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https://www.readbyqxmd.com/read/28725970/ion-release-in-ceramic-bearings-for-total-hip-replacement-results-from-an-in-vitro-and-an-in-vivo-study
#1
Jan Philippe Kretzer, Ulrike Mueller, Marcus R Streit, Hartmuth Kiefer, Robert Sonntag, Robert M Streicher, Joern Reinders
INTRODUCTION: Literature on the potential release of trace elements following implantation of Zirconia-platelet toughened alumina (ZPTA) ceramic components is scant. The present study therefore analysed the in vitro and in vivo potential release of ions from ZPTA bearings. MATERIAL AND METHODS: An in vitro and in vivo study was conducted. The in vitro study compared leaching in bovine serum from two groups: ZPTA ceramic heads and Co-28Cr-6Mo alloy heads, both 28-mm diameter...
July 20, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28725122/two-incisions-direct-anterior-approach-for-thr-surgical-technique-and-early-outcome
#2
Ritesh Rathi, Idriss Tourabaly, Alexis Nogier
PURPOSE: In recent times the direct anterior approach for total hip replacement has gained considerable interest among orthopaedic surgeons because of the relative muscle-sparing nature than other surgical approaches. However, critics believe that this approach is associated with steep learning curve and high complication rates, mainly attributed to a more limited exposure to the femur. In order to make femoral access easier and implantation of acetabulum in anatomic plane, we designed a "two incisions anterior approach technique" for total hip replacement...
September 2017: Journal of Orthopaedics
https://www.readbyqxmd.com/read/28725121/a-comparison-of-the-omega-and-posterior-approaches-on-patient-reported-function-and-radiological-outcomes-following-total-hip-replacement
#3
James R Berstock, Ashley W Blom, Michael R Whitehouse
BACKGROUND: The omega approach represents a modification of the lateral approach to the hip for joint replacement. It was developed to reduce the potential for gluteus muscle dysfunction and thereby improve functional outcome following hip replacement. METHODS: A cohort of 415 consecutive hip replacements receiving the same type of cemented femoral component were followed up at a mean of three years postoperatively and invited to complete functional outcome and satisfaction scores...
September 2017: Journal of Orthopaedics
https://www.readbyqxmd.com/read/28724376/sonication-contribution-to-identifying-prosthetic-joint-infection-with-ralstonia-pickettii-a-case-report-and-review-of-the-literature
#4
Rares Mircea Birlutiu, Mihai Dan Roman, Razvan Silviu Cismasiu, Sorin Radu Fleaca, Crina Maria Popa, Manuela Mihalache, Victoria Birlutiu
BACKGROUND: In the context of an increase number of primary and revision total hip and total knee arthroplasty performed yearly, an increased risk of complication is expected. Prosthetic joint infection (PJI) remains the most common and feared arthroplasty complication. Ralstonia pickettii is a Gram-negative bacterium, that has also been identified in biofilms. It remains an extremely rare cause of PJI. There is no report of an identification of R. pickettii on an extracted spacer loaded with antibiotic...
July 19, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28719557/functional-gain-and-pain-relief-after-total-joint-replacement-according-to-obesity-status
#5
Wenjun Li, David C Ayers, Courtland G Lewis, Thomas R Bowen, Jeroan J Allison, Patricia D Franklin
BACKGROUND: Obesity has been associated with lower function and more pain before and after total hip or knee replacement (THR or TKR). We examined the changes between preoperative and postoperative function and pain in a large representative U.S. cohort to determine if there was a relationship to obesity status. METHODS: Preoperative and 6-month postoperative data on function (Short Form-36 Physical Component Summary [PCS] score), joint pain (Hip disability and Osteoarthritis Outcome Score and Knee injury and Osteoarthritis Outcome Score), and body mass index (BMI) were collected from a national sample of 2,040 patients who had undergone THR and 2,964 who had undergone TKR from May 2011 to March 2013...
July 19, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28715928/lack-of-evidence-the-anti-stepwise-introduction-of-metal-on-metal-hip-replacements
#6
Aleksi Reito, Lari Lehtovirta, Olli Lainiala, Keijo Mäkelä, Antti Eskelinen
Background and purpose - Orthopedics and especially joint replacement surgery have had more than their fair share of unsuccessful innovations that have violated widely endorsed principles for the introduction of new surgical innovations. We aimed to investigate (1) the trends in the use of the Birmingham Hip Resurfacing (BHR), the ASR hip resurfacing (ASR HRA) and the ASR XL total hip replacement (ASR XL THR) system with very different market approval processes and (2) whether their use was corroborated by clinical trials published in the peer-reviewed literature...
