Reach Us +441902928240
All submissions of the EM system will be redirected to Online Manuscript Submission System. Authors are requested to submit articles directly to Online Manuscript Submission System of respective journal.


Factors that Affect Version of the J-Taper Stem

Background: The appropriate combination of acetabular component and stem anteversion is needed to reduce implant impingement and dislocation of total hip arthroplasty (THA). J-Taper is a tapered wedge stem with a relatively shorter small area of arc spray coating compared with conventionally tapered wedge stems. We examined the factors that affect postoperative version of J-Taper.

Methods: A total of 59 patients who underwent primary THA were assessed by computed tomography. Preoperative femoral neck and postoperative stem anteversion, stem sagittal alignment, and stem coronal alignment were measured.

Results: Mean femoral neck anteversion was 26.1° ± 12.2°. Mean stem version was 32.3° ± 9.0°. Multiple linear regression analysis showed that femoral neck anteversion (p<0.01), stem sagittal alignment (p=0.045), and body height (p=0.048) were positively correlated with stem aversion. The stem version was significantly increased compared with that of native femoral anteversion (6.3° ± 10.9°). Multiple linear regression analysis showed that femoral neck anteversion was negatively correlated with an increased angle of stem version, body height, and stem sagittal alignment was positively correlated.

Conclusions: Our findings are helpful for surgeons during preoperative planning to achieve the appropriate combined anteversion.


Kawakami H, Setoguchi T2, Ishidou Y, Nagano S, Kakoi H, Izumi T, Nakamura S, Tominaga H and Komiya S

Abstract | Full-Text | PDF

Share this  Facebook  Twitter  LinkedIn  Google+
Flyer image

Abstracted/Indexed in

  • Index Copernicus
  • Google Scholar
  • China National Knowledge Infrastructure (CNKI)
  • Directory of Research Journal Indexing (DRJI)
  • WorldCat
  • Publons
  • Geneva Foundation for Medical Education and Research
  • Secret Search Engine Labs