Shoulder Flashcards
What are the scapular motions?
Upward rotation
External rotation
Posterior tilting
What is normal scapulohumeral rhythm?
2:1 relationship btwn GH elevation & scapular upward rotation
Scapular dyskinesia test
- test of manually repositioning the scapula to reduce or eliminate a painful arc
Similar tests: - forward flexion w/ a light dumbbell
- Light wall push with finger tips
What are the static stabilizers of the AC joint?
- AC ligament
- Coracoclavicular ligaments
(2 = trapezoid & conoid)
What 2 ligaments make up the coracoclavicular ligament?
- trapezoid
- conoid
What are the dynamic stabilizers of the AC Joint?
- deltoid
- trapezius
How are AC joint injuries classified?
Rockwood grading classification model
Grade I: AC joint sprain
Sprain of AC ligaments:
- AC & CC ligaments are intact
Grade II: AC joint sprain
- AC ligaments are ruptured
- CC ligaments are intact
- clavicle is unstable to direct stress tests
- often described as a “subluxation”
Grade III: AC joint sprain
- complete disruption of BOTH the AC & CC ligaments
- delto-trapezial fascia intact
- often described as a “dislocation”
- deformity present w/ clavicle appearing elevated
- clavicle unstable in both vertical and horizontal plane
Grade IV: AC joint sprain
Distal clavicle is posteriorly displaced into trapezius
- posterior deformity present
Grade V: AC joint sprain
More severe form of grade III
- both AC & CC ligaments disrupted
- delto-trapezial fascia disrupted
- Sx:
- downward displacement of scapula
- psedo lateral clavicle elevation
Grade VI: AC Joint sprain
Inferior displacement of the distal clavicle
- Severe trauma
What does an AC step deformity indicate?
@ least a Type III injury
Management for AC joint Injuries:
- Type I-II
- Type III
- Type IV-V
- Type I-II: Non-operative management
- Type III: Debated
- Type IV-V: Surgical repair recommended
What are the return to sport guidelines for AC injuries:
- Grade I:
- Grade II:
- Grade III:
Grade I: 2-4 weeks
Grade II: 4-8 weeks
Grade III: 6-8 weeks
Describe a Bankart lesion
- lesion to the anterior part of the glenoid labrum
- commonly seen w/ subluxations or dislocations
What type of Bankart lesion will be seen in a posterior dislocation?
Reverse Bankart
What are the 2 types of bankart lesions?
Soft tissue:
- anterioinferior labrum avulsion damage of the glenoid rim
- inferior GH ligament may be torn