July 18, 2017: Acta Orthopaedica
https://www.readbyqxmd.com/read/28715055/risk-of-surgical-site-infections-following-hip-and-knee-arthroplasty-results-of-the-ischia-gisio-study
#7
A Agodi, F Auxilia, M Barchitta, M L Cristina, D D'Alessandro, I Mura, M Nobile, C Pasquarella, Gisio Gisio-SItI
BACKGROUND: Surgical Site Infection (SSI) is one of the major complications following insertion of hip or knee prosthesis. The aim of the present study was to describe rates of SSIs and associated risk factors during hip and knee prosthesis procedures in Italian hospitals. METHODS: Italian hospitals were invited to join the ISChIA (Surgical Site Infections in Arthroplasty Surgery) project and participated in the study on a voluntary basis. SSI surveillance was performed according to the Hospitals in Europe Link for Infection Control through Surveillance (HELICS) -SSI protocol...
September 2017: Annali di Igiene: Medicina Preventiva e di Comunità
https://www.readbyqxmd.com/read/28711361/does-crutch-length-influence-gait-parameters-after-total-hip-replacement-surgery
#8
Marco Freddolini, Francesco Esposito, Massimiliano Marcucci, Andrea Corvi, Palmina Braccio, Leonardo Latella
After total hip replacement surgery, crutches are often prescribed to enable patients to walk independently. Purpose of this study was to evaluate possible crutch length influence on gait performance and symmetry, including spatiotemporal and kinetics parameters. Thirty patients were randomly assigned to elbow flexed (EF) or elbow extended (EE) crutch setup. Subjects were asked to walk on the laboratory path, instrumented with motion tracking system and force platforms. Spatiotemporal gait parameters and ground reaction force (GRF) parameters for both limbs and crutch support were evaluated...
July 10, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28709931/non-invasive-vibrometry-based-diagnostic-detection-of-acetabular-cup-loosening-in-total-hip-replacement-thr
#9
Abdullah A Alshuhri, Timothy P Holsgrove, Anthony W Miles, James L Cunningham
Total hip replacement is aimed at relieving pain and restoring function. Currently, imaging techniques are primarily used as a clinical diagnosis and follow-up method. However, these are unreliable for detecting early loosening, and this has led to the proposal of novel techniques such as vibrometry. The present study had two aims, namely, the validation of the outcomes of a previous work related to loosening detection, and the provision of a more realistic anatomical representation of the clinical scenario...
July 11, 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/28709659/in-vivo-hip-joint-loads-and-pedal-forces-during-ergometer-cycling
#10
P Damm, J Dymke, A Bender, G Duda, G Bergmann
The rising prevalence of osteoarthritis and an increase in total hip replacements calls for attention to potential therapeutic activities. Cycling is considered as a low impact exercise for the hip joint and hence recommended. However, there are limited data about hip joint loading to support this claim. The aim of this study was to measure synchronously the in vivo hip joint loads and pedal forces during cycling. The in vivo hip joint loads were measured in 5 patients with instrumented hip implants. Data were collected at several combinations of power and cadence, at two saddle heights...
July 5, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28707829/-total-hip-arthroplasty-in-patients-younger-than-50-years
#11
Matthieu Zingg, Morgan Gauthier, Didier Hannouche
Total hip replacement can provide pain relief and restore function in patients suffering from hip arthritis, including in those under the age of 50. However, shortened implant longevity in this age group has been a concern because the clinical results after revision surgery are inferior to those after primary hip arthroplasty. Technical choices (approach, implants, type of fixation and bearing couple) must be made to maximise longevity based on published data and thoroughly discussed with the patient. Finally, long term results (clinical outcome and implant longevity) associated with this surgery are such that it appears unnecessary to postpone the surgery once the indication is established...
December 14, 2016: Revue Médicale Suisse
https://www.readbyqxmd.com/read/28706379/plasma-level-of-osteopontin-does-not-respond-to-total-replacement-surgery-in-patients-with-severe-primary-knee-hip-osteoarthritis
#12
Ramy Abdelnaby, Sameh El Deeb, Ali Khachab, Klaus Bläsius, Markus Tingart, Björn Rath
OBJECTIVE: To test the response of Osteopontin levels in patients with knee/hip Osteoarthritis undergoing a replacement surgery. METHOD: Plasma samples of 30 (16 with knee Osteoarthritis and 14 with hip Osteoarthritis) patients have been collected before and 3 month after a knee/hip replacement in order to investigate the above stated aim of this study. RESULT: Osteopontin levels did not decrease after 3 months of the surgery. CONCLUSION: Osteopontin levels showed no significant reduction and therefore do not respond to replacement treatment...
