Gourt > Health > Conditions and Diseases > Musculoskeletal Disorders > Shoulder
- This article is about the body part. See hard shoulder for the road segment.
In human anatomy, the shoulder joint is composed of three bones: the clavicle (collarbone), the scapula (shoulder blade), and the humerus (upper arm bone). Two joints facilitate shoulder movement. The acromioclavicular (AC) joint is located between the acromion (part of the scapula that forms the highest point of the shoulder) and the clavicle. The glenohumeral joint, to which the generic term "shoulder joint" usually refers, 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. (The "ball" is the top, rounded portion of the humerus; the "socket," or glenoid, is a dish-shaped part of the outer edge of the scapula into which the ball fits.) Arm movement is further facilitated by the ability of the scapula to slide both laterally and vertically along the rib cage. The capsule is a soft tissue envelope that encircles the glenohumeral joint. It is lined by a thin, smooth synovial membrane.
The bones of the shoulder are held in place by muscles, tendons, and ligaments. Tendons are tough cords of tissue that attach the shoulder muscles to bone and assist the muscles in moving the shoulder. Ligaments attach shoulder bones to each other, providing stability. For example, the front of the joint capsule is anchored by three glenohumeral ligaments.
The rotator cuff is a structure composed of tendons that, with associated muscles (supraspinatus, infraspinatus, teres minor and subscapularis), holds the ball at the top of the humerus in the glenoid socket and provides mobility and strength to the shoulder joint.
More on [ Shoulder ]
LOL - hey buddy, Jeff & I are talking on Skype about this if you want to join us RT @jgarrow: @sct_r *peeks over Scott's shoulder*
sct_r (scott reuter) Wed, 25 Jan 2012 13:38:21 -0000
LOL - hey buddy, Jeff & I are talking on Skype about this if you want to join us RT @jgarrow: @sct_r *peeks over Scott's shoulder*
Stainless Steel Shoulder Screw, Hex Socket Drive, 3/8" Shoulder Diameter, 5/16"-18, 1" Shoulder Length (Pack of ... http://t.co/CZYcVNiM
Deirdrejnl (Deirdre Eells) Wed, 25 Jan 2012 13:38:21 -0000
Stainless Steel Shoulder Screw, Hex Socket Drive, 3/8" Shoulder Diameter, 5/16"-18, 1" Shoulder Length (Pack of ... http://t.co/CZYcVNiM
Nih *tunjukin pundahnya ayam* RT @gitachou: a shoulder to cry. . where?
acitacito (Astried Putri) Wed, 25 Jan 2012 13:38:20 -0000
Nih *tunjukin pundahnya ayam* RT @gitachou: a shoulder to cry. . where?
Reebok Lacrosse Protector 7K Shoulder Pads (Silver, Small): #56396 FitLite shoulders and sternum for improved r... http://t.co/R4UH2pHL
Myglh (My Dibenedetto) Wed, 25 Jan 2012 13:38:12 -0000
Reebok Lacrosse Protector 7K Shoulder Pads (Silver, Small): #56396 FitLite shoulders and sternum for improved r... http://t.co/R4UH2pHL
RT @Ken_Blanco: Wag kang magulo hahampasin kita ng shoulder bag ni @marijuANAAAAA e.
marijuANAAAAA (AnaMargaritaBerjuega) Wed, 25 Jan 2012 13:38:08 -0000
RT @Ken_Blanco: Wag kang magulo hahampasin kita ng shoulder bag ni @marijuANAAAAA e.
He came up tapped me on my shoulder and as soon as I turned around to see who it was his girl came up cursing at him. Lol
LilRokka (SeeAirRah ) Wed, 25 Jan 2012 13:37:59 -0000
He came up tapped me on my shoulder and as soon as I turned around to see who it was his girl came up cursing at him. Lol
Rotator Cuff Tears - Information about injuries to the rotator cuff, and surgical repair of this condition.
Meta Description: [ A rotator cuff tear is a common cause of shoulder pain and weakness. A rotator cuff tear damages the tendons around the shoulder joint. A rotator cuff tear can be painful and sometimes require surgery for treatment. ]
Shoulder India - Information on shoulder disorders from an Orthopaedic Surgeon.
Meta Description: [ Shoulder surgery, dislocation, rotator cuff, SLAP repair, Frozen Shoulder release, Arthroscopy, Open surgery India.
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Shoulder Pain - Information on common problems and their treatment.
Meta Description: [ Shoulder pain is an extremely common complaint that has many causes. Because we use our arms for so many common activities, shoulder pain can cause significant problems. In order for proper treatment, the cause of the problem must be identified. ]
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