HIP PRODUCTS

The acetabular FIN II system represent a highly versatile solution with a wide choice of liners and Heads, even large, which are associated with a single metal component, available with or without Cranial fins: FIN II and FIN MB.

Fin II Cup

Hemispherical, allowing global contact between the component and the bone acetabulum.

Three cranial fins for improved primary stability and anti-rotation blocking.

Three holes in the proximal zone of the cup for optional application of 6.5 mm screws. The specially designed screw housings provide axial deviation of up to 15°.

Available in sizes from 44 mm to 64 mm in 2 mm steps.

A polar hole for direct visual inspection of the cup position with respect to the bottom of the acetabulum.

MOONSTONE bipolar cups are mechanically assembled in clean room to guarantee a high level of cohesion between the polyethylene liner and the metal shell, and a perfect cleanliness of the assembly.

MOONSTONE cups are available:

• In a constrained version with a locking ring,
• in inner diameter 28mm
• In “even” outer diameter by bimillimetric increments in sizes 42 to 56 only in version with a locking ring

The MOONSTONE cups are made of stainless steel according ISO 5832-1 (shell) and UHMWPE according ISO 5834-1 & 2.

Originally created in the mid 70’s by Professor Gilles BOUSQUET in St Etienne (France), the dual articulation acetabular socket rationale has kept improving since then, and offers nowadays a comprehensive solution to intra-prosthetic dislocation.

Indicated for primary arthritis patients above 70 years old, for femoral neck fractures whenever the patient is valid and active, for any patient presenting an important hip joint laxity, for patients with irrational behaviour, and for most hip revision cases, the dual mobility concept combines a high level of protection against dislocation and a controlled and well documented polyethylene wear rate.

• CAPTIV DM
• Press-fit only, including an equatorial over-sizing macrostructure with 3 sets of anchoring teeth.

The liners, manufactured in cross-linked polyethylene (PEXEL), provide a positive excentration to the femoral head. This principle which consists in offsetting the center of rotation of the femoral head from that of the liner, limit the contact and wear at the “third articulation” level: between the prosthetic neck and the inner lip of the liner. The positive excentration mechanism forces the liner to remain perpendicular to the femoral neck axis as sons as the body weight is applied through the joint and to the lower limb.

The liners are available for all sizes of cup and an inner diameter of 28mm.

The design rationale of the HACTIV implant is based on the self-blocking concept. The cementless versions are made of titanium alloy and coated hydroxyapatite. The cemented versions are made of high nitrogen content stainless steel and are fully polished.

The cementless self-blocking concept has been validated by over 25 years of clinical use. The main characteristics are an immediate primary stability and a long-term biological secondary fixation.

HACTIV is designed and manufactured in France, and includes the complete EVOLUTIS know-how in the industrial fields of conception and manufacture of cementless femoral implants: more than 40.000 stems implanted since 2001 in France, Europe and the world, with outstanding clinical results.

The stems are available with the following specifications:

• Micro-grooved 12/14 taper.
• Cylindrical fully polished and reduced diameter neck.
• NSA (neck-shaft angle) available in standard (135°) and “lengthened” lateralised (128°) versions.
• Single neck length.
• Choice of collared and collarless versions.
• Unique metaphyseal macrostructure oriented along the dynamic load axis.
• Choice of 2 surface finishes (with and without cement).
• Revision cementless stems available either with distal slots or distal transverse locking.