible for them. As the axillary nerve supplies deltoid muscle, paralysis of deltoid muscle results in loss of abduction (between 15-90 degrees) and rounded contour of shoulder.. Axillary nerve also supplies skin over lower half of deltoid (regimental badge area), therfore sensory loss over regimental badge area is also observed. The capsule descends downwards on the surgical neck inferiorly. Gross Anatomy. Shoulder surgery repairs a damaged, degenerated, or diseased shoulder joint. Ball like structure of the humerus fits in the socket of the scapula. Movements of the human shoulder represent the result of a complex dynamic interplay of structural bony anatomy and biomechanics, static ligamentous and tendinous restraints, and dynamic muscle forces. Movement of the Scapulothoracic Joint is A Composite of the Sternoclavicular and Acromioclavicular Joint, 1. • Helps control humeral head movement • Rotator Cuff contraction, they dynamically tighten the capsule – Helps center the humeral head relative to the glenoid. The joint capsule is a soft tissue envelope that encircles the glenohumeral joint and attaches to the scapula, humerus, and head of the biceps. DISLOCATIONS OF THE SHOULDER JOINT Anterior-Inferior Dislocation • Sudden violence applied to the humerus with the joint fully abducted pushes the humeral head downward onto the inferior weak part of the capsule, which tears, and the humeral head comes to lie inferior to the glenoid fossa. In this chapter only those muscles that are not discussed else-where are described. One of the many remarkable features of the normal shoulder is that the glenohumeral joint (the ball and socket joint between the upper arm bone and shoulder blade) is very stable in spite of the vast range of motion available to the joint (see figure 1). The glenohumeral, or shoulder, joint is a synovial joint that attaches the upper limb to the axial skeleton. SMS Medical College, Jaipur. The capsule is not supported by the muscultendinous cuff inferiorly. Read on to learn how an arthritic shoulder can affect your range of motion and ability to do everyday things, and discover ways to treat and manage the condition. Looks like you’ve clipped this slide to already. Personal rehab helpful for multiple sclerosis, Multiple sclerosis complex multidisciplinary clinic - Sarah Roderick, No public clipboards found for this slide, Government T D Medical College, Alappuzha. The head of the humerus is much larger than the glenoid fossa, giving the joint a wide range of movement at the cost of inherent instability. The deltoid is difficult to repair back to the acromion; limited detachment is recommended. The shoulder joint is formed where the humerus (upper arm bone) fits into the scapula (shoulder blade), like a ball and socket. Anterior and posterior circumflex humeral arteries, Inferior dislocation of shoulder joint is common. It is a ball and socket joint that allows the arm to rotate in a circular fashion or to hinge out and up away from the body. APPLIED ANATOMY • Movement of the shoulder is critical to maintain the positioning of the humeral head relative to the glenoid. None (deltoid split proximally to the axillary nerve) Applied anatomy. A second joint in the shoulder is the junction of the collar bone with the shoulder blade, called the acromioclavicular joint. Applied anatomy of the thorax and abdomen. Shoulder fractures in older patients are often the result of a fall from standing height. OSTEOLOGY The bone framework of the shoulder consists of: the clavicle and scapula, which form the pectoral girdle (shoulder girdle) the proximal end of the humerus. The muscles at the anterior aspect of the shoulder girdle are . While each of these is an independent entity, capable of independent motion, all contribute their share to the total in the normal functional mechanism of the extremity. If you continue browsing the site, you agree to the use of cookies on this website. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. 2. passive movement, you perform the movement on behalf of the patient. ANATOMY & APPLIED ASPECTS OF SHOULDER JOINT PMR PG Teaching- August 2016 Dr. Jimy Jose Resident, Deptt. A positive test result is indicated by pain in the subacromial. The many possibilities are owed to the anatomy involved in allowing your shoul… Shoulder fractures commonly involve the clavicle (collarbone), humerus (upper arm bone), and scapula (shoulder blade). Your email address will not be published. Acromioclavicular joint decompression; Anterior shoulder decompression : Internervous plane & Applied Anatomy: Internervous plane. Of PMR These include the type of measuring device, the complexity of the joint motion being measured, whether the motion is measured actively or passively, the sex of the subject, the age of the subject, the experience of the examiner, the … Shoulder stability. The shoulder joint is formed by the articulation of the head of the humerus with theglenoid cavity(or fossa) of the scapula. 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