Handling Different Designs of Femoral Stems for Automated Tha Planning: Determination of Stem Anteversion Angle Using Statistical Prediction

نویسندگان

  • Yuki Nakanishi
  • Yoshiyuki Kagiyama
  • Futoshi Yokota
  • Masaki Takao
  • Takeshi Ogawa
  • Nobuhiko Sugano
  • Yukio Tada
  • Yoshito Otake
  • Yoshinobu Sato
چکیده

AUTOMATED THA PLANNING: DETERMINATION OF STEM ANTEVERSION ANGLE USING STATISTICAL PREDICTION Yuki Nakanishi MS*, Yoshiyuki Kagiyama PhD, Futoshi Yokota PhD, Masaki Takao MD, Takeshi Ogawa MD, Nobuhiko Sugano MD, Yukio Tada PhD, Yoshito Otake PhD, Yoshinobu Sato PhD * Graduate School of System Informatics, Kobe University, Kobe, Japan 2 Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Kofu, Japan

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Use of a Digital Protractor and a Spirit Level to Determine the Intraoperative Anteversion of Femoral Component during Cemented Hip Hemiarthroplasty: a Prospective Clinical Trial

Background: Femoral stem anteversion during hip arthroplasty is generally estimated by eye intraoperatively and hasproven to be different from targeted values. This study aims to determine the accuracy of a novel technique using adigital protractor and a spirit level to improve surgeons’ estimation of stem anteversion.Methods: A prospective non-randomized study was conducted a...

متن کامل

Adjusting the combined anteversion to maximize range of motion in total hip arthroplasty: Acetabular side or femoral side, which adjustment is more effective?

INTRODUCTION: Cup and stem positioning correlates each other in total hip arthroplasty (THA), and it is believed that optimal combined anteversion (CA), which is a sum of cup and stem anteversion (AV) angle, is about 40° – 60°. However, there are few studies that have compared which adjustment is more effective, changing a cup or a femoral stem to optimizing CA and increasing ROM. In this study...

متن کامل

Comparisons of preoperative three-dimensional planning and surgical reconstruction in primary cementless total hip arthroplasty.

Reconstruction of important parameters such as femoral offset and torsion is inaccurate, when templating is based on plain x-rays. We evaluate intraoperative reproducibility of pre-operative CT-based 3D-templating in a consecutive series of 50 patients undergoing primary cementless THA through an anterior approach. Pre-operative planning was compared to a postoperative CT scan by image fusion. ...

متن کامل

Accuracy of Combined Anteversion in the Combined Anteversion Technique with Image-free Navigated Total Hip Arthroplasty

In recent literatures dealing with optimization of prosthetic alignment in total hip arthroplasty (THA), the concept of combined anteversion (CA), which is the sum of acetabular anteversion (AV) and femoral antetorsion (AT), has been addressed. Widmer attempted to determine the optimal CA using a computer simulation study . He proposed the “new safe zone” for the CA value to achieve essential r...

متن کامل

Component positions affect in vivo stability of Total Hip Arthroplasty

INTRODUCTION: Dislocation continues to be a common complication of total hip arthroplasty (THA), affecting 2% to 11% of primary cases. Many factors affect the prevalence of dislocation after THA, including soft tissue laxity, surgical approach, component position, patient factors, and component designs [1,2]. Many in vitro studies have reported the range of motion (ROM) of the hip, impingement,...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2015