With its second generation of Advanced Locking Plate System, Kyon continues to expand its contributions to veterinary surgery based on a unique synthesis of decades-long research and clinical efforts to reduce iatrogenic damage in anchoring implants to bone.
Deceivingly inert in appearance, bone undergoes constant remodeling, replacing all of a skeleton several times over in a lifetime. This endows bone with ability to continually repair not only minute fatigue cracks but also fractures and surgical osteotomies. Crucially important to this process is blood perfusion of bone tissue down to the capillary bed, all interconnected to major blood vessels of the periosteum and endosteum. Disruption of blood perfusion on either side of cortex leads to bone death. Dead bone cannot heal nor fight off bacterial intrusion – infections are the most serious clinical complications of orthopedic and trauma surgery.
All Kyon procedures and implants have been designed with an absolute focus on helping the surgeon to reduce the level of damage to blood perfusion and thus the risk of infection.
Kyon Locking System – KLS – is central to this objective.
KLS provides for a safe, consistent, fretting-free load transfer between bone screws and implants. KLS screws are dimensioned for use in toy to giant breed dogs, in cats and in exotic animals.
The screws are organized in either Kyon Sterilization System trays or in new, KLS screw racks. KLS screw racks are made of titanium alloys, holding the screws with minimal contact, but safe enough to be handled in cleaning, sterilization, and transport.
All KLS screws are manufactured from a titanium-aluminum-niobium alloy of superior strength and exceptional biocompatibility. Purple anodization distinguishes these screws from any other screws in the Kyon portfolio. Screwdriver recesses are Torx-type. The cutting flutes of KLS screws are meticulously designed and manufactured to the highest quality standards providing very low, consistent insertion torque, with clean-cut threads.
ALPS-II plates rely on KLS for safe application in fracture fixation. Proprietary, unique geometrical features of all ALPS plates reduce the maximum contact to the bone to only very small areas necessary to support the plate against the bone until the conical screw heads are fully seated in the plate holes. The self-locking pairing of the screws and the plates has been carefully analyzed and engineered to minimize the risk of cold welding. As in the first-generation ALPS, the plates of the ALPS-II system can be contoured in both planes. ALPS-II plates are manufactured from a pure, grade 4 titanium for the best combination of ductility and strength.
Surface treatment includes micro-peening with zirconia for increased fatigue strength – the resulting surface is silk-smooth of natural, titanium color.
ALPS-IIS plates are made from a titanium alloy for extra strength in challenging fractures. Color-coded with green anodizing as for all other titanium-aluminum-vanadium implants, ALPS-IIS do not require special instrumentation.
Locking screws of KLS with conical heads can be augmented with spherical beads facilitating insertion of angulated screws. The beads also allow dynamic compression across the fracture line in rare instances when this is possible.
High stability and reliable load transfer of KLS allows for preferable use of mono-cortical screws. Years of research carried out at the AO Research Institute in Davos from the late seventies to mid-nineties, have demonstrated many benefits – some of them unexpected – of minimizing disturbance of blood perfusion.
Over 50 years of combined clinical use of Zurich Cementless THR, ALPS, PAUL, DPO and TPLO in over 50’000 surgeries suggest that infection rate of less than 1% should serve as a benchmark of proper surgical orthopedic and trauma care.
KLS now unifies most of Kyon implant systems: Zurich Cementless THR, ALPS-II, ALPS arthrodesis plates, PAUL II, DPO, and TPLO.