Proximal Humerus Fracture Classification

 A1 Extra-articular unifocal fracture, tuberosity

• For subdivision see AO Classification.
• A1.1=greater tuberosity fx, Nondisplaced (<5mm displacement): Sling, start PT within 2 wks for passive ROM only.  Start strengthening, active ROM after fracture union is evident.
• A1.2=greater tuberosity fx Displaced (displaced >5mm): CRPP vs ORIF (Flatow JBJS 73A 73:1213;1991).
• A1.3=with GH dislocation: GH joint should be reduced ASAP. Greater tuberosity fractures are then treated based on the amount of displacement seen on post-reduction xrays.
• See also Greater Tuberosity fracture.

A2 Extra-articular unifocal fracture, impacted metaphyseal

• For subdivision see AO Classification.
• <66% translation: sling, start PT within 2 wks for passive ROM only.  Start strengthening, active ROM after fracture union is evident.
• >66% translation: CRPP vs ORIF

A3 Extra-articular unifocal fracture, non-impacted metaphyseal

• For subdivision see AO Classification.
• <66% translation: sling, start PT within 2 wks for passive ROM only.  Start strengthening, active ROM after fracture union is evident.
• >66% translation:CRPP vs ORIF

B1 Extra-articular bifocal fracture, with metaphyseal impaction

• For subdivision see AO Classification.

B2 Extra-articular Bifocal fracture, without metaphyseal impaction

• For subdivision see AO Classification.

B3 Extra-articular bifocal fracture, with GH dislocation

• For subdivision see AO Classification.

C1 Articular fracture, with slight displacement

• For subdivision see AO Classification.

C2 Articular fracture, impacted with marked displacement

• For subdivision see AO Classification.

C3 Articular fracture, with GH dislocation

• For subdivision see AO Classification.