With the random motion and load pin-on-disk (RandomPOD) wear test system, conventional and highly crosslinked ultrahigh molecular weight polyethylenes (UHMWPE) were run against CoCr counterfaces with different surface roughnesses. The unique 16-station, computer-controlled pin-on-disk device produced noncyclic motion and load. With appropriate specimen shapes, simulations of wear mechanisms of both hip and knee prostheses were performed. Against polished counterfaces, the crosslinked UHMWPE showed negligible wear. Its wear against severely roughened counterfaces was close to that of conventional UHMWPE against polished counterfaces. The reduction in wear with crosslinked versus conventional UHMWPE was 80–86% in the hip and 87–96% in the knee wear simulation. The wear particles were of clinically relevant size and shape which indicated realistic wear mechanisms.

References

References
1.
Saikko
,
V.
, and
Kostamo
,
J.
,
2011
, “
RandomPOD—A New Method and Device for Advanced Wear Simulation of Orthopaedic Biomaterials
,”
J. Biomech.
,
44
(
5
), pp.
810
814
.
2.
Saikko
,
V.
, and
Kostamo
,
J.
,
2013
, “
Performance Analysis of the RandomPOD Wear Test System
,”
Wear
,
297
(
1–2
), pp.
731
735
.
3.
Saikko
,
V.
,
2014
, “
In Vitro Wear Simulation on the RandomPOD Wear Testing System as a Screening Method for Bearing Materials Intended for Total Knee Arthroplasty
,”
J. Biomech.
,
47
(
11
), pp.
2774
2778
.
4.
Saikko
,
V.
,
Vuorinen
,
V.
, and
Revitzer
,
H.
,
2015
, “
Analysis of UHMWPE Wear Particles Produced in the Simulation of Hip and Knee Wear Mechanisms With the RandomPOD System
,”
Biotribology
,
1–2
, pp.
30
34
.
5.
Saikko
,
V.
,
Ahlroos
,
T.
, and
Calonius
,
O.
,
2001
, “
A Three-Axis Knee Wear Simulator With Ball-On-Flat Contact
,”
Wear
,
249
(
3–4
), pp.
310
315
.
6.
Wang
,
A.
,
Stark
,
C.
, and
Dumbleton
,
J. H.
,
1996
, “
Mechanistic and Morphological Origins of Ultra-High Molecular Weight Polyethylene Wear Debris in Total Joint Replacement Prostheses
,”
Proc. Inst. Mech. Eng., Part H
,
210
(
3
), pp.
141
155
.
7.
Sychterz
,
C. J.
,
Engh
,
C. A.
, Jr.
,
Swope
,
S. W.
,
McNulty
,
D. E.
, and
Engh
,
C. A.
,
1999
, “
Analysis of Prosthetic Femoral Heads Retrieved at Autopsy
,”
Clin. Orthop. Relat. Res.
,
358
, pp.
223
234
.
8.
Mai
,
K. T.
,
Verioti
,
C.
,
D'Lima
,
D.
,
Colwell
,
C. W.
, Jr.
, and
Ezzet
,
K. A.
,
2010
, “
Surface Roughness of Femoral Head Prostheses After Dislocation
,”
Am. J. Orthop.
,
39
(
10
), pp.
495
500
.
9.
Ito
,
H.
,
Maloney
,
C. M.
,
Crowninshield
,
R. D.
,
Clohisy
,
J. C.
,
McDonald
,
D. J.
, and
Maloney
,
W. J.
,
2010
, “
In Vivo Femoral Head Damage and Its Effect on Polyethylene Wear
,”
J. Arthroplasty
,
25
(
2
), pp.
302
308
.
10.
Scholes
,
S. C.
,
Kennard
,
E.
,
Gangadharan
,
R.
,
Weir
,
D.
,
Holland
,
J.
,
Deehan
,
D.
, and
Joyce
,
T. J.
,
2013
, “
Topographical Analysis of the Femoral Components of Ex Vivo Total Knee Replacements
,”
J. Mater. Sci. Mater. Med.
,
24
(
2
), pp.
547
554
.
11.
Kurtz
,
S. M.
,
Gawel
,
H. A.
, and
Patel
,
J. D.
,
2011
, “
History and Systematic Review of Wear and Osteolysis Outcomes for First-Generation Highly Crosslinked Polyethylene
,”
Clin. Orthop. Relat. Res.
,
469
(
8
), pp.
2262
2277
.
12.
Kurtz
,
S.
,
Zielinska
,
O.
,
MacDonald
,
D.
,
Cates
,
H.
,
Mont
,
M.
,
Malkani
,
A.
,
Parvizi
,
J.
,
Kraay
,
M.
,
Rimnac
,
C.
, and
Klein
,
G.
