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Hip prosthesis replacement

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https://www.readbyqxmd.com/read/29145281/cup-revision-involving-retention-of-a-fixed-but-malpositioned-acetabular-component-in-patients-with-poor-general-conditions
#1
Weiping Su, Min Zeng, Yihe Hu, Jianxi Zhu, Long Wang, Jie Xie
This study evaluated the surgical technique and outcomes of cup revision involving retention of a fixed but malpositioned acetabular component in patients with poor general conditions.Between 2007 and 2013, we performed cup revision on 12 hips while retaining a fixed (either cemented or uncemented) but malpositioned acetabular component. Indications for this technique were: malpositioned but fixed acetabular shell; sufficient space for the insertion of the prosthesis; and patients with poor general conditions...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29105561/failure-of-an-accis-metal-on-metal-hip-resurfacing-prosthesis-a-case-report
#2
Martin C Bone, Andrew Naylor
The introduction of coatings on joint replacements was intended to reduce wear volumes, prevent corrosion and reduce metal ion release. However, retrieval analysis to confirm their in vivo performance has been limited. The aim of study was to examine the coating on a retrieved hip prosthesis to determine whether substantial damage or wear had occurred. A single advanced ceramic-coated implant systems titanium niobium nitride-coated hip resurfacing prosthesis was retrieved for examination. Wear volumes and surface roughness were measured to quantify the damage to the articulating surfaces...
November 1, 2017: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/29100185/numerical-evaluation-of-bone-remodelling-and-adaptation-considering-different-hip-prosthesis-designs
#3
Ievgen Levadnyi, Jan Awrejcewicz, José Eduardo Gubaua, Jucélio Tomás Pereira
BACKGROUND: The change in mechanical properties of femoral cortical bone tissue surrounding the stem of the hip endoprosthesis is one of the causes of implant instability. We present an analysis used to determine the best conditions for long-term functioning of the bone-implant system, which will lead to improvement of treatment results. METHODS: In the present paper, a finite element method coupled with a bone remodelling model is used to evaluate how different three-dimensional prosthesis models influence distribution of the density of bone tissue...
October 18, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/29083348/cementless-knee-arthroplasty
#4
Lorenzo Ponziani, Francesco Di Caprio, Renato Meringolo
Total knee replacement is a common treatment for advanced knee osteoarthritis. The most common and widespread method is cemented arthroplasty. As in the prosthetic hip a gradual transition from cemented to uncemented fixation techniques occurred over time, increasing interest is growing also around cementless knee fixation, with the theoretical advantages of preserving the bone stock and obtaining a biological fixation avoiding cement fragmentation. On the basis of the actual knowledge, the uncemented knee prosthesis represents an interesting alternative especially for the patient under 65 years of age, with viable bone quality, in which a biological bone-prosthesis fixation is desirable, while avoiding the drawbacks of cement fragmentation and of the possible future revision of a cemented implant...
October 18, 2017: Acta Bio-medica: Atenei Parmensis
https://www.readbyqxmd.com/read/29067042/a-clinical-study-on-arthroplasty-for-failed-internal-fixation-of-hip-fractures-and-review-of-literature
#5
Feng Mingli, Shen Huiliang, Cao Guanglei, Li Zheng, Lu Shibao, Liu Limin, An Shuai
BACKGROUND & OBJECTIVE: Hip fracture is common osteoporotic fracture associated sometimes with failed internal fixation. Joint replacement is commonly used to salvage failed internal fixation of hip fractures (FIFHF). Our objective was to present the outcome of Arthroplasty after FIFHF in our patients. METHODS: A prospective analysis was made on consecutive patients who underwent prosthetic replacements for FIFHF in Orthopaedics Department of Xuanwu Hospital between June 2012 and January 2015...
