title: The Knee Society Index of Severity for failed total knee arthroplasty: practical application.
abstract: Previous classifications of severity for total knee arthroplasty revisions have been based largely on bone loss of the femur and tibia. These approaches failed to address the more technically difficult issues in revision surgery such as surgical exposure, contractures, extremity alignment, implant removal, soft tissue stability (in the anteroposterior and in the sagittal planes), extensor mechanism integrity, and patellar revisability. Through the Knee Society, the authors developed a severity index that incorporated these latter factors into one measure. The current authors describe the application of the Knee Society Index of Severity for failed total knee arthroplasty and its method of scoring.
authors.affiliation: Department of Orthopaedic Surgery and CORC, University of Minnesota, Minneapolis 55455, USA.
authors.forename: K J
authors.initials: KJ
authors.lastname: Saleh
authors.forename: A
authors.initials: A
authors.lastname: Macaulay
authors.forename: D M
authors.initials: DM
authors.lastname: Radosevich
authors.forename: C R
authors.initials: CR
authors.lastname: Clark
authors.forename: G
authors.initials: G
authors.lastname: Engh
authors.forename: A
authors.initials: A
authors.lastname: Gross
authors.forename: S
authors.initials: S
authors.lastname: Haas
authors.forename: N A
authors.initials: NA
authors.lastname: Johanson
authors.forename: K A
authors.initials: KA
authors.lastname: Krackow
authors.forename: R
authors.initials: R
authors.lastname: Laskin
authors.forename: G
authors.initials: G
authors.lastname: Norman
authors.forename: J A
authors.initials: JA
authors.lastname: Rand
authors.forename: L
authors.initials: L
authors.lastname: Saleh
authors.forename: G
authors.initials: G
authors.lastname: Scuderi
authors.forename: T
authors.initials: T
authors.lastname: Sculco
authors.forename: R
authors.initials: R
authors.lastname: Windsor
mesh_terms: D019645:Arthroplasty, Replacement, Knee; D006801:Humans; D007720:Knee Prosthesis; D011379:Prognosis; D011475:Prosthesis Failure; D012086:Reoperation; D012307:Risk Factors; D012720:Severity of Illness Index