scholarly journals Relationship Between the Accuracy of Acetabular Cup Angle and Body Mass Index in Posterolateral Total Hip Arthroplasty With CT-Based Navigation: A Retrospective Case-Control Study

2020 ◽  
Author(s):  
Hisatoshi Ishikura ◽  
Masaki Nakamura ◽  
Hanae Nishino ◽  
Shigeru Nakamura ◽  
Takeyuki Tanaka ◽  
...  
Keyword(s):  
Body Mass Index ◽  
Total Hip Arthroplasty ◽  
Body Mass ◽  
Hip Arthroplasty ◽  
Acetabular Cup ◽  
Total Hip ◽  
Significant Difference ◽  
The Mean ◽  
Navigation Errors ◽  
The Relationship

Abstract Background: Precise acetabular cup placement is essential for successful total hip arthroplasty (THA). In obese patients, its accuracy is often difficult to achieve because of the thickness of the soft tissues. This study aimed to determine the relationship between the accuracy of acetabular cup angle and body mass index (BMI) in posterolateral THA using the computed tomography-based navigation (CT-navi) system.Methods: We retrospectively reviewed 145 consecutive primary THAs using the CT-navi system between January 2015 and January 2018. All surgeries were performed using cementless cups employing the posterolateral approach with the patient in the decubitus position. We compared the radiographic inclination and anteversion obtained from the angle displayed on the CT-navi screen with those measured by the postoperative CT using the three-dimensional templating software. We evaluated the relationship between the extent of errors and correlation with BMI. Statistical analyses were performed using the Student’s t-test and Spearman’s rank coefficient test.Results: In non-overweight patients (BMI < 25, 88 hips), the mean navigation errors for inclination were 2.8 ± 2.2° and for anteversion were 2.6 ± 2.3°. Meanwhile, in overweight patients (BMI ≥ 25, 57 hips), the mean navigation errors were 2.6 ± 2.4° for inclination and 2.4 ± 2.4° for anteversion. We found no significant difference between overweight and non-overweight patients in both inclination and anteversion. The Spearman’s rank correlation coefficients were -0.04 for inclination and -0.11 for anteversion, showing no correlation between the extent of errors and BMI.Conclusions: In posterolateral THA, CT-navi can aid the precise placement of the acetabular cup irrespective of a patient’s BMI.Trial registration: This trial was retrospectively registered and approved by the institutional ethics committee of Teikyo University. The registration number is 17-190, and the date of approval was March 1, 2018. URL of trial registry is: https://www.teikyo-u.ac.jp/application/files/7015/8432/1341/2016_all_syounin_1.pdf

scholarly journals Outcome in Patients with High Body Mass Index following Primary Total Hip Arthroplasty

2015 ◽  
Vol 2015 ◽  
pp. 1-4
Author(s):  
Zuned Hakim ◽  
Claire Rutherford ◽  
Elizabeth Mckiernan ◽  
Tony Helm
Keyword(s):  
Body Mass Index ◽  
Total Hip Arthroplasty ◽  
Body Mass ◽  
Hip Arthroplasty ◽  
Rank Correlation ◽  
High Body Mass Index ◽  
Total Hip ◽  
Significant Difference ◽  
Using Data ◽  
Primary Total Hip Arthroplasty

Obesity is becoming a critical problem in the developed world and is associated with an increased incidence of osteoarthritis of the hip. The Oxford Hip Score was used to determine if Body Mass Index (BMI) is an independent factor in determining patient outcome following primary total hip arthroplasty (THA). Using data from 353 operations we found that patients with BMI ≥ 30 had an absolute score that was lower preoperatively and postoperatively compared to those with a BMI < 30. There was no difference in pre- and postoperative point score change within each group; Kendall’s rank correlation was 0.00047 (95% CI, −0.073 to 0.074 (p=0.99)) and demonstrated no trend. There was no statistically significant difference in change between those with BMI ≥ 30 and < 30 (p=0.65). We suggest that those with a higher BMI be considered for THA as they can expect the same degree of improvement as those with a lower BMI. Given the on-going increase in obesity these findings could be significant for the future of THA.

scholarly journals 32-mm ceramic-on-ceramic total hip arthroplasty versus 28-mm ceramic bearings: 5- to 15-year follow-up study

2018 ◽  
Vol 29 (1) ◽  
pp. 65-71 ◽  
Author(s):  
Yoshitoshi Higuchi ◽  
Taisuke Seki ◽  
Yukiharu Hasegawa ◽  
Yasuhiko Takegami ◽  
Daigo Morita ◽  
...  
Keyword(s):  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Harris Hip Score ◽  
Total Hip ◽  
Kaplan Meier ◽  
Significant Difference ◽  
Average Patient ◽  
The Mean ◽  
Ceramic On Ceramic

