A Reliability Study of Multiplanar Radiographs for the Evaluation of SNAC Wrist Arthritis

Hand : Official Journal of the American Association for Hand Surgery
Eliana B SaltzmanChristopher S Klifto

Abstract

Background: Scaphoid nonunion advanced collapse (SNAC) is a common form of wrist arthritis, the treatment of which depends on the arthritic stage. The Vender classification serves to describe SNAC arthritis based on a single posteroanterior (PA) radiograph. The purpose of this study was to evaluate the intraobserver and interobserver agreement of the Vender classification, comparing multi versus single radiographic views. Methods: A retrospective review of patients with SNAC arthritis who underwent a proximal row carpectomy or a 4-corner fusion was performed. The included patients had 3 radiographic views of the pathologic wrist. Fifteen patients were analyzed by 5 blinded reviewers. Wrists were graded using the Vender classification first on the PA view and then using multiview radiographs. The intraobserver and interobserver agreement was determined using weighted kappa analysis. χ2 tests were calculated comparing the evaluation between single- versus multiview radiographs and determining a higher Vender stage. Results: Multiview radiographs demonstrated a higher intraobserver κw compared with single-view radiographs (0.72 vs 0.66), both representing substantial agreement. The average interobserver agreement was moderate (κw ...Continue Reading

References

Jul 1, 1987·The Journal of Hand Surgery·M I VenderD M Black
May 9, 2009·The Journal of Bone and Joint Surgery. American Volume·Paul J KaranicolasUNKNOWN Collaboration for Outcome Assessment in Surgical Trials (COAST) Musculoskeletal Group
Jun 5, 2013·Journal of Hand and Microsurgery·Fernando Travaglini PenteadoFlávio Faloppa
Apr 22, 2017·Journal of Wrist Surgery·Angela E LiScott W Wolfe
Aug 24, 2017·Hand : Official Journal of the American Association for Hand Surgery·Paul W L Ten BergDavid Ring

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