Kines: Shoulder Complex

shoulder complex

clavicle, scapula, humerus, sternum/ribs

shoulder complex purpose

sacrifice stability for the purpose of mobility

when one muscle fails to perform it's "job", how can the joint's natural kinematic sequencing be affected?

if one fails, another muscle helps excessively

sternum consists of?

- manubrium
- body
- xiphoid process

what joints are most overlooked and underappreciated when treating shoulder dysfunction?

SC joint, AC joint, and ST joint

clavicle: oriented just above the _______ plane and about ______ degrees posterior to the ______ plane

horizontal, 20, frontal

clavicle: ____ end articulates with the sternum

medial

clavicle: the _____ facet (inferior surface) lies against the _____ rib

costal, first

clavicle: the _____ tuberosity, which lies lateral and posterior to the costal facet, serves as an _____ for the costoclavicular ligaments

costal, attachment

clavicle: the ____ facet.is where the clavicle meets the ____

acromial, scapula

clavicle: just inferior to the ____ end of the clavicle, you can find the ____ tubercle and the ____ line

lateral, conoid, trapezoid

clavicle: acts as a strut to attach/connect the UE to the _____ ______

axial skeleton

clavicle: protects _____ and vessels traveling ____ and towards the extremities

nerves, deep

scapula medial (vertebral) border

runs parallel to the vertebral column

scapula lateral (axillary) border

runs from the inferior angle to the lateral angle

scapula superior border

runs from the superior angle to the coracoid process

scapula: spine of scapula separates the ____ fossa and the ____ fossa

supraspinatus, infraspinatus

scapula: the ____ end of the spine diminishes in height at the root of the spine, yet ____ gains height and flattens into the broad acromion

medial, laterally

scapula: the ____ extends laterally and anteriorly forming a ____ shelf over the head of the humerus

acromion, horizontal

scapula: the ____ facet of the acromion serves as one half of the ____ joint

clavicular. AC

scapula: articulates with the ____ of the humerus at the concave ____ fossa

head, glenoid

scapula: slope of the fossa if inclined upward about ___ degrees relative to a horizontal axis through the body of the scapula

4

@ rest, the scapula is normally positioned against the posterior-lateral surface of the ____, with the glenoid fossa facing about ____ degrees anterior to the frontal plane

thorax, 30-35

scapula: located at the superior and inferior rims of the ____ fossa are the ____ and _____ tubercles

glenoid, supra and infraglenoid

scapula: medial to the superior glenoid, you can find the ____ ____ process

"crows beak" (coracoid process)

scapula: the _____ surface of the scapula is known as the subscapular fossa

anterior

subacromial space

contains the tendon of the supraspinatus muscle, the subacromial bursa, the superior portion of capsule, and the long head of the biceps

the humeral head is almost a perfect sphere, projecting ____, ____, ____

medially, superiorly, and posteriorly

head of the humerus serves as the ____ component of the GH joint

convex

humeral head faces medially and superiorly, forming an angle of inclination of ____ degrees, relative to the shaft of the humerus

135

angle of retroversion

head of humerus is rotated posteriorly about 30-35 degrees within the horizontal place, relative to medial-lateral axis through the elbow

B

coxa vara

C

coxa valgus

the ____ neck separates the smooth articular surface of the humeral head from the ____ shaft

anatomic, proximal

the ____ and lesser tubercles surround the anterior and lateral circumference of the extreme proximal end of the ____

greater, humerus

proximal-to-mid humerus: crests extend from the tubercles forming a groove, which houses the tendon of the _____; groove is known as the ______

long head of the biceps, intertubercular groove

deltoid tuberosity

distal and lateral to the bicipital groove

proximal-to-mid humerus: the ____ groove runs obliquely across the posterior surface of the humerus

radial

radial groove separates what?

the proximal attachments of the medial and lateral heads of the triceps

what nerve is running within the radial groove as it heads towards the distal-lateral side of the humerus?

radial nerve