BACKGROUND: End-stage ankle arthritis should have an appropriate classification to assist surgeons in the management of end-stage ankle arthritis. Outcomes research also requires a classification system to stratify patients appropriately. MATERIALS AND METHODS: Six fellowship trained foot and ankle surgeons met on two occasions to derive a classification system for end-stage ankle arthritis. A four-part classification system was designed. Four surgeons reviewed blinded patient profiles and radiographs on two occasions to determine the inter- and intraobserver reliability. RESULTS: Good interobserver reliability (kappa = 0.62) and intraobserver reproducibility (kappa = 0.72) was demonstrated for the classification system. CONCLUSION: The COFAS classification system appears to be a valid tool for the management and research of end-stage ankle arthritis.
BACKGROUND:End-stage ankle arthritis should have an appropriate classification to assist surgeons in the management of end-stage ankle arthritis. Outcomes research also requires a classification system to stratify patients appropriately. MATERIALS AND METHODS: Six fellowship trained foot and ankle surgeons met on two occasions to derive a classification system for end-stage ankle arthritis. A four-part classification system was designed. Four surgeons reviewed blinded patient profiles and radiographs on two occasions to determine the inter- and intraobserver reliability. RESULTS: Good interobserver reliability (kappa = 0.62) and intraobserver reproducibility (kappa = 0.72) was demonstrated for the classification system. CONCLUSION: The COFAS classification system appears to be a valid tool for the management and research of end-stage ankle arthritis.
Authors: Daniel C Norvell; Jane B Shofer; Sigvard T Hansen; James Davitt; John G Anderson; Donald Bohay; J Chris Coetzee; John Maskill; Michael Brage; Michael Houghton; William R Ledoux; Bruce J Sangeorzan Journal: Foot Ankle Int Date: 2018-05-31 Impact factor: 2.827
Authors: Maksim A Shlykov; Ian Savage-Elliott; Timothy M Lonergan; Sandra E Klein; Jonathon D Backus; Jeffrey E Johnson; Jeremy J McCormick Journal: Foot Ankle Orthop Date: 2022-03-19