Introduction: This study aimed to compare the clinical and radiographic results of 28-mm ceramic-on-ceramic (CoC) total hip arthroplasty (THA) to those of 32-mm CoC during a 5- to 15-year follow-up period. Methods: 107 joints (95 women and 6 men) underwent 28-mm CoC, and 60 (49 women and 7 men) underwent 32-mm CoC. The average patient age at the time of surgery was 56.1 and 55.7 years in the 28-mm and 32-mm CoC groups, respectively. Clinical and radiologic measurements of all patients were analysed. Results: The mean preoperative Harris hip score (HHS) was similar in the 2 groups (28-mm, 58.9; and 32-mm, 58.5). However, at final follow-up, the mean HHS of the 32-mm CoC (91.8) was significantly better than that of the 28-mm CoC (88.2) ( p = 0.003), as were the ranges of motion (ROM) for flexion (98.3 ± 13.5° vs. 87.3 ± 19.3°, p < 0.001) and abduction (27.8 ± 14.9° vs. 22.1 ± 19.3°, p = 0.007). The mean wear rate was 0.0044 mm/year for the 28-mm CoC and 0.0044 mm/year for the 32-mm CoC. No ceramic fractures were found in the 2 groups. One joint in the 28-mm CoC (0.9%) required revision owing to progressive osteolysis. Kaplan-Meier survival at 10 years, with implant loosening or revision THA as the endpoint, was 98.3% for 28-mm CoC and 100% for 32-mm CoC ( p = 0.465). Conclusion: There was no significant difference in ceramic-related complications between the 2 groups. Our study demonstrated that the 32-mm and 28-mm CoC are safe and are associated with good clinical outcomes.

Change in Body Mass Index in Patients Following Total Hip Arthroplasty.

2008 ◽  
Vol 21 (6) ◽  
pp. 1
Author(s):  
T. Bacon-Baguley ◽  
T. Mollan ◽  
P. Oleszkiewicz ◽  
D. Rispler
Keyword(s):  
Body Mass Index ◽  
Total Hip Arthroplasty ◽  
Body Mass ◽  
Hip Arthroplasty ◽  
Total Hip

scholarly journals Prediction of Functional Outcome at Six Months Following Total Hip Arthroplasty

2012 ◽  
Vol 92 (11) ◽  
pp. 1386-1394 ◽  
Author(s):  
Emily J. Slaven
Keyword(s):  
Body Mass Index ◽  
Logistic Regression ◽  
Total Hip Arthroplasty ◽  
Functional Outcome ◽  
Body Mass ◽  
Hip Arthroplasty ◽  
Walking Speed ◽  
Assistive Device ◽  
Total Hip ◽  
Cart Analysis

Background Recovery of function such as the ability to walk without an assistive device after total hip arthroplasty (THA) is not always automatic. Objective This study investigated whether predetermined variables could be used to identify patients who might have functional limitations at 6 months following THA. Design A prospective, observational cohort design was used. Method Demographics and baseline measures, including age, sex, and preoperative Lower Extremity Functional Scale (LEFS) score, were collected 1 to 3 weeks prior to surgery from 40 participants who were scheduled to undergo THA. Six weeks after surgery, a second LEFS score was recorded along with each participant's body mass index and the THA procedure performed; walking speed and balance also were assessed at this time using the 10-Meter Walk Test, the Timed “Up & Go” Test, and the Functional Reach Test. At 6 months following surgery, each participant's functional outcome was determined from the final LEFS score and the need for an assistive device. Classification and regression tree (CART) analyses and logistic regression were used to establish which of the variables could predict outcome at 6 months. Results Body mass index, sex, and age were identified by CART analysis as predictors to classify participants who did not reach successful outcome status. Logistic regression revealed that sex (female) was the only individual variable that predicted outcome at 6 months. Walking speed was the only performance variable identified as a predictor for outcome using CART analysis. Limitations Only a limited number of variables were observed due to the small sample size. Conclusion It is possible to identify those patients who are at risk for an unsuccessful outcome through the use of variables such as body mass index, age, and sex.

Acetabular component migration in total HIP arthroplasty using CT and a semiautomated program for volume merging

2002 ◽  
Vol 43 (5) ◽  
pp. 517-527 ◽  
Author(s):  
L. Olivecrona ◽  
J. Crafoord ◽  
H. Olivecrona ◽  
M. E. Noz ◽  
G. Q. Maguire ◽  
...  
Keyword(s):  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Plain Radiography ◽  
Acetabular Cup ◽  
Visual Evaluation ◽  
Total Hip ◽  
Non Invasive ◽  
Invasive Method ◽  
The Mean ◽  
Component Migration

Purpose: To develop a non-invasive method for detection of acetabular cup migration after total hip arthroplasty (THA) with a higher degree of accuracy than routine plain radiography. Material and Methods: Two CT examinations, 10 min apart, were obtained from each of 10 patients that had undergone THA. Using an in-house developed semiautomated program for volume merging, the pelves in the two examinations were fused and the acetabular cup was visually and numerically evaluated to test the method's accuracy in detecting migration. Results: In the visual evaluation of the best match a 1-mm translation of the cup was detectable. The numerical evaluation, comparing landmarks placed in the images of the acetabular cup and the head of the femur component in the two examinations, showed the mean difference in orientation of acetabular axes to be 2.5°, the mean distance between centre of cup face to be 2.5 mm and the mean distance between centre of the head of the prosthetic femoral component to be 1 mm. Conclusion: This method has a significantly higher accuracy than routine plain radiography in detecting acetabular cup migration and could be used in clinical practice. It gives both a visual and a numerical correlate to migration.

scholarly journals Diabetes Status Affects Odds of Body Mass Index–dependent Adverse Outcomes After Total Hip Arthroplasty

2021 ◽  
Vol 29 (2) ◽  
pp. 71-77
Author(s):  
Kareem J. Kebaish ◽  
Varun Puvanesarajah ◽  
Sandesh Rao ◽  
Bo Zhang ◽  
Taylor D. Ottesen ◽  
...  
Keyword(s):  
Body Mass Index ◽  
Total Hip Arthroplasty ◽  
Body Mass ◽  
Hip Arthroplasty ◽  
Adverse Outcomes ◽  
Total Hip ◽  
Diabetes Status
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