title: ANALYSIS OF THE REPRODUCIBILITY OF TIBIAL PLATEAU FRACTURES' CLASSIFICATION.
abstract: OBJECTIVE
  To assess the inter-observer agreement of three tibial plateau fracture classifications: Schatzker, AO Group, and Hohl.
  
  
  METHODS
  Nine physicians of different levels of expertise (six Orthopaedic Residents - OR - and three Orthopaedic Attendings - OA) classified 50 tibial plateau fractures.
  
  
  RESULTS
  There was a low to moderate agreement between OR and OA on the three classification systems. A straight correlation was found between the year of Residence and an increase on the level of agreement on the AO group and Hohl classifications. This was partially seen on the Schatzker classification. Kappa ranged from 0.344 to 0.577, 0.36 to 0.499, and 0.278 to 0.465 for the Hohl, AO group, and Schatzker systems, respectively.
  
  
  CONCLUSIONS
  With a level of 0.1, there was a significant agreement on the three classifications among the physicians. When comparing ORs to OAs, the three studied classifications show low to moderate consistency, with the Hohl classification showing the highest level of agreement between OR.
authors.affiliation: Orthopedist; Coordinator, Knee Surgery Department, Orthopedics and Traumatology Clinic, Hospital Municipal Miguel Couto (SOT-HMMC), Rio de Janeiro, Brazil.
authors.forename: Rodrigo Pires E
authors.initials: RP
authors.lastname: Albuquerque
authors.affiliation: Orthopedist; Head, Medical Residency Program, SOT-HMMC, RJ, Brazil.
authors.forename: Vincenzo
authors.initials: V
authors.lastname: Giordano
authors.affiliation: Orthopedist; Assistant, SOT-HMMC, RJ, Brazil.
authors.forename: Alexandre
authors.initials: A
authors.lastname: Pallottino
authors.affiliation: Orthopedist; SOT-HMMC, RJ, Brazil.
authors.forename: Tannous
authors.initials: T
authors.lastname: Sassine
authors.affiliation: Orthopedist; SOT-HMMC, RJ, Brazil.
authors.forename: Rodrigo
authors.initials: R
authors.lastname: Canedo
authors.affiliation: Orthopedist; SOT-HMMC, RJ, Brazil.
authors.forename: Juliana
authors.initials: J
authors.lastname: Pina
authors.affiliation: Head, SOT-HMMC, RJ, Brazil.
authors.forename: Ney Pecegueiro
authors.initials: NP
authors.lastname: do Amaral
keywords: Evaluation; Tibial fractures/classification; Validation studies