Cementless acetabular prosthesis WM-Cup™

The cup has a conical outer contour with a flattened pole cap and features a conical right-hand thread. When the cup is implanted, the cutting teeth create a female thread in the surrounding bone tissue and thus ensure a secure implant fit. A polar threaded bore provides access to the natural acetabulum, thus allowing the surgeon to check whether the cup has been screwed in to the correct depth. The corresponding screw plug is used to close the polar hole before inserting the final inlay. The outer surface is blasted grey to promote osseointegration. Properties / technical data Cup material: TiAl6V4 ELI (DIN EN ISO 5832-3) Inlay material: Choice of BIOLOX® delta ceramic (CeramTec GmbH, ISO 6474–2) or XPE (UHMWPE DIN ISO 5834–2) 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 by conservative or joint-preserving surgical procedures Sequelae of previous surgeries (failure of total hip arthroplasty, failure of hemiarthroplasty or osteosynthesis of fractures localised in the proximity of the femoral head and osteotomies in the proximity of hip joint)