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hip-wear simulation standards

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Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005678
EISBN: 978-1-62708-198-6
... mechanical components of the testing machine, rather than of the total replacement joints themselves. Fig. 8 Multistation hip joint simulator duplicates walking and other human motions typically encountered by prosthetic implants The evaluation of wear in implants tested in joint simulators is...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.9781627081979
EISBN: 978-1-62708-197-9
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005654
EISBN: 978-1-62708-198-6
... importance. This leads to the important concept of implant material/device failure. While there are several mechanisms by which metallic load-bearing implants may not achieve their intended goal, the primary engineering-related mechanisms are by wear, corrosion, fretting corrosion, CF, and SCC. Should...
Book Chapter

By Peter J. Blau
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003242
EISBN: 978-1-62708-199-3
... commercial testing machines have also been developed to study such effects, like machines that simulate the movements of surgical knee and hip replacement components in bodylike fluids. As with mechanical testing in general, commercial wear testing machines are being computer automated. While automation...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006829
EISBN: 978-1-62708-295-2
... entire total hip joint prosthesis. Note that the development of modular-design hip joints involving numerous interfaces tends to exacerbate fretting wear problems in the prosthesis assembly, underlining the necessity to develop new palliatives to reduce such phenomena ( Ref 40 ). Fig. 6...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005668
EISBN: 978-1-62708-198-6
.... A common example of this test configuration is the investigation of fatigue wear of ultrahigh-molecular-weight polyethylene (UHMWPE) for hip implants, where the UHMWPE ball reciprocates against a flat metallic CoCr counterface. The counterface is usually in the form of a disk that must be held down...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003008
EISBN: 978-1-62708-200-6
... appearance, and it competes with clear ABS because of its excellent clarity and good color. High-impact polystyrene (HIPS) has excellent processibility and competes with the lower-impact end of the ABS spectrum, although it is very deficient in chemical resistance and appearance. In fact, none of these...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005674
EISBN: 978-1-62708-198-6
... catastrophic wear, if the treated surface wears away or becomes discontinuous during prolonged use in humans. Ion implantation is one of the common methods. Titanium and cobalt-chromium alloy orthopaedic prostheses for hip and knee joints are among the most successful commercial applications for ion...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003061
EISBN: 978-1-62708-200-6
... Accuracy for instrument bearings Electrical insulator Eliminates or reduces arcing across bearing Source: Ref 19 More recently, HIP Si 3 N 4 has been developed, which has further increased the fatigue life and wear resistance of Si 3 N 4 rolling elements ( Fig. 10 ). Other high-purity Si...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005665
EISBN: 978-1-62708-198-6
... as cobalt-chromium alloys when highly corrosion-resistant materials are required ( Ref 14 ). However, crevice and fretting corrosion may occur due to scratches and the presence of third-body wear. Chromium is widely used as a component of orthopaedic devices such as hip, knee, and shoulder...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005669
EISBN: 978-1-62708-198-6
... recommended for use in sites subjected to high wear, such as the bearing regions of hip or knee replacements. For such applications, high carbide content appears important. Forging of high-carbon CoCrMo alloys is possible, although the procedure for doing so is difficult and costly, requiring very close...
Book Chapter

By Matthew Donachie
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003168
EISBN: 978-1-62708-199-3
... does not penetrate the dense ceramic. Bioinert ceramics have several applications in the human body. In hip implants, it has been found that polished high-density ceramics such as alumina have less friction and wear than metals when articulated against UHMWPE. Ceramics tend to show high moduli...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005682
EISBN: 978-1-62708-198-6
... to the formation of chemically abrupt interfaces that are detrimental to the properties of the implant. For example, it was a standard convention of using titanium alloy stems for orthopaedic applications to be fitted with more wear-resistant cobalt alloy for the head. However, some of the designs...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005652
EISBN: 978-1-62708-198-6
... ( Ref 56 , 57 ) appear to deal with prostheses in which there was deliberate movement of two metallic surfaces against each other (metal-on-metal hip prostheses), which holds the potential for increased release of metal ions with repetitive repassivation as wear occurs. Additionally, in a study of 1358...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005656
EISBN: 978-1-62708-198-6
... Abstract Porous coatings are used in the field of joint replacement, particularly in cementless total hip/knee arthroplasty. This article reviews the offerings and biomaterial properties in orthopedic surgery for the contemporary class of highly porous metals. It describes the traditional...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003114
EISBN: 978-1-62708-199-3
... rise to age hardening and thus increased resistance to abrasive wear. The origin of the “ASM” designations for the proprietary steels listed in Table 2 dates back to the 1948 edition of Metals Handbook. ASM International does not issue standards of any kind. However, because these steels were...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005655
EISBN: 978-1-62708-198-6
... acetabular cup of a total hip replacement prosthesis can be made of alumina. Alumina-on-alumina prostheses have a low coefficient of friction, superior wear properties compared to metal-on-polymer and metal-on-metal prostheses, and high scratch resistance ( Ref 19 ). However, alumina prostheses do carry a...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006266
EISBN: 978-1-62708-169-6
... °F)/12/AC IN-713 As-cast IN-718 1095 °C (2000 °F)/1/AC + 955 °C (1750 °F)/1/AC + 720 °C (1325 °F)/8/FC + 620 “C (1150 °F)/8/AC IN-718 with hot isostatic pressing (HIP) 1150 °C (2100 °F)/4/FC + 1190 °C (2175 °F)/4/15 ksi (HIP) + 870 °C (1600 °F)/10/AC + 955 °C (1750 °F)/1/AC + 730 °C (1350...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001292
EISBN: 978-1-62708-170-2
... resistance to wear under mild abrasive or lubricated sliding conditions. This wear resistance is especially noteworthy in alloy surfaces that contain elements forming stable nitrides. Titanium and Co-Cr alloy orthopedic prostheses for hips and knees are among the most successful commercial applications of...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005330
EISBN: 978-1-62708-187-0
... density of steel is high, steel can offer equal strength-to-weight ratios compared to either titanium or aluminum, and at a fraction of the cost of titanium or with a superior modulus of elasticity compared to aluminum. Cast steel also offers wear resistance, corrosion resistance, heat resistance, and...