The Klassic® BiPolar System is a simple and reliable prothesis for hemiarthroplasty. Composed of the Klassic BiPolar Head and the BiPolar Femoral Heads, the Klassic BiPolar System is compatible with Klassic Blade or Klassic HD® Femoral Hip Stems. Klassic BiPolar Head sizes start at 41mm and increase in 1mm increments through 56mm, with 58mm and 60mm also available. BiPolar Femoral Heads are offered in 22mm and 28mm diameters with multiple head lengths.