English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Acetabular cup malposition is recognized as a risk factor for dislocation and increased wear after total hip arthroplasty (THA) (1). However, it was difficult to achieve target cup positioning even by experienced surgeons (1). Especially, developmental hip dysplasia (DDH) presents a considerable difficult for precise cup placement in THA. Several papers demonstrated the accuracy of cup placement of DDH patients by using computed tomography (CT)-based navigation (2), but no report was found by using robotic-assisted THA. Recently, new generation of robotic-assisted total hip arthroplasty (THA) was introduced and precise cup positioning was achieved during THA (3) We hypothesize robotic-assisted THA can achieve precise cup positioning. The aim of this study is to figure out the accuracy of cup placement of severe DDH cases by using robotic-assisted THA Methods This was a prospective cohort study. The study analyzed a consecutive series of 53 hips with roboticassisted THA between Aug 2018 and Sep 2019. Fifteen patients were DDH cases, and classified Crowe type II7 patients, type III7 patients, and type IV1 patient. The mean age of the subjects was 63.2 years and the average body mass index (BMI) was 24.1±5.4 kg/m. All patients underwent robotic assisted-THA (MAKO Rio Robot, Ft. Lauderdale, FL) for osteoarthritis via the Hardinge or posterior approach in the lateral position. The patients underwent THA using Trident hemispherical cup and Accolade II or Exeter v40 stems (Stryker, Kalamazoo, MI). Postoperatively, computer-aided design models of the implants were manually adjusted for postoperative multi-planar reconstruction of CT images using 3D template software (ZedHip, Lexi, Japan). Cup inclination and anteversion angles were measured with respect to the functional pelvic plane. To analyze the accuracy of intraoperative navigation records for cup inclination and anteversion, we compared the intraoperative cup angles using the navigation records with the postoperative angles using postoperative CT data. Health

Robotic-Assisted THA Can Achieve Precise Cup Positioning Even in Severe Developmental Dysplasia of Hip