Term
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Definition
| Aka breast bone. Located @ midpoint of anterior throax. |
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Definition
| superior portion of the sternum that articulate with the clavicle forming the sternoclavicular joint (SC Joint) |
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Definition
| Middle portion of the sternum. Serves as the anterior attachment for ribs 2-7. |
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Term
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Definition
| Means "Sword Shaped". Inferior tip of the sternum. |
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Term
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Definition
| AKA collar bone. S-shaped bone that acts as a rod linking the scapula to the sternum. |
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Term
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Definition
| Flattened lateral portion that articulates with the acromion of the scapula forming the acromioclavicular joint. |
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Term
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Definition
| medial end of the clavicle. Articulates with the manubrium of the sternum, forming the sternoclavicular joint. |
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Term
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Definition
| AKA Shoulder Blade. Highly movile triangular shaped bone resting on the posterior side of the thorax. |
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Term
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Definition
| Concave Anterior aspect of the Scapula that allows the scapula to glide smoothly along the convex posterior rib cage. |
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Term
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Definition
| Slightly concave, oval shaped surface of the Scapula that accepts the head of the humerous, making the glenohumeral joint. |
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Term
| Superior and Inferior Glenoid Tubercles |
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Definition
| Border the Glenoid Fossa respectively and serve as proximal attatchments for the long heads of the biceps and triceps. |
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Term
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Definition
| Divides the posterior aspect of the Scapula into Supraspinatous Fossa and Infraspinatous Fossa. |
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Term
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Definition
| Concave superior posterior aspect of the of the scapula. Located above (superior) to the Scapular Spine. |
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Term
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Definition
| Concave posterior inferior aspect of the scapula. Located below (inferior) to the scapular spine. |
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Term
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Definition
| Wide, flat projection of bone from most superior-lateral aspect of the scapula. Forms a functional "roof" over humeral head to help protect delicate structures with in. |
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Term
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Definition
| Tip of the scapula. Medial and lateral borders meet here. Helps to track scapular motion. |
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Term
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Definition
| Proximal portion of humerus. Point of attachment for a multitude of ligaments and muscles. |
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Term
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Definition
| nearly 1/2 of a full sphere that articulates with the glenoid foss, forming the glenohumeral joint. |
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Term
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Definition
| A sharp, anterior projection of bone just below the humeral head. |
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Term
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Definition
| Larger, more rounded lateral projection of bone. |
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Term
| Intertubercular groove/bicipital groove |
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Definition
| Divides greater and lesser tubercles. Houses tendon of long head of the biceps. |
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Term
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Definition
| The distal insertion of all three heads of the deltoid muscle. Located laterally, middle portion of shaft of humerus. |
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Term
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Definition
| Runs obliquely across posterior surface of humerus. The radial nerve follows this groove and helps define the distal attachment for lateral and medial heads of the triceps. |
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Term
Sternoclavicular Joint
SC Joint |
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Definition
Articulation of medial aspect of the clavicle with the sternum. Provides the only direct bony attachment of the upper extemity to the axil skeleton.
-Allows motion in all 3 Cardinal Planes
-Saddle Joint
-Motions include elevation and deppression, protraction and retraction, and axil rotation.
All movements of the shoulder girdle originate at the SC Joint. |
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Term
| Sternoclavicular Ligament |
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Definition
| Firmly joins the clavicle to the manubrium. |
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Term
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Definition
| Spans the jugular notch, connecting the superior medial aspects of the clavicles. |
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Term
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Definition
| Attaches teh clavicle to the costal cartilage of 1st rib and limits extremes of all clavicular motion except depression. |
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Term
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Definition
| Acts as a shock absorber between clavicle and sternum; improves joint congruency. |
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Term
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Definition
Not a true joint. Refers to junction of anterior aspect of the scapula on posterior thorax (rib cage). Normal movement and posture of this are essential to normal function of shoulder.
-Motions include elevation and depression, retraction and protraction, and upward and downward rotation. |
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Term
Acromioclavicular Joint
(AC Joint)
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Definition
Plane joint by articulation of lateral clavicle and acromion process of the scapula. Many strong forces transferred across AC joint, requiring several stablizing structures.
-Motion in all 3 planes. Up and down rotation, rotation in horizontal plane, and rotation in sagittal plane. |
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Term
| Acromioclavicular Ligament |
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Definition
| Joins clavicle to acromion; helps prevent dislocation and links motion of the scapula to clavicle. |
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Term
| Coracoclavicular Ligament |
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Definition
| Conoid and trapezoid ligaments. Together they suspend the scapula from the clavicle and prevent dislocation. |
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Term
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Definition
| Attaches the coracoid process to acromion process. One of few ligaments that attatches both proximally and distally to same bone with acromion, completing the coracoacromial arch. |
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Term
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Definition
| The functional "roof" protecting head of humerus. |
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Term
Glenohumeral Joint
(GH Joint) |
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Definition
| Articulation of humeral head with glenoid fossa of scapula. Alows for abundant motion in all three planes, but not a high degree of stability. |
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Term
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Definition
| Pertains four muscles: supraspinatus, infraspinatus, subscaularis, tres minor. They surround the humeral head and hold against gleniod fossa. |
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Term
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Definition
| Thin fiberous capsule including the superior, middle, and inferior glenohumeral ligaments. The loose capsule attatches between the rim of the glenoid fossa and anatomic neck of the humerus. |
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Term
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Definition
| Attaches between coracoid process and anterior side of greater tubercle. Helps limit extremes of external rotation, flexion and extension, and inferior displacement of humeral head. |
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Term
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Definition
1. Acromioclavicular Joint
2. Glenohumeral Joint
3.Coracoclavicular Ligaments
4.Coracoacromial Ligaments
5. Scapula
6. Greater Tubercle
7.Superior Acromioclavicular Ligament
8.Coracohumeral Ligament
9.Lesser Tubercle
10. Humerus
11. Clavicle
12. Acromion |
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Term
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Definition
1. Acromion Process
2. Glenoid Fossa
3. Subscapular Fossa
4. Inferior Angle
5. Superior Angle
6.Auxillary/Lateral Border
7. Medial/Vertebral Border
8. Coracoid Process |
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