Alteration of Hindfoot Alignment After Total Knee Arthroplasty Using a Novel Hindfoot Alignment View

Abstract This study examined the coronal alignment of the hindfoot in varus osteoarthritis of the knee before and after total knee arthroplasty (TKA) in 100 legs using a novel imaging method. We categorized the preoperative hindfoot alignment into varus (30 legs) and valgus (70 legs) groups; imaging...

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Bibliographic Details
Published in:The Journal of arthroplasty 2015-01, Vol.30 (1), p.126-129
Main Authors: Hara, Yusuke, MD, Ikoma, Kazuya, MD, PhD, Arai, Yuji, MD, PhD, Ohashi, Suzuyo, MD, PhD, Maki, Masahiro, MD, PhD, Kubo, Toshikazu, MD, PhD
Format: Article
Language:English
Subjects:
Aged
Aged, 80 and over
Arthroplasty, Replacement, Knee
Bone Malalignment - diagnostic imaging
Bone Malalignment - physiopathology
Bone Malalignment - surgery
coronal alignment
Female
Foot - diagnostic imaging
Foot - physiopathology
hindfoot
hindfoot view
Humans
Male
Middle Aged
Orthopedics
Osteoarthritis, Knee - physiopathology
Osteoarthritis, Knee - surgery
Radiography
TKA
X-ray
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Summary:Abstract This study examined the coronal alignment of the hindfoot in varus osteoarthritis of the knee before and after total knee arthroplasty (TKA) in 100 legs using a novel imaging method. We categorized the preoperative hindfoot alignment into varus (30 legs) and valgus (70 legs) groups; imaging of the hindfoot was conducted preoperatively and postoperatively, and the varus–valgus angle (VVA) was measured as the hindfoot alignment. The femorotibial angle improved significantly after TKA. We found that the VVA improved significantly after TKA in the hindfoot valgus group ( P < 0.001), but not in the varus group ( P = 0.554), and we speculate that the hindfoot alignment in the valgus group improved as a result of a residual compensatory capacity in the hindfoot.
ISSN:0883-5403
1532-8406
DOI:10.1016/j.arth.2014.07.026