scholarly journals The Accuracy of Acetabular Cup Placement in Primary Total Hip Arthroplasty Using an Image-free Navigation System

2021 ◽  
Author(s):  
Yohei Naito ◽  
Masahiro Hasegawa ◽  
Shine Tone ◽  
Hiroki Wakabayashi ◽  
Akihiro Sudo
Keyword(s):  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Navigation System ◽  
Control Group ◽  
Navigation Systems ◽  
Total Hip ◽  
Navigation Group ◽  
The Mean ◽  
Group 2 ◽  
Group 1

Abstract Background: Intraoperative navigation systems have been shown to improve the accuracy of acetabular component insertion in total hip arthroplasty (THA). The purpose of this study was to investigate the accuracy of cup orientation in primary THA using an image-free navigation system.Methods: A total of 107 consecutive cementless THAs using an image-free navigation system were performed from February 2017 to March 2020 (the navigation group). As a control group, 77 retrospective consecutive cases who underwent THAs with manual implant-techniques between February 2012 and April 2017 were included. Postoperative cup radiographic inclination and radiographic anteversion relative to the functional pelvic plane were assessed using a 3D-template system after computed tomography (CT) examination.Results: The mean absolute errors of the postoperative measured angles from the target angles in inclination were 3.4°±3.0° in the navigation group and 8.4°±6.6° in the control group (p<0.001). The mean absolute errors in anteversion were 5.1° ± 3.6° in the navigation group and 10.8° ± 6.5° in the control group (p<0.001). The percentage of cups inside the Lewinnek safe zone was 93% in the navigation group and 44% in the control group (p<0.001). The mean absolute values of navigation error were 3.3° ± 2.8° in inclination and 5.8° ± 4.9° in anteversion. Among the cases of osteoarthritis, the inclination error was significantly higher in Crowe group 2 to 4 than in Crowe group 1 (5.1° ± 3.5° and 3.0° ± 2.5°, respectively, p<0.05). The percentage of hips with inclination error over 10° in Crowe group 2 to 4 was significantly higher than in Crowe group 1 (17% and 1%, respectively, p<0.05).Conclusions: The image-free navigation system improved the accuracy of cup orientation. The accuracy of cup position was less in Crowe group 2 to 4 than in Crowe group 1.

scholarly journals The accuracy of acetabular cup placement in primary total hip arthroplasty using an image-free navigation system

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Yohei Naito ◽  
Masahiro Hasegawa ◽  
Shine Tone ◽  
Hiroki Wakabayashi ◽  
Akihiro Sudo
Keyword(s):  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Navigation System ◽  
Control Group ◽  
Navigation Systems ◽  
Total Hip ◽  
Navigation Group ◽  
The Mean ◽  
Group 2 ◽  
Group 1

Abstract Background Intraoperative navigation systems have been shown to improve the accuracy of acetabular component insertion in total hip arthroplasty (THA). The purpose of this study was to investigate the accuracy of cup orientation in primary THA using an image-free navigation system. Methods A total of 107 consecutive cementless THAs using an image-free navigation system were performed from February 2017 to March 2020 (the navigation group). As a control group, 77 retrospective consecutive cases who underwent THAs with manual implant-techniques between February 2012 and April 2017 were included. Postoperative cup radiographic inclination and radiographic anteversion relative to the functional pelvic plane were assessed using a 3D-template system after computed tomography (CT) examination. Results The mean absolute errors of the postoperative measured angles from the target angles in inclination were 3.4° ± 3.0° in the navigation group and 8.4° ± 6.6° in the control group (p < 0.001). The mean absolute errors in anteversion were 5.1° ± 3.6° in the navigation group and 10.8° ± 6.5° in the control group (p < 0.001). The percentage of cups inside the Lewinnek safe zone was 93% in the navigation group and 44% in the control group (p < 0.001). The mean absolute values of navigation error were 3.3° ± 2.8° in inclination and 5.8° ± 4.9° in anteversion. Among the cases of osteoarthritis, the inclination error was significantly higher in Crowe group 2 to 4 than in Crowe group 1 (5.1° ± 3.5° and 3.0° ± 2.5°, respectively, p < 0.05). The percentage of hips with inclination error over 10° in Crowe group 2 to 4 was significantly higher than in Crowe group 1 (17 and 1%, respectively, p < 0.05). Conclusions The image-free navigation system improved the accuracy of cup orientation. The accuracy of cup position was less in Crowe group 2 to 4 than in Crowe group 1.

