Safe Zone for Medial Open-Wedge Supramalleolar Osteotomy of the Ankle: A Cadaveric Study
- Authors
- Nha, Kyung Wook; Lee, Soon Hyuck; Rhyu, Im Joo; Kim, Hak Jun; Song, Jae Gwang; Han, Jae Hwi; Yeo, Eui Dong; Lee, Young Koo
- Issue Date
- 1월-2016
- Publisher
- SAGE PUBLICATIONS INC
- Keywords
- supramalleolar osteotomy; lateral cortical fracture; safe zone; plane of osteotomy
- Citation
- FOOT & ANKLE INTERNATIONAL, v.37, no.1, pp.102 - 108
- Indexed
- SCIE
SCOPUS
- Journal Title
- FOOT & ANKLE INTERNATIONAL
- Volume
- 37
- Number
- 1
- Start Page
- 102
- End Page
- 108
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/89994
- DOI
- 10.1177/1071100715597438
- ISSN
- 1071-1007
- Abstract
- Background: The purpose of this present study was to determine the incidence of lateral cortical fracture depending on the plane of osteotomy in medial open-wedge supramalleolar osteotomy (SMO) and to define a safe zone through which a medial open-wedge SMO could be performed with minimal risk of lateral cortical fracture. Materials and Methods: Matched pairs of fresh-frozen human cadaver lower leg specimens were obtained from 7 males and 3 females (average age = 63.9 [range 49-75] years). In group A, a safe zone-level medial open-wedge SMO (plane of osteotomy oriented to the proximal one-third of the intrasyndesmosis) was performed, and in group B, a higher-level medial open-wedge SMO (plane of osteotomy oriented to the suprasyndesmosis) was performed. Results: In group A, 7 of the 10 limbs had no lateral cortical fracture, and 3 had lateral cortical fracture, but all of the fractured limbs were stable during the medial open-wedge SMO procedure. In group B, 2 of 10 limbs had no lateral cortical fracture and 8 had lateral cortical fracture. Three of the 8 fractured limbs were stable, but 5 were unstable during the medial open-wedge SMO procedure. The incidence of lateral cortical fracture in group B was significantly higher compared to group A (P = .04). Conclusions: According to the present findings, lateral cortical fracture was less likely to occur when open-wedge SMO was at the plane of the proximal one-third of the intrasyndesmosis, the so-called safe zone, than at the plane of the suprasyndesmosis. Clinical Relevance: A safe zone for medial open-wedge SMO to prevent lateral cortical fracture during the medial open-wedge SMO procedure was identified.
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Collections - College of Medicine > Department of Medical Science > 1. Journal Articles
- Graduate School > Department of Biomedical Sciences > 1. Journal Articles
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