Femoral head prosthesis BioBall® Duo

The BioBall® Duo Head is a bipolar head with the outer shell, the inlay and the inner head pre-assembled. Good acetabular tissue quality is a prerequisite for bipolar head implantation, as it serves as an articulation partner for the metal cup. Combination with the BioBall® Adapter enables intraoperative correction of offset, neck length, lateralisation/medialisation and antetorsion/retrotorsion. Properties / technical data Usable in natural acetabulum with residual connective tissue Mirror polished outer cup with inlay and pre-assembled, freely movable BioBall® Metal Head Compatibility with BioBall® adapters allows intraoperative correction of neck length, medialisation/lateralisation and correction of retro- or antetorsion * Vivium® is a registered trademark of Merete GmbH (High Nitrogen Stainless Steel DIN ISO 5832-9). Indications Advanced wear of the proximal femur due to degenerative, post-traumatic or rheumatic diseases with well-preserved acetabulum, including medial femoral neck fractures and advanced avascular necrosis of the femoral head, which cannot be treated using conservative or joint-preserving surgical procedures Hemiarthroplasty in osteosynthetic untreated femoral neck fractures