Computer-Assisted Resection and Reconstruction of Pelvic Tumor Sarcoma

Pelvic sarcoma is associated with a relatively poor prognosis, due to the difficulty in obtaining an adequate surgical margin given the complex pelvic anatomy. Magnetic resonance imaging and computerized tomography allow valuable surgical resection planning, but intraoperative localization remains hazardous. Surgical navigation systems could be of great benefit in surgical oncology, especially in difficult tumor location; however, no commercial surgical oncology software is currently available. A customized navigation software was developed and used to perform a synovial sarcoma resection and allograft reconstruction. The software permitted preoperative planning with defined target planes and intraoperative navigation with a free-hand saw blade. The allograft was cut according to the same planes. Histological examination revealed tumor-free resection margins. Allograft fitting to the pelvis of the patient was excellent and allowed stable osteosynthesis. We believe this to be the first case of combined computer-assisted tumor resection and reconstruction with an allograft

Selection of massive bone allografts using shape-matching 3-dimensional registration

Background and purpose Massive bone allografts are used when surgery causes large segmental defects. Shape-matching is the primary criterion for selection of an allograft. The current selection method, based on 2-dimensional template comparison, is inefficient for 3-dimensional complex bones. We have analyzed a 3-dimensional (3-D) registration method to match the anatomy of the allograft with that of the recipient

Particularités des fractures de l’enfant

Particularités des fractures de l’enfan

Fractures diaphysaires du fémur, du tibia et de l’humérus de l’enfant

Fractures diaphysaires du fémur, du tibia et de l’humérus de l’enfan

Démarche en rotation interne et en rotation externe

Dans ce chapitre, nous allons aborder les causes les plus fréquentes de démarche en rotation interne et externe chez l’enfant

Dysplasie du développement de la hanche de l’enfant

Dysplasie du développement de la hanche de l’enfan

Le rhume de hanche et le diagnostic différentiel avec l’arthrite septique

Le rhume de hanche et le diagnostic différentiel avec l’arthrite septiqu

Fractures des 2 os de l’avant-bras de l’enfant

Fractures des 2 os de l’avant-bras de l’enfan

Treatment of large diaphyseal bone defect of the tibia by the “fibula pro tibia” technique : application in developing countries.

Treatment of large diaphyseal bone defect of the tibia by the “fibula pro tibia” technique : application in developing countries