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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/29895143/chemometric-modeling-of-coffee-sensory-notes-through-their-chemical-signatures-potential-and-limits-in-defining-an-analytical-tool-for-quality-control
#2
Davide Bressanello, Erica Liberto, Chiara Emilia Irma Cordero, Barbara Sgorbini, Patrizia Rubiolo, Gloria Pellegrino, Manuela Rosanna Ruosi, Carlo Bicchi
Aroma is a primary hedonic aspect of a good coffee. Coffee aroma quality is generally defined by cup tasting, which however is time-consuming in terms of panel training and alignment, and too subjective. It is challenging to define a relationship between chemical profile and aroma sensory impact, but it might provide an objective evaluation of industrial products. This study aimed to define the chemical signature of coffee sensory notes, to develop prediction models based on analytical measurements for use at the control level...
June 12, 2018: Journal of Agricultural and Food Chemistry
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/29657851/kinematic-alignment-technique-for-total-hip-and-knee-arthroplasty-the-personalized-implant-positioning-surgery
#4
Charles Rivière, Stefan Lazic, Loïc Villet, Yann Wiart, Sarah Muirhead Allwood, Justin Cobb
Conventional techniques for hip and knee arthroplasty have led to good long-term clinical outcomes, but complications remain despite better surgical precision and improvements in implant design and quality.Technological improvements and a better understanding of joint kinematics have facilitated the progression to 'personalized' implant positioning (kinematic alignment) for total hip (THA) and knee (TKA) arthroplasty, the true value of which remains to be determined.By achieving a true knee resurfacing, the kinematic alignment (KA) technique for TKA aims at aligning the components with the physiological kinematic axes of the knee and restoring the constitutional tibio-femoral joint line frontal and axial orientation and soft-tissue laxity...
March 2018: EFORT Open Reviews
https://www.readbyqxmd.com/read/29657844/spine-hip-relations-in-patients-with-hip-osteoarthritis
#5
Charles Rivière, Stefan Lazic, Louis Dagneaux, Catherine Van Der Straeten, Justin Cobb, Sarah Muirhead-Allwood
Patients with hip osteoarthritis often have an abnormal spine-hip relation (SHR), meaning the presence of a clinically deleterious spine-hip and/or hip-spine syndrome.Definition of the individual SHR is ideally done using the EOS® imaging system or, if not available, with conventional lumbopelvic lateral radiographs.By pre-operatively screening patients with abnormal SHR, it is possible to refine total hip replacement (THR) surgical planning, which may improve outcomes.An important component of the concept of kinematically aligned total hip arthroplasty (KA THA) consists of defining the optimal acetabular cup design and orientation based on the assessment of an individual's SHR, and use of the transverse acetabular ligament to adjust the cup positioning...
February 2018: EFORT Open Reviews
https://www.readbyqxmd.com/read/29642512/finite-element-simulations-of-hard-on-soft-hip-joint-prosthesis-accounting-for-dynamic-loads-calculated-from-a-musculoskeletal-model-during-walking
#6
Alessandro Ruggiero, Massimiliano Merola, Saverio Affatato
The hip joint replacement is one of the most successful orthopedic surgical procedures although it involves challenges to overcome. The patient group undergoing total hip arthroplasty now includes younger and more active patients who require a broad range of motion and a longer service lifetime for the replacement joint. It is well known that wear tests have a long duration and they are very expensive, thus studying the effects of geometry, loading, or alignment perturbations may be performed by Finite Element Analysis...
April 9, 2018: Materials
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
#7
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/29560393/the-direct-anterior-approach-for-acetabular-augmentation-in-primary-total-hip-arthroplasty
#8
Erin Honcharuk, Stephen Kayiaros, Lee E Rubin
Addressing acetabular bone defects can be difficult and depends on the amount of bone loss. Augments, either with bone or highly porous metals, are options that still allow the use of a hemispherical cup. Almost all previous research and publication on acetabular augments have focused on revision hip arthroplasty utilizing either a modified lateral or a posterolateral surgical approach. We describe 3 cases of augmenting acetabular bone defects through a direct anterior approach for primary total hip arthroplasty...
March 2018: Arthroplasty Today
https://www.readbyqxmd.com/read/29482087/the-impact-of-hip-implant-alignment-on-muscle-and-joint-loading-during-dynamic-activities
#9
Casey A Myers, Peter J Laz, Kevin B Shelburne, Dana L Judd, Daniel N Huff, Joshua D Winters, Jennifer E Stevens-Lapsley, Paul J Rullkoetter
BACKGROUND: Component alignment is an important consideration in total hip arthroplasty. The impact of changes in alignment on muscle forces and joint contact forces during dynamic tasks are not well understood, and have the potential to influence surgical decision making. The objectives of this study were to assess the impact of femoral head/stem and cup component placement on hip muscle and joint contact forces during tasks of daily living and to identify which alignment parameters have the greatest impact on joint loading...
