Classification Of ACJ Dislocation Flashcards Preview

Muculoskeletal III - Midterm > Classification Of ACJ Dislocation > Flashcards

Flashcards in Classification Of ACJ Dislocation Deck (7)
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1
Q

What is the system called?

A

Rockwood Classification System

2
Q

Type 1

A
Sprain of AC lig (all lig's intact)
Deltopectoral fascia intact
Radio graphic exam normal (CC distance/AC appearance)
ACJ tenderness
Minimal pain with UE motion
No pain in coracoclavicular interspace
3
Q

Type 2

A

Distal clavicle unstable horizontally (either anteriorly or posteriorly)
May be vertical instability (minimal or absent)
Disruption of AC lig’s
CC lig’s sprained
Deltopectoral fascia intact
Radiographic: CC distance < 25%/AC appearance widened
Distal clavicle slightly superior to acromion
Mobile to palpation
Tenderness in coracoclavicular space
Minimal pain with UE motion

4
Q

Type 3

A

Distal clavicle unstable horizontally and vertically
Disruption of AC lig’s, CC lig’s, and deltopectoral fascia
Radiographic: CC distance 25-30%/AC appearance widened
Distal clavicle appears superior to acromion
Mobile to palpation
Tenderness in coracoclavicular space
Coracoclavicular widening evident
ACJ reducible w/ upward force @ elbow
Severe pain w/ motion

5
Q

Type 4

A

Distal clavicle posteriorly displaced into trap and into P skin
Disruption of AC lig’s, CC lig’s and deltopectoral fascia
Radiographic: CC distance increased/AC appearance - posterior clavicle displacement
May be anterior dislocation of SCJ or P dislocation of ACJ
Tenderness in coracoclavicular space
ACJ irreducible
Pain w/ motion

6
Q

Type 5

A

More severe form of Type 3
Deltoid and trap stripped off acromion and clavicle
Disruption of AC lig’s, CC lig’s, and deltopectoral fascia
Radiographic: CC distance increased 2-3 fold
Shoulder presents w/ severe droop to downward displacement of humerus
May be sx from traction on brachial plexus
ACJ irreducible

7
Q

Type 6

A

I dislocation of distal clavicle
Disruption of AC lig’s and deltopectoral fascia
Coracoclavicular lig’s intact
Distal clavicle rests in subacromial or subcoracoid position
Radiographic: CC distance decreased
MOI: hyperabduction and ER w/ retraction of scapula (high-energy trauma)
Accompanied w/ concomitant pathology
Shoulder has flat appearance (prominent acromion)
Associated clavicle and upper rib fx’s
May be sx from traction on brachial plexus
ACJ irreducible