Related Experiment Video
Updated: Jun 18, 2026
09:31
Individualized Stem-positioning in Calcar-guided Short-stem Total Hip Arthroplasty
Published on: February 27, 2018
Navigated cup implantation in hip arthroplasty
Johannes Beckmann1, Dirk Stengel, Markus Tingart
1Department of Orthopedic Surgery, University of Regensburg, Bad Abbach, Germany. j.beckmann@asklepios.com
Acta Orthopaedica
|November 18, 2009
Summary
Navigation-assisted total hip arthroplasty (THA) improves acetabular component positioning, reducing outliers. While effective, further research on long-term outcomes and cost-effectiveness is needed for routine use.
Area of Science:
- Orthopedic Surgery
- Surgical Navigation
- Arthroplasty
Background:
- Navigation-based implantation is suggested to enhance acetabular cup positioning in total hip arthroplasty (THA).
- Previous studies often had small sample sizes, limiting definitive conclusions.
Purpose of the Study:
- To systematically review and meta-analyze evidence on navigation-assisted THA for improved cup positioning.
- To overcome limitations of small sample sizes in individual studies.
Main Methods:
- Comprehensive search of medical and publisher databases (1976-2007).
- Independent validity assessment by 3 reviewers.
- Random-effects modeling to analyze cup angulation and risk of malpositioning.
Main Results:
- Analysis included 5 trials with 400 patients.
- No significant difference in mean cup inclination and anteversion between navigated and conventional THA.
- Navigation significantly reduced variability in cup positioning (RR=0.21) and risk of outliers.
Conclusions:
- Navigation is a reliable tool for optimizing acetabular component placement in THA.
- It effectively minimizes outliers in cup positioning.
- Long-term outcome and cost-utility analyses are required for routine adoption.
