Hawkins Classification (Talar Neck Fracture)
Hawkins classification (Hawkins 1970; type IV added Canale-Kelly 1978) of a talar neck fracture — the fracture pattern of a fracture of the neck of the talus, which correlates with the risk of avascular necrosis (AVN) of the talar body.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Hawkins type
- III — displaced, subtalar + ankle dislocation
Result: Hawkins type III: displaced talar neck fracture with dislocation from the subtalar and ankle joints; AVN risk ~70-100%; a more severe pattern.
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What the result means
- Type I / II
- Nondisplaced, no dislocation, AVN ~0-15% (I); displaced with subtalar dislocation, AVN ~20-50% (II).
- Type III
- Displaced with dislocation from the subtalar and ankle joints. AVN ~70-100%. A more severe pattern.
- Type IV
- Type III plus talonavicular dislocation (Canale-Kelly). The highest AVN risk. A more severe pattern.
What you enter
- Hawkins type
How this is calculated
Hawkins LG. Fractures of the neck of the talus. J Bone Joint Surg Am. 1970;52(5):991-1002. Type IV: Canale ST, Kelly FB Jr. J Bone Joint Surg Am. 1978;60(2):143-156. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.