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Materials (Basel). 2017 Jul 5;10(7). pii: E751. doi: 10.3390/ma10070751.

Corrosion and Tribology of Materials Used in a Novel Reverse Hip Replacement.

Author information

1
Secure BioMed Evaluations, Woodstock, GA 30188, USA. lgb@securebme.com.
2
Hip Innovation Technology, Boca Raton, FL 33433, USA. GeneralInquiries@HIT-IRH.com.
3
London Health Sciences Centre, University Campus in London, London, ON N6A 5A5, Canada. steven.macdonald@LHSC.ON.CA.
4
Sidney Kimmel Medical College, Rothman Institute at Thomas Jefferson University Hospital Philadelphia, Philadelphia, PA 19107, USA. javadparvizi@gmail.com.
5
Department of Orthopaedic Surgery, Keck USC School of Medicine, Los Angeles, CA 90033, USA. jay.lieberman@med.usc.edu.
6
Department of Orthopaedic Surgery, New York University Hospital for Joint Diseases; New York, NY 10003, USA. victorfrankel6@gmail.com.
7
Department of Orthopaedic Surgery, New York University Hospital for Joint Diseases; New York, NY 10003, USA. joseph.zuckerman@nyumc.org.

Abstract

Total hip arthroplasty has been utilized for the past 50 years as an effective treatment for degenerative, inflammatory and traumatic disorders of the hip. The design of these implants has generally followed the anatomy of the hip as a ball and socket joint with the femoral head representing the ball and the acetabulum representing the socket. We describe a novel hip arthroplasty design in which the "ball" is located on the acetabular side and the "socket" is located on the femoral side. The results of extensive biomechanical testing are described and document wear and corrosion characteristics that are at least equivalent to standard designs. These results support clinical assessment as the next step of the evaluation.

KEYWORDS:

corrosion; hip arthroplasty; reverse design; wear debris

Conflict of interest statement

L.B. declares no conflict of interest. V.F., S.M., J.P., J.L. and J.Z. are members of the Scientific Advisory Board and have equity in Hip Innovation Technology, Inc. the manufacturer of the reverse hip arthroplasty system. Z.T. is a design surgeon of the implant system.

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