AO classification of proximal humerus fracture

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Proximal humerus fracture

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Mohammadmain Rezazadehsaatlou[2].

Overview[1][2]

The injuries of the ball-and-socket shoulder joint considered as the Proximal humerus fracture. It is more common among the elderly population following a low energy trauma such as falling. Meanwhile, A few people experience the axillary nerve damage such as reduced sensation around the middle deltoid and/or axillary artery involvement.


AO classification of proximal humerus fracture

AO classification of proximal humerus fractures:
type A: extra-articular unifocal (either tuberosity +/- surgical neck of the humerus)
  • A1: extra-articular unifocal fracture
  • A2: extra-articular unifocal fracture with impacted metaphyseal fracture
  • A3: extra-articular unifocal fracture with non-impacted metaphyseal fracture
type B: extra-articular bifocal (both tuberosities +/- surgical neck of the humerus or glenohumerus dislocation)  
  • B1: extra-articular bifocal fractures with impacted metaphyseal fracture
  • B2: extra-articular bifocal fractures with non-impacted metaphyseal fracture
  • B3: extra-articular bifocal fractures with glenohumerus joint dislocation
type C: extra-articular (anatomical neck) but compromise the vascular supply of the articular segment
  • C1: anatomical neck fracture, minimally displaced
  • C2: anatomical neck fracture, displaced and impacted
  • C3: anatomical neck fracture with glenohumerus joint dislocation

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See also


References

  1. Stone MA, Namdari S (April 2019). "Surgical Considerations in the Treatment of Osteoporotic Proximal Humerus Fractures". Orthop. Clin. North Am. 50 (2): 223–231. doi:10.1016/j.ocl.2018.10.005. PMID 30850080.
  2. Lin KM, James EW, Spitzer E, Fabricant PD (February 2018). "Pediatric and adolescent anterior shoulder instability: clinical management of first-time dislocators". Curr. Opin. Pediatr. 30 (1): 49–56. doi:10.1097/MOP.0000000000000566. PMID 29135565.