Shoulder Region Bony/True Joints Flashcards
sternoclavicular joint articulating surfaces
medial end of clavicle to the clavicular facet of sternum and superior border of first rib
clavicle = convex vertically (y-axis)
sterum = concave anteroposteriorly (x-axis)
sternoclavicular joint type of joint
saddle, planar synovial joint
sternoclavicular joint degrees of freedom
three degrees of freedom:
* elevation-depression
* protraction-retraction
* transverse rotation-axial rotation
sternoclavicular joint open pack position
arm resting by side
sternoclavicular joint close pack position
full elevation and protraction
sternoclavicular joint capsular pattern
pain at extremes of ROM, especially in horizontal adduction and full elevation
acromioclavicular joint articulating surfaces
acromial facet on clavicle and clavicular facet on acromion
acromioclavicular joint type of joint
planar/gliding joint
acromioclavicular joint degrees of freedom
Brunnstrom
three degrees of freedom:
* elevation-depression
* abduction-adduction
* upward rotation (20°-30°)-downward rotation
acromioclavicular joint degrees of freedom
Norkin
three degrees of freedom:
* internal rotation-external rotation
* scapular tilting (anterior-posterior)
* upward rotation-downward rotation
acromioclavicular joint open pack position
arms resting by side
acromioclavicular joint close pack position
90° abduction
acromioclavicular joint capsular pattern
pain at extremes of ROM, horizontal adduction and full elevation
glenohumeral joint articulating surfaces
large spherical head of humerus and small glenoid cavity of scapula
glenohumeral joint type of joint
ball-and-socket joint/enarthrodial joint/ multiaxial joint
glenohumeral joint degrees of freedom
three degrees of freedom:
* flexion-extension
* abduction-adduction
* internal rotation-external rotation
glenohumeral joint open pack position
55° abduction, 30° horizontal adduction
glenohumeral joint close pack position
ABER
glenohumeral joint capsular pattern
EX > AB > IR
sternoclavicular joint elevation osteokinematics
30° to 45°
sternoclavicular joint elevation arthrokinematics
convex part (clavicle)
superior roll, inferior slide
sternoclavicular joint depression osteokinematics
from resting position, 5° to 10°
sternoclavicular joint depression arthrokinematics
convex part (clavicle)
inferior roll, superior slide
sternoclavicular joint elevation/depression plane and axis
frontal plane, anteroposterior axis (z-axis)
sternoclavicular joint retraction osteokinematics
from resting position, 15° to 30°
sternoclavicular joint retraction arthrokinematics
concave part (clavicle)
posterior roll, posterior slide
sternoclavicular joint protraction osteokinematics
from resting position, 15° to 30°
sternoclavicular joint protraction arthrokinematics
concave part (clavicle)
anterior roll, anterior slide
sternoclavicular joint protraction/retraction plane and axis
transverse plane, vertical axis (y-axis)
sternoclavicular joint axial/transverse rotation osteokinematics
40° to 50°
sternoclavicular joint axial/transverse rotation arthrokinematics
clavicle spins on lateral surface of articular disc
sternoclavicular joint axial/transverse rotation plane and axis
transverse plane, vertical axis (y-axis)
acromioclavicular joint osteokinematics
Brunnstrom
elevation-depression
abduction-adduction
upward rotation (20°-30°)-downward rotation
acromioclavicular joint osteokinematics
Norkin
medial rotation-lateral rotation
scapular tilting (anterior-posterior)
upward rotation-downward rotation
acromioclavicular joint arthrokinematics
joint surfaces are flat, roll and slide do not occur
glenohumeral joint flexion osteokinematics
180°
glenohumeral joint flexion arthrokinematics
concave part (humerus)
anterior roll, posterior slide
glenohumeral joint extension osteokinematics
60°
glenohumeral joint extension arthrokinematics
convex part (humerus)
posterior roll, anterior slide
glenohumeral joint flexion/extension plane and axis
sagittal plane, transverse/medio-lateral axis (x-axis)
glenohumeral joint abduction osteokinematics
180°
glenohumeral joint abduction arthrokinematics
convex part (humerus)
superior roll, inferior slide
glenohumeral joint adduction osteokinematics
ewan ko!
glenohumeral joint adduction arthrokinematics
convex part (humerus)
inferior roll, superior slide
glenohumeral joint internal rotation osteokinematics
90°
glenohumeral joint internal rotation arthrokinematics
convex part (humerus)
anterior roll, posterior slide
glenohumeral joint external rotation osteokinematics
90°
glenohumeral joint external rotation arthrokinematics
convex part (humerus)
posterior roll, anterior glide
glenohumeral joint internal/external rotation plane and axis
horizontal/transverse plane, vertical/longitudinal axis (y-axis)
glenohumeral joint abduction/adduction plane and axis
frontal plane, anteroposterior axis (z-axis)