Zurich cementless total hip replacement: retrospective evaluation of 2nd generation implants in 60 dogs.
Department of Small Animal Surgery, Vetsuisse Faculty, University of Zurich, Winterthurerstrasse 260, Zurich, Switzerland. firstname.lastname@example.org
OBJECTIVE: To evaluate the results of application, and identify complications, of the 2nd generation of Zurich Cementless Total Hip Replacement (ZCTHR). STUDY DESIGN: Case series. ANIMALS: Client-owned dogs (n=60) that had ZCTHR (n=65). METHODS: Dogs with ZCTHR (2001-2003) with a minimum follow-up > or =6 months were evaluated.
Descriptive histomorphometric ingrowth analysis of the Zurich cementless canine total hip acetabular component.
Department of Veterinary Clinical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA, USA.
OBJECTIVES: To (1) determine bone contact with the outer surface and ingrowth into the perforated outer shell of the Kyon acetabular component at 2, 6, and 12 months after total hip replacement (THR) and (2) determine correlation between radiographic lucency surrounding the cup-bone interface and bone contact and ingrowth. STUDY DESIGN: Experimental
Influence of canal preparation depth on the incidence of femoral medullary infarction with Zurich Cementless Canine Total Hip arthroplasty.
Affiliated Veterinary Specialists, Maitland, FL 32751, USA. email@example.com
OBJECTIVE: To determine the incidence of femoral medullary infarction after modifying the depth of femoral reaming and filing when performing total hip replacement (THR) using the Zurich Cementless Total Hip Replacement system (ZCTHR). STUDY DESIGN: Case series. ANIMALS: Dogs (n=31) that had ZCTHR (34). METHODS: Thirty-one dogs (34 THR) had…
Monterey Peninsula Veterinary Surgical Service, Carmel, CA, USA.
OBJECTIVE: To document the prevalence of femoral medullary infarction associated with the Zurich Cementless Total Hip Replacement (ZCTHR) system in dogs. STUDY DESIGN: Case series. ANIMALS: Dogs (n=35) with 41 ZCTHR implants. METHODS: Medical records (February 1999-December 2002) were reviewed for dogs that had ZCTHR and at least 1 year follow-up with radiographic evaluation. Thirty-five dogs (41 ZCTHR) met the inclusion criteria. Femoral morphologic data…
Incidence of pulmonary embolism after non-cemented total hip arthroplasty in eleven dogs: computed tomographic pulmonary angiography and pulmonary perfusion scintigraphy.
Affiliated Veterinary Specialists, Maitland, FL 32751, USA.
OBJECTIVE: To compare the incidence of pulmonary embolism (PE) in 11 dogs that had non-cemented total hip replacement (THR) to that reported in dogs after cemented THR. STUDY DESIGN: Prospective clinical study. ANIMALS: Large mixed breed dogs (n=11). METHODS: Thoracic computed tomographic pulmonary angiography (CTA) was performed on all dogs pre- and postoperatively. Pulmonary…
Affiliated Veterinary Specialists PA and Central Florida Veterinary Radiology PA, Maitland, 32751, USA.
OBJECTIVE: To radiographically evaluate the Zurich cementless total hip (ZCTH) cup and correlate lucency with clinical signs of implant instability, time since surgery, and implant generation, using zonal analysis. STUDY DESIGN: Retrospective study. ANIMALS: Client-owned dogs (n = 53). METHODS: Radiographs of dogs that had ZCTH arthroplasty (>1 year) were…
Annual Report 2005, The Swedish National Hip Arthroplasty Register, Department of Orthopaedics, Sahlgrenska University Hospital
Department of Orthopaedics, Sahlgrenska University Hospital
The national quality registers are facing major changes when it comes to openness, the role of principals, financing and the increasing call for standardised information structures and internet applications. There are a number of reasons why the National Hip Arthroplasty Register is now entering a new era. Its…
Assessing the dog as a model for human total hip replacement. Analysis of 38 canine cemented femoral components retrieved at post-mortem.
Department of Engineering, Baylor University, Waco, Texas 76798-7356, USA.
Post-mortem retrieval of canine, cemented femoral components was analysed to assess the performance of these implants in the dog as a model for human total hip replacement (THR). Mechanical testing and radiological analysis were performed to determine the stability of the implant and the quality of the cement. Thirty-eight implants from 29 dogs were retrieved after time…
Zurich, November 2004
“Zurich Cementless” canine THR, commercialized by Kyon AG, Zurich, was introduced to broad clinical use in February 1999, after 6 years of development (and 160 clinical cases) by Tepic and Montavon at the School of Veterinary Medicine, University of Zurich. Total number of prosthesis implanted until the autumn of 2004, is about 3’000, by over 100 surgeons.
School of Veterinary Medicine, U. of Zurich, Zurich, Switzerland
E.S.V.O.T. September 2004, Munich
Zurich Cementless provides for an immediate and indefinitely stable anchorage of the prosthetic components by resolving two, partially coupled problems: (i) load-induced movement at bone-implant interfaces; (ii) stress shielding of the bone, particularly by conventional, stemmed, femoral components. Bone cement in a Charnley-type Total Hip Replacement (THR) accomplishes both: stability of the…
Baylor University, Department of Engineering, PO Box 97356, Waco, TX 76798, USA.
Dogs are the preferred animal model for testing of human total hip replacements (THRs). A postmortem retrieval program for clinical, cemented, canine THR was established to analyze the long-term performance of THRs in dogs and to compare that performance to postmortem retrievals of human THRs. The purpose of the present study was to analyze the interaction between the…
Gulf Coast Veterinary Specialists, 1111 West Loop South, Houston, TX 77027, USA.
OBJECTIVE: To report femur fracture as a complication of canine total hip replacement (THR) and to report the incidence, predisposing factors, treatment options, and outcome. STUDY DESIGN: Prospective clinical study. ANIMALS: Twenty-two client-owned dogs with 24 femoral fractures occurring during or after THR. METHODS: Cemented THR (BioMedtrix, Boonton, NJ) was…
Zurich Cementless – a new concept in canine total hip replacement Principles of anchorage, surgical technique and results after five years of clinical experience
School of Veterinary Medicine, University of Zurich
In just over three decades, total hip replacement (THR) has changed the practice of orthopedic surgery, has created a whole new industry to support it and, most importantly, has improved quality of life of millions of patients to the extent unparalleled by any single procedure in the history of surgery. All of this was made possible with the advent of cemented THR. In human surgery, within the first decade following…