Comparison of accuracy of cup position using portable navigation versus alignment guide in total hip arthroplasty in supine position

2020 ◽  
pp. 112070002090878 ◽  
Author(s):  
Masanori Okamoto ◽  
Masashi Kawasaki ◽  
Toshiaki Okura ◽  
Satoshi Ochiai ◽  
Hiroyuki Yokoi
Keyword(s):  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Supine Position ◽  
Navigation System ◽  
Direct Anterior Approach ◽  
Navigation Systems ◽  
Total Hip ◽  
Navigation Group ◽  
Portable Navigation ◽  
Alignment Guide

Background: Accelerometer-based portable navigation systems in supine total hip arthroplasty (THA) have been developed, but there are no reports on the accuracy of cup placement. We aimed to investigate and compare the accuracy of the accelerometer-based portable navigation system versus the acetabular alignment guide placed on the pelvis in THA using the direct anterior approach (DAA). Both devices tracked changes in the pelvic position. Methods: In this single-centre, retrospective study, we reviewed 115 hips in 113 patients who underwent primary THA via the DAA using an accelerometer-based portable navigation system in the supine position (portable navigation group) and 106 hips in 101 patients who underwent THA using an acetabular alignment guide (alignment guide group) as controls. Hips were evaluated postoperatively using computed tomography to measure cup orientation. The accuracy of cup orientation was compared between the 2 groups. Results: Absolute values of inclination error were 3.1° ± 2.2° and 2.9° ± 2.3° ( p = 0.708) in the portable navigation and alignment guide groups and those of anteversion error were 2.8° ± 2.3° and 3.7° ± 2.7°, respectively ( p = 0.005). The number of cups placed within 10° of error was 98.3% and 96.2% in the portable navigation and alignment guide groups, respectively ( p = 0.304). The portable navigation group had significantly more hips (72.2%) placed within a 5° margin of error than did the alignment guide group (56.6%) ( p = 0.016). Conclusion: High accuracy in cup placement was achieved using accelerometer-based portable navigation in supine THA. Using a navigation system may contribute to improved long-term outcomes.

Comparison of the accuracy of CT- and accelerometer-based navigation systems for cup orientation in total hip arthroplasty

2020 ◽  
pp. 112070002090494 ◽  
Author(s):  
Tomonori Tetsunaga ◽  
Kazuki Yamada ◽  
Tomoko Tetsunaga ◽  
Takayuki Furumatsu ◽  
Tomoaki Sanki ◽  
...  
Keyword(s):  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Navigation System ◽  
Pelvic Tilt ◽  
Lateral Decubitus Position ◽  
Absolute Difference ◽  
Navigation Systems ◽  
Total Hip ◽  
Navigation Group ◽  
Lateral Decubitus

Background: The accuracies of various navigation systems in total hip arthroplasty (THA) have been described; however, the accuracy of cup orientation with an accelerometer-based navigation system has not been reported. The purpose of this study was to compare the accuracies of computed tomography (CT)- and accelerometer-based navigation systems for cup orientation in THA. Methods: In this prospective study, 30 patients who underwent cementless THA via anterolateral approach in the lateral decubitus position were analysed. A CT-based navigation system (30 hips) and an accelerometer-based navigation system (30 hips) were used simultaneously. The accuracy of cup orientation (absolute difference between intraoperative vs. postoperative measurements) was compared between the navigation systems using postoperative CT. Results: The accuracy of cup inclination was 3.2 ± 2.4° in the CT-based navigation group and 4.1 ± 3.7° in the accelerometer-based navigation group ( p = 0.3035). The accuracy of cup anteversion was 3.0° ± 2.5° in the CT-based navigation group and 6.8° ± 4.8° in the accelerometer-based navigation group. Cup anteversion was significantly more accurate with the CT-based navigation system than with accelerometer-based navigation ( p = 0.0009). Multiple regression analysis demonstrated that the malposition in cup anteversion was positively correlated with the change in pelvic tilt and loosening of the reference antenna. Conclusions: Although, these results are only true for this specific accelerometer system, cup positioning was significantly more accurate with the CT-based navigation system than an accelerometer-based navigation in the lateral decubitus position. This is because of considerable discrepancies in the sagittal pelvic tilt, resulting in variability in cup anteversion angle with the use of an accelerometer-based navigation system.

