A proposed new rotating reference axis for the tibial component after proximal tibial resection in total knee arthroplasty

Takaaki Ohmori, Tamon Kabata, Yoshitomo Kajino, Daisuke Inoue, Tadashi Taga, Takashi Yamamoto, Tomoharu Takagi, Junya Yoshitani, Takuro Ueno, Ken Ueoka and Hiroyuki Tsuchiya

PLOS ONE, 2018, vol. 13, issue 12, 1-12

Abstract: Purpose: During total knee arthroplasty, few rotating reference axes can be reliably used after tibial resection. We speculated that a line that passes through the lateral edge of the posterior cruciate ligament (PCL) at its tibial attachment after resection and the most prominent point of the tibial tubercle [after-tibial resection (ATR) line] will provide a good reference axis. In this study, we aimed to evaluate the association between ATR and Akagi’s lines. Materials and methods: In this case–control simulation study, we retrospectively evaluated 38 patients with varus knee and 28 patients with valgus knee. We defined the reference cutting plane as 10 mm distal from the lateral articular surface of the tibia in varus group and as 7 mm distal from the medial articular surface in the valgus group. We measured angles between Akagi’s line and the ATR line (ATR line angle) as well as between Akagi’s line and 1/3 Akagi’s line (1/3 Akagi’s line angle), which passes through the midpoint of PCL and the medial third of the patellar tendon. We used paired t-tests to determine the significance of differences between these angles, with p

Date: 2018
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0209317

DOI: 10.1371/journal.pone.0209317

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