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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.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
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.med.c9001664
EISBN: 978-1-62708-226-6
... Abstract A compression hip screw is a device designed to hold fractures in the area of the femur in alignment and under compression. A side plate, which is an integral part of the device, is attached by screws to the femur, and it holds the compression screw in position. The device analyzed had...
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...
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Published: 01 January 2002
Fig. 1 Typical examples for joint prostheses (schematic). (a) Classic Moore hip endoprosthesis. (b) Müller total hip prosthesis (metal against polyethylene acetabular cap). (c) Weber total hip prosthesis with movable head and metal, ceramic, and polyethylene components. (d) Müller total hip More
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Published: 01 January 2002
Fig. 33 Broken hip prosthesis of cast type ASTM F75 cobalt-chromium-molybdenum alloy. (a) Radiograph of total hip prosthesis. Circular wire marks acetabulum component made from plastics. Arrows (from top to bottom) indicate the area where the prosthesis stem is loosening at the collar, a stem More
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Published: 01 January 2002
Fig. 34 Metallographic sections of failed hip prosthesis shown in Fig. 33 . (a) Longitudinal section through fracture surface showing secondary fatigue crack parallel to fracture surface. 35×. (b) Cross section through prosthesis stem showing gas pores and second phase at grain boundaries More
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Published: 01 January 2002
Fig. 35 Optical fracture analysis of the failed hip prosthesis shown in Fig. 33 . (a) Fracture surface exhibiting large grains. The upper right grain is identical to grain A shown in Fig. 36(a) . Crack originated at the lateral side of the stem. (b) Longitudinal section through fracture More
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Published: 01 January 2002
Fig. 36 SEM fracture-surface analysis of the failed hip prosthesis shown in Fig. 33 . (a) Fracture surface showing three distinct grains labeled A, B, and C. (b) Grain A has a shallow crystallographically oriented fracture structure. (c) Grain B has a crystallographically oriented fracture More
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Published: 30 August 2021
Fig. 17 Fracture surface of a fractured Ti-6Al-4V hip implant More
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Published: 01 June 2019
Fig. 1 Broken hip prosthesis of cast type ASTM F75 cobalt-chromium-molybdenum alloy. (a) Radiograph of total hip prosthesis. Circular wire marks acetabulum component made from plastics. Arrows (from top to bottom) indicate the area where the prosthesis stem is loosening at the collar, a stem More
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Published: 01 June 2019
Fig. 2 Metallographic sections of failed hip prosthesis shown in Fig. 1 . (a) Longitudinal section through fracture surface showing secondary fatigue crack parallel to fracture surface. 35×. (b) Cross section through prosthesis stem showing gas pores and second phase at grain boundaries More
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Published: 01 June 2019
Fig. 3 Optical fracture analysis of the failed hip prosthesis shown in Fig. 1 . (a) Fracture surface exhibiting large grains. The upper right grain is identical to grain A shown in Fig. 4(a) . Crack originated at the lateral side of the stem. (b) Longitudinal section through fracture surface More
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Published: 01 June 2019
Fig. 4 SEM fracture-surface analysis of the failed hip prosthesis shown in Fig. 1 . (a) Fracture surface showing three distinct grains labeled A, B, and C. (b) Grain A has a shallow crystallographically oriented fracture structure. (c) Grain B has a crystallographically oriented fracture More
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Published: 01 June 2019
Fig. 1 A drawing showing a compression hip screw device of the type investigated here, used for fracture fixation in the vicinity of the femur. More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0090181
EISBN: 978-1-62708-229-7
.... The blade vendor found that the lot of hot isostatically pressed (HIP) blade castings had been exposed to an improper atmosphere during the HIP process, resulting in the weakened structure. Because subsequent failures were found in blades that did not come from the suspect HIP lot, the scope of the problem...
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
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001803
EISBN: 978-1-62708-241-9
... Abstract Metallurgical SEM analysis provides many insights into the failure of biomedical materials and devices. The results of several such investigations are reported here, including findings and conclusions from the examination a total hip prosthesis, stainless steel and titanium compression...
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Published: 15 May 2022
Fig. 13 Hysteresis loops after various numbers of fatigue cycles in both (a) acrylonitrile-butadiene-styrene and (b) high-impact polystyrene (HIPS). Note the lack of symmetry in the HIPS due to crazing mechanisms that require tensile component stress. More
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Published: 01 January 2002
) Classical Bagby compression bone plate. (j) Cortical bone screw. (k) Cancellous bone screw (with shaft to produce compression). (l) Condylar angle blade plate. (m) Hip plate for osteotomies. (n) Jewett nail plate with three-flanged nail. (o) Two-component dynamic hip screw plate. (p) Miniature L-plate More