,
2014
, “
Retrieval Analysis of Second Generation HXLPE Used in Total Hip Arthroplasty and Total Knee Arthroplasty
,”
Bone Joint J.
,
96-B
(
Suppl. 11
), p.
154
.
13.
Wang
,
A.
,
Polineni
,
V. K.
,
Stark
,
C.
, and
Dumbleton
,
J. H.
,
1998
, “
Effect of Femoral Head Surface Roughness on the Wear of Ultra-High Molecular Weight Acetabular Cups
,”
J. Arthroplasty
,
13
(
6
), pp.
615
620
.
14.
McKellop
,
H.
,
Shen
,
F.
,
DiMaio
,
W.
, and
Lancaster
,
J. G.
,
1999
, “
Wear of Gamma-Crosslinked Polyethylene Acetabular Cups Against Roughened Femoral Balls
,”
Clin. Orthop. Relat. Res.
,
369
, pp.
73
82
.
15.
Bowsher
,
J. G.
, and
Shelton
,
J. C.
,
2001
, “
A Hip Simulator Study of the Influence of Patient Activity Level on the Wear of Crosslinked Polyethylene Under Smooth and Roughened Femoral Conditions
,”
Wear
,
250
(
1–12
), pp.
167
179
.
16.
Saikko
,
V.
,
Calonius
,
O.
, and
Keränen
,
J.
,
2001
, “
Effect of Counterface Roughness on the Wear of Conventional and Crosslinked Ultrahigh Molecular Weight Polyethylene Studied With a Multidirectional Motion Pin-On-Disk Device
,”
J. Biomed. Mater. Res.
,
57
(
4
), pp.
506
512
.
17.
Bragdon
,
C. R.
,
Jasty
,
M.
,
Muratoglu
,
O. K.
,
O'Connor
,
D. O.
, and
Harris
,
W. H.
,
2003
, “
Third-Body Wear of Highly Cross-Linked Polyethylene in a Hip Simulator
,”
J. Arthroplasty
,
18
(
5
), pp.
553
561
.
18.
Muratoglu
,
O. K.
,
Burroughs
,
B. R.
,
Bragdon
,
C. R.
,
Christensen
,
S.
,
Lozynsky
,
A.
, and
Harris
,
W. H.
,
2004
, “
Knee Simulator Wear of Polyethylene Tibias Articulating Against Explanted Rough Femoral Components
,”
Clin. Orthop. Relat. Res.
,
428
, pp.
108
113
.
19.
Calonius
,
O.
, and
Saikko
,
V.
,
2002
, “
Analysis of Polyethylene Particles Produced in Different Wear Conditions In Vitro
,”
Clin. Orthop. Relat. Res.
,
399
, pp.
219
230
.
20.
Harris
,
W. H.
,
2001
, “
Wear and Periprosthetic Osteolysis—The Problem
,”
Clin. Orthop. Relat. Res.
,
393
, pp.
66
70
.
21.
Schmalzried
,
T. P.
,
Campbell
,
P.
,
Schmitt
,
A. K.
,
Brown
,
I. C.
, and
Amstutz
,
H. C.
,
1997
, “
Shapes and Dimensional Characteristics of Polyethylene Wear Particles Generated In Vivo by Total Knee Replacements Compared to Total Hip Replacements
,”
J. Biomed. Mater. Res.
,
38A
(
3
), pp.
203
210
.
22.
Kurtz
,
S. M.
,
2009
,
UHMWPE Biomaterials Handbook
,
2nd ed.
,
Elsevier
,
Amsterdam, The Netherlands
.
23.
MacDonald
,
D.
,
Sakona
,
A.
,
Ianuzzi
,
A.
,
Rimnac
,
C. M.
, and
Kurtz
,
S. M.
,
2011
, “
Do First-Generation Highly Crosslinked Polyethylenes Oxidize In Vivo?
Clin. Orthop. Relat. Res.
,
469
(
8
), pp.
2278
2285
.
24.
ASTM
,
2015
, “
Standard Practice for Accelerated Aging of Ultra-High Molecular Weight Polyethylene After Gamma Irradiation in Air
,” ASTM International, West Conshohocken, PA, Standard No. F2003-02.
25.
Saikko
,
V.
,
2014
, “
Effect of Shelf Versus Accelerated Aging of UHMWPE on Delamination in Knee Wear Simulation
,”
Tribol. Int.
,
73
, pp.
10
16
.
26.
Collier
,
J. P.
,
Sperling
,
D. K.
,
Currier
,
J. H.
,
Sutula
,
L. C.
,
Saum
,
K. A.
, and
Mayor
,
M. B.
,
1996
, “
Impact of Gamma Sterilization on Clinical Performance of Polyethylene in the Knee
,”
J. Arthroplasty
,
11
(
4
), pp.
377
389
.
You do not currently have access to this content.