Dual mobility canine total hip prosthesis: Implant characteristics and surgical procedure

2012 ◽  
Vol 25 (06) ◽  
pp. 506-510 ◽  
Author(s):  
A. Autefage ◽  
S. Palierne ◽  
T. Dembour ◽  
J.-L. Chancrin ◽  
P. Guillaumot
Keyword(s):  
High Risk ◽  
Acetabular Component ◽  
Hip Replacement ◽  
Surgical Procedure ◽  
Hip Prosthesis ◽  
The Other ◽  
Total Hip Prosthesis ◽  
Dual Mobility ◽  
Prosthetic Head ◽  
Acetabular Components

SummaryProsthetic dislocation is one of the most common complications after canine hip replacement. The use of dual mobility acetabular components has been shown to reduce the rate of dislocation in first intent hip replacement in human patients who are at high risk for dislocation. In such implants, a mobile polyethylene liner articulates on one side with a metallic acetabular component and on the other side with a metallic prosthetic head. A dual mobility cemented acetabular component has been designed for use in dogs, and is available for use in association with a previously designed modular femoral component. This report describes the characteristics and the procedure for implantation of this implant combination.

Use of a DeVita Pin to Maintain Reduction of a Dislocated Total Hip Prosthesis in a Dog

1999 ◽  
Vol 12 (02) ◽  
pp. 85-87 ◽  
Author(s):  
D. J. Marcellin-Little ◽  
S. C. Roe ◽  
J. M. Marti
Keyword(s):  
Acetabular Component ◽  
Open Reduction ◽  
Hip Prosthesis ◽  
Labrador Retriever ◽  
Total Hip Prosthesis ◽  
Total Hip ◽  
One Year ◽  
Traumatic Incident ◽  
Acetabular Components

SummaryA two-year-old, female spayed Labrador Retriever with bilateral coxofemoral osteoarthritis received an uncemented total hip prosthesis in her left hip. The acetabular component was positioned in a slightly anteverted position. Five weeks after implantation, following a traumatic incident, the prosthetic hip dislocated without disruption of the femoral or the acetabular components. An open reduction of the luxation was performed, followed by a capsulorraphy and placement of a DeVita pin to secure the reduction. The pin migrated cranially to the epaxial musculature and was removed four weeks after its placement. One year after placing the DeVita pin, a followup examination found the animal not to be lame and without any physical or orthopaedic abnormalities.A DeVita pin was used to maintain reduction of a traumatically dislocated uncemented total hip prosthesis, five weeks after implantation.

The effect of cemented acetabular component geometry on the risk of revision for instability or loosening

2021 ◽  
Vol 103-B (11) ◽  
pp. 1669-1677
Author(s):  
Hiren M. Divecha ◽  
Terence W. O'Neill ◽  
Mark Lunt ◽  
Tim N. Board
Keyword(s):  
Acetabular Component ◽  
Posterior Wall ◽  
Revision Thas ◽  
Joint Registry ◽  
Binomial Regression ◽  
Prosthetic Head ◽  
Group A ◽  
American Society ◽  
American Society Of Anesthesiologists ◽  
Acetabular Components

Aims To determine if primary cemented acetabular component geometry (long posterior wall (LPW), hooded, or offset reorientating) influences the risk of revision total hip arthroplasty (THA) for instability or loosening. Methods The National Joint Registry (NJR) dataset was analyzed for primary THAs performed between 2003 and 2017. A cohort of 224,874 cemented acetabular components were included. The effect of acetabular component geometry on the risk of revision for instability or for loosening was investigated using log-binomial regression adjusting for age, sex, American Society of Anesthesiologists grade, indication, side, institution type, operating surgeon grade, surgical approach, polyethylene crosslinking, and prosthetic head size. A competing risk survival analysis was performed with the competing risks being revision for other indications or death. Results The distribution of acetabular component geometries was: LPW 81.2%; hooded 18.7%; and offset reorientating 0.1%. There were 3,313 (1.5%) revision THAs performed, of which 815 (0.4%) were for instability and 838 (0.4%) were for loosening. Compared to the LPW group, the adjusted subhazard ratio of revision for instability in the hooded group was 2.31 (p < 0.001) and 4.12 (p = 0.047) in the offset reorientating group. Likewise, the subhazard ratio of revision for loosening was 2.65 (p < 0.001) in the hooded group and 13.61 (p < 0.001) in the offset reorientating group. A time-varying subhazard ratio of revision for instability (hooded vs LPW) was found, being greatest within the first three months. Conclusion This registry-based study confirms a significantly higher risk of revision after cemented THA for instability and for loosening when a hooded or offset reorientating acetabular component is used, compared to a LPW component. Further research is required to clarify if certain patients benefit from the use of hooded or offset reorientating components, but we recommend caution when using such components in routine clinical practice. Cite this article: Bone Joint J 2021;103-B(11):1669–1677.

