Hipokrat 2000 Revizyon Diz Protezi

Design
• Constrained prosthesis without axle connecting tibial and femoral components (nonhinged)
• Large tibial post and deep femoral box provide
– Varus/valgus stability  
– Rotational stability

Indications
• LCL attenuation or deficiency 
• MCL attenuation or deficiency
• Flexion gap laxity
• Moderate bone loss in the setting of neuropathic arthropathy

Modularity
• Definition
– The ability to augment a standard prosthesis to balance soft tissues and/or restore bone loss
• Options include
– Metal tibial baseplate with modular polyethylene insert  
– Metal augmentation for bone loss
– Modular femoral and tibial stems

Advantages
• Prosthesis allows stability in the face of soft tissue (ligamentous) or bony deficiency
• Ability to customize implant intraoperatively

Disadvantages
• More femoral bone resection
– Necessary to accommodate large box
• Aseptic loosening
– As a result of increased constraint
• Increased rates of osteolysis in modular components