Easy Identification of Mechanical Axis during Total Knee Arthroplasty

PURPOSE: We devised an intraoperatively identifiable mechanical axis (IIMA) as a reference of alignment in total knee arthroplasty (TKA). MATERIALS AND METHODS: Between February 2010 and January 2011, primary TKAs were consecutively performed on 672 patients (1007 knees) using an IIMA as a reference...

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Detalles Bibliográficos
Autores principales: Seo, Jai-Gon, Moon, Young-Wan, Kim, Sang-Min, Jo, Byung-Chul, Park, Sang-Hoon
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Yonsei University College of Medicine 2013
Materias:
Original Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3809866/
https://www.ncbi.nlm.nih.gov/pubmed/24142658
http://dx.doi.org/10.3349/ymj.2013.54.6.1505
Descripción
Sumario:PURPOSE: We devised an intraoperatively identifiable mechanical axis (IIMA) as a reference of alignment in total knee arthroplasty (TKA). MATERIALS AND METHODS: Between February 2010 and January 2011, primary TKAs were consecutively performed on 672 patients (1007 knees) using an IIMA as a reference in the coronal plane. RESULTS: The alignment of the lower extremity improved from a mean of 11.4±6.7° (-10.3-34.4°) of varus preop. to 0.7±3.5° (-5.2-8.6°) immediately after surgery. Mean alignment of the femoral component in the coronal plane was 89.3±2.3° (83.4-97.2°) postop. and mean alignment of the tibial component was 90.4±2.2° (85.1-94.2°) postop. CONCLUSION: This study showed that IIMA could be of considerable value as a new guider of alignment that is easily accessible and highly effective during total knee arthroplasty.

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