Total hip replacement surgery removes and replaces both the ball and socket of the hip with prostheses. Various hip replacements systems are available on the market, which include metal or ceramic balls at the top of the femur that fits into a cup. The prostheses are generally held in place using bone cement or screws, which are referred to as ‘cementless’ implants.
“Replacement of the hip is the only permanent, satisfactory form of treatment of canine coxofermoral osteoarthritis. Increasingly, use of cementless prosthesis is becoming the method of choice.“ D. Koch and M. S. Fischer, Diagnosing Canine Lameness, 2020, Thieme
Zurich Cementless Hip Replacement System
The Zurich Cementless hip replacement system features some unique design elements, which makes it the most advanced hip replacement system on the market.
Simplicity and Versatility
Zurich Cementless includes a wide range of sizes for THR for toy to giant breed dogs, but also a unique solution for high luxation risk patients (Dual Mobility), a partial hip replacement system (Cupless), and revision cups for the THR systems.
A wide range of medullary canal dimensions can be covered by a minimal set of stems.
Modular system to combine different sizes of stems, necks, heads, and cups to comfort your patient anatomical needs perfectly.
Locking screw technology eliminates micromotion of the femoral component.
The stem is affixed to the medial cortex only, preventing the stress-shielding of the proximal femur and allowing the implant to grow with the femoral bone structure.
A hydroxyapatite surface modification of the stem and cup promotes rapid bone integration.
THR
The Zurich Cementless THR is designed to relieve chronic joint pain and provide a fully functional recovery. Over the last 20 years, more than 20,000 dogs worldwide have been treated with the Zurich Cementless hip replacement system. Until today, the system has gone through multiple iterations aiming to improve the long-term performance of the device.
Resistance to wear
Resistance to wear is achieved by optimal material selection and proprietary design. The ceramic head and CFR-PEEK cup pairing are proven to reduce wear particles and therefore decrease the risk for revision.
6th generation Zurich Cementless THR
KYON is the first company offering ceramic heads for veterinary THR. Advanced ceramic heads are made of Zirconia Toughened Alumina, a material extensively used in human orthopedics and known for its extreme hardness, toughness, and biocompatibility
Titanium and titanium alloy for supreme biocompatibility and reduced risk of infection
Proprietary, wear-reducing geometry for the PEEK and CFR-PEEK inlay
Porous titanium and hydroxyapatite coating for rapid integration
Cementless – Immediate fixation of the implant through advanced locking screw technology reduces the risk of aseptic loosening associated with cemented implants
Stable fixation of the cup
Double titanium shell, the outer one perforated and plasma coated with titanium and hydroxyapatite promotes rapid bone ingrowth.
Geometrical features of the outer shell and calibrated reaming of the acetabulum allow for a reliable press-fit to provide stability during bony ingrowth.
Outer shells are highly compliant, preventing the stress-shielding of the cancellous bone bed yet providing for the stable anchorage of the inner shells and the composite PEEK inlays.
Freedom to orient the cup position according to the natural acetabulum.
Safe
Titanium alloy used for the stems, cups, and screws is highly biocompatible and reduces the risk of infection and thus implant loosening.
VERILOX® advanced ceramic heads are made of Zirconia Toughened Alumina, a material extensively used in human orthopedics and known for its extreme hardness, toughness, and biocompatibility.
Mini THR
The Mini THR System includes all Zurich Cementless THR parts which are compatible with stem sizes 3mm – 6mm.
It allows the treatment of cats and toy/mini breed dogs with bodyweight ranging from 2kg-15kg.
The technology for the mini THR system is identical to the standard sizes:
Immediate fixation is achieved through locking screw technology
Resistance to wear is achieved by optimal material selection and proprietary design.
Modular system to combine different sizes of stems, necks, heads, and cups to fit your patient perfectly.
Due to the size of these implants, we recommend this procedure primarily to advanced THR surgeons. To learn more about prerequisites visit the THR education pathway and program.
Dual Mobility Cup
Extra safety for high luxation risk patient with the Dual Mobility cup
For dogs at a high risk of post-surgical luxation, the Dual Mobility cup and head articulation provide yet another option for minimizing postoperative complications.
Approximately 1 out of 6 patients are at high luxation risk, typically large dogs.
Ceramic 19 mm head preassembled inside the 25 mm PEEK articulating head
2 Cup sizes available: 29mm and 32mm. Both available as pressfit or revision (fixation with screw) style.
Important: The Zurich Cementless Dual Mobility Cup is a special solution intended only for high luxation risk patients. Therefore, it needs to be used with great caution, especially in younger patients, as the wear is typically higher than the one of a standard Zurich Cementless THR.
While there may be other THR solutions for veterinary available on the market that state they are compatible with KYON, the successful outcomes of mixing implant solutions from multiple brands has not been evaluated long-term or in clinical settings and is not recommended. We recommend you use a total solution from KYON.
Are you looking for sizes, item numbers or required instruments or screws? Please download our catalog.
Veterinary Surgery. 2021; 1–11. doi: 10.1111/vsu.13605 1 University of Prince Edward Island, Atlantic Veterinary College, Charlottetown, Canada 2 University of Minnesota, College of Veterinary Medicine, St Paul, MN
Vet Comp Orthop Traumatol, 2021 Mar 31. doi: 10.1055/s-0041-1725015 1 Department of Small Animal Clinical Science, VA-MD Regional College of Veterinary Medicine, Blacksburg, Virginia, United States 2 Clinica Veterinaria Vezzoni, Cremona, CR, Italy
VCOT Open 2023;6:e22–e36 2021 1 Clinica Veterinaria Vezzoni, Cremona, CR, Italy 2 KYON AG, Zurich, Switzerland 3 Department of Small Animal Clinical Science, VA-MD Regional College of Veterinary Medicine, Blacksburg, Virginia, United States
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