July 2017: Pakistan Journal of Medical Sciences Quarterly
https://www.readbyqxmd.com/read/29060129/imu-based-real-time-pose-measurement-system-for-anterior-pelvic-plane-in-total-hip-replacement-surgeries
#6
Zhe Cao, Shaojie Su, Hao Tang, Yixin Zhou, Zhihua Wang, Hong Chen
With the aging of population, the number of Total Hip Replacement Surgeries (THR) increased year by year. In THR, inaccurate position of the implanted prosthesis may lead to the failure of the operation. In order to reduce the failure rate and acquire the real-time pose of Anterior Pelvic Plane (APP), we propose a measurement system in this paper. The measurement system includes two parts: Initial Pose Measurement Instrument (IPMI) and Real-time Pose Measurement Instrument (RPMI). IPMI is used to acquire the initial pose of the APP, and RPMI is used to estimate the real-time pose of the APP...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29049224/primary-stability-in-total-hip-replacement-a-biomechanical-investigation
#7
Paul Schmitz, Boyko Gueorguiev, Ivan Zderic, Christian Pfeifer, Michael Nerlich, Stephan Grechenig
BACKGROUND: In total hip replacement (THR), it is essential to achieve a primary stability to guarantee good long-term results. A novel locking screw hip (LSH)-stem, anchored to the medial cortex of the proximal femur by 5 monocortical locking screws, was developed to overcome the shortcomings of uncemented press-fit and cemented straight stems while simultaneously achieving primary stability. The aim of this study was to investigate the biomechanical competence of the LSH-stem in comparison to an uncemented press-fit stem...
October 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29048688/is-endoprosthetic-replacement-of-the-proximal-femur-appropriate-in-the-comorbid-patient
#8
Arun Khajuria, Jonathon Ward, George Cooper, Jonathon Stevenson, Michael Parry, Lee Jeys
INTRODUCTION: Patients with failed hip arthroplasty requiring extensive femoral reconstruction often present with a multitude of comorbidities. Many treatment options limit initial mobilisation relying on bone graft incorporation. The use of endoprosthetic replacement (EPR), despite often being a "last resort", offers an expeditious solution with early mobilisation that is crucial in the comorbid individual. Many perceive that the surgical insult of EPR is associated with an increased mortality...
October 16, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/29042371/better-early-functional-outcome-after-short-stem-total-hip-arthroplasty-a-prospective-blinded-randomised-controlled-multicentre-trial-comparing-the-collum-femoris-preserving-stem-with-a-zweymuller-straight-cementless-stem-total-hip-replacement-for-the-treatment
#9
Jakob van Oldenrijk, Vanessa A B Scholtes, Loes W A H van Beers, Carel H Geerdink, Bob B A M Niers, Wouter Runne, Mohit Bhandari, Rudolf W Poolman
OBJECTIVES: Primary aim was to compare the functional results at 3 months and 2 years between short and conventional cementless stem total hip arthroplasty (THA). Secondary aim was to determine the feasibility of a double-blind implant-related trial. DESIGN: A prospective blinded randomised controlled multicentre trial in patients with osteoarthritis of the hip. All patients, research assistants, clinical assessors, investigators and data analysts were blinded to the type of prosthesis...
October 16, 2017: BMJ Open
https://www.readbyqxmd.com/read/29027189/evidence-based-recommendations-for-reducing-head-neck-taper-connection-fretting-corrosion-in-hip-replacement-prostheses
#10
Christian M Wight, Brent Lanting, Emil H Schemitsch
INTRODUCTION: This systematic review seeks to summarise the published studies investigating prosthetic design, manufacture and surgical technique's effect on fretting corrosion at the head-neck taper connection, and provide clinical recommendations to reduce its occurrence. METHODS: PubMed, MEDLINE and EMBASE electronic databases were searched using the terms taper, trunnion, cone and head-neck junction. Articles investigating prosthetic design, manufacture and surgical technique's effect on fretting corrosion were retrieved, reviewed and graded according to OCEBM levels of evidence and grades of recommendation...
