Oxidation of Silicone Elastomer Finger Joints

Naidu, Sanjiv H.

doi:10.1016/j.jhsa.2006.11.005

Cited by 8 publications

(4 citation statements)

References 11 publications

(13 reference statements)

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“…There are also studies where explanted silicone implants from human bodies, taken either due to patient death or revision of an implant, have been examined. In one study silicone elastomer finger joints retrieved from patients had a higher oxygen content than control silicone implants still in their packets 12. In another study the mechanical properties of silicone rubber used for pacemaker lead insulations were examined after long term implantation of up to 11 years 10.…”

Section: Discussionmentioning

confidence: 99%

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The effect of the environment on the mechanical properties of medical grade silicones

et al. 2008

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Silicone spacers have been in use as replacement joints in the human hand for over 30 years. Since they were first used there has been a number of designs all of which have had problems with fracture. This may be due to a defect in the material caused during implantation, or by bony intrusions within the arthritic hand after implantation. The aim of this research was to investigate the effect of the environment on the mechanical properties of medical grade silicones used for human implantation. The materials were subjected to static tensile testing after various forms of ageing. The environmental conditions included temperatures of 37 and 80 degrees C and the environments of Ringer's solution, distilled water, and air. The environmental conditions employed resulted in reduced mechanical strength with ageing time of the silicones. This research supports the view that failure of silicone implants in the hand could be partly attributed to the effects of environmental ageing of the material.

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Section: Discussionmentioning

confidence: 99%

“…Medical grade silicone is considered to be a material with good biostability8, 9 in that it is not expected to degrade once implanted. However, several studies show evidence of a change in mechanical properties of silicones after implantation or artificial ageing,9–15 while other studies claim that no changes occur 16–18…”

Section: Introductionmentioning

confidence: 99%

The effect of the environment on the mechanical properties of medical grade silicones

et al. 2008

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“…Silastic finger joint implants were made with heat-vulcanizing addition-cure silicones. Naidu's article 11 involves actual silicone finger joint implants; however, it has many shortcomings including the use of unsuitable equipment, inappropriate references and noncomparable nonimplanted controls. 12 We should also like to point out that their correlation between tensile strength and clinical performance of silicone finger joints is not supported.…”

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confidence: 99%

Letter to the editor: The effect of the environment on the mechanical properties of medical grade silicones

2009

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“…In his article "Oxidation of Silicone Elastomer Finger Joints," 1 Naidu concluded silicone is oxidized in vivo based on comparing oxygen content measurements of explanted and nonimplanted specimens. Technical oversights severely limit the work's utility and call the conclusions into question.…”

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confidence: 99%