EFFECT OF CEMENTLESS-ORTHOPAEDIC STEM DESIGN ON FEMUR STRESS-SHIELDING

Document Type : Original Article

Authors

1 Egyptian Armed Forces.

2 Professor of orthopaedics, Faculty of medicine, Ain-Shams Univ., Cairo, Egypt.

Abstract

ABSTRACT
Total joint replacement has become a widely accepted treatment for many
destructive joint diseases including osteoarthritis and severe pathologic fractures. Of
total joint replacements, the hip is one of the most commonly replaced joints. Hip
stem design varies from long to short, thick to thin and matt to smooth. In this study
the effect of hip stem length on bone remodeling after surgery which is known as
stress-shielding effect was analyzed using a finite element technique. Results show
that stress-shielding introduced when using long-stem hip is much more than that of
using short-stem hip in a total hip replacement for cementless implant.

Keywords