Clavicle fx Flashcards
Allman classifican
- Proximal 1/3: Group III (80%)
- Distal 1/3: Group II (15%)
- Middle 1/3: Group I (5%)
- Classified by how common
This distal clavicle (group II Allman) is further classified into what
Neer modification
Describe the Neer type I classification of distal clavicle fx
- Minimally displaced
- Fx occur LATERAL to coracoclavicular ligament
- Ligaments intact
- Stable
Describe the Neer type IIA classification of distal clavicle fx
- Displaced fx occur MEDIAL to coracoclavicular ligament
- Ligaments intact, but medial clavicle not anchored
- unstable
Describe the Neer type IIB classification of distal clavicle fx
- Displaced Fx occurs in between conoid L. and Trapezoid L.
- Conoid L ruptured
- Unstable
Describe the Neer type III classification of distal clavicle fx
- Fx occur lateral to coracoclavicular ligament AND extends into AC joint (intra-articular)
- Ligaments intact
- Stable
Describe the Neer type IV classification of distal clavicle fx
Physeal fx in skeletally immature
Describe the Neer type V classification of distal clavicle fx
Comminuted fx
What Neer classifications require operative fixation
IIA, IIB, and V
what other Allman classifications require surgery
- Open, threatened skin
- Group I: Shortened >2cm, over 100% displaced, Z pattern
- Group III, posterior
What are the two coracoclavicular ligaments and location of both
- Trapezoid: Lateral
- Conoid: medial
In a displaced mid shaft clavicular fx, what pulls the medial fragment posterosuperiorly?
SCM
What nerve is at risk during the approach to the clavicle
Supraclavicular sensory nerves
What component of the AC ligament is the strongest
Superior
What complication do you worry about the most in intramedullary nailing of the clavicle
Hardware migration