Total hip arthroplasty after acetabular fracture: does initial treatment make any difference to the outcome? A 5- to 23-year follow-up with clinical and radiological analysis

2019 ◽  
Vol 30 (3) ◽  
pp. 339-346 ◽  
Author(s):  
Eduardo García-Rey ◽  
Rossella Sirianni ◽  
Eduardo García-Cimbrelo ◽  
Laurent Sedel
Keyword(s):  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Acetabular Fracture ◽  
Initial Treatment ◽  
Acetabular Reconstruction ◽  
Total Hip ◽  
The Mean ◽  
Group 2 ◽  
Group 1

Purpose: To determine if initial treatment affects the outcome of total hip arthroplasty (THA) after acetabular fracture. Methods: 49 patients (49 hips) initially treated non-operatively followed some months later by THA in conjunction with acetabular reconstruction (Group 1) and 29 patients (29 hips) who had undergone THA after a previous osteosynthesis (Group 2) were assessed. The mean follow-up was 11.7 (range 5–23) years. Results: 3 acetabular components were revised for aseptic loosening in Group 1 and 2 in Group 2. The survival rate for cup loosening at 16 years was 90.6% (95% confidence interval [CI], 78.1–100) for Group 1 and 94.1% (95% CI, 86.5–100) for Group 2 ( p = 0.76). There were 2 sciatic palsies in Group 2 after osteosynthesis. The mean preoperative clinical score and postoperative range of mobility were better in Group 1. There were more heterotopic ossifications in Group 2. Conclusion: Despite the good results found in both groups, THA after previous osteosynthesis for acetabular fractures had more complications than a primary THA in conjunction with acetabular reconstruction.

scholarly journals Prospective study comparing functional outcomes and revision rates between hip resurfacing and total hip arthroplasty: preliminary results for 2 years

2013 ◽  
Vol 5 (3) ◽  
pp. 20 ◽  
Author(s):  
Régis Pailhé ◽  
Nicolas Reina ◽  
Etienne Cavaignac ◽  
Akash Sharma ◽  
Valérie Lafontan ◽  
...  
Keyword(s):  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Functional Outcomes ◽  
Hip Resurfacing ◽  
Harris Hip Score ◽  
Preliminary Results ◽  
Total Hip ◽  
Group 2 ◽  
Group 1

There is a need of independent prospective studies about modern generation of hip resurfacing implants. The aim of this propective observational study was to compare the functional outcomes and revision rates with hip resurfacing arthroplasty and total hip arthroplasty and to present the preliminary results at 2 years. Patients included were recruited prospectively in the <em>Partial Pelvic Replacement Hip Project </em>by a single surgeon between January 2007 and January 2010. Patients were assessed with the Harris Hip Score (HHS) and Postel-Merle d’Aubigné (MDA) score and Devane Score. The end point of the study was reoperation for any cause related to the prosthesis. At a mean follow up of 38.6 months there were a total of 142 patients with hip resurfacing (group 1) [100 Durom® (Zimmer Inc., Warsaw, IN, USA) and 42 Birmingham Hip Resurfacing® (Smith &amp; Nephew, Memphis, TN, USA)] and 278 patients with total hip arthroplasty (group 2). The results showed significantly greater gain of HHS, MDA and Devane score with hip resurfacing procedures. However, considering all the complications, the rate was significantly higher in group 16.4% <em>vs</em> 1.79% in group 2 (P&lt;0.0001). In group 1 we observed 6 complications only concerned males with Durom® implants. The follow up of this cohort is still on going and may deliver more information on the evolution of these results in time.

Improving registration accuracy during total hip arthroplasty: a cadaver study of a new, 3-D mini-optical navigation system

2017 ◽  
Vol 28 (1) ◽  
pp. 33-39 ◽  
Author(s):  
Michael B. Cross ◽  
Ran Schwarzkopf ◽  
Theodore T. Miller ◽  
Eric A. Bogner ◽  
Jeffrey M. Muir ◽  
...  
Keyword(s):  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Navigation System ◽  
Cadaver Study ◽  
Mean Difference ◽  
Reference Plane ◽  
Absolute Difference ◽  
Registration Error ◽  
Total Hip ◽  
The Mean

