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Components of the Signature Orthopaedics hip replacement range are intended to replace a hip joint where bone stock is sufficient to support the implant. When a surgeon has selected prosthetic replacement as the preferred treatment, the devices are indicated for: - Non-inflammatory degenerative joint disease including osteoarthritis or avascular necrosis - Inflammatory joint disease including rheumatoid arthritis - Correction of functional deformity including congenital hip dysplasia - Traumatic injury involving the hip joint including traumatic arthritis or femoral head or neck fracture - Failed previous hip surgery including internal fixation or joint fusion, reconstruction, hemiarthroplasty, surface replacement, or total replacement Signature Orthopaedics' Origin, NEO-T, Remedy and Pegasus femoral stems, and Logical acetabular cups are intended for cementless fixation only. Signature Orthopaedics' Evolve femoral stems are intended for cemented fixation only. Signature Orthopaedics' BiPolar Head is intended for hemi-hip arthroplasty only, where the natural acetabulum does not require replacement. The BiPolar Head is indicated for bone fractures or pathologies involving only the femoral head/neck and/or proximal femur, such as: - Acute femoral head or neck fracture - Fracture dislocation of the hip - Avascular necrosis of the femoral head - Non-union of femoral neck fractures - Certain high subcapital and femoral neck fractures in the elderly - Degenerative arthritis involving only the femoral head

The Remedy™ and Pegasus™ hip stems are intended for cementless use in total hip arthroplasty. The Evolve™ hip stem is intended for cemented total hip arthroplasty. The Remedy™, Pegasus™ and Evolve™ hip stems connect to a femoral head (cobalt-chrome alloy or ceramic) via 12/14 taper connection. The Remedy™ Hip Stem has a tapered wedge geometry. The stem is manufactured from titanium alloy per ASTM F136. The proximal stem is porous coated with titanium beads and particles per ASTM F67 and the distal stem is matte finished. The Pegasus™ is a double tapered, straight stem with rectangular cross-section. The stem has a lateral wing for engaging the greater trochanter. The stem is manufactured from titanium alloy per ASTM F136. The stem is grit blasted below the resection line. The Evolve™ Hip Stem is a highly polished, tapered wedge stem with a rounded crosssection. The Evolve™ Hip Stem is manufactured from high nitrogen stainless steel per ISO 5832-9. The Evolve™ Hip Stem is available in two variants, the Masters series and the Helios Series. Both variants share similar general geometry but are sized differently to provide a more complete range. The Evolve™ Hip Stem includes two accessories, the Evolve™ Distal Centralizer and Evolve™ Cement Plug. The Evolve™ Distal Centralizer is a PMMA cap that sits on the end of the Evolve™ Hip Stem and centralizes it within the femoral canal. The Evolve™ Cement Plug is manufactured from polyethylene per ASTM F648 and is pressed into the femoral canal prior to inserting the Evolve™ Hip Stem to allow cement pressurization. The BiPolar Head consists of a stainless steel outer shell (per ISO5832-9) and a UHMWPE insert (per ASTM F648). The outer shell is highly polished to articulate against the patient's natural acetabulum. The insert articulates against a Signature Orthopaedics 28mm cobalt-chrome femoral head (K121297). The 28mm femoral head connects to a femoral stem from Signature Orthopaedics' range to complete the hip hemiarthroplasty.