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Critical Reviews™ in Biomedical Engineering
SJR: 0.243 SNIP: 0.376 CiteScore™: 0.79

ISSN Печать: 0278-940X
ISSN Онлайн: 1943-619X

Выпуски:
Том 47, 2019 Том 46, 2018 Том 45, 2017 Том 44, 2016 Том 43, 2015 Том 42, 2014 Том 41, 2013 Том 40, 2012 Том 39, 2011 Том 38, 2010 Том 37, 2009 Том 36, 2008 Том 35, 2007 Том 34, 2006 Том 33, 2005 Том 32, 2004 Том 31, 2003 Том 30, 2002 Том 29, 2001 Том 28, 2000 Том 27, 1999 Том 26, 1998 Том 25, 1997 Том 24, 1996 Том 23, 1995

Critical Reviews™ in Biomedical Engineering

DOI: 10.1615/CritRevBiomedEng.v28.i12.60
pages 23-32

The Biomechanical and Surgical Solutions for Patella Implant in Total Knee Arthroplasty

David G. Mendes
The Center for Implant Surgery, Bnai Zion Medical Center, Haifa, Israel
Mazen Said
The Center for Implant Surgery, Bnai Zion Medical Center, Haifa, Israel
Sorin Head
The Center for Implant Surgery, Bnai Zion Medical Center, Haifa, Israel
Edmond Sabo
The Center for Implant Surgery, Bnai Zion Medical Center, Haifa, Israel
Ricardo Nachman
The Center for Implant Surgery, Bnai Zion Medical Center, Haifa, Israel
Jochanan H. Boss
The Center for Implant Surgery, Bnai Zion Medical Center, Haifa, Israel

Краткое описание

A basic fault in designs of patella implants that calls for a prompt remedy is the inadequate polyethylene thickness in contact areas. The requirement for thickness of patella implants should be similar to the requirement set up by the FDA in 1993 regarding the tibial implants, that is, a minimal thickness of 8 mm.
A solution is presented for the optimal design of the patella implant and for the appropriate surgical technique.
The implant's undersurface that fixes to bone is concave and has a 1-cm wide but 5 to 6 mm short central peg that does not risk the integrity of the bone. Fixation of the concave aspect to the convex aspect of the bony patella strongly enhances resistance to medio-lateral and supero-inferior shear forces.
The circumferential facet of the implant 8 mm thick assures uniform thickness of the entire implant and assures optimal mechanical properties of the polyethylene.
The articulating surface is tailored to conform to the corresponding femoral trochlear groove and condyles. It can be made to fit any femoral component of any knee implant.


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