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Cup version THA

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https://www.readbyqxmd.com/read/29895480/risk-factors-and-cup-protrusion-thresholds-for-symptomatic-iliopsoas-impingement-after-total-hip-arthroplasty-a-retrospective-case-control-study
#1
Takuro Ueno, Tamon Kabata, Yoshitomo Kajino, Daisuke Inoue, Takaaki Ohmori, Hiroyuki Tsuchiya
BACKGROUND: Groin pain and functional limitations may occur after total hip arthroplasty (THA) due to iliopsoas impingement (IPI). We aimed to determine the risk factors and thresholds of cup protrusion for symptomatic IPI. METHODS: This retrospective case-control study evaluated 569 primary THAs performed by a single surgeon in a single center. In all THAs, the cup was inserted with the assistance of the computed tomography-based navigation system. Twenty-two THAs (3...
May 17, 2018: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29869012/accuracy-of-plain-antero-posterior-radiographic-based-methods-for-measurement-of-acetabular-cup-version
#2
Mohammad Ali Alzohiry, Mohammad Kamal Abdelnasser, Mohamed Moustafa, Mohamed Mahran, Hatem Bakr, Yaser Khalifa, Ahmed Abelaal, Haisam Atta, Galal Zaki Said
INTRODUCTION: Acetabular cup version is crucial for successful total hip arthroplasty (THA). Many methods have been described for measurement of cup version angle. The aim of this study is to assess the accuracy of five commonly used methods for measurement of acetabular cup version in plain antero-posterior views of the pelvis and hip. MATERIAL AND METHODS: Sixty primary THA cases were subjected postoperatively to plain A-P of the pelvis (AP-P), A-P view of the hip (AP-H), and computed tomography (CT) imaging...
June 4, 2018: International Orthopaedics
https://www.readbyqxmd.com/read/29783888/patient-positioning-and-cup-orientation-during-total-hip-arthroplasty-assessment-of-current-uk-practice
#3
Megan Rutherford, John D O'Connor, Janet C Hill, David E Beverland, Alex B Lennon, Nicholas J Dunne
INTRODUCTION: Acetabular cup orientation during total hip arthroplasty (THA) remains a challenge. This is influenced by patient positioning during surgery and the method used to orientate the acetabular cup. The aim of this study was to assess current UK practice for patient positioning and cup orientation, particularly with respect to patient supports and techniques used to achieve target version and inclination. METHODS: A literature review and pilot study were initially conducted to develop the questionnaire, which was completed by British Hip Society members ( n = 183)...
May 1, 2018: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/29611147/effect-of-improved-navigation-performance-on-the-accuracy-of-implant-placement-in-total-hip-arthroplasty-with-a-ct-based-navigation-system
#4
Ichiro Nakahara, Takayuki Kyo, Yasuo Kuroda, Hidenobu Miki
A computed tomography (CT)-based navigation system is one of the support tools to place implant with appropriate alignment and position in total hip arthroplasty (THA). To determine whether the higher performance of the navigation would further improve the accuracy of implant placement in the clinical setting, we retrospectively compared the navigation accuracy of two different versions of a navigation system. The newer version of the navigation system had an upgraded optical sensor with superior positional accuracy...
April 2, 2018: Journal of Artificial Organs: the Official Journal of the Japanese Society for Artificial Organs
https://www.readbyqxmd.com/read/29581068/total-hip-arthroplasty-after-a-previous-pelvic-osteotomy-a-systematic-review-and-meta-analysis
#5
T Shigemura, Y Yamamoto, Y Murata, T Sato, R Tsuchiya, Y Wada
BACKGROUND: There are several reports regarding total hip arthroplasty (THA) after a previous pelvic osteotomy (PO). However, to our knowledge, until now there has been no formal systematic review and meta-analysis published to summarize the clinical results of THA after a previous PO. Therefore, we conducted a systematic review and meta-analysis of results of THA after a previous PO. We focus on these questions as follows: does a previous PO affect the results of subsequent THA, such as clinical outcomes, operative time, operative blood loss, and radiological parameters...