Polyethylene Wear in Retrieved Canine Acetabular Components

2000 ◽  
Vol 13 (02) ◽  
pp. 78-86 ◽  
Author(s):  
D. Tompkins ◽  
B. Bhushan ◽  
M. L. Olmstead ◽  
J. Dyce
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Total Hip Replacement ◽  
Acetabular Component ◽  
Hip Replacement ◽  
Polyethylene Wear ◽  
Total Hip ◽  
Particulate Debris ◽  
Acetabular Components ◽  
Scanning Electron

SummaryThe aim of this pilot study was to define the mechanism and mode of polyethylene wear in acetabular components retrieved from seven dogs following therapeutic total hip replacement. The articular surface of each acetabular component was examined using contact profilometry and scanning electron microscopy (SEM). Peak-tovalley distance (P-V) and arithmetic average surface roughness (Ra) were calculated for each quadrant of the surface. Deformation of the regular profile of the machining lines was the least severe form of surface alteration. Randomly orientated scratches, fine tapered filaments, ripples, and coarse surface shredding were common SEM observations. Gouging of the convex surface of the cup was seen in two cases following failure of the polyethylenecement interface. Wear of the nonarticular acetabular rim suggested neck impingement in one case. P-V and Ra were significantly lower in the craniodorsal zone, compared to the average roughness of the other three quadrants (p < 0.05). Abrasion, adhesion and fatigue were the principal mechanisms of polyethylene wear, and were implicated in the production of polyethylene particulate debris. Meticulous removal of abrasive third bodies at the time of surgery, and correct orientation of the acetabular component, should reduce early and severe wear.Polyethylene wear is inevitable following metal-on-polyethylene total hip replacement. In this study, the nature of polyethylene wear in retrieved canine acetabular components was defined, using contact profilometry and scanning electron microscopy. Abrasion, adhesion and fatigue were the principal mechanisms of wear, and were implicated in the production of polyethylene particulate debris.

Wear Failure Analysis of UHMWPE Acetabular Cups in THR

2019 ◽  
Vol 957 ◽  
pp. 417-426
Author(s):  
Corneliu Nicolae Druga ◽  
Ileana Constanta Rosca ◽  
Radu Necula
Keyword(s):  
Femoral Component ◽  
Total Hip Replacement ◽  
Acetabular Component ◽  
Hip Replacement ◽  
Hip Prosthesis ◽  
Polyethylene Wear ◽  
Femoral Shaft ◽  
Hip Resurfacing ◽  
Total Hip ◽  
Joint Prostheses

The UHMWPE acetabular cups are the most popular joints for joint prostheses after Charnley introduced UHMWPE for the acetabular component in 1962. It has been demonstrated that polyethylene wear remains the main source of particles in the THR and therefore requires particular attention. The paper presents a series of theoretical and practical aspects regarding the wear of acetabular cups (made of UHMWPE) from the total hip prosthesis component. At the same time, the other tribological phenomena that occur in these MoP (metal on polyethylene) combinations are treated, such as lubrication and friction. Total Hip Replacement & Hip Resurfacing A hip replacement involves replacing the hip joint with a mechanical bearing system which is comprised of a femoral component and an acetabular component. During a hip replacement the acetabulum is reamed and the acetabular component is fitted into the cavity and the femoral component can either be placed over a reamed femoral head, in a procedure referred to as hip resurfacing, or positioned inside the femoral shaft during a total hip replacement [1]. Fig. 1. Total Hip Replacement (a) and Hip Resurfacing Replacement (b) [2].