October 9, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/28964919/prospective-assessment-of-patients-knowledge-and-informational-needs-and-of-surgeon-to-patient-information-transfer-before-and-after-knee-or-hip-arthroplasty
#11
L Billon, B Dcaudin, G Pasquier, A Lons, V Deken-Delannoy, A-F Germe, P Odou, H Migaud
BACKGROUND: Patients are playing an increasingly large role in their own management and must therefore receive clear, complete, and comprehensible information. In the field of hip and knee arthroplasty, little is known about the level of patient knowledge and effectiveness of surgeon-to-patient information transfer. We therefore designed a prospective observational study with the objective of assessing four factors: patient knowledge during management, quality of information transfer, informational needs, and factors associated with the level of knowledge...
September 27, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28948491/acetabular-reconstruction-with-femoral-head-autograft-after-intraarticular-resection-of-periacetabular-tumors-is-durable-at-short-term-followup
#12
Xiaodong Tang, Wei Guo, Rongli Yang, Taiqiang Yan, Shun Tang, Dasen Li
BACKGROUND: Pelvic reconstruction after periacetabular tumor resection is technically difficult and characterized by a high complication rate. Although endoprosthetic replacement can result in immediate postoperative functional recovery, biologic reconstructions with autograft may provide an enhanced prognosis in patients with long-term survival; however, little has been published regarding this approach. We therefore wished to evaluate whether whole-bulk femoral head autograft that is not contaminated by tumor can be used to reconstruct segmental bone defects after intraarticular resection of periacetabular tumors...
December 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28916885/geometric-analysis-and-clinical-outcome-of-two-cemented-stems-for-primary-total-hip-replacement-with-and-without-modular-necks
#13
Marcel Haversath, Christine Wendelborn, Marcus Jäger, Boris Schmidt, Wojciech Kowalczyk, Stefan Landgraeber
INTRODUCTION: Restoration of the physiological biomechanical principles of the hip is crucial in total hip replacement. The aim of this study was to compare an arthroplasty system with different offset options (a: Exeter(®)) with a dual-modular stem (b: Profemur Xm(®)). MATERIALS AND METHODS: A local and an inertial coordinate system were used to assist the description of the components' assembly in the prosthesis. A resection line of the femoral head in standard position was added to the arthroplasties and geometric parameters were measured...
September 15, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28910774/influence-of-hip-prosthesis-size-and-its-coating-area-on-bone-remodelling
#14
B-A Behrens, A Bouguecha, M Lerch, H Windhagen, A Almohallami
We developed a numerical model to describe the bone remodelling process in periprosthetic bone tissues and validated it by means of dual energy X-ray absorptiometry methods (DEXA) with different types of hip implants. In this study we applied the numerical model to investigate the influence of implant size and of the size of the porous coated area on bone remodelling in a periprosthetic human femur in an effort to define properties of implants which would reduce bone remodelling after total hip arthroplasty...
September 11, 2017: IEEE Transactions on Nanobioscience
https://www.readbyqxmd.com/read/28900737/the-benefit-of-the-systematic-revision-of-the-acetabular-implant-in-favor-of-a-dual-mobility-articulation-during-the-treatment-of-periprosthetic-fractures-of-the-femur-a-49-cases-prospective-comparative-study
#15
A Perrin, M Saab, S Putman, K Benad, E Drumez, C Chantelot
INTRODUCTION: The SOFCOT symposium (2005) on periprosthetic fractures of the femur (PFFs) highlighted a high rate of dislocation (15.6% at 6 months) after change of prosthesis. So far, no study has ever proved the benefit of dual-mobility articulation during PFFs revisions. We conducted a comparative study on two prospective cohorts in order to (1) assess the influence of systematic acetabular revision in favor of a double mobility on dislocation rate (2) and in order to evaluate the rate of morbidity associated with this extra surgical procedure...
