Zirconia Phase Transformation, Metal Transfer, and Surface Roughness in Retrieved Ceramic Composite Femoral Heads in Total Hip Arthroplasty

2014 ◽  
Vol 29 (11) ◽  
pp. 2219-2223 ◽  
Author(s):  
Marcella Elpers ◽  
Denis Nam ◽  
Susie Boydston-White ◽  
Michael P. Ast ◽  
Timothy M. Wright ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Phase Transformation ◽  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Ceramic Composite ◽  
Metal Transfer ◽  
Total Hip ◽  
Femoral Heads ◽  
Zirconia Phase

Femoral head material loss at the head-neck junction in total hip arthroplasty: the effect of head size, stem material and stem offset

2018 ◽  
Vol 29 (6) ◽  
pp. 647-651 ◽  
Author(s):  
Giuseppe Valente ◽  
Brent Lanting ◽  
Steven MacDonald ◽  
Matthew G Teeter ◽  
Douglas Van Citters ◽  
...  
Keyword(s):  
Femoral Head ◽  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Head Size ◽  
Material Loss ◽  
Total Hip ◽  
Femoral Heads ◽  
Measuring Machine ◽  
Head Neck ◽  
Neck Junction

Introduction:Material loss at the head-neck junction in total hip arthroplasty may cause adverse clinical symptoms and implant failure. The purpose of this study was to quantitatively examine the effects of head size, stem material and stem offset on material loss of the head-neck taper interface of a single trunnion design in retrieval implants of metal on polyethylene bearing surfaces.Methods:A retrieval study was performed to identify all 28-mm and 32-mm femoral heads from a single implant/taper design implanted for >2 years. This included n = 56 of the 28-mm heads and n = 23 of the 32-mm heads. The 28-mm femoral heads were matched to 32-mm femoral heads based on time in vivo and head length. A coordinate measuring machine was used to determine maximum linear corrosion depth (MLD). Differences in MLD for head diameter, stem material, and stem offset were determined.Results:There were no differences between groups for age, gender, BMI, or implantation time. There was no difference in MLD between 28 mm and 32 mm matched paired head diameters ( p = 0.59). There was also no difference in MLD between titanium or cobalt-chromium stems ( p = 0.79), and regular or high-offset stems ( p = 0.95).Conclusion:There is no statistical difference in femoral head MLD at the head-neck junction in THA between 28-mm and 32-mm matched paired femoral heads, similar or mixed alloy coupled femoral head stem constructs, and regular or high offset stems.

Reduction in Early Dislocation Rate With Large-Diameter Femoral Heads in Primary Total Hip Arthroplasty

2007 ◽  
Vol 22 (6) ◽  
pp. 140-144 ◽  
Author(s):  
Christopher L. Peters ◽  
Edward McPherson ◽  
Jeffrey D. Jackson ◽  
Jill A. Erickson
Keyword(s):  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Large Diameter ◽  
Dislocation Rate ◽  
Total Hip ◽  
Femoral Heads ◽  
Primary Total Hip Arthroplasty

Conversion of Hip Hemiarthroplasty to Total Hip Arthroplasty Utilizing a Dual-Mobility Construct Compared With Large Femoral Heads

2017 ◽  
Vol 32 (10) ◽  
pp. 3071-3075 ◽  
Author(s):  
Brian P. Chalmers ◽  
Kevin I. Perry ◽  
Arlen D. Hanssen ◽  
Mark W. Pagnano ◽  
Matthew P. Abdel
Keyword(s):  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Dual Mobility ◽  
Hip Hemiarthroplasty ◽  
Total Hip ◽  
Femoral Heads ◽  
Large Femoral Heads

Zirconia versus Co-Cr Femoral Heads in Total Hip Arthroplasty

2006 ◽  
Vol 453 ◽  
pp. 86-90 ◽  
Author(s):  
Matthew J Kraay ◽  
Rebecca D Thomas ◽  
Clare M Rimnac ◽  
Steven J Fitzgerald ◽  
Victor M Goldberg
Keyword(s):  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Total Hip ◽  
Femoral Heads

Stand up! Are normal weight-bearing forces sufficient for a 12/14 Morse taper locking in total hip arthroplasty?

2020 ◽  
pp. 112070002096700
Author(s):  
Suleman Qurashi ◽  
Matthew H Pelletier ◽  
Tian Wang ◽  
Nicholas Bramich ◽  
Jason Chinnappa ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Weight Bearing ◽  
Normal Weight ◽  
Total Hip ◽  
Ceramic Femoral Head ◽  
Head Surface ◽  
Cyclical Loading

Background: The aim of this study was to investigate total hip arthroplasty (THA) Morse taper pull-off strengths after impaction prior to cyclical loading compared to cyclical loading alone. The practical relevance of the experiment is to provide a perspective on what may be clinically satisfactory taper assembly given the spectrum of head tapping patterns used by surgeons, as well as compare traditional impaction performed in standard THA with alternate methods of taper engagement such as ‘ in situ assembly’ used in micro-invasive techniques. Methods: 36 taper constructs utilising a combination of cobalt-chrome alloy and ceramic-titanium alloy junctions were investigated in vitro in wet and dry conditions with cyclical loading of the constructs. Taper disengagement strengths with and without impaction were compared. Secondary investigation of the surface roughness of the heads and tapers was also assessed. Results: An impaction to a wet taper resulted in a greater pull off force compared to a dry taper with a CoCr head and taper combination. Impacting the head and dryness of the taper did not affect pull off forces of a ceramic femoral head on titanium taper. Pulling a head off a taper significantly alters the head surface roughness. Conclusion: Impaction of a taper does not provide any benefit over cyclical loading of a taper assembly alone for pull-off strength.

Large Femoral Heads Can Help Reduce Risk of Dislocation in Total Hip Arthroplasty

2008 ◽  
Vol 23 (2) ◽  
pp. 318 ◽  
Author(s):  
James Dowd ◽  
Kirk Kindsfater ◽  
William Barrett ◽  
Carleton Southworth* ◽  
David Dalury
Keyword(s):  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Total Hip ◽  
Femoral Heads ◽  
Reduce Risk ◽  
Large Femoral Heads
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