Metallurgy of Cement-less T.H.R

Document Type : Original Article

Author

Maj. Gen. Dr., Commandant of Helmia Orthopedic Army Hospital.

Abstract

Abstract:
Cementless THA represents the biological fixation of hip implants via
micro-mechanical interlock in the host bone. It is mainly indicated in young
active patients with high demands and in revision THA to avoid inserting a
revision stem in dead materials. Knowledge of basic metallurgic terms is
essentially in cementless in THA. The stress strain diagram showing elastic
and plastic range of deformation is essentially for good understanding of
cementless THR. Also in comparison of mechanical properties of materials
used in THA including modulus of elasticity and fatigue strength is an
essential item in choosing the best material for implants used in cementless
THA.