cranial reconstruction is carried out in a two-part procedure.
Initially, a computer tomography scan image is taken and
an exploratory operation is undergone to create a local
impression of the frontal cranial defect. In the following
two weeks, a cast of the defect is made and a prosthesis
is designed. When the prosthesis is ready, a second operation
is performed and the prosthesis is surgically implanted
into the defect area.
3D Printer Bridges Industrial Design With Medicine
Lederer of the University of Alberta Industrial
Design Division is making miracles,
literally, with his high-speed prototyping research
and his MACI 3D printer. Lederer, who is currently
working in collaboration with Dr J. Wolfaardt
and the Craniofacial Osseointegration and Maxillofacial
Prosthetic Rehabilitation Unit (COMPRU) research
team at the Misericordia Hospital, is making outstanding
breakthroughs that will revolutionize the traditional
approach to surgical reconstructive procedures.
the evasiveness of this multi-operative procedure, much
time and money is expended. Potential infection and
extended recovery of the patient is also a significant
issue. Now, with the technology of the MACI 3D printer,
Lederer and Dr Wolfaardts team have developed
a system that eliminates the need for the initial surgical
procedure. Through information derived from the CT scan,
the team has been able to isolate digital imaging information
to create a replica 3D model of the defect area. From
this model a customized prosthesis can be fabricated
and only one operation is required to insert the prosthesis.
implications of this research program are immense. Patients
will have less chance of infection and shorter recovery
periods. Doctors will be less burdened by time constraints
of multi-operative procedures and will be able to see
more patients in a shorter time frame, reducing patient
waiting lists. Administratively, a decrease in costs
incurred for specialists will be seen and hospital wards
will be more accessible to a greater number of patients.
The potential impact even extends to the area of telehealth
and long distance medicine. Data files of a remote patient
can be sent from afar, and Lederer and the COMPRU group
can analyze the defect and fabricate a custom prosthesis.
The actual operation could be undertaken in the hometown
of the patient thus saving additional direct and indirect
support of the technological resources enabling these
outstanding research breakthroughs is imperative. The
societal implications alone warrant the further sustainability
of such exceptional collaborative efforts.
Wheeler, R. Davoodi, R. Lederer, C. Weiss, K. Natho,
J. Jeon, Y. Bhambhani, & J.R. Steadward. Functional
electrical stimulation assisted rowing for spinal cord
injury: advancement in exercise technologies for the
spinal cord injured, 1999 (submitted for publication).
Lederer, R. Davoodi, B. Andrews, G.D Wheeler. Design
of the ROWSTIM II_ system: Rowing exercise for
spinal cord injured, Department Art & Design
Exhibition, University of Alberta. January 2000.
Wheeler, R. Davoodi, R. Lederer, C.Weiss, J. Jeon, Y.
Bhambhani & R.D. Steadward. FES assisted rowing
for persons with spinal cord injury, Research
Revelations . University of Alberta. February 5,
Lederer. MACI - 3D printer research possibilities,
Research Revelations. University of Alberta.
February 5, 2000.
Lederer Interdisciplanary and Collaborative -Design
Research - Growing a knowledge, Published
in conference proceedings. International Design Symposium,
Politecnico di Milano, Milano, Italy. May 2000.
Lederer, T. Amell. Product Design: Up Front Collaboration
Pays Off in the End. Aging with Attitude,
Canadian Association on Gerontology Conference.
Edmonton, Alberta October 2000.
Sharlin, B. Watson, L. Liu, S. Sutphen, R. Lederer,
P. Figueroa, J. Frazer. The Future of VR and AR
Interfaces: Multi-modal, Humanoid, Adaptive and Intelligent,
to take place at IEEE-VR 2001, Yokohama, Japan,