A novel device for greater precision and safety in open-wedge high tibial osteotomy: cadaveric study

• Autor(a) principal: Ribeiro, Cristiano Hossri
• Data de Publicação: 2020
• Outros Autores: Mod, Mauricio Sante Bettio, Isch, Daniel, Baier, Clemens, Maderbacher, Guenther, Severino, Nilson Roberto, Cataneo, Daniele Cristina [UNESP]
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.1007/s00402-019-03300-w; http://hdl.handle.net/11449/201086
• topic: Computer-assisted surgery; Genu varum; High-tibial-osteotomy; Knee osteoarthritis; Surgical technique

Introduction: The complications of the open-wedge osteotomy technique (slope, hypo- and hypercorrection and fractures) are related to difficulties in the control of the open-wedge angle during surgery. Materials and methods: In this cadaveric study, we evaluated the safety and precision of a novel system, the Realignment High Control System (RHC), in the correction of knee mechanical axis and slope. The RHC has a fixation plate coupled to a dynamic device that opens the osteotomy continuously, allowing plate fixation before osteotomy wedge opening. Results: All procedures were easily performed, with no fractures. The openings equaled the indicated by the navigation system for 7.5° and 10°, and for 5°, there was a statistically, although not clinically significant, difference of 0.6°. The slope shown by the RHC setting and in the navigation system was significantly different for the 10° setting only, with a mean difference of 0.563°. Conclusions: RHC facilitates the surgical technique of high tibial osteotomy, with gradual wedge opening, precise correction of the mechanical axis, and appropriate control of the tibial slope, even with larger openings.