Use of the extensor retinaculum as a donor site for bone-ligament-bone grafts.

The recent introduction of bone-ligament-bone grafts for ligament reconstruction in hand surgery has led to a search for suitable graft donor sites. The extensor retinaculum had been suggested, but harvesting details were still lacking. We therefore studied the anatomy of the extensor retinaculum, with radiography and morphometric measurements.

[Biomechanical evaluation of osteosynthesis with cannulated screws for Ponteau-Colles fractures in a bird model].

Introduction: The use of cannulated screw without protrusive head in Colles fractures could avoid some of the drawbacks of conventional pinning. In order to compare the mechanical resistance of Kirshner wires versus cannulated screws we designed a animal model of Colles fractures and tested three types of osteosynthesis: A: K-wires, B: Herbert cannulated screw, C: specific cannulated screws.

Method: After creating a 10 mm defect in three sets of 10 fresh turkey tibia, 3 types of osteosynthesis were done and tested in compression with an Adamel Lhomargy machine: set A: K-wire fixation, set B: Herbert screws fixation and set C: specifics screws fixation.