scholarly journals Total Hip Replacement: Tensile Stress in Bone Cement is influenced by Cement Mantle Thickness, Acetabular Size, Bone Quality, and Body Mass Index

2014 ◽  
Vol 7 (3) ◽  
Author(s):  
Lamvohee JMS
Keyword(s):  
Body Mass Index ◽  
Tensile Stress ◽  
Bone Cement ◽  
Body Mass ◽  
Total Hip Replacement ◽  
Bone Quality ◽  
Hip Replacement ◽  
Cement Mantle ◽  
Total Hip ◽  
Mantle Thickness

scholarly journals The Influence of Body Mass Index and Hip Anatomy on Direct Anterior Approach Total Hip Replacement

2016 ◽  
Vol 25 (6) ◽  
pp. 555-560 ◽  
Author(s):  
Weilin Sang ◽  
Libo Zhu ◽  
Jinzhong Ma ◽  
Haiming Lu ◽  
Cong Wang
Keyword(s):  
Body Mass Index ◽  
Body Mass ◽  
Total Hip Replacement ◽  
Hip Replacement ◽  
Anterior Approach ◽  
Direct Anterior Approach ◽  
Total Hip ◽  
Hip Anatomy

scholarly journals Reproduction of fretting wear at the stem—cement interface in total hip replacement

2007 ◽  
Vol 221 (8) ◽  
pp. 963-971 ◽  
Author(s):  
L Brown ◽  
H Zhang ◽  
L Blunt ◽  
S Barrans
Keyword(s):  
Bone Cement ◽  
Total Hip Replacement ◽  
Hip Replacement ◽  
Fatigue Cracks ◽  
Cement Mantle ◽  
Fretting Wear ◽  
Cement Interface ◽  
Total Hip

The stem-cement interface experiences fretting wear in vivo due to low-amplitude oscillatory micromotion under physiological loading, as a consequence it is considered to play an important part in the overall wear of cemented total hip replacement. Despite its potential significance, in-vitro simulation to reproduce fretting wear has seldom been attempted and even then with only limited success. In the present study, fretting wear was successfully reproduced at the stem-cement interface through an in-vitro wear simulation, which was performed in part with reference to ISO 7206-4: 2002. The wear locations compared well with the results of retrieval studies. There was no evidence of bone cement transfer films on the stem surface and no fatigue cracks in the cement mantle. The cement surface was severely damaged in those areas in contact with the fretting zones on the stem surface, with retention of cement debris in the micropores. Furthermore, it was suggested that these micropores contributed to initiation and propagation of fretting wear. This study gave scope for further comparative study of the influence of stem geometry, stem surface finish, and bone cement brand on generation of fretting wear.

Cement-mantle thickness affects cement strains in total HIP replacement

1997 ◽  
Vol 30 (11-12) ◽  
pp. 1173-1177 ◽  
Author(s):  
D.A. Fisher ◽  
A.C. Tsang ◽  
N. Paydar ◽  
S. Milionis ◽  
C.H. Turner
Keyword(s):  
Total Hip Replacement ◽  
Hip Replacement ◽  
Cement Mantle ◽  
Total Hip ◽  
Mantle Thickness

scholarly journals Is kinesiophobia a predictor of early functional performance after total hip replacement? A prospective prognostic cohort study

2020 ◽  
Vol 21 (1) ◽  
Author(s):  
M. Morri ◽  
E. Venturini ◽  
N. Franchini ◽  
R. Ruisi ◽  
A. Culcasi ◽  
...  
Keyword(s):  
Body Mass Index ◽  
Cohort Study ◽  
Body Mass ◽  
Total Hip Replacement ◽  
Functional Ability ◽  
Hip Replacement ◽  
Functional Performance ◽  
Knee Prosthesis ◽  
Average Score ◽  
Total Hip

Abstract Background Considerable attention has been paid to the role of kinesiophobia with respect to knee prosthesis but it has not yet been studied as a prognostic factor of short-term functional performance following total hip replacement. The main purpose of the present study is to examine the possible predictors of early functional performance of patients undergoing total primary hip arthroplasty, including demographics as age, sex and body mass index, preoperative functional ability, type of anaesthesia, level of haemoglobin, pain and level of kinesiophobia before surgery. Secondly, we want to describe the main characteristics of the population with the highest levels of kinesiophobia. Methods A prospective, prognostic cohort study was carried out. Patients undergoing primary hip replacement were recruited consecutively. The main outcome is the early functional performance achieved by patients after surgery and measured using the Iowa Level of Assistance (ILOA) scale on the fifth postoperative day. Preoperative kinesiophobia was measured by the Tampa Scale and the preoperative functional ability by the Western Ontario and McMaster Osteoarthritis Index (WOMAC). The multivariate analysis was performed by the General Linear Model. The analysis of the population with high levels of kinesiophobia was conducted by identifying a cut-off of 40 compared to the Tampa Scale. Results Statistical analysis was performed on 269 patients. The average ILOA score recorded was 19.5 (DS 8.3). The levels of kinesiophobia, showed an average score of 35.1 (7.8) and it was not associated with early functional performance. The independent predictive factors include age, sex and body mass index. Kinesiophobia high levels were recorded in 30% of the population and this population had a higher level of pre-operative WOMAC score. Conclusions Early functional performance after hip replacement surgery was not correlated with the level of kinesiophobia. Three significant factors that describe a population most at risk of not achieving optimal functional performance are increased age, being female and increase in body mass index. In the preoperative phase, high levels of kinesiophobia were associated with more impaired preoperative functional ability. Trial registration Current Controlled Trials NCT02786121, May 2016. Retrospectively registered.

En-bloc femoral cement removal after failure of cemented total hip replacement in two dogs

2013 ◽  
Vol 26 (02) ◽  
pp. 130-134 ◽  
Author(s):  
J. Song ◽  
J. G. Sheehy ◽  
J. Dyce
Keyword(s):  
Bone Cement ◽  
Total Hip Replacement ◽  
Hip Replacement ◽  
Periprosthetic Infection ◽  
Cement Mantle ◽  
Femoral Bone ◽  
En Bloc ◽  
Cement Interface ◽  
Total Hip ◽  
Cement Removal

SummaryIn two dogs with periprosthetic infection after total hip replacement, the femoral cement mantle was retrieved by proximal extraction without an invasive osteotomy or cortical fenestration. En-bloc femoral cement removal was performed by injection of polymethylmethacrylate cement into the central mantle void left after stem removal, and by threading a positive profile pin into the newly injected cement. Once the PMMA had polymerized, the pin was withdrawn with the entire mantle attached. This technique should be considered in patients with circumferential deterioration of the femoral bone-cement interface in which the diameter of the femoral isthmus would not obstruct withdrawal of the cement mantle.

scholarly journals The Association of Body Mass Index with Risk of Long-Term Revision and 90-Day Mortality Following Primary Total Hip Replacement

2018 ◽  
Vol 100 (24) ◽  
pp. 2140-2152 ◽  
Author(s):  
Sofia Mouchti ◽  
Michael R. Whitehouse ◽  
Adrian Sayers ◽  
Linda P. Hunt ◽  
Alexander MacGregor ◽  
...  
Keyword(s):  
Body Mass Index ◽  
Body Mass ◽  
Total Hip Replacement ◽  
Hip Replacement ◽  
Total Hip
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