scholarly journals The Effect of Sagittal Plane Inclination on Posterior Tibial Slope in Medial Open Wedge HTO – Experimental Study With a Square Column Model-

2020 ◽  
Author(s):  
Sang Won Moon ◽  
Ji Young Ryu ◽  
Sung Jae Lee ◽  
Sang Won Woo ◽  
Sin Hyung Park ◽  
...  
Keyword(s):  
Sagittal Plane ◽  
Testing Machine ◽  
Tibial Slope ◽  
Posterior Tibial Slope ◽  
Tibial Osteotomy ◽  
3D Printer ◽  
Open Wedge ◽  
Posterior Slope ◽  
Column Model ◽  
Posterior Tibial

Abstract Background: Medial open-wedge high tibial osteotomy (MOWHTO) is an effective and safe treatment method in medial osteoarthritis of knee. However, it may accompany unintended change of posterior tibial slope (PTS). Several factors are known to cause PTS change after MOWHTO. However, there is a lack of research on the sagittal plane osteotomy inclination (SPOI). The purpose of this study was to evaluate that SPOI affected the change in PTS. The hypothesis was that parallel SPOI causes no PTS change after MOWHTO. Methods:A square column model with a 10° posterior slope was produced by two 3D programs and a 3D printer. A series of MOWHTO was performed on a square column model through virtual simulation using two 3D programs and an actual simulation using a 3D printer, a testing machine and a measurement system. The SPOI was divided into 4 types: ① parallel SPOI plus 10° (SPOI: 20°), ② parallel SPOI (SPOI: 10°), ③ perpendicular SPOI (SPOI: 0°), and ④ perpendicular SPOI minus 10° (SPOI: -10°). The correction angle was increased by 5° from 0° to 30°. The change of the posterior slope was measured in sagittal plane.Results: The posterior slope was increased in the parallel SPOI plus 10° (SPOI: 20°). It was maintained in the parallel SPOI (SPOI: 10°) and decreased in the perpendicular SPOI (SPOI: 0°) and perpendicular SPOI minus 10° (SPOI: -10°).Conclusion: SPOI affected the change in PTS. Parallel SPOI causes no PTS change after MOWHTO.

scholarly journals The effect of the sagittal plane osteotomy inclination on the posterior tibial slope in medial open wedge HTO: experimental study with a square column model

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Sang Won Moon ◽  
Ji Young Ryu ◽  
Sung-Jae Lee ◽  
Sang Won Woo ◽  
Sin Hyung Park ◽  
...  
Keyword(s):  
Sagittal Plane ◽  
Tibial Slope ◽  
Posterior Tibial Slope ◽  
3D Printer ◽  
Open Wedge ◽  
Correction Angle ◽  
Posterior Slope ◽  
Column Model ◽  
Posterior Tibial ◽  
Open Wedge Hto

Abstract Background Medial open-wedge high tibial osteotomy (HTO) is an effective and safe treatment method for medial osteoarthritis of the knee. However, unintended changes in the posterior tibial slope (PTS) may occur. Several factors cause PTS alterations after medial open-wedge HTO; however, research on sagittal-plane osteotomy inclination (SPOI) in relation to the PTS is sparse. The purpose of this study was to evaluate whether the SPOI affects changes in the PTS after medial open-wedge HTO. The hypothesis was that an SPOI parallel to the PTS causes no change in the PTS after medial open-wedge HTO. Methods A square column model with a 10° posterior slope was produced using two three-dimensional (3D) programs and a 3D printer. Then, a series of medial open-wedge HTO procedures was performed on the square column model through virtual simulation using the two 3D programs, and an actual simulation was conducted using a 3D printer, a testing machine and a measurement system. The SPOI was divided into four types: ① SPOI 20° (posterior-inclined 10° osteotomy), ② SPOI 10° (osteotomy parallel to posterior slope), ③ SPOI 0° (anterior-inclined 10° osteotomy), and ④ SPOI − 10° (anterior-inclined 20° osteotomy). The correction angle was increased at intervals of 5° from 0° to 30°. The change in posterior slope was measured in the sagittal plane. Results The posterior slope was increased in SPOI 20° (posterior-inclined 10° osteotomy), maintained in SPOI 10° (osteotomy parallel to posterior slope), and decreased in SPOI 0° (anterior-inclined 10° osteotomy) and SPOI − 10° (anterior-inclined 20° osteotomy) based on the correction angle. Conclusions In this study using a square column model, the SPOI affected the change in the PTS, and an SPOI parallel to the PTS caused no change in the PTS after medial open-wedge HTO.

scholarly journals Correction to: The effect of the sagittal plane osteotomy inclination on the posterior tibial slope in medial open wedge HTO: experimental study with a square column model

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Sang Won Moon ◽  
Ji Young Ryu ◽  
Sung-Jae Lee ◽  
Sang Won Woo ◽  
Sin Hyung Park ◽  
...  
Keyword(s):  
Experimental Study ◽  
Sagittal Plane ◽  
Tibial Slope ◽  
Posterior Tibial Slope ◽  
Open Wedge ◽  
Column Model ◽  
Posterior Tibial ◽  
Open Wedge Hto

An amendment to this paper has been published and can be accessed via the original article.

