Friday, 14 December 2018

Fractures reduction

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Contacts

Thierry LELOUP - Frédéric SCHUIND - Wissam EL KAZZI - Nadine WARZEE

Project description

The control of the reduction of diaphyseal long bone fractures is usually effected by fluoroscopy which includes several disadvantages : 2D information, distorted images and almost frequent irradiation to the surgical team.

Fix1.jpg

The difficulties encountered during the reduction are mainly due to the use of a two-dimensional device for a 3D problem. A natural solution is thus to replace the fluoroscopy by a navigation system, following and displaying the bone fragments in 3D during the reduction. This task can be easily effected since markers are rigidly fixed to the fragments through the pins.

Two conventional calibrated radiographs of the fractured limb are used : bone fragments contours are determined with a semi-automatic method (modified live-wire) and the intersection of the fragments projection cones allow to construct approached 3D fragments models.

During reduction, the markers are tracked in real time by a 3D localization system. A 3D dynamic view of the fracture can then be displayed.


Fix2.jpg

Related publications

  • Leloup Th., El Kazzi W., Schuind F., Warzée N., Traumatology surgical intervention guided by virtual reality, Proceedings of the 6th IEEE Virtual Reality International Conference, Laval, France, pp 53-59, 2004.
  • Leloup Th., El Kazzi W., Schuind F., Warzée N., Conception of a navigation system controlling the reduction of long bone fractures treated with external fixation, Surgetica’2002 – Computer-Aided Medical Interventions : tools and applications, Grenoble, France, pp 111-116, 2002.
  • Leloup Th., Schuind F., Warzée N., Van Ham Ph., Registration of long bone fragments with anatomical 3D models to control diaphyseal fracture reduction in virtual reality, Proceedings of the 6th International Workshop on Computer Assisted Surgery & Rapid Prototyping in Medicine, Nürnberg, Germany, 2001, Abstract published in : Computer Aided Surgery, Volume 7, Issue 2, p 118, 2002.
  • Van Ham Ph., Leloup Th., Lasudry-Warzée N., Schuind F., Virtual reality based on conventional x-rays, Brussels International Symposium : Diagnostic Imaging of the Shoulder, Elbow and Wrist Joints, Genval, Belgium, p 32, 2000.
  • Leloup Th., Schuind F., Lasudry N., Van Ham Ph., 3D Tracking of bone fragments to control diaphyseal fracture reduction in virtual reality, Proceedings of the 5th International Workshop on Computer Assisted Surgery & Rapid Prototyping in Medicine, Erlangen, Germany, 1999, Abstract published in : Computer Aided Surgery, Volume 5, Issue 1, p 67, 1999.
  • Leloup Th., Schuind F., Lasudry N., Van Ham Ph., Building virtual 3D bone fragments models to control diaplyseal fracture reduction, SPIE Medical Imaging, Vol 3658, pp 315-323, San Diego, USA, 1999.