A unique combination of modular revision hip prosthesis with locking intramedullary nail. The Cannulok® Plus Revision System is available as a CE marked product 'Off the Shelf' as well as a custom solution.

Clinical Indications:

• Management of the grossly deficient proximal femur as a result of osteolysis
• Reinforcement of the femur where bone stock is depleted as a result of previous surgery
• Periprosthetic fractures around both total hip and hemiarthroplasty implants
• Femoral fractures and fractures around the trochanteric region complicated by metastatic bone disease
• Intraoperative fracture of the femur during hip arthroplasty

Note: Use of an anatomical prosthesis is particularly indicated in situations where the femur remains intact and there would otherwise be a risk of perforating the anterior distal femoral cortex with any straight component.

Custom Solutions

The operative technique is simplified by design features which give the surgeon a degree of comfort in this difficult surgical area.

• Cannulated reamers prepare the femur for the intended prosthesis
• Cannulated rasps ensure proximal profiling for press fit
• Cannulated trials allow impaction grafting to be considered
• Modular head components allow trial reduction to assess stability
• Distal targeting device facilitates placement of up to three locking screws (use of an image intensifier should be considered especially when implanting longer, slimmer stems)
• Distal locking screws have been designed specifically for the Cannulok® Plus implant and have a shallow thread profile with self tapping flutes.  This configuration achieves a balance of strength in both screws and femoral stem and eases insertion allowing for minor variations in alignment

The Cannulok® Plus Advantages:

• Closed procedure with standard guide wire technique helps preservation of blood supply with improved conditions
• Smaller exposure leads to reduced blood loss and reduced risk of infection
• Reduced soft tissue damage enables earlier mobilisation
• Fixation of the distal fragment controls rotation and shortening with earlier and more secure ambulation
• Multiple revision operations inevitably lead to the loss of proximal bone stock, particularly when associated with cement removal. The Cannulok® Plus solution allows effective distal fixation allowing recovery of proximal bone stock over time.  Apposition fit at the isthmus with a fully HA coated prosthesis provids an elegant solution to this problem
• Periprosthetic femoral fractures below rigid metal hip prostheses are an increasing problem. Treatment with a conventional long stem prosthesis is less than satisfactory, due to the difficulties in guiding the stem through the fracture site during insertion and the problems of stabilising the distal femur without introducing bone cement around the fracture which comprises bony union
• Primary proximal femoral fractures may present similar problems when treated with a conventional hip prosthesis or cause concern over survival of the femoral head when treated by intramedullary nailing or internal fixation alone

 Download Cannulok® Plus Femoral Reinforcement PDF