POLARSTEM◊ Design
Reinforced proximal section
• Improves metaphyseal stability, assisting in prevention of stem subsidence
Shorter and narrow distal section
• Provides ease of insertion and stem positioning
• Reduces the risk of thigh pain and stress shielding
POLARSTEM◊ System
Product portfolio
• Standard and lateral version available
Instrument set
• Simple and user friendly instrumentation for all surgical approaches
POLARSTEM◊ Offset
• Offset of the lateral stems is increased by 3.5 mm compared to the standard stem to better reconstruct the hip biomechanics
• The lateral stems also have a varus deviation of 2.5 mm in relation to the vertical stem axis to better restore the anatomy and to stabilize the muscle tensor fasciae latae
POLARSTEM◊ Surface structure
Prevention of subsidence
• Beveled, end-to-end grooves perpendicular to the load axis for optimal load distribution
Increased rotational stability
• Distal grooves are in reverse to the rotational axis
POLARSTEM◊ Coating
Excellent primary stability and accelerated osseointegration. The stems are coated with high grade, open-pored pure titanium applied by vacuum plasma spray.
A hydroxyapatite layer is applied to the open-pored titanium plasma coating in the same process step. The result: excellent adhesion.