June 2018: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/29322899/is-the-pelvis-stable-during-supine-total-hip-arthroplasty
#6
S M Shah, W L Walter, J Ngo
Intra- operative changes in pelvic position during total hip arthroplasty (THA) can affect acetabular orientation. We evaluated these changes during supine THA using a proprietary mobile application called PelvicTracker. Twenty- two patients undergoing THA using direct anterior approach were included in the study. In the sagittal plane, the pelvis was extended (anterior tilt) as compared to the start of surgery in 19/ 22 hips at the time of cup implantation (mean extension: 3.1°; range: 1°-6°). In the transverse plane, the pelvis was rolled to the opposite side of surgery in 12 hips (mean roll: 2...
March 2017: Acta Orthopaedica Belgica
https://www.readbyqxmd.com/read/29312852/acetabular-cup-version-modelling-and-its-clinical-applying-on-plain-radiograms
#7
Anton Denisov, Stanislav Bilyk, Anton Kovalenko
AIM: To measure the sensitivity and specificity of the cup version assessment by using only anteroposterior hip and pelvis views, evaluate the incidence of inadequate cup version in patients with repeated dislocations after total hip arthroplasty (THA). METHODS: Radiographic retrospective analysis of 2 groups of patients, with follow up of 6-60 mo, after undergoing primary THA. First group of 32 patients (20 female, 12 male) with unilateral THA (32 hips) required early revision arthroplasty for reasons of dislocation...
December 18, 2017: World Journal of Orthopedics
https://www.readbyqxmd.com/read/28885650/the-posterior-acetabular-wall-paw-an-aid-to-acetabular-orientation-at-primary-tha
#8
Huw L M Williams, Gavin E Bartlett, Mark R Norton, Rory G Middleton
INTRODUCTION: Incorrect acetabular component positioning during total hip arthroplasty (THA) may lead to dislocation, impingement, wear and revision. Surgeons commonly use the transverse acetabular ligament (TAL) as a landmark for acetabular component orientation. The posterior acetabular wall (PAW) is a structure easily viewed on plain radiography and its position can help guide acetabular component position. In this study, we examine the efficacy of preoperative radiographs in predicting cup position relative to the PAW...
January 2018: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/28809641/cementless-total-hip-arthroplasty-in-primary-myelofibrosis-a-case-report
#9
S Brodt, E Eigendorff, G Matziolis
There is a great deal of data available, in part contradictory, on the best fixation technique to use for total hip arthroplasty (THA) in hip osteoarthritis. Both the cementless and the cemented versions offer excellent long-term outcomes - if the respective technique is applied correctly. However, as far as we know, no recommendation has been made regarding cemented vs. cementless THA in primary myelofibrosis. The case described here concerns a very active 76-year-old patient with primary myelofibrosis. This is a rare hematological disease...
2017: Acta Chirurgiae Orthopaedicae et Traumatologiae Cechoslovaca
https://www.readbyqxmd.com/read/28217831/blood-metal-ion-concentrations-in-metal-on-metal-total-hip-arthroplasty
#10
COMPARATIVE STUDY
Tadahiko Ohtsuru, Yuji Morita, Yasuaki Murata, Shuji Shimamoto, Yutaro Munakata, Yoshiharu Kato
INTRODUCTION: The hip placement with a metal-on-metal (MOM) bearing has been used for both surface replacement and total hip arthroplasty (THA). Use of MOM bearing for hip replacement reduces the wear compared to conventional bearings. METHODS: We prospectively assessed 30 patients who underwent unilateral MOM THA. A control group of 30 patients who underwent metal-on-polyethylene THA using the implants as the other group, except for bearing, were accessed. Blood samples were collected preoperatively and at 3- , 6- , 9- , 12- , 15- , 18- , and 24-month intervals...
