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Re: boston745 post# 40646

Saturday, 03/16/2024 2:46:57 PM

Saturday, March 16, 2024 2:46:57 PM

Post# of 40972
Here are some of the studies Dr. Pezzotti did before and after he joined Sintx Scientific board in 2015. You'll see multi-year consistent research into liners for use in hip implants, specifically relating to Biomet liners. This is not a comprehensive list but represents alot of work done by Dr Pezzotti on behalf of Biomet; part of the Zimmer-Biomet family of companies as of 2015.

Amedica Corporation Adds Giuseppe Pezzotti, PhD to Its Scientific Advisory Board
https://ir.sintx.com/news-events/press-releases/detail/53/amedica-corporation-adds-giuseppe-pezzotti-phd-to-its

2007
Confocal Raman spectroscopic analysis of cross-linked ultra-high molecular weight polyethylene for application in artificial hip joints

One new [Fig. 1(A)] and two retrieved cross-linked UHMWPE acetabular cups [Figs. 1(B) and 1(C)] were investigated. The two retrieved acetabular cups were obtained at the time of revision surgery from total hip arthroplasty. All the acetabular components investigated in this study were manufactured by Biomet Japan Incorporated (Tokyo, Japan). New acetabular components (ArCom®, Biomet Incorporated) were made from GUR 1050 bar stock by isostatic compression molding (with no addition of calcium stearate) and successive surface irradiation by a ? -ray dose of 33kGy


2010
Raman tensor analysis of ultra-high molecular weight polyethylene and its application to study retrieved hip joint components

The short-term retrieved acetabular components were both made of highly cross-linked polyethylene, manufactured from 1900H bar stock by isostatic compression molding (with no addition of calcium stearate) (ArComÒ, Biomet Japan Inc., Tokyo, Japan


2011
Structural profile of ultra-high molecular weight polyethylene in acetabular cups worn on hip simulators characterized by confocal Raman spectroscopy

Thus, we compared acetabular cups made of two types of polyethylenes, the old ArCom® and new ArComXL™.


Two types of acetabular cups were examined, which were both manufactured by Biomet Inc., Warsaw, IN.


2012
In-Depth Oxidation and Strain Profiles in UHMWPE Acetabular Cups Non-Destructively Studied by Confocal Raman Microprobe Spectroscopy

One new and four retrieved cross-linked UHMWPE acetabular cups have been investigated. The four retrieved acetabular cups were obtained at the time of the re-spective hip arthroplasty revision surgeries. All acetabular components (ArCom ® , Biomet) were made from 1900H bar stock by isostatically direct compression molding and surface irradiated by a ? -ray dose of 33 kGy.


2014
Strain-induced microstructural rearrangement in ultra-high molecular weight polyethylene for hip joints: A comparison between conventional and vitamin E-infused highly-crosslinked liners

Three types of acetabular liners were analyzed, which had gone through a different manufacturing process. All liners had a diameter of 32 mm and were provided by Biomet Inc., Warsaw, IN, USA. One type of liner was the newly launched liner E1®, available on the international market since 2007. Another type of component belonged to a former generation of polyethylene, the brand ArCom®, which was clinically introduced in 1995 and it is currently commercially available.


2015
Environmental Stability and Residual Stresses in Zirconia Femoral Head for Total Hip Arthroplasty: In Vitro Aging versus Retrieval Studies

The 28?mm sized 3Y-TZP femoral heads (n = 3) were provided by Biomet Inc. (Warsaw, IN). These were manufactured by Saint-Gobain Desmarquest Inc. (Evreux, France). These heads were distributed with the trade name of Prozyr (currently out of market since 2001).


2018
Do rim cracks and backside grinding affect the aging kinetics of alumina-matrix composite acetabular liners?: DO CRACKS AND GRINDING AFFECT THE AGING KINETICS IN AMC LINERS?

Schematic cross-section representation of the AMC (BIOLOX® delta) acetabular system (G7®, Zimmer Biomet G.K., Tokyo, Japan).



Quote Source:
2007 https://www.spiedigitallibrary.org/journals/journal-of-biomedical-optics/volume-12/issue-01/014011/Confocal-Raman-spectroscopic-analysis-of-cross-linked-ultra-high-molecular/10.1117/1.2710247.full#_=_
2010 https://iris.unive.it/retrieve/61fda02d-dae7-49bb-9850-7201c02d3a6a/Raman_tensor_analysis_of_ultra-high_molecular_weight_polyethylene_and_its_application_to_study_retri.pdf
2011 https://onlinelibrary.wiley.com/doi/full/10.1002/jor.21331
2012 https://iris.unive.it/bitstream/10278/5018766/2/In-Depth_Oxidation_and_Strain_Profiles_in_UHMWPE_Acetabular_Cups_Non-Destructively_Studied_by_Confoc.pdf
2014 https://www.sciencedirect.com/science/article/abs/pii/S175161611200344X
2015 https://pdfs.semanticscholar.org/1f69/d96c2ec91f33070939ff9784aca088fd970f.pdf
2018 https://www.researchgate.net/figure/a-Schematic-cross-section-representation-of-the-AMC-BIOLOXR-delta-acetabular-system_fig1_327874215

Could it be that there is a strategy to distract people away from looking at the basic data?
Is all this an exercise to create more and more forum verbiage to drown out any serious discussion of evidence?

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