Term
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Definition
| Medial aspect of the clavicle as it articulates with the mandibrium of the sternum. |
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Term
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Definition
| Lateral aspect of the clavicle as it articulates with the acromin process. Lateral aspect of the spine of the scapula. |
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Term
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Definition
| Head of the humerus articulates with the glenoid fossa of the scapula |
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Term
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Definition
| Scapula moves across the thorax. Ribs 2-7. Due to A-C and S-C movements |
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Term
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Definition
| Multiaxial arthrodial joint. Low rate of injury due to strong ligament stabilization. Medial aspect of the clavicle can be dislocated medically, laterally, anteriorly, and posteriorly. Primary stabilizer that maintains scapula in place by stabilizing the clavicle which acts as a strut as it articulates with the acromian process. Contains 2 synovial cavities that are separated by a fibrocartilaginous articulates disk. |
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Term
| Anterior sternoclavicular joint |
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Definition
| Provides anterior stability for the joint and stabilizes the joint during inferior depression of the lateral clavicle |
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Term
| Posterior sternoclavicular |
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Definition
| provides posterior stability for the joint and strongest stabilizer of the joint during inferior depression to the lateral clavicle |
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Term
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Definition
| Provides superior stability for the joint. Runs from one clavicle to the other. Absent 22% of the population. |
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Term
| Anterior and posterior costoclavicular |
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Definition
| Runs from costal cartilage of rib #1 to the inferiomedial aspect of the clavicle. Stabilizes the joint from lateral displacement of the clavicle |
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Term
| Humeral abduction and adduction |
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Definition
| 30 to 40 degrees of elevation and depression of the clavicle |
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Term
| Posterior movement of the clavicle |
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Definition
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Term
| Longitudinal axis rotation |
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Definition
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Term
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Definition
| Two main functions: maintains the proper positioning of the scapula along with the s-c joint by utilizing the clavicle as a strut; allows the scapula additional ROM on the thorax. Classified as synovial (diathrodial) joint. Only articulation between the clavicle and scapula. |
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Term
| Acromioclavicular ligaments |
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Definition
| Provide 90% of anterior-posterior Stability. Divided into the inferior and superior segments |
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Term
| Coracoclavicular ligament |
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Definition
| 2segments. Lateral segment (trapezoid). Medial segment (conoid). Provides 75% of superior-inferior stability. Primary A-C joint stabilizer. |
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Term
| Anterior- Posterior scapula movement |
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Definition
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Term
| Upward-downward rotation of scApula |
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Definition
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Term
| Elevation and depression of scapula |
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Definition
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Term
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Definition
| articulation of the head of the humerous and the glenoid fossa (hollow or depressed areas) of the scapula. Synovial ball and socket. Greatest ROM due to: head of humerous is four times larger, joint capsule is twice he size of the humerus head, joint capsule is thin and lax. |
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Term
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Definition
| 3 segments: superior, middle, inferior. Form Z on anterior aspect of capsule. Provide anterior stability for capsule. |
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Term
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Definition
| Strong triangular ligament that forms part of the coracomromial arch that prevents superior displacement of the him earl head. Passes from lateral corocoid process to the medial aspect of the acoromial process. |
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Term
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Definition
| Forms a bridge over the intertubular groove to stabilize biceps brachii long head. Passes from the greater |
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Term
| bursa of the shoulder complex |
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Definition
| (g. bag or purse.) 206 bursae. |
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Term
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Definition
| small sacs lines with synovial membrane that secrets synovial fluid. located in areas of friction, in or between a tendon, muscle, or ligament moving over a bone. creates excessive microscopic tears in the tendon, muscle, and ligaments. |
