Shorter survival rate in varus-aligned knees after total knee arthroplasty

Liu, Haixiao; Shang, Peng; Ying, Xiaozhou; Zhang, Yu

doi:10.1007/s00167-015-3781-7

Cited by 66 publications

(42 citation statements)

References 31 publications

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“…For this reason, varus and valgus bearing configurations were investigated in this study, as a means to provide baseline data on the influence of using different inlay thicknesses in the medial and lateral compartments. It should be noted that the concept of varus alignment is still controversial with some authors reporting high failure rates with varus alignment [35].…”

Section: Discussionmentioning

confidence: 99%

The influence of polyethylene bearing thickness on the tibiofemoral kinematics of a bicruciate retaining total knee arthroplasty

et al. 2017

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Section: Discussionmentioning

confidence: 99%

The influence of polyethylene bearing thickness on the tibiofemoral kinematics of a bicruciate retaining total knee arthroplasty

et al. 2017

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“…In most of the previous studies that have used full-length radiographs, the mHKA was considered neutral if it ranged from − 3°to 3° [2,4,8,13]. Liu et al reported in their earlier meta-analysis of 10 studies of short knee radiographs and full-length radiographs that an aFTA from 2.5°to 7.4°and mHKA from − 3°to 3°have been regarded as a neutral alignment up to the present time [5]. Park et al have also reported the discordance of alignment categorization using same criteria for a neutral aFTA and mHKA without consideration of bowing [20].…”

Section: Oh Et Al Knee Surgery and Related Researchmentioning

confidence: 99%

“…Postoperative coronal alignment is an important factor in determining the longevity of a total knee arthroplasty (TKA) procedure [1][2][3][4][5][6][7][8]. The mechanical hip-knee-ankle axis angle (mHKA) measured from full-length radiographs is the gold standard for estimating coronal alignment [9].…”

Section: Introductionmentioning

confidence: 99%

Short knee radiographs can be inadequate for estimating TKA alignment in knees with bowing

Bin

Lee

et al. 2020

Knee Surg & Relat Res

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The aim of this study was to compare the discrepancy of alignment categorization in total knee arthroplasty (TKA) between the anatomical femorotibial angle (aFTA) measured on short knee radiographs and the mechanical hipknee-ankle axis angle (mHKA) measured on full-length radiographs in knees with and without bowing. Methods: From January 2014 to June 2017, 107 of 526 osteoarthritic knees at our hospital were found to have femoral or tibial bowing. Bowing was defined as a femoral bowing angle (FBA) > 3°or < − 3°or a tibial bowing angle (TBA) > 2°o r < − 2°in full-length preoperative radiographs. Among 419 knees without bowing, we selected 107 knees as a control group using propensity-score matching. Postoperative alignments were categorized by aFTA in short knee radiographs and mHKA in full-length radiographs into neutral (2°≤ aFTA≤7°, − 3°≤ mHKA≤3°), varus (aFTA< 2°, mHKA< − 3°), and valgus (aFTA> 7°, mHKA> 3°) alignments. We compared the categorization of alignments between knees with and without bowing using the McNemar test and used logistic regression to find factors for the alignment discordance. Results: Coronal alignment was discordant in 26.2% of the knees with bowing and 13.1% of the knees without bowing (p < 0.001). FBAs were a significant factor affecting the discordance of alignment categorization (OR = 1.152, 95%CI 1.038-1.279, p = 0.008). Conclusion: Short knee radiographs are insufficient for estimating coronal alignment after TKA, particularly in knees with femoral bowing. Level of evidence: III: Retrospective comparative study.

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“…[4] Toplam 12.278 TDA'nın dahil edildiği bir meta-analiz çalışmasında da, 3°'den daha fazla varus dizilimi olan TDA olgularında nötral ve valgus dizilimli olanlara oranla daha yüksek başarısızlık oranı ortaya konmuştur. [16] TDA sonrası alt ekstremitede nötral mekanik dizilimin sağlanması, optimal komponent yerleşimi ile sağlanmalıdır. Ritter ve ark.…”

Section: Anatomik Dizilimunclassified