Ceramic What is ceramic
ceramic materials used in total joints belong to a class of materials called oxide ceramic
The aluminum oxide appears in three forms :
a. gems
b. surgical grade ceramic
c. pottery
Medical grade ceramic Advantages and risks
Alumina ceramic Modern (third generation) alumina ceramic is composed
of very small crystals of aluminium oxide
Zirconia toughened alumina (ZTA) ceramic ZTA ceramic is combinations in microseparation
simulator studies consistently showed lower wear than the alumina used as historical control
Zirconica ceramic Is one of the highest-strengh ceramics suitable for
medical use
OxiniumCreate a thin layer of zirconium oxide on the surface of the
solid zirconium metal
Oxinium materials for total hips
Oxinium for total knee prosthesis
Ceramic for total kneesUse for total knee joints is hampered by two facts :
The total knee joints have not congruent joint surfaces
The femoral component that would sustain the stresses that occur during walking in the knee
Other ceramic materials Hydroxyapatite coating
Other osteoinductive substances