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Published: 30 August 2021
Fig. 17 Fracture surface of a fractured Ti-6Al-4V hip implant More
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001264
EISBN: 978-1-62708-215-0
... Abstract A type 316L stainless steel “Jewett nail” hip implant failed after 2 months of service. Fracture occurred through the first of five screw holes in the plate section. Microscopic examination of mating fracture surfaces showed that failure had initiated at the outside (convex) surface...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.med.c9001664
EISBN: 978-1-62708-226-6
... Plastic deformation Surgical implants 316L UNS S31603 Fatigue fracture Corrosion fatigue In fractures of and around the head of the femur, a compression hip screw surgical implant is sometimes employed to provide bone alignment and fixation during healing. Figure 1 shows schematically...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006811
EISBN: 978-1-62708-329-4
... of their service life. Medical devices, in some form or another, have been around for thousands of years ( Ref 4 ); however, the device milestones that have shaped modern medical interventions have occurred mostly over the past century ( Fig. 1 ). Orthopedic implants, such as hip and other joint replacements...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001803
EISBN: 978-1-62708-241-9
... This study investigated implants made of titanium alloy Ti6Al4V and 316L steel that were obtained from revision operations between 1993 and 2002. The operations were required because of various types of implant failures. This paper illustrates nine cases of metallurgical failures of a total hip prosthesis...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001819
EISBN: 978-1-62708-180-1
.... Finally, the article discusses the fatigue properties of implant materials and the fractures of total hip joint prostheses. degradation fatigue properties fractures implant deficiencies internal fixation devices orthopedic implants prosthetic implants total hip joint prostheses...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.med.c0048423
EISBN: 978-1-62708-226-6
... was visible where the stem had broken 2 weeks later. Investigation Figure 1(a) shows a radiograph illustrating the broken prosthesis. The dislocation of the fragment of the prosthesis indicated the degree of loosening and implant loading. Fig. 1 Broken hip prosthesis of cast type ASTM F75...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001266
EISBN: 978-1-62708-215-0
... Abstract A cast stainless steel femoral head replacement prosthesis fractured midway down the stem within 13 months of implantation. Visual examination showed severe “orange peel” around the fracture on the concave side. This effect was not observed on the convex side, which suggested fatigue...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.med.c9001690
EISBN: 978-1-62708-226-6
.... In recent years, the emphasis on Nitinol has shifted to its superelastic behavior, and there are several applications in the medical device industries, including hip implants, bone spacers, bone staples, bone anchors, skull plates, vascular and nonvascular stents, and medical guidewires. 29 , 30...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001097
EISBN: 978-1-62708-214-3
... are not used in permanent implants, such as hip or knee joint prostheses, because their corrosion resistance is inadequate; the cobalt-chromium-molybdenum alloys of ASTM F 75 are used instead. Selected References Selected References • Pohler O.E.M. , Failures of Metallic Orthopedic Implants...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001804
EISBN: 978-1-62708-241-9
... Abstract A stainless steel screw securing an orthopedic implant fractured and was analyzed to determine the cause. Investigators used optical and scanning electron microscopy to examine the fracture surfaces and the microstructure of the austenitic stainless steel from which the screw was made...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.med.c9001579
EISBN: 978-1-62708-226-6
...), to 324,000 cycles per month (with 6 h motion per day). 6 Fatigue is a frequent cause of hip-fracture-fixation device failure. 7 In April 1999, a young patient received a stainless steel plate implant for a femoral fracture in the third medial left femur. Sixteen days later the patient was urgently...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.9781627083294
EISBN: 978-1-62708-329-4
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.med.c0048407
EISBN: 978-1-62708-226-6
... concentration was revealed to be high. Crack initiation Surgical implants 316LR Fatigue fracture The plate shown in Fig. 1(a) and (b) was used to treat a pseudarthrosis in the proximal femur. Because healing did not progress, the plate was removed and submitted for investigation. The bone...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001805
EISBN: 978-1-62708-241-9
... and whether or not the tool is meant to be re-used. As with most medical devices, there are tradeoffs for surgical tools between performance and expected lifetimes. For instance, the intended use condition for a hip implant broach handle involves striking the instrument with a hammer. In this case...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006918
EISBN: 978-1-62708-395-9
... 13 shows the hysteresis loops after various numbers of fatigue cycles in both high-impact polystyrene (HIPS) and ABS. Note that the hysteresis loops increase as the fatigue tests ensue; however, the hysteresis loops are symmetric for ABS but are much greater for the tensile portion of the fatigue...
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
... on shafts; and in universal joints and orthopedic implants. Generally, fretting occurs at contacting surfaces that are intended to be fixed in relation to each other but that actually undergo small oscillating motion usually induced by vibration. Other situations concern cyclic thermal dilatation...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006838
EISBN: 978-1-62708-329-4
... are addressed by various mitigation strategies that include: Design strategies/rules to accommodate AM process constraints Modeling Condition monitoring (sometimes in situ during building) Postprocessing, particularly hot isostatic pressing Postprocessing by hot isostatic pressing (HIP) can...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006925
EISBN: 978-1-62708-395-9
...-tetrafluoroethylene copolymer EVA (EUAC) Ethylene-vinyl acetate EVOH, EVAL, EVOL Ethylene-vinyl alcohol FEP Fluorinated ethylene propylene copolymer FEP Tetrafluoroethylene-hexafluoropropylene copolymer FF Furan formaldehyde HDPE High-density polyethylene HIPS High-impact polystyrene...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006939
EISBN: 978-1-62708-395-9