Product Overview
Product Information
Dual-mobility cups were designed to reduce risk of dislocation during full ROM. Dislocation is the leading cause of revision after total hip arthroplasty (THA). The dual-mobility technology was developed, featuring a mobile polyethylene liner locked onto a femoral head and articulating in a metallic acetabular shell. The POLARCUP hip system was designed to address the challenges of treating patients - in both primary and revision cases - who are susceptible to dislocation and need greater stability.
Features and Benefits
The dual mobility design results in higher intra-prosthetic stability to address the treatment of patients with a high risk of dislocation (especially for elderly patients) or patients with recurrent dislocation.
Shell and Liner Features
• Titanium plasma coating 250 μm 15 to 20% porosity
• Pole obliquity oriented in direction of the load resultant for optimal force allocation.
• 6° skirt under ½ sphere equator to avoid dislocation
• Anti-rotation fins allowing Peripheral diffusion of constraints
• Equatorial teeth (0.35 mm) Allows for additional stability
• Self-centering for an equal force transmission
Strong retention insert
• 170 to 200 Kg is necessary to press the femoral
head into the PE-liner
Smoothed entry chamfer parallel to stem neck.
• External rim rounded to avoid conflict with soft tissues.
• Minimum thickness: 6.5 mm for 28/47
Shell Options
• Titanium-Plasma coated
• Stainless steel uncoated (For use with cement only)
Insert Options
• XLPE Mobile Insert
• cPE Mobile Insert
Bearing Options
• OXINIUMâ—Š, Biolox Delta, Cobalt Chrome
(http://www.smith-nephew.com/)
