THREE-DIMENSIONAL MORPHOMETRY OF NATIVE ACETABULUM IN RELATION TO DESIGN AND IMPLANTATION OF CANINE TOTAL HIP REPLACEMENTS

2012 ◽  
Vol 24 (06) ◽  
pp. 549-555 ◽  
Author(s):  
Ching-Ho Wu ◽  
Cheng-Chung Lin ◽  
Tung-Wu Lu ◽  
Lih-Seng Yeh
Keyword(s):  
Total Hip Replacement ◽  
Hip Replacement ◽  
Quantitative Data ◽  
Three Dimensional ◽  
Morphological Parameters ◽  
3D Ct ◽  
Total Hip ◽  
Acetabular Orientation ◽  
Total Hip Replacements ◽  
Hip Replacements

Total hip replacement (THR) has been one of the main choices in treating dysplasia and other disabling conditions of the coxofemoral joint of large-breed dogs. Quantitative data of the three-dimensional (3D) morphology of the native normal acetabulum will be helpful for better design and implantation of prosthetic components. However, 3D orientation and morphological parameters of the native acetabulum in large-breed dogs are rarely reported. The purposes of the study were to measure the values of the 3D morphological parameters of the native acetabulum in Labrador Retriever dogs, namely acetabular orientation in relation to the pelvis, as well as the radius, angle between ventral and dorsal rims, and the distance from the center to the dorsal rim of the acetabulum using a 3D CT-derived model. The data will be useful for developing a more accurate guideline for improving current THR designs and for more accurate placement of the acetabulum component during THR surgery.

The Incidence of Fracture in Total Hip Replacement Femoral Components

1978 ◽  
Vol 7 (2) ◽  
pp. 107-110 ◽  
Author(s):  
H. S. Dobbs
Keyword(s):  
Femoral Component ◽  
Total Hip Replacement ◽  
Hip Replacement ◽  
Fracture Rate ◽  
Total Hip ◽  
Total Hip Replacements ◽  
Orthopaedic Hospital ◽  
Hip Replacements ◽  
Cobalt Chrome

The paper reports on the incidence of fracture of the femoral component of total hip replacements in patients at the Royal National Orthopaedic Hospital over the period 1963-1976. The average incidence of fracture was approximately 0.2 per cent per year for air melt air cast cobalt chrome components. For vacuum melt vacuum cast components there were no fractures, but because of the small number of insertions with a long follow-up period, this result could have been fortuitous. There was a suggestion that the fracture rate increased with time, but even 0.2 per cent is considered too high.

scholarly journals Total hip replacement for the treatment of acute femoral neck fractures: results from the National Joint Registry of England and Wales at 3-5 years after surgery

2012 ◽  
Vol 94 (3) ◽  
pp. 193-198 ◽  
Author(s):  
GH Stafford ◽  
SC Charman ◽  
MJ Borroff ◽  
C Newell ◽  
JK Tucker
Keyword(s):  
Total Hip Replacement ◽  
Hip Replacement ◽  
National Joint Registry ◽  
Fractured Neck Of Femur ◽  
Neck Of Femur ◽  
England And Wales ◽  
Total Hip ◽  
Joint Registry ◽  
Total Hip Replacements ◽  
Hip Replacements

INTRODUCTION This paper describes, for the first time, the outcomes of patients undergoing total hip replacement for acute fractured neck of femur (#NOF) as recorded by the National Joint Registry of England and Wales (NJR). METHODS In the NJR we identified 1,302 of 157,232 Hospital Episode Statistics linked patients who had been recorded as having a total hip replacement for acute #NOF between April 2003 and November 2008. RESULTS The revision rate at five years for fully uncemented components was 4.1% (95% confidence interval [Cl]: 2.2-7.3%), for hybrid it was 2.2% (95% Cl: 0.9%-5.3%) and for fully cemented components 0.9% (95% Cl: 0.4-2.0%). Five-year revision rates were increased for those whose operations were performed via a posterior versus a lateral approach. The Kaplan-Meier estimate of 30-day mortality was 1.4% (95% Cl: 1.0-2.4%), which is over double the 30-day mortality rate for total hip replacement identified by the Office for National Statistics. The mean length of stay was also increased for those undergoing total hip replacements for #NOF compared with non-emergency indications. CONCLUSIONS Our data suggest that total hip replacements for acute #NOF give comparable results with total hip replacements for other indications.

scholarly journals Primary Total Hip Replacement in A Military Hospital in Kathmandu

