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Does Conventional Lateral Long Bone Radiography Present Sagittal Axes Accurately? A Comparison with Direct Lateral Long Bone Radiography

Authors
 Hyuck Min Kwon  ;  Hee June Kim  ;  Young Han Lee  ;  Eshnazarov Eshnazarovich  ;  Gil Han Lee  ;  Jin Woo Lee  ;  Ick Hwan Yang  ;  Kwan Kyu Park 
Citation
 JOURNAL OF KNEE SURGERY, Vol.30(3) : 252-257, 2017 
Journal Title
 JOURNAL OF KNEE SURGERY 
ISSN
 1538-8506 
Issue Date
2017
MeSH
Aged ; Arthroplasty, Replacement, Knee* ; Body Mass Index ; Female ; Femur/diagnostic imaging* ; Hip Joint/diagnostic imaging* ; Humans ; Knee Joint/diagnostic imaging* ; Male ; Middle Aged ; Patient Positioning* ; Radiography ; Range of Motion, Articular ; Tibia/diagnostic imaging*
Keywords
total knee arthroplasty ; lateral long bone radiography ; direct method ; sagittal axes ; implant position
Abstract
To investigate the sagittal alignment, proper and consistent radiographic evaluation is needed. We sought to use an alternative method of obtaining the same view, a direct lateral view and compare it with the conventional method. Conventional lateral long bone radiography and direct lateral long bone radiography were undertaken by 74 consecutive patients undergoing total knee arthroplasty (TKA), preoperatively and postoperatively. Angles between sagittal axes and the mechanical axis (MA), and the visible hip joint area were measured. Postoperative angles between the MA and femoral implant were also significantly different between the two radiologic methods of conventional and direct lateral long bone radiography (92.1 ± 2.1 degrees vs. 94.4 ± 2.6 degrees, p = 0.034). Hip joint visibility was significantly inferior using the direct lateral method (p < 0.001). The angles on the sagittal axes on conventional radiography of the lower extremities were different from those on direct lateral long bone radiography. The direct lateral long bone radiographs show the true lateral view, and surgeons may consider using the direct lateral method when evaluating relevant alignments before and after TKAs. For obese patients, however, conventional or combined methods should be considered because of inferior visibility of the hip joint using the direct method.
Full Text
https://www.thieme-connect.com/DOI/DOI?10.1055/s-0036-1584537
DOI
10.1055/s-0036-1584537
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Orthopedic Surgery (정형외과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
Yonsei Authors
Kwon, Hyuck Min(권혁민) ORCID logo https://orcid.org/0000-0002-2924-280X
Kim, Hee June(김희준)
Park, Kwan Kyu(박관규) ORCID logo https://orcid.org/0000-0003-0514-3257
Yang, Ick Hwan(양익환)
Lee, Gil Han(이길한)
Lee, Young Han(이영한) ORCID logo https://orcid.org/0000-0002-5602-391X
Lee, Jin Woo(이진우) ORCID logo https://orcid.org/0000-0002-0293-9017
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/154452
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