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The Journal of Hip Surgery 2021; 05(04): 135-140
DOI: 10.1055/s-0041-1732367
Original Article

The Effect of Femoral Malrotation in Offset Templating for Total Hip Arthroplasty: A Cadaveric Study and Curvilinear Analysis

Harold Del Schutte Jr.
1   Charleston Institute of Advanced Orthopedics, Charleston, South Carolina
,
Sergio M. Navarro
2   Nuffield Department of Surgical Sciences, University of Oxford, Oxford, United Kingdom
,
Hashim Shaikh
3   Department of Orthopedic Surgery, University of Rochester School of Medicine and Dentistry, Rochester, New York
,
William R. Barfield
4   Department of Orthopedic Surgery, Medical University of South Carolina, Charleston, South Carolina
,
Jeffrey Conrad
4   Department of Orthopedic Surgery, Medical University of South Carolina, Charleston, South Carolina
,
Neil Romero
4   Department of Orthopedic Surgery, Medical University of South Carolina, Charleston, South Carolina
,
Tim McTighe
5   The Joint Implant Surgery and Research Foundation, Chagrin Falls, Ohio
› Author Affiliations Source of Funding No external funding was provided for this project.
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Abstract

Techniques allow assessment of preoperative offset in hip arthroplasty. This study assessed femoral rotation in preoperative offset templating using a cadaveric model. Ten femurs were imaged at degrees of rotation. Offset was measured. A generalizable equation predicting change in offset was derived with a curvilinear model. Statistically significant differences at rotational positions were found. For 30 degrees of internal rotation, 2.1 mm change in adjusted mean offset existed; for 30 degrees of external rotation, 8.4 mm change existed. Improved awareness of malrotation of the proximal femur and templating adjustments may improve total hip arthroplasty outcomes. This study reflects level of evidence III.

Keywords

femoral offset - cadaveric study - total hip arthroplasty - templating

Ethical Approval

This article does not contain any studies with human participants or animals performed by any of the authors.




Publication History

Received: 11 March 2021

Accepted: 21 June 2021

Article published online:
01 October 2021

© 2021. Thieme. All rights reserved.

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