Investigation into the effect of a sandwich acetabular cup upon lubricant film thickness in metal-on-metal total hip replacements

2006 ◽  
Vol 220 (3) ◽  
pp. 151-158 ◽  
Author(s):  
F Liu ◽  
Z. M. Jin ◽  
D Dowson
Keyword(s):  
Film Thickness ◽  
Lubricant Film ◽  
Lubricant Film Thickness ◽  
Acetabular Cup ◽  
Total Hip ◽  
Total Hip Replacements ◽  
Metal On Metal ◽  
Hip Replacements

SURVIVORSHIP AND RETRIEVAL ANALYSIS OF SIKOMET METAL-ON-METAL TOTAL HIP REPLACEMENTS AT A MEAN OF SEVEN YEARS

2006 ◽  
Vol 88 (6) ◽  
pp. 1173-1182 ◽  
Author(s):  
INGRID MILOŠEV ◽  
RIHARD TREBŠE ◽  
SIMON KOVAČ ◽  
ANDREJ CÖR ◽  
VENČESLAV PIŠOT
Keyword(s):  
Total Hip ◽  
Retrieval Analysis ◽  
Total Hip Replacements ◽  
Metal On Metal ◽  
Hip Replacements

Failure of an Uncemented Press-Fit Acetabular Cup in Primary Total Hip Arthroplasty

2002 ◽  
Vol 12 (4) ◽  
pp. 371-377 ◽  
Author(s):  
N. Rama Mohan ◽  
P. Grigoris ◽  
D.L. Hamblen
Keyword(s):  
Femoral Stem ◽  
Acetabular Cup ◽  
Total Hip ◽  
Press Fit ◽  
Total Hip Replacements ◽  
Locking Mechanism ◽  
Hip Replacements ◽  
The Mean ◽  
Open Position ◽  
Primary Total Hip Arthroplasty

We reviewed fifteen primary total hip replacements performed using the uncemented, non-porous coated press-fit AcSys Shearer Cup. A modular titanium straight femoral stem with a 32mm head was used in all cases. The mean age of the group containing five males and 10 females was 66 years. Eight cups have been revised for aseptic loosening at a mean of seven years and the remaining four cups are radiologically loose. At revision surgery none of the cups showed any evidence of bony ingrowth. Our 10-year results with this cup indicate an unacceptably high failure rate of 80%. Absence of bony ingrowth and the lack of a secure locking mechanism between the polyethylene liner and the metal shell are the most important causes of failure. The use of a 32mm diameter head and implantation of the cup in an open position contributed to this failure. Even though this cup is no longer manufactured, our experience suggests that all non-porous coated cups should be closely followed up.

scholarly journals Granulation Tissue in Metal on Metal Total Hip Replacements: A Pathological Study.

1998 ◽  
Vol 47 (1) ◽  
pp. 151-154
Author(s):  
Koji Hiraoka ◽  
Fujio Higuchi ◽  
Rikimaru Kawabata ◽  
Akio Inoue
Keyword(s):  
Granulation Tissue ◽  
Pathological Study ◽  
Total Hip ◽  
Total Hip Replacements ◽  
Metal On Metal ◽  
Hip Replacements

Quantification of self-polishing in vivo from explanted metal-on-metal total hip replacements

2011 ◽  
Vol 44 (5) ◽  
pp. 513-516 ◽  
Author(s):  
Thomas J. Joyce ◽  
Harry Grigg ◽  
David J. Langton ◽  
Antoni V.F. Nargol
Keyword(s):  
Total Hip ◽  
Total Hip Replacements ◽  
Metal On Metal ◽  
Hip Replacements

An Experimental Study of Metallic Transfer on Ceramic Femoral Heads

2009 ◽  
Author(s):  
Douglas M. Doud ◽  
Preston R. Beck ◽  
Donald R. Petersen ◽  
Jack E. Lemons ◽  
Alan W. Eberhardt
Keyword(s):  
Experimental Study ◽  
Femoral Head ◽  
Life Expectancy ◽  
Metal Transfer ◽  
Acetabular Cup ◽  
Total Hip ◽  
Total Hip Replacements ◽  
Femoral Heads ◽  
Hip Replacements ◽  
Postoperative Dislocation

Postoperative dislocation of total hip replacements has been documented to occur at a rate of approximately 2.4–3.9% [1–3]. Such events may result in the transfer of titanium from the acetabular cup to the femoral head, both during the dislocation and surgical reduction of the dislocated joint [3,4]. If the head is reduced with this transfer present, the joint life expectancy, which depends on articulating surfaces remaining smooth, is reduced [4]. Although the presence of metal transfer on retrieved femoral heads after dislocation is documented, no previous studies have attempted to quantify the forces or contact stresses at which metal transfer occurs.

Outcome of Revision Arthroplasty for Failed Metal-On-Metal Total Hip Replacements; is there a Relation with Metal Ions?

2017 ◽  
Vol 27 (3) ◽  
pp. 235-240 ◽  
Author(s):  
Hafiz J. Iqbal ◽  
Waheeb A.K. Al-Azzani ◽  
Esther Jackson-Taylor ◽  
Elizabeth Clatworthy ◽  
Alun John
Keyword(s):  
Metal Ions ◽  
Revision Surgery ◽  
Revision Arthroplasty ◽  
Poor Correlation ◽  
Metal Debris ◽  
Total Hip ◽  
Total Hip Replacements ◽  
Metal On Metal ◽  
Hip Replacements ◽  
Oxford Hip Score

Purpose We aimed to assess the early outcome following revision arthroplasty for failed metal-on-metal (MoM) total hip replacements (THR) due to adverse reaction to metal debris (ARMD). Methods We reviewed 106 consecutive revision arthroplasties. Case notes and radiological investigations were reviewed to assess the complications. Oxford Hip Score (OHS) and Euroqol (EQ-5D-3L) scores were used to assess the functional outcome and improvement of quality of life. Results At a mean follow-up of 20 months (12-48 months), the mean OHS was 28.7. Pain improved in 61% patients. A majority of patients were in level 2 for all the EQ-5D-3L dimensions. The overall complication rate was 16%. Survivorship free from further revision for any cause was 94.3% at 48 months. There was no correlation between pre-revision blood metal ions and the final outcome. Conclusions Revision surgery for failed MoM hip replacement due to ARMD is associated with a relatively higher rate of complications and risk of chronic pain. There is poor correlation between serum metal ions and development of ARMD and outcome following revision surgery.

Modern Metal on Metal Articulation for Total Hip Replacements

1996 ◽  
Vol 333 ◽  
pp. 108???117 ◽  
Author(s):  
Lawrence D. Dorr ◽  
Kevin R. Hilton ◽  
Zhinian Wan ◽  
George D. Markovich ◽  
Roy Bloebaum
Keyword(s):  
Total Hip ◽  
Total Hip Replacements ◽  
Metal On Metal ◽  
Hip Replacements

scholarly journals Four-year study of cobalt and chromium blood levels in patients managed with two different metal-on-metal total hip replacements

2003 ◽  
Vol 21 (2) ◽  
pp. 189-195 ◽  
Author(s):  
Christian Lhotka ◽  
Thomas Szekeres ◽  
Ilse Steffan ◽  
Klaus Zhuber ◽  
Karl Zweymüller
Keyword(s):  
Blood Levels ◽  
Total Hip ◽  
Total Hip Replacements ◽  
Metal On Metal ◽  
Hip Replacements
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