You are here

Clavicle Fracture Classification

 Allman Classification of clavicle shaft fracture

Allman Classification (Allman FL, JBJS 49A;774:1967)



Type I Clavicle shaft fracture xray

Group I - Middle 1/3 Clavicle Fracture

  • 69%-85% of clavicle fractures.
  • 0.13%-13% non-op nonunion rate overall
  • Generally treated non-oeratively
  • No difference between sling and figure-8 (Stanly, Injury 19;162:1988)
  • Closed reduction not helpful (Hill, JBJS 79B;537:1997)
  • 31% of non-op patients report shoulder weakness, fatigue, paresthesias and asymmetry.
  • Shortening >18 mm in males or >14 mm in females is associated unsatisfactory result. (Lazarides S, JSES 2006;15:191)
  • Operative indications=open fx, NVI, displaced fx with impending skin compromise, shortening >20mm, significant comminution, scapulothoracic dissociation.  Consider for neurologic disorders, floating shoulder, bilateral fx, cosmesis, ipsiliateral UE fx.
  • See Clavicle Fx ORIF Technique.
Distal clavicle fracture classification

Group II - Lateral Clavicle Fracture

Medial clavicle fracture xray

Group III-Medial Clavicle Fracture

  • Fracture in the medial 1/3 of clavicle
  • 3%-6% of clavicle fractures



The information on this website is intended for orthopaedic surgeons.  It is not intended for the general public. The information on this website may not be complete or accurate.  The eORIF website is not an authoritative reference for orthopaedic surgery or medicine and does not represent the "standard of care".  While the information on this site is about health care issues and sports medicine, it is not medical advice. People seeking specific medical advice or assistance should contact a board certified physician.  See Site Terms / Full Disclaimer