Features & Benefits:The Trident System is a complete system that features: 
    1.Cluster or solid-back shells ;
    2.A secure locking mechanism ;
    3.Hydroxylapatite coating options; 
    4.Bearing surface options ;
    5.Eccentric and constrained options ;
    6.Tritanium fixation options ;
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 Trident Ceramic Acetabular System with Omnifit HA Femoral Stem  | 
 Trident Ceramic Acetabular System with Accolade TMZF Femoral Stem  | 
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 Trident Ceramic Acetabular System with Omnifit HA Femoral Stem  | 
 Trident Acetabular Shell  | 
References
1. Ceramic-on-Ceramic Total Hip Arthroplasty Early Dislocation Rate.Clin Orthop Relat Res. 2007  19;