Control of Posterior Tibial Slope and Patellar Height in Open-Wedge Valgus High Tibial Osteotomy

2011 ◽  
Vol 39 (4) ◽  
pp. 851-856 ◽  
Author(s):  
Stefan Hinterwimmer ◽  
Knut Beitzel ◽  
Jochen Paul ◽  
Chlodwig Kirchhoff ◽  
Martin Sauerschnig ◽  
...  
Keyword(s):  
High Tibial Osteotomy ◽  
Tibial Slope ◽  
Patellar Height ◽  
Posterior Tibial Slope ◽  
Tibial Osteotomy ◽  
Open Wedge ◽  
Posterior Tibial

The effects of different hinge positions on posterior tibial slope in medial open-wedge high tibial osteotomy

2017 ◽  
Vol 26 (6) ◽  
pp. 1851-1858 ◽  
Author(s):  
Ho-Seung Jo ◽  
Jin-Sung Park ◽  
June-Ho Byun ◽  
Young-Bok Lee ◽  
Young-Lac Choi ◽  
...  
Keyword(s):  
High Tibial Osteotomy ◽  
Tibial Slope ◽  
Posterior Tibial Slope ◽  
Tibial Osteotomy ◽  
Open Wedge ◽  
Posterior Tibial ◽  
Wedge High Tibial Osteotomy

scholarly journals Is it possible to avoid posterior tibial slope increase in open-wedge high tibial osteotomy?

2017 ◽  
Vol 5 (2_suppl2) ◽  
pp. 2325967117S0005
Author(s):  
Hüseyin Kaya ◽  
Elcil Kayabiçer ◽  
Ali Engin Daştan ◽  
Emin Taşkıran
Keyword(s):  
High Tibial Osteotomy ◽  
Tibial Slope ◽  
Statistical Analyses ◽  
Posterior Tibial Slope ◽  
Tibial Osteotomy ◽  
X Rays ◽  
Open Wedge ◽  
P Values ◽  
Posterior Tibial ◽  
Wedge High Tibial Osteotomy

Aim: Posterior tibial slope has shown to be increased with open-wedge high tibial osteotomy (OWHTO) which may lead to an increase in loading of the anterior cruciate ligament and causing patellofemoral problems in return. In this case series, patients with an OWHTO performed posteromedial to the medial collateral ligament (MCL), keeping it intact was investigated. The aim of this study was to evaluate the influence of this technique on the posterior tibial slope. Methods: Thirty knees (15 right, 15 left) of 28 patients (22 women, 6 men) with a mean age of 53.57±5.9 years who had an OWHTO between January 2014 and February 2016 were included in this study. Surgical technique: A proximal tibial osteotomy is performed posteromedial to MCL keeping it intact. Following the osteotomy, distraction is also performed from the posteromedial aspect of tibia. Fixation is achieved utilizing TomoFix plate. Radiological evaluation: Preoperative and postoperative mechanical axes (MA) were measured on standard weight bearing long axis x-rays. Preoperative and postoperative posterior tibial slope angles were measured on lateral x-rays using three different Methods: the angles between medial tibial plateau and (1) posterior tibial cortex, (2) tibial proximal anatomical axis, and (3) posterior fibular cortex were measured. The correlations of three different measurement methods were analyzed. Patients were grouped according to preoperative MA deviations and postoperative MA changes (either <10º or >=10º). The posterior tibial slope changes were compared between groups. Statistical analyses: All statistical analyses were performed utilizing SPSS 18.0. Results: Mean preoperative and postoperative MA deviations were 9.81°±4.94° and -2.72°± 2.69° respectively. The mean correction angle of MA of lower extremity was 12.62°±4.58°. The three methods used to measure the posterior tibial slope angles were found to be highly correlated with each other ((1) and (2) r=0.961; (1) and (3) 0.906; (2) and (3) 0.934; p values <0.0001). Preoperative mean posterior tibial slope angles were 9.50º±4.47°, 11.51º± 4.50°, and 10.80º±4.58°; postoperative angles were 6.10º±4.23°, 8.78º±4.57° and 8.11º±4.55°, respectively. Posterior tibial slope angle was significantly decreased postoperatively with respect to all three methods (p <0.0001). The changes in the posterior tibial slope was not statistically significant between the groups with preoperative <10º and >=10º deformities (p values 0.861, 0.723, 0.727, respectively). Conclusions: Posterior tibial slope was found to be decreased with this posteromedial OWHTO technique. This technique offered the advantage of preserving the posterior tibial slopes postoperatively even in highly deformed knees which necessitated higher degrees of corrections in the mechanical axes.

Sign in / Sign up

Export Citation Format

Share Document