Dorsal Subluxation of the Proximal Interphalangeal Joint After Volar Base Fracture of the Middle Phalanx

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Abstract

Background: Treatment decisions regarding volar base fractures of the middle phalanx depend on whether the proximal interphalangeal (PIP) joint is reduced. Our aim was to study the agreement among hand surgeons in determining whether the PIP joint fractures are subluxated and to study the factors associated with subluxation of these fractures. Methods: In this retrospective chart review, 413 volar base fractures of the middle phalanx were included. Demographic and injury-related factors were gathered from medical records and radiographs. Using a Web-based survey, interobserver agreement was determined among 105 hand surgeons on the assessment of PIP joint subluxation of a series of 26 cases. Using the cohort of 413 fractures, a threshold for percent articular involvement and relative fracture displacement that corresponds with subluxation of the PIP joint was analyzed. Results: We found moderate to substantial agreement between hand surgeons on subluxation (κ = 0.59, P

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Oflazoglu, K., de Planque, C. A., Guitton, T. G., Rakhorst, H., & Chen, N. C. (2022). Dorsal Subluxation of the Proximal Interphalangeal Joint After Volar Base Fracture of the Middle Phalanx. Hand, 17(1), 60–67. https://doi.org/10.1177/1558944719895621

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