Eaton classification of volar plate avulsion injury
Citation, DOI, disclosures and article data
At the time the article was created Praveen Jha had no recorded disclosures.
View Praveen Jha's current disclosuresAt the time the article was last revised Henry Knipe had the following disclosures:
- Integral Diagnostics, Shareholder (ongoing)
- Micro-X Ltd, Shareholder (ongoing)
These were assessed during peer review and were determined to not be relevant to the changes that were made.
View Henry Knipe's current disclosures- Eaton classification
- Eaton's classification
The Eaton classification can be used to classify volar plate avulsion injuries of the fingers.
On this page:
Usage
Along with the Keifhaber-Stern classification, this classification is considered (c. 2016) one of the most useful classifications for the management of volar plate avulsion injuries 2.
Knowledge of the orthopedic Eaton classification is practical when reporting volar plate injury of the PIP joint as for Eaton types I, II and IIIa, conservative management is recommended with surgical management for Eaton types IIIb 2.
Classification
Eaton type I: hyperextension mechanism of injury with an avulsion of the volar plate and a longitudinal tear of the collateral ligaments; the opposing joint surface remain congruent
Eaton type II: dorsal dislocation of the PIP joint with avulsion of the volar plate; there is complete tear of the collateral ligament
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Eaton type III
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Eaton type IIIa
fracture dislocation with an avulsed small fragment <40% of the articular surface
dorsal aspect of the collateral ligament remains attached to the middle phalanx
Eaton type IIIb: fracture dislocation with fracture or impaction of the articular surface of >40%
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History and etymology
This classification was proposed by Eaton and Malerich in 1980 1.
Quiz questions
References
- 1. Eaton R & Malerich M. Volar Plate Arthroplasty of the Proximal Interphalangeal Joint: A Review of Ten Years' Experience. J Hand Surg Am. 1980;5(3):260-8. doi:10.1016/s0363-5023(80)80011-6 - Pubmed
- 2. Pattni A, Jones M, Gujral S. Volar Plate Avulsion Injury. Eplasty. 2016;16:ic22. PMC4894366 - Pubmed
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