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Getting it Right by Analyzing Failures and Biomechanical Models   |    
Have Contemporary Hip Resurfacing Designs Reached Maturity? A Review
Kevin L. Ong, PhD1; Michael T. Manley, PhD2; Steven M. Kurtz, PhD1
1 Exponent Incorporated, 3401 Market Street, Suite 300, Philadelphia, PA 19104. E-mail address for K.L. Ong: kong@exponent.com
2 Homer Stryker Center for Orthopaedic Education and Research, 325 Corporate Drive, Mahwah, NJ 07430
View Disclosures and Other Information
Disclosure: In support of their research for or preparation of this work, one or more of the authors received, in any one year, outside funding or grants in excess of $10,000 from Stryker Orthopaedics. Neither they nor a member of their immediate families received payments or other benefits or a commitment or agreement to provide such benefits from a commercial entity. No commercial entity paid or directed, or agreed to pay or direct, any benefits to any research fund, foundation, division, center, clinical practice, or other charitable or nonprofit organization with which the authors, or a member of their immediate families, are affiliated or associated.

The Journal of Bone and Joint Surgery, Inc.
J Bone Joint Surg Am, 2008 Aug 01;90(Supplement 3):81-88. doi: 10.2106/JBJS.H.00574
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Abstract

Background: The increasing prevalence of hip replacements in young patients is expected to fuel the demand for hip resurfacing arthroplasty. Patient selection, surgical technique, and implant design can influence the clinical outcomes for these patients. In this review, we discuss whether contemporary hip resurfacing designs have reached maturity and suggest design considerations for future-generation implants. These design-related factors include the amount and extent of cement fixation, adoption of cementless femoral fixation, optimization of implant position, minimization of stress-shielding, improvement in modularity or sizing and geometry options, metallurgy, development of alternative bearing options, and examination of in vivo cup deformation. In addition, this review is based on an understanding of the causes of failure of revision hip resurfacing arthroplasty, which is essential to help guide research, implant design, and clinical decision-making.

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    These activities have been planned and implemented in accordance with the Essential Areas and policies of the Accreditation Council for Continuing Medical Education (ACCME) through the joint sponsorship of the American Academy of Orthopaedic Surgeons and The Journal of Bone and Joint Surgery, Inc. The American Academy of Orthopaedic Surgeons is accredited by the ACCME to provide continuing medical education for physicians.
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