000			04381nam a22006497a 4500
008			181108s20192019 xxu||||| |||| 00| 0 eng d
022			_a1268-7731
024			_a10.1016/j.fas.2018.09.005 [doi]
024			_aS1268-7731(18)30420-X [pii]
040			_aOvid MEDLINE(R)
099			_a30385108
245			_aMetal artifact reduction MRI for total ankle replacement sagittal balance evaluation.
251			_aJournal of Foot & Ankle Surgery. 25(6):739-747, 2019 Dec.
252			_aJ Foot Ankle Surg. 25(6):739-747, 2019 Dec.
252			_zJ Foot Ankle Surg. 2018 Oct 05
253			_aFoot and ankle surgery : official journal of the European Society of Foot and Ankle Surgeons
260			_c2019
260			_fFY2020
265			_saheadofprint
265			_sppublish
266			_d2018-11-09
268			_aJournal of Foot & Ankle Surgery. 2018 Oct 05
269			_fFY2019
501			_aAvailable online through MWHC library: 2003 - present, Available in print through MWHC library:1999-2007
520			_aBACKGROUND: Restoration of anatomical relationship between talus and tibia is crucial for longevity of total ankle replacement (TAR). Weight-bearing (WB) radiographs are the standard for evaluating the sagittal balance alignment, but are prone to rotational misalignment and altered measurements. Metal artifact reduction sequence (MARS) MRI allows visualization of periprosthetic landmarks and alignment of the image plane to the true sagittal axis of the implant. The purpose of this study was to compare TAR sagittal balance measurements on MARS MRI and WB radiographs.
520			_aCONCLUSION: Sagittal balance measurements performed on standardized weight-bearing radiographs and standardized MARS MRI demonstrate substantial correlation and similarity. Given its high intra and interobserver agreement, MARS MRI may be helpful for the evaluation of TAR sagittal balance.
520			_aCopyright (c) 2018 European Foot and Ankle Society. Published by Elsevier Ltd. All rights reserved.
520			_aLEVEL OF EVIDENCE: Level II - Prospective Comparative Study.
520			_aMETHODS: Twenty-three subjects with TAR [10 men/13 women, age 60 (41-73) years; 13 (3-24) months post-op] underwent MARS MRI and standard lateral WB radiographs. Standardized MARS MR images were aligned to the sagittal talar component axis. Three observers performed sagittal balance alignment measurements twice in an independent, random and blinded fashion. Lateral Talar Station (LTS), tibial axis-to-talus (T-T) ratio and normalized tibial axis-to-lateral-process (T-L) distance were measured. Concordance correlation coefficients (CCC) and intraclass correlation coefficients (ICC) were used for statistical analysis. In addition, mixed effects linear models were employed to assess overall concordance of the two image types.
520			_aRESULTS: The intraobserver agreement was excellent for radiographic (CCC=0.96) and MRI (CCC=0.90-0.97) measurements. Interobserver agreements were good-to-excellent with overall slightly higher agreements for MRI (ICC=0.78-0.94) than radiography (ICC=0.78-0.90) measurements. The T-T ratios of radiographs and MRI showed a high degree of concordance, whereas LTS was significantly lower on MRI when compared with radiographs, and T-L distance showed notable disagreement between the two imaging types.
546			_aEnglish
650			_a*Ankle Joint/dg [Diagnostic Imaging]
650			_a*Arthroplasty, Replacement, Ankle
650			_a*Artifacts
650			_a*Magnetic Resonance Imaging/mt [Methods]
650			_a*Prosthesis Fitting
650			_aAdult
650			_aAged
650			_aAnatomic Landmarks
650			_aAnkle Joint/su [Surgery]
650			_aFemale
650			_aHumans
650			_aMale
650			_aMiddle Aged
650			_aProspective Studies
650			_aRadiography
651			_aMedStar Union Memorial Hospital
656			_aOrthopaedic Surgery
657			_aJournal Article
700			_aChinanuvathana, Apisan
700			_ada Fonseca, Lucas Furtado
700			_ade Cesar Netto, Cesar
700			_aSchon, Lew C
790			_aChinanuvathana A, da Fonseca LF, de Cesar Netto C, Fritz J, Schon LC, Stern SE
856			_uhttps://dx.doi.org/10.1016/j.fas.2018.09.005 _zhttps://dx.doi.org/10.1016/j.fas.2018.09.005
942			_cART _dArticle
999			_c3865 _d3865