SHOULDER COMPLEX INTRODUCTION Flashcards
SH complex is described as ______ joint
MOST MOBILE
SH mobility is provided by the (1) _____ joints and (2) _____ joints comprising the (3)______ areas
- True/False
- False/true
- 6 moving areas
What are the true joints that contributes to the mobility of the SH complex (3)
- SC joint
- AC joint
- GH joint
This is the MOST IMPORTANT true joint of the SH complex
GH joint
This is the MOST IMPORTANT false joint of the SH complex
Scapulothoracic jt
The false joint is also known as _____ joint
Functional joint
What are the false joints that contributes to the mobility of the SH complex (3)
- biccipital groove
- Subacromial space
- ST joint
Characteristic of the SH complex when it comes to stability
LESS static/structural stability
GOOD dynamic stability
Who provides the MAJOR dynamic stability of the SH complex
rotator cuff muscles (SITS)
What are the rotator cuff muscles (4)
supraspinatus
infraspinatus
teres minor
subscapularis
Who provides the major static stability of the SH complex
SC joint as it is the only joint that connects to SH to the axial skeleton
2 movements each from SC and ST JT
These are the necessary components for full arm elevation (4):
- Elevation of clavicle
- Posterior rotation of clavicle
- Posterior tilting of scapula
- Upward rotation of scapula
What phase of the SH elevation is this?
HUMERUS: 30deg
SCAPULA: setting phase
CLAVICLE: elevation
Phase 1 (<30deg of SH elevation)
What phase of the SH elevation is this?
HUMERUS: 60 deg
SCAPULA: 30 deg
CLAVICLE: post. rotation
Phase 3 (>90deg of SH elevation)
What phase of the SH elevation is this?
HUMERUS: 40 deg
SCAPULA: 20 deg
CLAVICLE: elevation
Phase 2 (~90deg of SH elevation)
