Cementless acetabular prosthesis Versafitcup® DM

The Versafitcup Double Mobility is based on the original Dual Mobility design developed by Prof. Bousquet and the Medical School of St. Etienne, France, back in 1976.With more than 30 years of successful clinical history this concept is widely used in Europe and in particular in France, where it represents about 25% of the primary hip cup market. With the introduction of the Highcross Double Mobility liner, the Versafitcup can be considered a valid alternative to hard/hard big head articulation. DUAL MOBILITY - Articulation Liner/Shell DUAL MOBILITY - Articulation Head Liner THIRD ARTICULATION - Articulation Neck/Liner WHY CHOOSE A DOUBLE MOBILITY CUP? Better than standard fixed liner cups: Low wear rate thanks to the Dual Mobility and Third Articulation. Low dislocation rate thanks to increased head diameter. High Range of Motion (ROM) thanks to increased head/neck ratio. The question of a potential UHMWPE wear increase due to the double articulation has been raised, and clinical follow up from more than 30 years on similar systems has been reassuring. Additionally the dynamic mechanism of action is becoming more understood. The Dual Mobility and Third Articulation concepts are responsible for the low wear rate of the Versafitcup Double Mobility: Head/Liner Articulation (80% of the time) A1 is always smaller than A2 and under physiological loading conditions, A1 is the first to be mobilized up to contact of stem neck with UHMWPE liner rim. Liner/Shell Articulation (20% of the time) Only when the stem neck enters into contact with the rim of the liner, A2 starts to move. The rim of the liner is chamfered to articulate with polished neck (Third Articulation concept)