March 2018: Clinical Biomechanics
https://www.readbyqxmd.com/read/29380712/history-of-intranasal-splints
#10
REVIEW
J Lau, H A Elhassan, N Singh
OBJECTIVE: Intranasal splints have long been utilised as a post-operative adjunct in septoplasty, intended to reduce the risk of adhesions and haematoma formation, and to maintain alignment during healing. METHODS: A Medline literature review of the history and evolution of intranasal splint materials and designs was performed. Advantages and disadvantages of various splints are discussed. RESULTS: Intranasal splints fashioned from X-ray film were first reported in 1955...
March 2018: Journal of Laryngology and Otology
https://www.readbyqxmd.com/read/29345620/functional-role-of-the-type-1-pilus-rod-structure-in-mediating-host-pathogen-interactions
#11
Caitlin N Spaulding, Henry Louis Schreiber, Weili Zheng, Karen W Dodson, Jennie E Hazen, Matt S Conover, Fengbin Wang, Pontus Svenmarker, Areli Luna-Rico, Olivera Francetic, Magnus Andersson, Scott Hultgren, Edward H Egelman
Uropathogenic E. coli (UPEC), which cause urinary tract infections (UTI), utilize type 1 pili, a chaperone usher pathway (CUP) pilus, to cause UTI and colonize the gut. The pilus rod, comprised of repeating FimA subunits, provides a structural scaffold for displaying the tip adhesin, FimH. We solved the 4.2 Å resolution structure of the type 1 pilus rod using cryo-electron microscopy. Residues forming the interactive surfaces that determine the mechanical properties of the rod were maintained by selection based on a global alignment of fimA sequences...
January 18, 2018: ELife
https://www.readbyqxmd.com/read/29322072/plan-in-2-d-execute-in-3-d-an-augmented-reality-solution-for-cup-placement-in-total-hip-arthroplasty
#12
Javad Fotouhi, Clayton P Alexander, Mathias Unberath, Giacomo Taylor, Sing Chun Lee, Bernhard Fuerst, Alex Johnson, Greg Osgood, Russell H Taylor, Harpal Khanuja, Mehran Armand, Nassir Navab
Reproducibly achieving proper implant alignment is a critical step in total hip arthroplasty procedures that has been shown to substantially affect patient outcome. In current practice, correct alignment of the acetabular cup is verified in C-arm x-ray images that are acquired in an anterior-posterior (AP) view. Favorable surgical outcome is, therefore, heavily dependent on the surgeon's experience in understanding the 3-D orientation of a hemispheric implant from 2-D AP projection images. This work proposes an easy to use intraoperative component planning system based on two C-arm x-ray images that are combined with 3-D augmented reality (AR) visualization that simplifies impactor and cup placement according to the planning by providing a real-time RGBD data overlay...
April 2018: Journal of Medical Imaging
https://www.readbyqxmd.com/read/29313319/early-experience-with-a-tapered-titanium-porous-plasma-sprayed-stem-with-updated-design
#13
Antonio G Manocchio, Keith R Berend, Michael J Morris, Joanne B Adams, Adolph V Lombardi
INTRODUCTION: The Taperloc® Complete femoral stem (Zimmer Biomet, Warsaw, Indiana) builds on the widespread clinical success of the original Taperloc design used since 1982. Enhancements to the Complete design include a lowered caput-collum-diaphyseal (CCD) angle from 138° to 133° for improved offset, optimized neck taper with polished neck flats to increase range of motion, reduced distal geometry to improve proximal canal fill, and gradual off-loading that is the goal of tapered geometry...
December 22, 2017: Surgical Technology International
https://www.readbyqxmd.com/read/29250498/perioperative-comparison-of-hip-arthroplasty-using-the-direct-anterior-approach-with-the-posterolateral-approach
#14
Sang Hong Lee, Sin Wook Kang, Suenghwan Jo
Purpose: The aim of the current study is to report the advantage and disadvantage of total hip arthroplasty performed in direct anterior approach (DAA) by comparing it to the posterolateral approach (PLA). Materials and Methods: Twenty-five hip arthroplasty done in DAA (12 total hip arthroplasty [THA] and 13 bipolar hemiarthroplasty [BHA]) were compared with the same number done in PLA (13 THA and 12 BHA). Intraoperative assessments including operation time, anesthetic time, bleeding amount were recorded with intraoperative complications...