2017 ◽  
Vol 56 (205) ◽  
pp. 158-162
Author(s):  
Pankaj Chand ◽  
Sushil Rana Magar ◽  
Bishnu Babu Thapa ◽  
Bikal Shrestha
Keyword(s):  
Total Hip Replacement ◽  
Hip Replacement ◽  
Orthopedic Procedures ◽  
Harris Hip Score ◽  
Total Hip ◽  
Orthopedic Procedure ◽  
Total Hip Replacements ◽  
Primary Osteoarthritis ◽  
Hip Replacements ◽  
The Mean

Introduction: Total hip replacement is one of the most widely performed and amongst the most successful orthopedic procedures performed worldwide. Even though it is a common orthopedic procedure in developed nations, it is performed only in selected centers in Nepal.  This study will review the functional outcome of total hip replacements carried out in Shree Birendra Hospital. Methods: We reviewed the records of total hip replacements, which were carried out in Shree Birendra Hospital, Kathmandu. Twenty-one hips were cemented and nineteen were uncemented.  Cases were followed up in six weeks, twelve weeks, six months and every year from then on. Outcome in terms of Harris hip score of 40 osteoarthritic hips were measured pre-operatively as well as post-operatively. Results: The mean age of the patients was 50.63 years (range 22-79 years). The commonest reason for the replacement was primary osteoarthritis of the hip. Thirty-nine patients underwent unilateral total hip replacement while in one patient both hips were replaced. The mean Harris hip score for the forty hips that were available at the latest follow-up examination at an average of five years (range two to six and a half years) after the operation was 85.2 ± 7.65 points as compared to the pre-operative mean Harris hip score of 32.38 ± 3.4. Conclusions: Based on improved Harris hip scores, we believe that THR is a good option in patients with end stage arthritis of the hip. Keywords: cemented; primary osteoarthritis; total hip replacement.

scholarly journals Intrarater and Interrater Reliability of the Socket Version Marker in Total Hip Replacement

2013 ◽  
Vol 7 (1) ◽  
pp. 630-634
Author(s):  
Kowshik Jain ◽  
Ravindra Badge ◽  
Rajeev Bansal ◽  
Anil Gambhir ◽  
Mukesh Hemmady
Keyword(s):  
Total Hip Replacement ◽  
Hip Replacement ◽  
Interrater Reliability ◽  
Junior Doctor ◽  
Interobserver Variability ◽  
Junior Doctors ◽  
Intrarater Reliability ◽  
Total Hip ◽  
Total Hip Replacements ◽  
Hip Replacements

The aim of this study was to evaluate the intraobserver and interobserver variability in determining the socket version using the wire marker. 100 anteroposterior pelvis radiographs of cemented primary total hip replacements were reviewed by two orthopaedic consultants and registrars, twice. Intrarater and interrater reliability were assessed using Cohen’s kappa. Intrarater kappas for junior doctors were 0.78 and 0.80, 0.73 and 0.62 for Consultants. Interrater kappas were 0.60 between the two Consultants and 0.63 between the two Junior Doctors. The kappas between Consultant A and Junior Doctor A was 0.61, between Consultant A and Junior Doctor B was 0.59, between Consultant B and Junior Doctor A was 0.53 and between Consultant B and Junior Doctor B was 0.46. Intrarater reliability was substantial for the two junior doctors and the two consultants. Interrater reliability was moderate-to-substantial between the two consultants, between the two junior doctors and between each pair of junior doctors/consultants.

Complications with the Zurich Canine Total Hip Replacement System in an Initial Series of Cases Performed by a Single Surgeon

2021 ◽  
Author(s):  
Samuel P. Franklin ◽  
Nathan A. Miller ◽  
Todd Riecks
Keyword(s):  
Total Hip Replacement ◽  
Hip Replacement ◽  
Weight Bearing ◽  
Normal Function ◽  
High Rate ◽  
Total Hip ◽  
Initial Series ◽  
Major Complications ◽  
Hip Replacements ◽  
Replacement System

Abstract Objective The aim of this study was to quantify the complications using the Zurich total hip replacement system in an initial series of cases performed by a single surgeon who had experience with other total hip replacement systems. Materials and Methods This was a retrospective study in which complications were classified as major if any treatment was needed or if the outcome was less than near-normal function. Complications that did not warrant treatment and that did not result in function that was inferior to near-normal were considered minor. Outcomes were assessed by radiographic review, physical examination, subjective gait evaluation or, in one case, by objective gait analysis. Bilateral total hip replacements were considered separate procedures. Results The first 21 procedures in 19 dogs performed by a single surgeon were included. The mean time to follow-up was 48 weeks (range: 8–120 weeks; standard deviation: 36 weeks). Two cases (of 21) experienced major complications including one dog with excess internal femoral rotation during weight bearing and one dog having luxation. One case (of 21) had a minor complication; femoral fracture in the presence of an intact bone plate that maintained alignment and healed without treatment. Clinical Significance A high rate of successful outcomes with few major complications can be obtained in the initial cases treated using the Zurich total hip replacement system for surgeons with prior experience with other total hip replacement systems.