May 2017: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/27646313/native-femoral-anteversion-should-not-be-used-as-reference-in-cementless-total-hip-arthroplasty-with-a-straight-tapered-stem-a-retrospective-clinical-study
#11
RANDOMIZED CONTROLLED TRIAL
Michael Worlicek, Markus Weber, Benjamin Craiovan, Michael Wörner, Florian Völlner, Hans R Springorum, Joachim Grifka, Tobias Renkawitz
BACKROUND: Improper femoral and acetabular component positioning can be associated with instability, impingement, component wear and finally patient dissatisfaction in total hip arthroplasty (THA). The concept of "femur first"/"combined anteversion", incorporates various aspects of performing a functional optimization of the prosthetic stem and cup position of the stem relative to the cup intraoperatively. In the present study we asked two questions: (1) Do native femoral anteversion and anteversion of the implant correlate? (2) Do anteversion of the final broach and implant anteversion correlate? METHODS: In a secondary analysis of a prospective controlled trial, a subgroup of 55 patients, who underwent computer-assisted, cementless THA with a straight, tapered stem through an anterolateral, minimally invasive (MIS) approach in a lateral decubitus position were examined retrospectivly...
September 20, 2016: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/27640188/prospective-two-year-subsidence-analysis-of-100-cemented-polished-straight-stems-a-short-term-clinical-and-radiological-observation
#12
Wolf Siepen, Lukas Zwicky, Karl Kilian Stoffel, Thomas Ilchmann, Martin Clauss
BACKGROUND: Cemented stems show good long-term results and the survival of new implants can be predicted by their early subsidence. With EBRA-FCA (Femoral Component Analysis using Einzel-Bild-Röntgen-Analyse) early subsidence as an early indicator for later aseptic loosening can be analysed. For the cemented TwinSys stem mid- and long-term data is only avalible from the New Zeeland Arthroplasty register, thus close monitoring of this implant system is still mandatory. METHODS: We conducted a 2 year follow up of 100 consecutive hybrid THA (Total hip arthroplasty) of a series of 285 primary THA operated between Jan 2009 und Oct 2010...
September 17, 2016: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/27536629/total-hip-arthroplasty-using-metal-head-on-a-highly-cross-linked-polyethylene-liner
#13
Min-Yook Kim, Young-Yool Chung, Ji-Hoon Park, Jung-Ho Lee
PURPOSE: This retrospective study was performed to evaluate the clinical results and measure polyethylene liner wear in total hip arthroplasty (THA) with highly cross-linked polyethylene. MATERIALS AND METHODS: Except for patients who had died or were unable to have follow-up at least 2 years, 60 of 78 hips that underwent THA were included this study. The mean age was 64.5 years (range, 25-81 years) and the mean body mass index (BMI) was 23.0 kg/m(2) (18.1-32.3 kg/m(2))...
December 2015: Hip & Pelvis
https://www.readbyqxmd.com/read/27396233/the-cementless-fibre-mesh-coated-anatomic-femoral-stem-12-to-23-years-clinical-and-radiological-outcome-study
#14
Vahit Emre Ozden, Goksel Dikmen, Onder I Kilicoglu, Burak Beksac, Ismail Remzi Tozun
INTRODUCTION: The aim of this study was to assess the long-term clinical and radiographic results, and possible reasons for failure of two versions of the cementless fibre-metal coated anatomical femoral component. METHODS: 99 patients (119 hips) were evaluated at an average of 16.7 years (range, 12 to 23 years) following primary THA. Developmental dysplasia of the hip (DDH) was the most common pathology (n = 37 hips). Structural femoral head autografts were used to increase cup coverage in 23 hips...
September 29, 2016: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/26896752/novel-measurement-method-on-plain-radiographs-to-predict-postoperative-stem-anteversion-in-cementless-tha
#15
Markus Weber, Benedikt Messmer, Michael Woerner, Joachim Grifka, Tobias Renkawitz
Preoperative knowledge of femoral stem anteversion can reduce instability and impingement especially using the standard "cup first" technique in cementless total hip arthroplasty (THA). In this study, we asked whether stems at risk of retroversion or high anteversion (>20°) can be detected preoperatively using hip radiographs in two planes (anteroposterior and Lauenstein). In 123 patients undergoing cementless THA using a non-anatomic, non-modular, straight stem, low centered hip radiographs in two planes were obtained preoperatively and three-dimensional computed tomography (3D-CT) 6 week postoperatively...
