Thoracic Spine Flashcards
What movements are considered Elevation of the UE?
-flexion
-abduction
-scaption
What is the normal degrees of external rotation ( from base & from 90 abduction)?
base: 40-60
90 abduction: 90 - 100
What are the ROMs of the total UE?
Elevation
Internal Rotation
External Rotation
Extension
Adduction
Horizontal Adduction & Abduction
FIR
FER
What are sagittal planes of motion of the shoulder?
-ER & IR from 90 abduction
-Flexion
-Extension
What are the transverse planes of motion of the shoulder?
-ER from base position
-Horizontal AB/ADDuction
What is the normal degrees of IR from 90 ABD?
45-60
What is the normal degrees for extension?
60-80
What is the normal degree for horizontal adduction & horizontal abduction?
ADD: 40-60
ABD: 120-140
Describe the Scapulothoracic articulation in coronal plane static posture
-Superior angle at T2
-Inferior angle at T7
-2” distance between the root of spine of scapular & T3
-3-5° of upward scapular rotation at rest
-Upward rotation promotes inferior stability
Describe positional capsuloligamentous disadvantage?
Scapula “dumping” mechanism appears to be “relaxation” coracohumeral & superior glenohumeral ligament
Adaptive lengthening occurs so can no longer hold humeral head in glenohumeral
Potential for false positive sulcus test
Scapulothoracic Articulation → Sagittal Plane Static Posture?
Slight anterior tilting or anteflexion of 9° - 20°
What are the two translations for scapulothoracic motion?
Elevation/depression
protraction/retraction
What is the purpose of scapulothoracic motion?
Purpose is to appropriately position the glenoid to allow optimal motion
What are the three rotatory motions of scapulothoacic?
Upward/downward rotation
anterior/posterior tilting or tipping
medial/lateral rotation
Describe scapular elevation & depression
Elevation is a cephalad translation
Depression is a caudal translation
Produces clavicular elevation & depression
Coupled with anterior & posterior tilting
Describe protraction & retraction
Protraction is an “abduction” translation
Retraction is an “adduction” translation
Produces clavicular protraction & retraction
Coupled with medial & lateral rotation
What are the similarities and differences of anterior & posterior tilting?
Similar: Sagittal plane occurring about a M-L axis at the AC joint
Similar: Both are coupled with scapular retraction, protraction, upward & downward rotation=
Anterior Tilting: Anterior displacement of the superior angle & posterior displacement of the inferior angle
Posterior Tilting: Posterior displaced superior angle & anterior displaced inferior angle
Describe scapular medial & lateral rotation
Rotary motions occur about a vertical axis in region of the AC joint
Medial rotation directs the glenoid fossa anteriorly (and medially)
Opposite for lateral rotation
Coupled with protraction & retraction
What is winging of the scapula?
results from posterior displacement of the medial border of the scapula
Describe Scapular Upward rotation
Occurs about a perpendicular axis to the scapular body
Moving ICR → can slide so will shift out ro AC joint
Upward rotation results in superolateral displacement of the scapula’s inferior angle
Coupled with clavicular elevation (scapular upward)
How are the acromioclavicular joint structures stabilized?
conoid, trapezoid, & AC ligaments
What are the joint motions of the AC joint?
anterior/posterior tipping
medial/lateral rotation
small amount of upward/ downward rotation
SC joint motions are linked to (blank) motions
scapular (elevation/depression, protraction/retraction, posterior/anterior rotation)
What type of joint is sternoclavicular?
Sellar surface/saddle
