Tronzo classification of trochanteric fractures
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At the time the article was created Leonardo Lustosa had no recorded disclosures.View Leonardo Lustosa's current disclosures
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The Tronzo classification of trochanteric fractures is a classification system used when assessing intertrochanteric fractures.
The Tronzo classification is proposed to provide a guide to the management of these fractures.
Due to its simplicity, the Tronzo classification has become the preferred classification system by many institutions. However, many studies have shown the Tronzo classification has only poor inter and intraobserver reproducibility 1-3.
- type I: incomplete fracture
- type II: no posteromedial comminution, lesser trochanter may be fractured
- type III: posteromedial comminution, the shaft is medially displaced with the neck beak impacted into it
- type III variant: type III combined with greater trochanter fracture
- type IV: posteromedial comminution, the shaft is laterally displaced
- type V: reverse obliquity
- 1. Urrutia J, Zamora T, Besa P, Zamora M, Schweitzer D, Klaber I. Inter and Intra-Observer Agreement Evaluation of the AO and the Tronzo Classification Systems of Fractures of the Trochanteric Area. Injury. 2015;46(6):1054-8. doi:10.1016/j.injury.2015.03.018 - Pubmed
- 2. Oliveira F, Basile R, Pereira B, da Cunha R. Evaluation of the Reproducibility of the Tronzo Classification for Intertrochanteric Fractures of the Femur. Revista Brasileira De Ortopedia (English Edition). 2014;49(6):581-5. doi:10.1016/j.rboe.2014.11.001 - Pubmed
- 3. Mattos C, Jesus A, Floter M, Nunes L, Sanches B, Zabeu J. Reproducibility of the Tronzo and AO Classifications for Transtrochanteric Fractures. Revista Brasileira De Ortopedia (English Edition). 2015;50(5):495-500. doi:10.1016/j.rboe.2015.08.002 - Pubmed