Mutars growing prostheses - Canmed Ortopedi Medikal

MUTARS ®
BIO-Xpand
Lengthening of the bone
The biological non-invasive growing modules of the MUTARS ® system based on the
FITBONE ® principle of an expandable interlocking nail to initiate a callus distraction in
order to lengthening the extremity while lengthening the bone instead of lengthening
the prosthetic parts.
Design principle
A miniaturized, mechatronic actuator is integrated into the expandable stem.
Expanding of the stem is initiated by an internal drive system which receives electric
power through high frequency transmission from outside the skin. To start the
lengthening the bone is separated into two segments. The lengthening with callus
distraction (at a rate of approximately one millimeter per day) is followed by the
period of consolidation, during which the newly built bone mass solidifies.
proximal tibia
replacement
with “biological”
growing module
x-ray of a proximal
tibia replacement
Invention
This new type of growing prosthesis based on an idea of PD Dr. R. Baumgart is
developed by a co-operation between implantcast GmbH, Wittenstein intens GmbH
together with the scientific centers of the university hospital, Münster, (Prof.
Winkelmann, PD Dr. Gosheger) and the university hospital, Munich, PD Dr.
Baumgart). Procedures can only performed in close co-operation with the two
scientific centers.

MUTARS ®
Xpand
Lengthening of the prosthesis
The mechanical non-invasive growing modules of the MUTARS ® system based on
the FITBONE ® principle of a telescope actuator in order to lengthen the prosthesis
non-invasive. It leads to a full modular system that can be combined during surgery.
Design principle
A miniaturized, mechatronic actuator is integrated into the MUTARS ® growing
module. Expanding of the module is initiated by an internal drive system which
receives electric power through high frequency transmission from outside the skin.
Elongation is performed with 0.5mm/min.
x-ray of a distal
femoral
replacement with
the “mechanical”
growing module
implantcast GmbH
Lüneburger Schanze 26
D-21614 Buxtehude
phone: +49 4161 744-0
fax +49 4161 744-200
e-mail: info@implantcast.de
internet: www.implantcast.de
Stand 06/05
Distal femur
replacement
with “mechanicall”
growing module