Wear induced by motion between bone and titanium or cobalt-chrome alloys

Bischoff, U. W.; Freeman, M. A. R.; Smith, DJ; Tuke, M.; Gregson, P.J.

doi:10.1302/0301-620x.76b5.8083256

Cited by 43 publications

(19 citation statements)

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“…1,36,39 Titanium and its alloys have been used successfully for osseous dental implants, but the cementless titanium alloy prostheses have been less satisfactory. [5][6][7]12 The TiO 2 film is prone to destruction when subjected to the shearing forces acting on functional ortho- paedic implants. This can induce separation of the implant from the bone and enhance metal ion release and the formation of wear particles, leading eventually to aseptic loosening of the prosthesis.…”

Section: Discussionmentioning

confidence: 99%

“…[2][3][4][5] In regard to abrasive and adhesive wear, however, titanium and Ti6Al4V appear to be inferior to other surgical alloys. [5][6][7][8] If an orthopaedic device is subjected to relative sliding at the Ti6Al4V-metal or Ti6Al4V-polyethylene interface there is damage to the passivating surface oxide, with the generation of particulate metal and polyethylene debris and enhanced release of metal ions. [5][6][7][8][9][10][11] This wear debris is responsible for the commonly observed blackening of adjacent tissues and is accompanied by the mobilisation of macrophages leading to osteolysis and aseptic loosening of the implant.…”

mentioning

confidence: 99%

“…[5][6][7][8] If an orthopaedic device is subjected to relative sliding at the Ti6Al4V-metal or Ti6Al4V-polyethylene interface there is damage to the passivating surface oxide, with the generation of particulate metal and polyethylene debris and enhanced release of metal ions. [5][6][7][8][9][10][11] This wear debris is responsible for the commonly observed blackening of adjacent tissues and is accompanied by the mobilisation of macrophages leading to osteolysis and aseptic loosening of the implant. [11][12][13][14][15][16][17][18] Thus, the more widespread use of Ti and its alloys in orthopaedics, especially as articulating components of total joint replacements, depends on our ability to modify their surface chemistry and microstructure.…”

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confidence: 99%

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Osseointegration of Ti6Al4V alloy implants coated with titanium nitride by a new method

Sovak¹,

Weiss²,

Готман

2000

The Journal of Bone and Joint Surgery. British volume

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C oating titanium alloy implants with titanium nitride (TiN) by the method of Powder ImmersionReaction Assisted Coating (PIRAC) produces a stable layer on their surface. We have examined the ability of the new TiN coating to undergo osseointegration. We implanted TiN-coated and uncoated Ti6Al4V alloy pins into the femora of six-month-old female Wistar rats.SEM after two months showed a bone collar around both TiN-coated and uncoated implants. Morphometrical analysis revealed no significant differences between the percentage of the implant-bone contact and the area and volume of the bone around TiN-coated compared with uncoated implants. Electron-probe microanalysis indicated the presence of calcium and phosphorus at the implant-bone interface. Mineralisation around the implants was also confirmed by labelling with oxytetracycline. Strong activity of alkaline phosphatase and weak activity of tartrate-resistant acid phosphatase were shown histochemically. Very few macrophages were detected by the non-specific esterase reaction at the site of implantation.Our findings indicate good biocompatibility and bone-bonding properties of the new PIRAC TiN coatings which are comparable to those of uncoated Ti6Al4V alloy implants. Because of their excellent bio-and mechanical compatibility, titanium (Ti) alloys and Ti6Al4V in particular are often used as materials for femoral stems in cementless total hip prostheses.1-3 The advantages of Ti6Al4V are its superior corrosion resistance, high fatigue strength and low elastic modulus which reduces stress shielding. [2][3][4][5] In regard to abrasive and adhesive wear, however, titanium and Ti6Al4V appear to be inferior to other surgical alloys. [5][6][7][8] If an orthopaedic device is subjected to relative sliding at the Ti6Al4V-metal or Ti6Al4V-polyethylene interface there is damage to the passivating surface oxide, with the generation of particulate metal and polyethylene debris and enhanced release of metal ions. [5][6][7][8][9][10][11] This wear debris is responsible for the commonly observed blackening of adjacent tissues and is accompanied by the mobilisation of macrophages leading to osteolysis and aseptic loosening of the implant. [11][12][13][14][15][16][17][18] Thus, the more widespread use of Ti and its alloys in orthopaedics, especially as articulating components of total joint replacements, depends on our ability to modify their surface chemistry and microstructure. Various surface modifications have been used for improving the wear and corrosion behaviour of Ti alloys. The most commonly used are ultrapassivation of titanium and implantation of nitrogen ions. 1,4,[18][19][20][21] The latter has become a standard procedure for Ti alloys but it cannot guarantee adequate resistance to wear of the critical components of total joint replacements or of long-term service because of the rapid thinning of the hardened layer, which is about 0.5 m thick. [21][22][23] A variety of ceramic coatings has been tested and used for improving the properties of the metal surface and enha...