November 2016: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/26876943/the-prevalence-of-positive-findings-on-metal-artifact-reduction-sequence-magnetic-resonance-imaging-in-metal-on-metal-total-hip-arthroplasty
#16
Kevin Lindgren, Mike B Anderson, Christopher L Peters, Christopher E Pelt, Jeremy M Gililland
BACKGROUND: We sought to assess the prevalence of soft tissue changes seen on magnetic resonance imaging (MRI) after metal-on-metal (MOM) total hip arthroplasty (THA) and determine if the presence of pseudotumors was associated with metal ion levels, acetabular cup position, outcomes scores, and femoral head size. METHODS: After receiving an institutional review board exemption for secondary data analysis, we performed a cross-sectional study identifying 55 patients (55 hips) that underwent primary THA with a MOM articulation and had subsequent MRI imaging between February 2013 and February 2014 at a single academic medical center...
July 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/26611727/three-dimensional-in-vivo-difference-between-native-acetabular-version-and-acetabular-component-version-influences-iliopsoas-impingement-after-total-hip-arthroplasty
#17
Kwan Kyu Park, Tsung-Yuan Tsai, Dimitris Dimitriou, Young-Min Kwon
PURPOSE: The potential influence of acetabular component orientation on iliopsoas impingement in total hip arthroplasty (THA) has not been previously quantified. The aim of the present study was to utilize pre- and post-operative CT-based 3D models to quantify iliopsoas impingement on acetabular components, and to identify any potential factors associated with iliopsoas impingement. METHODS: Iliopsoas muscle was modelled from pre-operative CT scans and transferred to the post-operative 3D models in 19 THAs...
September 2016: International Orthopaedics
https://www.readbyqxmd.com/read/26515043/clinical-results-and-metal-ion-levels-after-ceramic-on-metal-total-hip-arthroplasty-a-mean-50-month-prospective-single-center-study
#18
Zeng Yi, Zheng Bo, Shen Bin, Yang Jing, Zhou Zongke, Pei Fuxing
BACKGROUND: The aim of our study was to investigate the clinical results and serum metal ion levels in a cohort of patients who received total hip arthroplasty (THA) with ceramic-on-metal (CoM) bearings. METHODS: From September 2009 to December 2011, 78 patients (89 hips) who underwent THA with CoM bearings were involved in this study. Harris Hip Score, Short-Form 12, and Western Ontario and McMaster Universities Osteoarthritis Index scores were measured and radiographs were taken for radiographic analysis...
February 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/26508498/a-critical-analysis-of-radiographic-factors-in-patients-who-develop-dislocation-after-elective-primary-total-hip-arthroplasty
#19
Marion Opperer, Yuo-yu Lee, Francisco Nally, Alvaro Blanes Perez, Kaveh Goudarz-Mehdikhani, Alejandro Gonzalez Della Valle
PURPOSE: In order to diminish total hip arthroplasty (THA) dislocation rate, surgeons strive to achieve adequate component orientation, offset and limb length. In addition, dislocation rate can theoretically be reduced by increasing head diameter and by choosing implants with favorable head-to-neck and cup-to head ratios. We assessed nine radiographic and implant-related parameters associated with an increased risk of dislocation in patients who sustained a dislocation and in those with a stable arthroplasty...
April 2016: International Orthopaedics
https://www.readbyqxmd.com/read/26489381/abductor-biomechanics-clinically-impact-the-total-hip-arthroplasty-dislocation-rate-a-prospective-long-term-study
#20
Eduardo García-Rey, Eduardo García-Cimbrelo
BACKGROUND: Factors related to the patient, implant, and surgery have been associated to the rate of dislocation for total hip arthroplasty (THA). We ask if the position of the cup and the reconstruction of the abductor mechanism actually lower the THA dislocation rate. METHODS: We evaluated 1318 patients (1414 hips) undergoing cementless THA between 1992 and 2012. All THAs had a 28- or a 32-mm femoral head size. Hip reconstruction was radiologically assessed evaluating cup position and the hip rotation center according to Ranawat...
February 2016: Journal of Arthroplasty
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