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Term
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Definition
| located between the subscapularis tendon and the roof of the corocoid process. |
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Term
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Definition
| reduces friction of the suprspinatus tendon and biceps brachii LH tendon with the humeral head if the heumeral head moves into this space it its shoulder abduciton |
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Term
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Definition
| located between the underside of the deltoid muscle and the outer surface of the capsule and the greater tubercle. bursae is needed here due to the may movements the deltoid is involved in. |
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Term
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Definition
| located just below the coracoid process and unites with the subscapular bursae. protects the capsule, coracobrachalis tendon and biceps brachii SH tendon from contact with the corocoid process. |
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Term
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Definition
| six muscles associated with this. three anterior. three posterior. muscles function to stabilize and position the scapula for increases efficency of movement and greater ROM |
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Term
| Anterior muscles of the shoulder girdle |
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Definition
| pectoralis major, serratus anterior, and subclavus |
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Term
| posterior muscles of the shoulder girdle |
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Definition
| trapezius, rhomboids, and levator scapula |
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Term
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Definition
| broad flat triangular muscle. place immediately beneath the skin and the fascia, and covering the posterior and superior aspect of the neck and shoulders. From the origin the superior fibers proceed inferiorly and lateral, mid fibers proceed horizontally, inferior fibers proceed superior and lateral. upper fibers are thin. does not provide elevation of the scapula due to its insertion on the posterior clavicle which articulates with the acromial process of scapula. middle fibers are thicker, provide strong elevation, upward rotation, and adduction of the scapular. when working together then to elevate and adduct simultaneously. clavicular insertion varies and sometimes advances as far as the middle of the clavicle to become blended with the posterior aspect of the sternoclediomastoid or overlap it. |
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Term
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Definition
| (l. to bind) (l. back of neck) situated in the posterior aspect of the neck. extends from external occipital protuberance to the spinous processes of the cervical vertebrae in the saggital plane. serves as attachment for muscles and contributes to posterior stability of the neck. |
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Term
| elevation of upper trapezius |
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Definition
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Term
| retraction of upper and lower trapezius |
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Definition
| sections show most activity |
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Term
| greatest activity of trapezius |
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Definition
| whole is seen in the upward rotation of the scapula accompanying abduction of the humerus. |
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Term
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Definition
upper fiber: elevation of the scapula, extension of the head.
mid fibers: elevation, upwards rotation, and adduction.
lower fibers: depression, adduction, and upward rotation. used in preventing the glenoid fossa from being pulled during the lifting of objects. |
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Term
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Definition
| dominate upward rotation during humeral abduction and shoulderflexion. |
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Term
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Definition
upper fibers: neck flexion
mid fibers: neck flexion, partner passively pulling the scapula into full protraction.
lower fibers: lying on you side having a partner passively pull the scapula into full elevation and protraction. |
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Term
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Definition
o-spionous processes c-7, tl-5.
i-major- medial border scapula, inferior to the spine of the scapula |
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Term
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Definition
O- ligamentum nuchae, spinous process of c7 and t1
I- medial border base of the spine of the scapula |
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Term
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Definition
| scapular adduction, downward rotation due to its upwards oreientaion to the scapula and slight elevation. |
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Term
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Definition
| work closely with the trapezius to maintain proper scapular positon. most active in stabilizing the scapula during humeral abduction. stabilize the scapla during shoulder flexion especially when flexion reaches 150 degrees or greater. stretched passively moving the scapula into full protraction while maintaining depression |
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Term
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Definition
o- transvers processes c1-4.
I- medial border of the scapula superior to the spine of the scapula.