December 2017: Hip & Pelvis
https://www.readbyqxmd.com/read/29236207/factors-related-to-disagreement-in-implant-size-between-preoperative-ct-based-planning-and-the-actual-implants-used-intraoperatively-for-total-hip-arthroplasty
#15
Takeshi Ogawa, Masaki Takao, Takashi Sakai, Nobuhiko Sugano
PURPOSE: In total hip arthroplasty, prediction of the optimal implant size is important in order to prevent perioperative complications. However, it is not easy to achieve complete agreement between the planned size and the actual size required appropriate implant fit. No previous report has adequately discussed the factors related to mismatch between predicted and actual implant sizes. The purpose was to report the results of a single surgeon case series of patients undergoing THA using computed tomography (CT)-based templating and the possible factors related to implant size mismatch...
April 2018: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/29202192/enhancing-nutrition-with-pulses-defining-a-recommended-serving-size-for-adults
#16
REVIEW
Christopher P F Marinangeli, Julianne Curran, Susan I Barr, Joanne Slavin, Seema Puri, Sumathi Swaminathan, Linda Tapsell, Carol Ann Patterson
Pulses, defined as dry-harvested leguminous crops, include several varieties of beans, peas, lentils, and chickpeas. There is no consensus around a recommended serving size of pulses within a balanced diet, which prevents the development of transregional strategies that rely on consistent messaging to drive increases in consumption. The purpose of this review is to define and disseminate an appropriate target for a minimum serving size of pulses on any given day that can be used in international or collaborative strategies to promote the consumption of pulses...
December 1, 2017: Nutrition Reviews
https://www.readbyqxmd.com/read/29122687/is-anatomic-acetabular-orientation-related-to-pelvic-morphology-ct-analysis-of-150-healthy-pelvises
#17
P Sautet, H Giorgi, P Chabrand, P Tropiano, J-N Argenson, S Parratte, B Blondel
BACKGROUND: Links between sagittal spinal alignment and acetabular orientation attract considerable research attention with the goal of optimising prosthetic cup position. However, whether pelvic incidence (PI) is related to anatomic acetabular orientation remains unknown. We therefore conducted a radiological study with the following objectives: to look for correlations between PI and anatomic acetabular parameters; to describe the sacro-pubic angle (SPA), defined by fixed bony pelvic landmarks, and its relations with acetabular anteversion; and to determine whether anatomical parameters (PI and SPA) correlate with demographic characteristics...
May 2018: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/29056127/transverse-acetabular-ligament-as-an-anatomical-landmark-for-intraoperative-cup-anteversion-in-primary-total-hip-replacement
#18
Mohammed Hatem Salal
OBJECTIVE: To assess the results of the use of transverse acetabular ligament (TAL) as an intraoperative indicator for acetabular cup anteversion alignment during total hip replacement. STUDY DESIGN: Case series. PLACE AND DURATION OF STUDY: The Nursing Home Hospital in Baghdad Medical City Complex, Baghdad, Iraq, from October 2014 to June 2015. METHODOLOGY: Patients were operated through a posterolateral approach for primary total hip arthroplasty (THA) in which transverse acetabular ligament (TAL) was identified and used as indicator for cup anteversion...
October 2017: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/28934535/quantification-of-imaging-error-in-the-measurement-of-cup-position-a-cadaveric-comparison-of-radiographic-and-computed-tomography-imaging
#19
Ran Schwarzkopf, Jonathan M Vigdorchik, Theodore T Miller, Eric A Bogner, Jeffrey M Muir, Michael B Cross
Postoperative radiographs remain the standard for assessment of component placement following total hip arthroplasty (THA), despite the known limitations of radiographs. Computed tomography (CT) scanning offers improved accuracy, but its costs and radiation exposure are prohibitive. The authors performed a cadaver study to compare the error associated with radiographs with that of CT scans following THA. The authors also compared imaging with a novel mini-navigation system. Three board-certified orthopedic surgeons each performed 4 THA procedures (6 cadavers, 12 hips) via the posterior approach using a mini-navigation tool to assist with component placement...
September 21, 2017: Orthopedics
https://www.readbyqxmd.com/read/28927561/interobserver-and-intraobserver-reliability-of-three-dimensional-preoperative-planning-software-in-total-hip-arthroplasty
#20
Yasushi Wako, Junichi Nakamura, Michiaki Miura, Yuya Kawarai, Masahiko Sugano, Kento Nawata
BACKGROUND: The purpose of this study is to clarify interobserver and intraobserver reliabilities of the three-dimensional (3D) templating of total hip arthroplasty (THA). METHODS: We selected preoperative computed tomography from 60 hips in 46 patients (14 men and 32 women) who underwent primary THA. To evaluate interobserver and intraobserver reliability, 6 orthopedic surgeons performed 3D templating twice over a 4-week interval. We investigated intraclass correlation coefficients (ICCs) and percent agreement of component size and alignment, comparing morphological differences in the hip...
February 2018: Journal of Arthroplasty
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