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

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confidence: 99%

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Osseointegration of Ti6Al4V alloy implants coated with titanium nitride by a new method

Sovak¹,

Weiss²,

Готман

2000

The Journal of Bone and Joint Surgery. British volume

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“…Several studies have attempted to assess the effect of biomaterial on loosening of THAs [3]. However, these series consist primarily of either in vitro or short-to-medium-term clinical studies.…”

Section: Discussionmentioning

confidence: 99%

The influence of biomaterial on patterns of failure after cemented total hip replacement

Ah¹,

Jw²

2002

International Orthopaedics

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We examined aseptic loosening and osteolysis in 77 revised McKee-Arden total hip arthroplasties (THAs) using polyethylene cups and identical femoral stems made from either cobalt chrome alloy or titanium alloy. Time to failure was significantly shorter in the titanium group. Loosening and peri-prosthetic osteolysis occurred with significantly higher frequency in the titanium group compared to the cobalt chrome group.Résumé Nous avons étudié le descellement aseptique et l'ostéolyse pour 77 arthroplasties totales de hanche de McKee-Arden qui utilisent des cupules de polyéthylènes et des tiges fémorales identiques fabriqué soit en alliage de chrome cobalt soit en alliage de titane. Le délai d'échec était considérablement plus court dans le groupe titane. Descellement et ostéolyse péri -prothétique se sont produits avec une fréquence trés supérieure dans le groupe titane comparé au groupe cobalt chrome.

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“…There were also initial design questions with the patellar component regarding the possibility of outer-margin metal edge wear and whether the femoral components might have excess surface wear since titanium alloy articulations had subsequently been considered obsolete. Titanium alloys are less wear resistant due to a thin and mechanically weak oxide layer that forms on the surface compared to cobaltchromium articulations [1,26].…”

Section: Introductionmentioning

confidence: 99%

Does Using Autograft Bone Chips Achieve Consistent Bone Ingrowth in Primary TKA?

Bloebaum

Koller

Willie

et al. 2012

Clinical Orthopaedics &Amp; Related Research

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Background Cementless fixation remains controversial in TKA due to the challenge of achieving consistent skeletal attachment. Factors predicting durable fixation are not clearly understood, but we presumed bone ingrowth could be enhanced by the quantity of host bone and application of autograft bone chips. Questions/purposes We asked: (1) Did the amount of bone ingrowth exceed the amount of periprosthetic and host bone with the addition of autograft bone chips?(2) Did the amount of bone ingrowth increase with implantation time? And (3) did osteolysis along the porous-coated interface and screw tracts progress with implantation time? Methods We measured the amount of bone in the porouscoated, periprosthetic, and host bone regions in 19 postmortem retrieved cementless primary total knee implants. The amount of bone in apposition to the implant surface, and alternatively lysed bone, was analyzed radiographically to assess the progression of osteolysis. Results While bone ingrowth tended to be less than periprosthetic and host bone in all three components, it was only significantly less in the patellar component. Bone ingrowth increased in all three components over time, but progression of osteolysis did not. Conclusions Even after long-term followup, the amount of bone ingrowth did not surpass host bone levels, suggesting the amount of a patient's host bone is a limiting factor in the amount of bone ingrowth achievable for this cementless design. It remains unknown whether compromised osteopenic bone could achieve the amount of bone attachment necessary to provide durable fixation over time.

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Wear induced by motion between bone and titanium or cobalt-chrome alloys

Cited by 43 publications

References 0 publications

Osseointegration of Ti6Al4V alloy implants coated with titanium nitride by a new method

Osseointegration of Ti6Al4V alloy implants coated with titanium nitride by a new method

The influence of biomaterial on patterns of failure after cemented total hip replacement

Does Using Autograft Bone Chips Achieve Consistent Bone Ingrowth in Primary TKA?

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