A- elevation, downward rotation of the scapula, neck extension, and lateral flexion of the neck. weight of the arm coupled with the pull of the levator scapula combine to form a force couple to rotate the scapula downward. If the levator scapulae
rotates downward only when the weight of the arm
prevents it from adducting the scapula, it could be assumed that the trunk must be in the erect position for gravity to have this effect. |
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Term
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Definition
O: anterior aspect of the ribs 3 4 & 5
I: coracoid process of the scapula
A: abduction, depression, downward rotation, upward and lateral tilt
has an important function of lifting the ribs during forced inspiration and proper scapula positioning |
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Term
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Definition
O: lateral Surface of ribs 1-9
I: entire medial border (vertebral) of the scapula
A: abduction, upward rotation and lateral tilt. combine a force couple to accomplish upward rotation of the scapula. important in reaching and pushing. can be stretched facing a corner and placing each hand at shoulder level on the two wall, as you len in attempt to place your nose in the corner. |
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Term
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Definition
O: superior aspect of the 1st rib at the junction with its coastal cartilage
I: inferior groove mid clavicle
A: stabilization and protection of the S-C joint. prevents extreme elevation and protraction of the clavicle. |
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Term
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Definition
| formed by the articulation of the head of the humerus and with the glenoid fossa. ball and socket. enveloped in a loose sleeve like structure. |
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Term
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Definition
| fibrous cartilage that forms a ring around the peripheral articular surface of the glenoid fossa. serves to deepen the glenoid fossa for added stability. inferior aspect is rounded and continuous with the glenoid fossa. superior aspect overhangs the glenoid fossa and is more crescent shaped and is loosely attached to the glenoid fossa. |
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Term
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Definition
located on the superior aspect of the labrium.
O: serves to add anterior stability to the glenohumeral joint and to depress the humeral head |
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Term
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Definition
| limits external rotation when the arm is abducted and the externally rotated position. |
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Term
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Definition
| forward movement in the saggital plane |
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Term
| hyperflexion of G-H joint |
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Definition
| forward movement in the sagittal plan that exceeds 180 degrees |
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Term
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Definition
| backward movement 0-60 degrees |
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Term
| hyperextention of G-H joint |
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Definition
| backward movement that exceeds 60 degrees |
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Term
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Definition
| movement away from the midline 0-180 degrees |
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Term
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Definition
| movement towards the midline- return from abduction |
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Term
| internal rotation of G-H joint |
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Definition
| rotation of the humerous around its mechanical axis so that the proximal aspect of the antebrachium turns laterally with the elbow at 90 degrees of flexion with with arm at the side or with the arm at 90 degrees of abduction the anterior aspect of the antebrachium moves inferior |
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Term
| external rotation of G-H joint |
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Definition
| rotation of the humerus around its mechanical axis so that the proximal aspect of the antbrachium turns medially with the elbow at 90 degrees flexion with the arm at the side or with the arm at 90 degrees of abduciton the anterior aspect of the antebrachium moves superiorly |
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Term
| horizontal adduction of G-H joint |
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Definition
| forward movement of the abducted humerous in a horizontal plane |
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Term
| horizontal abduction of G-H joint |
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Definition
| a backward movement of the abducted humerous in a horizontal plane |
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Term
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Definition
O: clavicular fibers- medial half of the anterior clavicle
O: sternal fibers- anterior surface of the coastal cartilages of the 1st six ribs and adjacent sternum
I: lateral lip of the intertubular groove of the humerus
fan shaped muscle of the chest, converges to a flat tendon which twists on itself so that lowest fibers become the uppermost point of attachment. |
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Term
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Definition
| upper. internal rotation, horizontal adduction, flexion, abduction about 90 and addcution below 90 of G-H joint |
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Term
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Definition
| lower. internal rotation, horizontal adduction, extension and adduciton of G-H joint |
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Term
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Definition
o- coracoid process of the scapula
i: mid medial aspect of the humerus
A: flexion, adduction, and horizontal adduction of the G-H joint. not powerful. lends itself to forward and horizontal movements. strongest in horizontal adduction. |
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Term
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Definition
O: lh. supraglenoid tubercle of the scapula and superior lip of the glenoid labrium.
O: sh. corcoid process
I: radial tuberosity and the biceptal aponeurosis. A- elbow flexion(both heads), supination of the antebrachium(both heads),shoulder flexion(sh), shoulder adduction(sh), & shoulder abduction(lh) when externally rotated.
assists in providing anteriro stability for the shoulder. |
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