Comparision of Cup Anteversion and Tilt Effects on Dislocation Propensity for Small-Head-Size Total Hip Replacements

2000 ◽  
Author(s):  
Mark E. Nadzadi ◽  
Douglas R. Pedersen ◽  
John J. Callaghan ◽  
Thomas D. Brown
Keyword(s):  
Range Of Motion ◽  
Three Dimensional ◽  
Element Model ◽  
Head Size ◽  
Modular System ◽  
Total Hip ◽  
Total Hip Replacements ◽  
Apparent Stiffness ◽  
Hip Replacements ◽  
Laboratory Examinations

Abstract While dislocation is a leading cause of total hip replacement failure, empirical observations far outnumber systematic laboratory examinations of this phenomenon. A previously validated three-dimensional, non-linear, contact finite element model was used to study how surgical placement affects dislocation propensity. The computational model employed a widely used 22mm modular system, and examined range of motion prior to impingement as well as peak moment developed to resist dislocation under a typical leg-crossing maneuver. Results were compared to a previous study of an otherwise similar 26mm modular head system, using the same formulation. Similar trends occurred. Increasing tilt and/or anteversion increased both the range of motion and the peak resisting moment, while apparent stiffness seemed to be unaffected. Further, impingement range of motion was independent of head size, but peak resisting moment was nearly 25% less for the 22mm head sizes.

The complex primary total hip replacement

2011 ◽  
Author(s):  
James Donaldson ◽  
Richard Carrington
Keyword(s):  
Total Hip Replacement ◽  
Hip Replacement ◽  
Walking Ability ◽  
Careful Evaluation ◽  
Screening Programs ◽  
Total Hip ◽  
Number Of Patients ◽  
Hip Replacements

♦ Hip Dysplasia• Despite screening programs, a large number of patients are affected by dysplastic hips and their sequelae• An understanding of anatomical abnormalities is crucial• Appropriate techniques and implants make arthroplasty feasible• Complications are significantly higher than standard primary hip replacements♦ Protrusio Acetabuli• Technical difficulties include inadequate medial wall and restoring offset, hip centre and leg lengths• Neck may need to be cut in-situ; bone graft is usually necessary and ideally should be taken from the femoral head• Antiprotrusio cages or custom implants may be needed in cases with excessive bone loss♦ Arthrodesed hip to total hip replacement• Careful evaluation of the gluteal muscles is mandatory and predicts final walking ability and patient satisfaction• Long-term effectiveness of total hip replacement in ankylosed hips is satisfactory but there is a higher complication rate

Impingement and range of motion in total hip replacement: A three-dimensional gait and video-fluoroscopic analysis

2016 ◽  
Vol 49 ◽  
pp. S19 ◽  
Author(s):  
C. Belvedere ◽  
M. Cadossi ◽  
S. Tamarri ◽  
G. Lullini ◽  
A. Ensini ◽  
...  
Keyword(s):  
Range Of Motion ◽  
Total Hip Replacement ◽  
Hip Replacement ◽  
Three Dimensional ◽  
Total Hip

scholarly journals 1528 Pseudotumour from Corrosive Material of Total Hip Replacement: A Rare Complication with an Unusual Presentation

2021 ◽  
Vol 108 (Supplement_6) ◽  
Author(s):  
M Ahmed ◽  
S Radha
Keyword(s):  
Hip Replacement ◽  
Metal Ion ◽  
Galvanic Corrosion ◽  
Rare Complication ◽  
Iliac Fossa ◽  
Cystic Mass ◽  
Rare Presentation ◽  
Total Hip ◽  
Total Hip Replacements ◽  
Hip Replacements

Abstract Total hip replacements have been performed in the UK since the 1960s, with over 280000 primary hip replacements being conducted between January 2017 – December 2019. The formation of pseudotumours is an uncommon and an unusual long-term complication of total hip replacements. Formed by galvanic corrosion of the metal prosthesis, patients can display an array of symptoms. We herein report a rare presentation of unilateral leg oedema in an elderly female, mimicking deep vein thrombosis. Despite normal metal ion levels, radiological investigations revealed an irregular cystic mass extending into the iliac fossa compressing the neurovascular bundle in the groin. The patient underwent complex revision hip surgery with dual mobility hip replacement and an Exeter stem with excision of the pseudotumour. This case highlights the importance of appropriate workup for these patients and the involvement of a multidisciplinary team.

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