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Scientists devise safer way to reconstruct breasts
Thursday December 08, 2011 08:39:58 AM,
IANS
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Sydney: Reconstruction
of breasts will now become a lot safer and more realistic, thanks
to real tissues grown on a scaffold and then implanted in a new
technique.
"With scaffolding you can get the shape and form right from the
beginning, using a small amount of tissue around one cubic
centimetre from the patient," said Dietmar W. Hutmacher, professor
of biomedical innovation at the Queensland University of
Technology (QUT).
"The scaffold is biodegradable. After two to three years it will
dissolve, whereas silicone implants, the most common material used
in breast reconstruction surgery, stays forever and can cause a
lot of long-term problems such as fibrous encapsulation," he said.
Hutmacher recently used computer aided design (CAD) to produce
moulds accurately modelled on a laser scan of a patient's healthy
breast, according to a university statement.
It was conducted as part of a research project with engineers and
surgeons in Singapore and Germany. They successfully used the
moulds during tissue reconstruction operations.
"Previously the surgeon would do everything by eye and feel. With
the mould they have a physical template to check out the exact
shape and tissue volume needed for the reconstruction surgery,"
said Hutmacher.
The CAD which created the moulds has also been used to create
biodegradable 3D scaffolds, on which a patient's own tissue could
be grown.
"When you think about the volume of a breast, to recreate this
with randomly shaped tissue removed from elsewhere on a patient's
body is quite difficult. Normally patients have two or three
operations to enable the surgeon to correct and get the shape
right," Hutmacher added.
Hutmacher is currently testing different materials for the
scaffolding. His goal is to have this technology ready for
clinical use in three to five years.
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