scholarly journals Computed Tomography in the Assessment and Planning of Complicated Total Hip Replacement

1982 ◽  
Vol 53 (4) ◽  
pp. 597-604 ◽  
Author(s):  
E. Barmeir ◽  
B. Dubowitz ◽  
M. Roffman
Keyword(s):  
Computed Tomography ◽  
Total Hip Replacement ◽  
Hip Replacement ◽  
Total Hip

Assessment of Acetabular Cup Orientation in Computed Tomography — A New Concept of Measuring Angles after Total Hip Replacement

1991 ◽  
pp. 828-828
Author(s):  
D. Radtke ◽  
R. Sokiranski ◽  
S. Exner ◽  
A. Radtke ◽  
M. Seidel ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Total Hip Replacement ◽  
Hip Replacement ◽  
Acetabular Cup ◽  
Total Hip

scholarly journals Evaluation of version of acetabular component following total hip replacement on conventional radiograph and computed tomography

2020 ◽  
Vol 27 (2) ◽  
pp. 179-185
Author(s):  
Manish Raj ◽  
Ashish Jaiman ◽  
Rajesh Kumar Chopra
Keyword(s):  
Computed Tomography ◽  
Ct Scan ◽  
Total Hip Replacement ◽  
Gold Standard ◽  
Hip Replacement ◽  
Regression Line ◽  
Patient Positioning ◽  
Acetabular Version ◽  
Total Hip ◽  
Significant Difference

Background/Purpose: Total hip replacement (THR) is considered as one of the most successful orthopedic procedures. However, improperly placed components can lead to instability and accelerated wear. Acetabular cup inclination can be very well accessed by anteroposterior pelvis X-rays; for acetabular version assessment, computed tomography (CT) scan is the gold standard. CT scan is not readily available at many centers and the surgeon has to rely on X-ray methods for evaluation of acetabular version to audit results and to predict behavior of the surgical intervention. This prospective study was undertaken to compare Woo and Morrey’s and ischiolateral methods of assessment of acetabular version on cross-table lateral radiographs with CT assessment and to assess the validity of radiographic methods with respect to CT scan method. Material and methods: A prospective follow-up study was conducted for 18 months’ duration (October 2016 to March 2018) on 30 adult patients who underwent THR surgery. Cross-table lateral radiograph was obtained at 3 and 6 weeks in the postoperative period. Two observers made each observation at two different points of time. CT scan was performed at 3 weeks. Version as measured by radiographs and CT scan was recorded. Results: The major overlap in the distribution of the values of the Woo and Morrey method suggests that there is no significant difference between the observations. Distribution of the values of the ischiolateral view and the CT scan value distributions have a very small overlap and hence suggest a strong significant difference between the two. Conclusion: In this study, Woo and Morrey’s method and ischiolateral method of assessment of acetabular version were compared with CT assessment. We found that in Woo and Morrey’s method, values were comparable to CT scan values, when put on regression line. However, in situation of change in patient positioning, namely hip stiffness in contralateral hip, measurement of component changed in series of radiography due to differences in pelvis tilt. So, in these circumstances, we can use ischiolateral method which can give consistent measurement. But it will not be in concordance with CT scan values and Woo and Morrey values, as represented in regression line. The high intra-class correlation coefficients for both intra- and inter-observer reliability indicated that the angle measured with these methods is consistent and reproducible for multiple observers. CT, however, be considered as gold standard for measurement owing to control over pelvic rotation and/or tilt/patient positioning.

scholarly journals Prosthetic liner wear in total hip replacement: a longitudinal 13-year study with computed tomography

2018 ◽  
Vol 47 (6) ◽  
pp. 883-887 ◽  
Author(s):  
Lars Weidenhielm ◽  
Henrik Olivecrona ◽  
Gerald Q. Maguire ◽  
Marilyn E. Noz
Keyword(s):  
Computed Tomography ◽  
Total Hip Replacement ◽  
Hip Replacement ◽  
Total Hip

Socket location in total hip replacement Preoperative computed tomography and computer simulation

1988 ◽  
Vol 59 (1) ◽  
pp. 1-5 ◽  
Author(s):  
Hirokazu Iida ◽  
Takao Yamamuro ◽  
Hideo Okumura ◽  
Toyoji Ueo ◽  
Ryuichi Kasai ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Computer Simulation ◽  
Total Hip Replacement ◽  
Hip Replacement ◽  
Total Hip

Computed Tomography to Assess Pelvic Lysis after Total Hip Replacement

2004 ◽  
Vol 422 ◽  
pp. 167-174 ◽  
Author(s):  
Alexandra M Claus ◽  
Saara M Totterman ◽  
Christi J Sychterz ◽  
Jos?? G Tamez-Pe??a ◽  
R John Looney ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Total Hip Replacement ◽  
Hip Replacement ◽  
Total Hip

The Hemodynamic and Fibrinolytic Response to Low Dose Epinephrine and Phenylephrine Infusions During Total Hip Replacement Under Epidural Anesthesia

