Sirius canine elbow - post-op radiograph
Note: this image includes a PAUL plate from a previous procedure - this plate is not part of the Sirius system.

Introduction

The Sirius Canine Elbow is a patented total joint replacement system for the treatment of end-stage canine elbow arthritis.

The Sirius was developed by Professor John Innes and Mr. Rob Pettitt at University of Liverpool Small Animal Teaching Hospital, working in collaboration with UK bioengineers.

The first Sirius was implanted in October 2011, and clinical results obtained illustrate its sound design principles, delivering great improvements in mobility, good radiographic results and excellent implant survivorship.

Courses

We run regular courses for veterinary surgeons - please contact us for further details or register your interest here:

Clinical Benefits of the Sirius System

The Sirius implant and instrument system has been designed by UK bioengineers with over 40 years combined experience in the development of implants and instrument systems, in collaboration with leading orthopaedic veterinary surgeons. Key features include:
  • precision instrumentation to ensure accurate and reproducible bone cuts
  • simplified surgical procedure with no requirement for inhibition of radial motion
  • preservation of pronation and supination
  • 3D printed trabecular metal coating on ulnar tray, to promote bone in-growth
  • box cut humeral component and ulnar keel for enhanced stability

Click here for further information on the design features which ensure the long-term clinical success of the Sirius elbow:

Sirius Implants

Sirius resurfaces the damaged articular cartilage of the elbow, thereby preserving bone stock and maintaining the transfer of load to the subchrondral bone (to avoid stress shielding).

The implant comprises three components: a stemmed humeral component, an ulnar tray, and a UHMWPE ulnar bearing. The humeral component is cemented, whilst the ulnar tray is secured with titanium bone screws. The bone-contacting surfaces of the ulnar tray have a 3D printed trabecular metal coating to encourage bone in-growth for long-term fixation.

The Sirius is available in three sizes (small, medium and large) and is non-handed.

Sirius Instruments

Sirius is fully instrumented, to ensure ease and accuracy of the surgical procedure.  All bone-cuts are guided by cutting jigs, with the result that the centre of rotation of the prosthesis matches that of the original elbow.