FEA Analysis of Neck Sparing Versus Conventional Cementless Stem
Finite element analysis is a valuable tool in prosthetic design and helps predict specific mechanical behaviors between mechanical testing and clinical observations1. We have studied the effect of tensile stresses of both conventional length stems with conventional neck resections and compared them to a novel short curved neck sparing tissue preserving stem design and have found correlation between FEA modeling and plain radiographics. Neck sparing stem with a novel conical flair does improve bio-mechanical conditions in THA as compared to conventional length cementless stems.
K.E. Tanner,A.L. Yettram, et al, “Is stem length important in uncemented endoprostheses?”; Med. Eng. Phys., 1995, Vol. 17, 291-296, June
T. McTighe, I. Woodgate, A. Turnbull, et al, “A New Approach To Neck Sparing THA Stem”; AAOS Poster 32, March 2008, San Francisco
A. Lombardi, K. Berend, V. NG, “Stubby Stems: Good Things Come in Small Packages” Orthopaedics Sept. 2011 / Vol. 34, Number 9
F. Pipino, A. Keller, “Tissue-sparing surgery: 25 years experience with femoral neck preserving hip arthroplasty”; J Orthopaed Traumatol (2006) 7:36-41 DOI 10.1007/s10195-006-0120-2
T. McTighe, C. Bryant, D. Brazil, J. Keggi, L. Keppler, “Early Learning Experience with a Neck Stabilized THA Stem for Treating Osteoarthritis”; Poster 301 / 2011 World Congress on Osteoarthritis, Sept. 15-18 San Diego, CA
P. Braud, M.A.R. Freeman, “The Effect of Retention of the Femoral Neck and of Cement Upon the Stability of a Proximal Femoral Prosthesis” The Journal of Arthroplasty Vol. 5 Supplement Oct. 1990
M.A.R. Freeman, “Why Save The Neck?” J. Bone Joint Surg 68B: 346, 1986
BOA “Advise to Patients with Metal on Metal Hips”
BOA “Metal on Metal Hip Replacement and Hip Resurfacing Arthroplasty: What does the MHRA Medical Device Alert mean?”
BOA “Medical Device Alert /All metal on metal hip replacements” MDA/2010/033 22 April 2010
K. Ong, T. McTighe “FEA of Bone Remodeling for Conventional AML® style stem versus Novel Short Curved Neck Sparing Total Hip Stem” Report on file 2007 JISRF.
R. Huiskes, H. Weiner, et al, “The relationship Between Stress Shielding and Bone Resorption Around Total Hip Stems and the Effects of Flexible Materials” Clinical Orthopaedics & Related Research, Number 274, J. 1992
C. Engh, A., Bobyn, and J.D. Glassman, “Porous coated hip replacement: The factors governing bone ingrowth, stress shielding, and clinical results” J. Bone Joint Surg, 69:45, 1987
How to Cite
Copyright (c) 2014 Declan Brazil, PhD, Timothy McTighe, Dr. H.S. (hc)
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Copyright and License Agreement:
Authors who publish with the Reconstructive Review agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work. Reconstructive Review follows the Creative Commons Attribution-NonCommercial CC BY-NC. This license allows anyone to download works, build upon the material, and share them with others for non-commercial purposes as long as they credit the senior author, Reconstructive Review, and the Joint Implant Surgery & Research Foundation (JISRF). An example credit would be: "Courtesy of (senior author's name), Reconstructive Review, JISRF, Chagrin Falls, Ohio". While works can be downloaded and shared they cannot be used commercially.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work.