Table 3: Period of union with different materiel of interposition.

Author

Materiel of interposition

Period of union

Goutallier [14]

Cement spacer

>3 months

Dehoux [15]

tricalcium phosphate substitute

3 months

Bonnevialle [16]

Tricalcium phosphate macro-porous substitute

> 3 months

Koshino [17]

Porous hydroxyapatite non resorbable ceramic substance

4 months with continuous network of bone

Bove [18]

porous inert alumina ceramic spacer

3 months with radiolucent margin around spacer