1992 ◽  
Vol 68 (04) ◽  
pp. 436-441 ◽  
Author(s):  
Nigel E Sharrock ◽  
George Go ◽  
Robert Mineo ◽  
Peter C Harpel
Keyword(s):  
Heart Rate ◽  
Deep Vein Thrombosis ◽  
Cardiac Index ◽  
Total Hip Replacement ◽  
Epidural Anesthesia ◽  
Hip Replacement ◽  
Low Dose ◽  
Total Hip ◽  
Vein Thrombosis ◽  
Deep Vein

SummaryLower rates of deep vein thrombosis have been noted following total hip replacement under epidural anesthesia in patients receiving exogenous epinephrine throughout surgery. To determine whether this is due to enhanced fibrinolysis or to circulatory effects of epinephrine, 30 patients scheduled for primary total hip replacement under epidural anesthesia were randomly assigned to receive intravenous infusions of either low dose epinephrine or phenylephrine intraoperatively. All patients received lumbar epidural anesthesia with induced hypotension and were monitored with radial artery and pulmonary artery catheters.Patients receiving low dose epinephrine infusion had maintenance of heart rate and cardiac index whereas both heart rate and cardiac index declined significantly throughout surgery in patients receiving phenylephrine (p = 0.0001 and p = 0.0001, respectively). Tissue plasminogen activator (t-PA) activity increased significantly during surgery (p <0.0005) and declined below baseline postoperatively (p <0.005) in both groups. Low dose epinephrine was not associated with any additional augmentation of fibrinolytic activity perioperatively. There were no significant differences in changes in D-Dimer, t-PA antigen, α2-plasmin inhibitor-plasmin complexes or thrombin-antithrombin III complexes perioperatively between groups receiving low dose epinephrine or phenylephrine. The reduction in deep vein thrombosis rate with low dose epinephrine is more likely mediated by a circulatory mechanism than by augmentation of fibrinolysis.

Effects on Coagulation and Fibrinolysis of Desmopressin in Patients Undergoing Total Hip Replacement

1991 ◽  
Vol 66 (06) ◽  
pp. 652-656 ◽  
Author(s):  
Per Anders Flordal ◽  
Karl-Gösta Ljungström ◽  
Jan Svensson ◽  
Brenda Ekman ◽  
Gustaf Neander
Keyword(s):  
Total Hip Replacement ◽  
Hip Replacement ◽  
Bleeding Time ◽  
Antithrombin Iii ◽  
Postoperative Bleeding ◽  
Double Blind ◽  
Total Hip ◽  
Von Willebrand ◽  
Willebrand Factor ◽  
Coagulation And Fibrinolysis

SummaryTwelve patients undergoing total hip replacement, with regional anaesthesia and with dextran infusion for plasma expansion and thromboprophylaxis, were given the vasopressin analogue desmopressin (DDAVP) or placebo in a randomized, double-blind prospective study. In controls (n = 6) we found a prolongation of the bleeding time, low factor VIII (FVIII) and von Willebrand factor (vWF) and a decrease in antithrombin III to levels known to be at risk for venous thrombosis. Desmopressin shortened postoperative bleeding time, gave an early FVIII/vWF complex increase, prevented antithrombin III from falling to critically low values and appeared to activate the fibrinolytic system, both by tPA increase and PAI-1 decrease.Thus in the controls we found changes in both coagulation and fibrinolysis indicating a haemorrhagic diathesis as well as a risk for thromboembolism. Desmopressin induced factor changes that possibly reduce both risks.

Low-Dose Heparin and Deep-Vein Thrombosis after Total Hip Replacement

1976 ◽  
Vol 36 (01) ◽  
pp. 157-164 ◽  
Author(s):  
P. M Mannucci ◽  
Luisa E. Citterio ◽  
N Panajotopoulos
Keyword(s):  
Deep Vein Thrombosis ◽  
Total Hip Replacement ◽  
Hip Replacement ◽  
Low Dose ◽  
Control Group ◽  
Total Hip ◽  
Vein Thrombosis ◽  
Dose Heparin ◽  
Deep Vein ◽  
Low Dose Heparin

SummaryThe effect of subcutaneous low-dose heparin on postoperative deep-vein thrombosis (D. V. T.) (diagnosed by the 125I-labelled fibrinogen test) has been investigated in a trial of 143 patients undergoing the operation of total hip replacement. Two randomized studies were carried out: in one the scanning for D.V.T. was carried out daily for 7 days post operatively and in the other for 15 days. In both, the incidence of D.V.T. was significantly lower in the heparin-treated patients (P<0.005). Bilateral D.V.T. was also prevented (P<0.05), through the extension of D.V.T. to the distal veins of the thigh was not significantly reduced. Heparin treatment was, however, followed by a higher incidence of severe postoperative bleeding (P< 0.02) and wound haematoma formation (P< 0.005), and the postoperative haemoglobin was significantly lower than in the control group (P<0.005). A higher number of transfused blood units was also needed by the heparin treated patients (P<0.001).

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