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Related Experiment Video

Updated: Dec 9, 2025

Individualized Stem-positioning in Calcar-guided Short-stem Total Hip Arthroplasty
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Centralizing the Cemented Exeter Femoral Stem Using the Direct Lateral Approach: Surgical Tips and Radiological

Sriram Srinivasan1, Rohi Shah1, Faizal Rayan1

  • 1Trauma and Orthopaedics Department, Kettering General Hospital, Kettering, NN16 8UZ, UK.

Arthroplasty Today
|September 14, 2020
PubMed
Summary
This summary is machine-generated.

Varus malalignment in total hip arthroplasty can lead to complications. This study presents a technique to ensure proper femoral stem alignment, avoiding varus positioning and improving long-term outcomes.

Keywords:
MalalignmentRadiographic evaluationTaper-slip cemented femoral stemTechnical tipsTotal hip arthroplastyVarus implantation

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Area of Science:

  • Orthopedic Surgery
  • Biomedical Engineering
  • Radiology

Background:

  • Varus alignment of femoral stems in total hip arthroplasty (THA) is linked to adverse outcomes.
  • Complications include abnormal load distribution, osteolysis, loosening, and periprosthetic fractures.

Purpose of the Study:

  • To describe a surgical technique for achieving consistent femoral stem positioning in THA.
  • To prevent varus alignment of the femoral component.

Main Methods:

  • A case series of 224 patients undergoing cemented Exeter THA via a direct lateral approach.
  • Postoperative radiographic assessment of femoral stem alignment.
  • Detailed description of four reproducible technical tips to ensure neutral or valgus stem alignment.

Main Results:

  • No patient in the series exhibited a varus-aligned femoral stem (≤-5° coronal alignment).
  • The described technique facilitated consistent, non-varus stem placement.

Conclusions:

  • The presented surgical technique effectively prevents varus alignment in cemented Exeter THA.
  • Consistent femoral stem positioning is achievable with reproducible technical steps, potentially improving long-term THA outcomes.