Introduction: Maintaining accuracy of component placement is an important step in ensuring the long-term stability of components during total hip arthroplasty (THA). Computer-assisted navigation has improved accuracy but errors associated with the registration process are known to impact the accuracy of final measurements. The purpose of this cadaver study was to determine the registration error associated with a novel mini-navigation system. Methods: 3 board-certified orthopaedic surgeons performed 4 THA procedures each via the posterolateral approach on 6 cadavers (12 hips) using the mini-navigation tool. Pre- and post-operative radiographs and post-operative computed tomography (CT) images were obtained. Image analysis was performed by 2 radiologists not involved in the surgical procedures. During registration, surgeons aligned the alignment rod with the anterior pelvic plane (APP) to provide a reference plane for comparison with traditional navigation. Cup position from the device was compared with measurements gathered from post-op imaging. Results: The mean difference between CT and device measurements for inclination was -1.7° (standard deviation [SD] 4.9°), while the mean absolute difference was 4.2° (SD 3.2°). The mean difference between anteversion angles calculated from CT scans and from the device was -3.5° (SD 4.5°), with an absolute difference of 4.0° (SD 4.0°). 100% (12/12) of inclination measurements and 92% (11/12) of anteversion measurements fell within both the clinical and statistical limits of agreement when analyzed via the Bland-Altman technique. Conclusions: This study demonstrates that the registration error associated with this new mini-navigation system compares favourably with the known registration error associated with traditional navigation systems.

scholarly journals Comparative Outcomes Assessment: Hip Hemiarthroplasty as an Alternative to THA in Patients with Surgically Pristine Acetabulum—Is There Still a Role?

2013 ◽  
Vol 2013 ◽  
pp. 1-6
Author(s):  
Thomas B. Pace ◽  
Brad Prather ◽  
Brian Burnikel ◽  
Brayton Shirley ◽  
Stephanie Tanner ◽  
...  
Keyword(s):  
Overall Survival ◽  
Survival Rate ◽  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Groin Pain ◽  
Long Term Results ◽  
Overall Survival Rate ◽  
Total Hip ◽  
Group 2 ◽  
Group 1

This is a retrospective review of 243 hip arthroplasties treated with either hemiarthroplasty (61 surgeries-Group 1) or total hip arthroplasty (182 surgeries-Group 2). The mid- to long-term results of relatively similar, predominately young patient cohorts were assessed annually via radiographs and the Harris Hip Scores for pain and clinical function. Groin pain persisted in 16.4% of Group 1 and 5.5% of Group 2 (). Thigh pain persisted in 11.5% of Group 1 and 2.2% of Group 2 (). Complications in Group 1 were 4/61 including 2 revisions with an overall survival rate of 96.7% versus Group 2 complication rate of 29/182 with 15 revisions and an overall survival rate of 91.8%. There were no cases of acetabular protrusio in Group 1, but 2 cases (1%) in Group 2 had cup loosening or osteolysis. Two cases were revised in Group 1 (3.2%). Both were undersized femoral stems. The fifteen revisions (8.2%) in Group 2 included loose stem (1), instability (8), infections (3), cup loosening (2), and accelerated polyethylene wear (1). Hemiarthroplasty has a higher incidence of thigh and groin pain but fewer complications compared with total hip arthroplasty.

scholarly journals Clinical efficacy of OrthoPilot navigation system versus conventional manual total hip arthroplasty: A systematic review and meta‐analysis

2019 ◽  
Vol 47 (2) ◽  
pp. 505-514 ◽  
Author(s):  
Cheng-long Chen ◽  
Peng-fei Han ◽  
Zhi-liang Zhang ◽  
Xiao-juan Sun ◽  
Zhi Lv
Keyword(s):  
Total Hip Arthroplasty ◽  
Clinical Efficacy ◽  
Hip Arthroplasty ◽  
Navigation System ◽  
Meta Analysis ◽  
Operation Time ◽  
Complication Rates ◽  
Total Hip ◽  
Conventional Procedure ◽  
Navigation Group

Objective This study was performed to compare the clinical efficacy between the OrthoPilot navigation system and conventional manual surgery in patients undergoing total hip arthroplasty. Methods The Embase, PubMed, CINAHL, and Cochrane databases were searched for clinical trials. The outcome measurements were the anteversion angle, inclination angle, and complications. Review Manager 5.3 statistical software was used for the data analysis. Results Significant differences were found in the femoral offset and overall complication rate between the conventional and navigation groups. Additionally, the conventional group had significantly less anteversion than the navigation group. However, the navigation group had significantly better inclination. The operation time was significantly shorter in the conventional than navigation group. Conclusion Both the OrthoPilot navigation system and conventional total hip arthroplasty result in significant improvements in patient function with similar overall complication rates and have their own advantages in achieving good cup position. The conventional procedure has a shorter operation time than does use of a navigation system.

