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Avoiding Rotational Mismatch of Locking Distal Tibia Plates Depends on Proper Plate Position

Authors
 양규현 ; 이재후 
Citation
 Journal of Orthopaedic Trauma, Vol.27(7) : e147~e151, 2013 
Journal Title
 Journal of Orthopaedic Trauma 
ISSN
 0890-5339 
Issue Date
2013
Abstract
OBJECTIVES: The purpose of this study was to evaluate the most appropriate positioning of anatomical locking plates on the distal tibia. METHODS: We positioned 4 types of locking plates (3 straight and 1 bayonet) at anterior, middle, and posterior positions on the medial malleolus on both lower limbs of 15 cadavers. We measured the rotational mismatch angle between the tibia and the proximal part of the plate and calculated the plate prominence at each position. RESULTS: The average rotational mismatch angles of a combined group containing all 3 straight plates were 0.3, 16.9, and 29.4 degrees at the anterior, middle, and posterior positions, respectively (P < 0.001). In the group with 1 bayonet plate, the rotational mismatch angles were -10.5, 0, and 16.7 degrees on average, respectively (P < 0.001). The average plate prominence for each of the positions (anterior, middle, and posterior) in the group with 3 straight plates were 3.5, 6.9, and 9.4 mm, respectively (P < 0.001). The average plate prominence in the group with 1 bayonet plate were 5.4, 3.6, and 6.7 mm, respectively (P < 0.001). CONCLUSIONS: We confirmed that anterior placement of the 3 straight locking plates in the distal tibia showed the best fit with regard to rotational alignment and that middle placement of the bayonet locking plates showed best fit. Placement of distal end of the locking plates in inappropriate positions results in a greater risk of rotational mismatch and plate impingement.
URI
http://ir.ymlib.yonsei.ac.kr/handle/22282913/87311
DOI
10.1097/BOT.0b013e31827cd67d
Appears in Collections:
1. 연구논문 > 1. College of Medicine > Dept. of Orthopedic Surgery
Yonsei Authors
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Link
 http://ovidsp.ovid.com/ovidweb.cgi?T=JS&CSC=Y&NEWS=N&PAGE=fulltext&AN=00005131-201307000-00013&LSLINK=80&D=ovft
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