An increase in the medial proximal tibial angle of 95° or greater after opening wedge high tibial osteotomy does not necessarily lead to excessive knee joint line obliquity of 5° or greater

SICOT-J 2026 Open access

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Authors: Yuta Hizume, Ken Kumagai, Tomotaka Akamatsu, Shuntaro Nejima, Yusuke Inoue, Hyonmin Choe, Hiroyuki Ike, Naomi Kobayashi, Yutaka Inaba
DOI: 10.1051/sicotj/2026028
Cited by: 1
References: 20

Abstract

INTRODUCTION: The relationship between medial proximal tibial angle (MPTA) overcorrection and knee joint line obliquity (KJLO) after opening wedge high tibial osteotomy (OWHTO) remains controversial. Though excessive valgus correction (MPTA ≥ 95°) has been associated with abnormal joint line inclination, the extent to which this affects postoperative alignment and whether overcorrection necessarily results in excessive KJLO (≥5°), which has been associated with increased shear stress on the articular cartilage, is unclear. METHODS: A total of 300 knees undergoing isolated OWHTO were retrospectively reviewed. Postoperative KJLO and MPTA were measured using full-length standing radiographs. Knees were stratified into MPTA

Fields of Study & Subjects

Total Knee Arthroplasty Outcomes Osteoarthritis Treatment and Mechanisms Knee injuries and reconstruction techniques

Publication details

Journal / source
SICOT-J
Publisher
EDP Sciences
Volume
12
Pages
29–29
Publication date
1 January 2026
Language
EN