scholarly journals Two-stage total hip arthroplasty for primary advanced septic arthritis of the hip in adults: comparison of debridement versus femoral head resection with spacer implantation

2020 ◽  
Author(s):  
Zhenzhong Li ◽  
Congcong Wei ◽  
Xiangke Li ◽  
Mengxuan Yao ◽  
Huijie Li
Keyword(s):  
Total Hip Arthroplasty ◽  
Septic Arthritis ◽  
Pain Score ◽  
Hip Arthroplasty ◽  
Leg Length ◽  
Two Stage ◽  
The Mean ◽  
Group 2 ◽  
Group 1

Abstract Background: To compare the outcomes of debridement and total hip arthroplasty (THA) with antibiotic-loaded spacer implantation and subsequent THA for the treatment of patients affected by primary advanced septic arthritis (SA) of the hip in adults. Methods: All of the 20 patients (20 hips) underwent two-stage surgery. Nine patients were submitted to surgical debridement first, and then THA (group 1), while 11 patients were treated with antibiotic-loaded spacer and subsequent THA (group 2). Patients were evaluated based on the recurrence of infection, Harris hip score, visual analogue scale (VAS) pain score and leg-length discrepancy. Results: No cases of infection, deep vein thrombosis, death, and loosening of hip prosthesis were observed during follow-up. The mean follow-up time was 29.09 ± 10.80 months in group 1, and 28.22 ± 14.80 months in group 2. Before the THA surgery, the mean leg-length discrepancy was 2.80 ± 2.03 cm in group 1, and 0.50 ± 0.23 cm in group 2 (P < 0.05). In the latest follow-up, The Harris hip scores of patients was 90.33 ± 4.85 in group 1 and 94.36 ± 2.34 in group 2 (P < 0.05), respectively. There was no statistical significant difference in VAS pain score of the hip between the two groups (P > 0.05). Conclusions: Antibiotic-loaded spacer and subsequent THA is an effective method for the treatment of advanced SA of the hip in adults due to it can control infection and significantly improve functional hip.

Pharmacological reduction of bleeding during hip endoprosthetic replacement

2012 ◽  
Vol 153 (41) ◽  
pp. 1607-1612 ◽  
Author(s):  
Tamás de Jonge
Keyword(s):  
Total Hip Arthroplasty ◽  
Blood Loss ◽  
Tranexamic Acid ◽  
Hip Arthroplasty ◽  
Red Cells ◽  
Postoperative Blood Loss ◽  
Total Hip ◽  
Group 2 ◽  
Primary Total Hip Arthroplasty ◽  
Group 1

Introduction: Endoprosthetic replacement of the large joints is accompanied by major bleeding. During the last few years several authors reported the perioperative administration of tranexamic acid and its beneficial effect on reducing the blood loss. Objectives: In the present study, the author studied the effect of intravenously administered tranexamic acid in patients undergoing primary total hip arthroplasty in order to examine whether this treatment could reduce postoperative blood loss, the amount of transfused packed red cells, and the cost of the blood saving and/or transfusion. Methods: The author compared retrospectively the data of 104 patients undergoing primary total hip arthroplasty between April, 2010 and December, 2011. 54 patients were administered tranexamic acid (Group 1) and 50 patients were treated without tranexamic acid (Group 2). The amount of postoperative bleeding, haemoglobin, hematocrit, red blood cell count, and the number of units of the transfused packed red cells were recorded. Cost effectiveness of treatment with tranexamic acid was calculated. Results: Postoperative blood loss in Group 1 was 732 ml (210–1280 ml), and in Group 2 1092 ml (420–2640 ml). Ten of the 54 patients in Group 1 had to be transfused, and the all-over need was 20 units of packed red cells. 49 of the 50 patients in Group 2 received 98 units of allogenic blood. Thromboembolic complication was not observed in connection with the use of tranexamic acid. The reduction of blood loss with the application of tranexamic acid and the transfused packed red cells cost in average 5,180 HUF per patient in Group 1 and 15,850 HUF in Group 2. Conclusions: Intravenous administration of tranexamic acid reduces effectively the transfusion rate and the blood loss in the postoperative period in patients undergoing primary total hip arthroplasty. More than 1.5 million HUF and 240 units of packed red cells could be yearly saved with the introduction of this simple, safe and cheap method of drug administered blood conservation. Orv. Hetil., 2012, 153, 1607–1612.

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