Dislocation of a dual mobility total hip replacement following fracture of the polyethylene liner

2016 ◽  
Vol 29 (03) ◽  
pp. 259-264
Author(s):  
Pierre Guillaumot ◽  
Jean-Luc Chancrin ◽  
Bertrand Vedrine
Keyword(s):  
Total Hip Replacement ◽  
Hip Replacement ◽  
Hip Prosthesis ◽  
Polyethylene Liner ◽  
Acetabular Cup ◽  
Dual Mobility ◽  
Total Hip ◽  
Initial Surgery ◽  
Acute Rupture ◽  
Cemented Cup

SummaryAn eight-year-old male English Setter was referred for management of a dislocation of a cemented dual mobility canine total hip prosthesis that occurred four months after the initial surgery. Revision surgery showed that the dislocation was associated with fracture of the ultra-high molecular weight polyethylene liner. The dislocation was successfully reduced after replacing the liner. A dual mobility acetabular component is composed of a mobile polyethylene liner inside a metallic cemented cup. Chronic wear of the components of a canine dual mobility total hip replacement has not been described previously. The use of this type of implant is fairly recent and limited long term follow-up of the implanted cases may be the explanation. Acute rupture of a polyethylene liner has never been described in humans, the only case of rupture of a polyethylene liner occurred 10 years after implantation. The case presented here of rupture of the polyethylene liner of a dual mobility total hip replacement is a hitherto unreported failure mode in this model of acetabular cup in the dog.

scholarly journals Dual mobility total hip replacement in a high risk population

SICOT-J ◽  
2016 ◽  
Vol 2 ◽  
pp. 43 ◽  
Author(s):  
Jatinder Singh Luthra ◽  
Amur Al Riyami ◽  
Mohamad Kasim Allami
Keyword(s):  
High Risk ◽  
Total Hip Replacement ◽  
Hip Replacement ◽  
High Risk Population ◽  
Risk Population ◽  
Dual Mobility ◽  
Total Hip

Factors Affecting the Design of the Head and Neck Segment of a Contemporary Total Hip Prosthesis

1994 ◽  
Vol 4 (3-4) ◽  
pp. 115-126
Author(s):  
B. Zicat ◽  
Y. Kukita ◽  
S. Grandia ◽  
C. Engh
Keyword(s):  
Head And Neck ◽  
Hip Prosthesis ◽  
Contralateral Side ◽  
Neck Length ◽  
Total Hip Prosthesis ◽  
Younger Patients ◽  
Factors Affecting ◽  
Total Hip ◽  
Relationship Analysis ◽  
Acetabular Components

Anthropometric investigation of femoral sizes and femoral pelvic relationships was performed in a group of unilateral total hip arthroplasty patients. Standardized radiographs were used to perform the measurements. The non-operated, contralateral side was used as a standard for endosteal anatomy and the normal femoral pelvic relationship. Analysis of endosteal shape reveals a spectrum ranging from the stovepipe shape of the aged bone that has undergone diaphyseal expansion, to the trumpet shaped proximal femur found in younger patients. There is also a relationship between this shape and the relative varus or valgus position of the head and neck of the femur. Implants can be designed with head and neck geometry corresponding to these relationships. These implants would reconstruct normal anatomy more accurately. Cementless, acetabula placed in a more medial and proximal position should be matched to femoral components with longer neck-length options than cemented acetabular components.