September 12, 2017: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/28883822/the-role-of-the-chemokine-system-in-tissue-response-to-prosthetic-by-products-leading-to-periprosthetic-osteolysis-and-aseptic-loosening
#16
REVIEW
Tereza Dyskova, Jiri Gallo, Eva Kriegova
Millions of total joint replacements are performed annually worldwide, and the number is increasing every year. The overall proportion of patients achieving a successful outcome is about 80-90% in a 10-20-years time horizon postoperatively, periprosthetic osteolysis (PPOL) and aseptic loosening (AL) being the most frequent reasons for knee and hip implant failure and reoperations. The chemokine system (chemokine receptors and chemokines) is crucially involved in the inflammatory and osteolytic processes leading to PPOL/AL...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28873093/machine-learning-techniques-for-the-optimization-of-joint-replacements-application-to-a-short-stem-hip-implant
#17
Myriam Cilla, Edoardo Borgiani, Javier Martínez, Georg N Duda, Sara Checa
Today, different implant designs exist in the market; however, there is not a clear understanding of which are the best implant design parameters to achieve mechanical optimal conditions. Therefore, the aim of this project was to investigate if the geometry of a commercial short stem hip prosthesis can be further optimized to reduce stress shielding effects and achieve better short-stemmed implant performance. To reach this aim, the potential of machine learning techniques combined with parametric Finite Element analysis was used...
2017: PloS One
https://www.readbyqxmd.com/read/28782077/a-retrospective-study-on-the-relationship-between-altered-native-acetabular-angle-and-vertical-implant-malpositioning
#18
Jorge Rojas, Maria Bautista, Guillermo Bonilla, Omar Amado, Elina Huerfano, Daniel Monsalvo, Adolfo Llinás, José Navas
PURPOSE: Acetabular cup positioning in extreme angles of vertical position affects both stability and long-term survivorship of total hip arthroplasty. The purpose of this study is to determine whether native Sharp's angle is associated with an increased abduction angle of the acetabular component. METHODS: Consecutive patients who underwent primary total hip replacement between February 2012 and August 2015 were included. Vertical positioning of acetabular implant in the antero-posterior post-operative radiographs were measured...
August 7, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28749792/effect-of-socioeconomic-status-on-surgery-waiting-times-and-mortality-after-hip-fractures-in-italy
#19
Alessio Petrelli, Giuliana De Luca, Tania Landriscina, Giuseppe Costa, Roberto Gnavi
BACKGROUND: Reducing inequities is a main goal of the Italian healthcare system. We evaluated socioeconomic differences in delayed surgery and postoperative mortality after a hip replacement after a fracture in Piedmont Region (Italy). METHODS: Cohort study including all people aged ≥65 years hospitalized for a hip fracture in 2007-2010 (n = 21,432). Study outcomes were the following: (1) surgery waiting times >2 days; (2) 30-day, 90-day, and 1-year mortality from admission...
July 24, 2017: Journal for Healthcare Quality: Official Publication of the National Association for Healthcare Quality
https://www.readbyqxmd.com/read/28728303/-enhancing-soft-tissue-reattachment-with-artificial-mesh-in-joint-endoprosthetic-reconstruction-for-bone-tumors
#20
J S Lin, R Chen, W Yan, D D Chen
Objective: To investigate the operative method and clinical application of the BARD(®) Mesh in enhancing joint stability and function of endoprosthetic reconstruction for bone tumors. Methods: From Jan 2013 to Jun 2015, the clinical data of 51 patients aged (44.75±23.18) years underwent wide resection of tumor and endoprosthetic reconstruction using the BARD(®) Mesh were collected. Among them, 27 were male and 24 were female. The surgical treatments received by these patients included 5 shoulder arthroplasties, 12 elbow replacements, 12 hip replacements and 32 knee replacements (including 24 femoral tumors and 8 tibial tumors)...
July 23, 2017: Zhonghua Zhong Liu za Zhi [Chinese Journal of Oncology]
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