Enhancement of the fixation of pyrolytic carbon implants by using atomic oxygen texturing

Hetherington, Vincent J.; Kawalec, Jill S.; Bhattacharyya, Bhaskar

doi:10.1053/j.jfas.2003.11.007

Cited by 5 publications

(5 citation statements)

References 8 publications

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“…An examination of the available literature revealed that osseous ''ongrowth'' may provide only weak fixation, appositional fixation may not always occur, and loosening may be common with pyrolytic carbon implants. Pyrolytic carbon is known to have relatively poor attachment strength to bone 11,[32][33][34][35] , and one early report emphasized that ''appositional attachment'' is one order of magnitude less than attachment by bone ingrowth 11 . The intimate contact necessary for appositional fixation also does not occur in all pyrolytic carbon implants.…”

Section: Discussionmentioning

confidence: 99%

Pyrolytic Carbon Resurfacing Arthroplasty for Osteoarthritis of the Proximal Interphalangeal Joint of the Finger

Sweets

Stern

2011

Journal of Bone and Joint Surgery

113

100

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Interphalangeal joint motion decreased significantly at the final follow-up evaluation, following short-term gains in the initial postoperative period. Complications were numerous, and implant loosening with migration was a major problem. Arthroplasty of the proximal interphalangeal joint with a pyrolytic carbon implant has a high complication rate, poor outcomes, and variable patient satisfaction. On the basis of these findings, we no longer use this implant in our practice.

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Section: Discussionmentioning

confidence: 99%

Pyrolytic Carbon Resurfacing Arthroplasty for Osteoarthritis of the Proximal Interphalangeal Joint of the Finger

Sweets

Stern

2011

Journal of Bone and Joint Surgery

113

100

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“…PyC is usually prepared by pyrolytic decomposition of hydrocarbon vapours, which are deposited on a substrate. This material is reasonably biocompatible …”

Section: Introductionmentioning

confidence: 99%

“…This material is reasonably biocompatible. 5,11,15,16 Ti-C:H is a nomenclature for a layer with a mixture of carbon and titanium atoms, sometimes with a gradual decrease in the titanium concentration to almost pure carbon through the thickness of the layer. This layer has usually been prepared by radio frequency magnetron sputtering.…”

Section: Introductionmentioning

confidence: 99%

Influence of surface roughness of carbon materials on human osteoblast‐like cell growth

Starý

Douderova

Bačáková

2013

J Biomedical Materials Res

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This article presents a study of the dependence of the biocompatibility of a carbon-based material, namely a 2D C/C composite, on mechanical and chemical surface modifications. The mechanical modifications were surface grinding and polishing, and chemical modifications were made by depositing thin layers of pyrolytic carbon, titanium-carbon and DLC layers. Human osteoblast-like MG 63 cells were cultivated on these materials. The densities of the cells after one-day cultivation and after four-day cultivation, and the average cell spreading area after one-day cultivation, were evaluated in dependence on particular surface roughness parameters. The minima of the cell density on pyrolytic carbon and titanium-carbon layers were found; they were connected with the maxima of the average cell area. For DLC, the cell area decreased as the roughness parameter Ra increased in the range 0.1-10 µm, although the minimum appeared for the density of the cells. Using a multivariate test, the dependences of the biocompatibility parameters on the layer material and on surface grinding were statistically significant. The results suggest that the optimal roughness parameters for MG 63 cell on carbon based surface were Ra ∼ 3.5 µm, RSm ∼0.03-0.08 mm, Rsk ∼0 or negative and Rku ∼ 20, DLC being the best material choice. These values of roughness were obtained by simple mechanical grinding of substrate and coating by DLC layer.

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“…The present study was focused on a kind of carbon femoral head coated with low temperature isotropic pyrolytic carbon (LTI carbon) film. The most prominent clinical application of pyrolytic carbon is in the area of heart valve components [5], which shows the good biocompatibility and fatigue resistance of this material. However, whether the coated carbon femoral head prosthesis was compatible with the hip articulation environment was not clear yet.…”

Section: Introductionmentioning

confidence: 99%

<i>In Vivo</i> Study of Carbon Artificial Femoral Head

Chen

Yuan

Sun

et al. 2010

KEM

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Hip hemiarthroplasty is a popular method for curing hip joint diseases. Comparing with the total hip replacement (THR), hip hemiarthroplasty has some advantages, such as simpler operation, lower cost and less injury. However, inevitable acetabular cartilage wear, which leads to ultimately conversion to THR, has been reported by many authors. That limits its applications. To solve this problem, more suitable biomaterial should be chosen to make the femoral head. In this research, a kind of carbon femoral head, which was made of graphite coated with low temperature isotropic pyrolytic carbon, was studied in vivo. Nineteen New Zealand adult white rabbits were divided into 3 groups. Every rabbit was taken the replacement operation and time-dependently killed after certain periods. X-ray photographs of the hip joint, macroscopic apperarance and histological morphometry of the neocartilage around the prosthesis, were examined. The results proved that the coating material of the femoral head was biocompatible and the neocartilage tissue around the prothetic head might protect the acetabulum from wear. However, because of the complicated physiological environment, further research is needed.

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Enhancement of the fixation of pyrolytic carbon implants by using atomic oxygen texturing

Cited by 5 publications

References 8 publications

Pyrolytic Carbon Resurfacing Arthroplasty for Osteoarthritis of the Proximal Interphalangeal Joint of the Finger

Pyrolytic Carbon Resurfacing Arthroplasty for Osteoarthritis of the Proximal Interphalangeal Joint of the Finger

Influence of surface roughness of carbon materials on human osteoblast‐like cell growth

<i>In Vivo</i> Study of Carbon Artificial Femoral Head

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