Outcome and complications after dual mobility total hip replacement

2012 ◽  
Vol 25 (06) ◽  
pp. 511-517 ◽  
Author(s):  
A. Autefage ◽  
T. Dembour ◽  
J.-L. Chancrin ◽  
P. Guillaumot
Keyword(s):  
Aseptic Loosening ◽  
Acetabular Component ◽  
Acetabular Fracture ◽  
Hip Prosthesis ◽  
Perioperative Complications ◽  
Greater Trochanter ◽  
Dual Mobility ◽  
Total Hip ◽  
Trochanter Fracture

SummaryObjectives: To report the clinical and radiographic outcome of a canine total hip prosthesis with a dual mobility acetabular component, with a minimum of six months follow-up.Methods: The outcome of dogs that underwent primary cemented unilateral dual mobility hip prosthesis surgery by one of the authors for hip dysplasia or trauma, and which had a minimum of six months clinical and radiologic follow-up, was evaluated.Results: Fifty dogs were included in the study. Follow-up ranged from six to 38 months (mean 14.4 months). Perioperative complications were acetabular collapse (n = 1) and greater trochanter fracture (n = 1), both of which were successfully managed perioperatively. Postoperative complications were aseptic loosening of the acetabular component (n = 2; both surgically revised), implant sepsis (n = 3; all explanted), acetabular fracture (n = 1; conservatively managed), greater trochanter fracture (n = 1; conservatively managed) and sciatic neurapraxia (n = 1). No cases of postoperative luxation or femoral implant aseptic loosening were encountered. Outcome was poor for three cases (3 implant sepsis), fair for three cases (including 1 acetabular component loosening and 1 acetabular fracture), and good or excellent for 44 cases (88%).Clinical significance: There were not any cases of postoperative coxofemoral luxation observed in this series of 50 dogs with dual mobility hip prosthesis. Studies with more patients and longer follow-up are needed to confirm the satisfactory results observed to date with this implant.

Metal Allergy and other Adverse Reactions in Patients with Total Hip Replacement

2015 ◽  
Vol 1114 ◽  
pp. 283-287 ◽  
Author(s):  
Marius Niculescu ◽  
Dan Laptoiu ◽  
Florin Miculescu ◽  
Iulian Vasile Antoniac
Keyword(s):  
Total Hip Arthroplasty ◽  
Total Hip Replacement ◽  
Hip Arthroplasty ◽  
Hip Replacement ◽  
Hip Prosthesis ◽  
Metal Corrosion ◽  
Metal Allergy ◽  
Total Hip Prosthesis ◽  
Total Hip ◽  
Tissue Reactions

Total hip prosthese are widely used in total hip arthroplasty, offering many benefit to patients with different articular diseases like osteoarthritis or after different accidents. Many total hip prosthesis are now available to the orthopaedic surgeons to replace the hip articulation, with different design and with components made by different type of biomaterials: metallic (cobalt-chrome and titanium alloys, zirconium-niobium alloy named oxinium), ceramic (alumina, zirconia), polymers (ultra high weight molecular polyethylene-UHMWPE). Even total hip arthroplasty has a high success rate, implant loosening may occur, with different symptoms that could be attributed to metal allergy. Because the stem components of the total hip prosthesis are made by metallic biomaterials, many papers describe the adverse effects related to the release of metal ions (like cytotoxicity, carcinogenicity and metal allergy). There are different types of metal corrosion: intergranular, pitting, crevice, fatigue, stress, fretting, and galvanic. On the other hand, in many cases (like metal-on-metal prosthesis) appear corrosion and wear between two metallic components. This processes are favourable for the aparition of hypersensitivity-related tissue reactions. Especially some metallic ions (nickel, cobalt, and chromium) presents in stainless steels and cobalt-chromium alloys are most known to be released from prostheses components and give metal allergy. Of course, during the time was developped some solutions in order to improve the performance of the hip prostheses components made by metallic components like coating with thin layers using different biomaterials like porous titanium or hydroxiapatite. The aims of this review article were to explore mainly the relationship between corrosion products and implant-related hypersensitivity, the importance of surface treatment for metallic components, try define the effect of metal ion concentrations, and differentiate between allergy and infection in total hip replacement. The long-term performance of the coated components will be also analyzed and synthetic described based on clinical results. Also, some relevant aspects from our clinical experience and retrieved prosthesis analysis using stereomicroscopy and scanning electron microscopy will be shown in order to support the conclusions.

Sign in / Sign up

Export Citation Format

Share Document