September 2017: Journal of Orthopaedics
https://www.readbyqxmd.com/read/28705605/age-of-menarche-is-associated-with-knee-joint-replacement-due-to-primary-osteoarthritis-the-hunt-study-and-the-norwegian-arthroplasty-register
#13
Alf Inge Hellevik, Lars Nordsletten, Marianne Bakke Johnsen, Anne Marie Fenstad, Ove Furnes, Kjersti Storheim, John Anker Zwart, Gunnar Flugsrud, Arnulf Langhammer
OBJECTIVE: To investigate whether parity, age at menarche, menopausal status, age at menopause, use of oral contraceptives or use of hormone replacement therapy (HRT) were associated with total knee replacement (TKR) or total hip replacement (THR) due to primary osteoarthritis. METHOD: In a prospective cohort study of 30 289 women from the second and third surveys of the Nord-Trøndelag Health Study, data were linked to the Norwegian Arthroplasty Register in order to identify TKR or THR due to primary osteoarthritis...
July 10, 2017: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/28705547/closed-incision-negative-pressure-therapy-effects-on-postoperative-infection-and-surgical-site-complication-after-total-hip-and-knee-arthroplasty
#14
Roberta E Redfern, Claire Cameron-Ruetz, Simone K O'Drobinak, John T Chen, Karl J Beer
BACKGROUND: The aim of this study is to determine whether negative pressure wound therapy, used prophylactically in clean surgical incisions, reduces surgical site infection, hematoma, and seroma after total joint replacement. METHODS: A single center, open-label study with a prospective cohort of patients undergoing primary total knee arthroplasty or total hip arthroplasty treated with closed incision negative pressure therapy (ciNPT) of clean surgical wounds was conducted...
June 17, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28704684/root-mean-square-of-lower-trunk-acceleration-during-walking-in-patients-with-unilateral-total-hip-replacement
#15
Osamu Wada, Tsuyoshi Asai, Yoshinori Hiyama, Shingo Nitta, Kiyonori Mizuno
Although several studies have described abnormal trunk motion before and after total hip arthroplasty (THA) surgery, few studies have examined trunk motion using accelerometry. The aim of this study was to determine whether abnormal trunk motion persisted after THA using accelerometry. A total of 24 female patients (61.0±6.9years) and 20 healthy female subjects (59.9±6.8years) participated in this study. Patients were assessed at 1 month prior to surgery and 12 months after surgery. Trunk acceleration during gait was measured using a triaxial accelerometer attached to the L3 spinous process...
July 8, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28702399/bilateral-simultaneous-neck-femur-fracture-following-domestic-fall-in-an-elderly-patient-a-rare-case-report
#16
Mayank Vijayvargiya, Vivek Shetty, Kiran Makwana, Nitesh Agarwal
Simultaneous bilateral neck femur fracture is a rare entity that has been associated with underlying bone disease, various metabolic diseases, high-energy trauma, and seizure disorders. Its occurrence following minimal trauma is very rare. This article presents the case of a 66-year-old female who sustained bilateral intracapsular fracture neck femur following a slip and fall at home. Single-stage bilateral cemented total hip replacement was done using a direct lateral approach with alternate right and left lateral positions...
May 2017: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/28702381/importance-of-preclinical-evaluation-of-wear-in-hip-implant-designs-using-simulator-machines
#17
REVIEW
Rafael Mello Trommer, Márcia Marie Maru
Total hip arthroplasty (THA) is a surgical procedure that involves the replacement of the damaged joint of the hip by an artificial device. Despite the recognized clinical success of hip implants, wear of the articulating surfaces remains as one of the critical issues influencing performance. Common material combinations used in hip designs comprise metal-on-polymer (MoP), ceramic-on-polymer (CoP), metal-on-metal (MoM), and ceramic-on-ceramic (CoC). However, when the design of the hip implant is concerned besides the materials used, several parameters can influence its wear performance...
May 2017: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/28697400/an-adaptive-finite-element-simulation-of-fretting-wear-damage-at-the-head-neck-taper-junction-of-total-hip-replacement-the-role-of-taper-angle-mismatch
#18
Khosro Fallahnezhad, Reza H Oskouei, Hojjat Badnava, Mark Taylor
An adaptive finite element simulation was developed to predict fretting wear in a head-neck taper junction of hip joint implant through a two dimensional (2D) model and based on the Archard wear equation. This model represents the most critical section of the head-neck junction which was identified from a 3D model of the junction subjected to one cycle of level gait loading. The 2D model was then used to investigate the effect of angular mismatch between the head and neck components on the material loss and fretting wear process over 4 million gait cycles of walking...
July 4, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28695187/infection-burden-in-total-hip-and-knee-arthroplasties-an-international-registry-based-perspective
#19
Bryan D Springer, September Cahue, Caryn D Etkin, David G Lewallen, Brian J McGrory
BACKGROUND: Infection remains a leading cause of failure of hip and knee replacements. Infection burden is the ratio of implants revised for infection to the total number of arthroplasties in a specific period, measuring the steady state of infection in a registry. We hypothesized infection burden would be similar among arthroplasty registries. METHODS: We evaluated publicly reported data from 6 arthroplasty registries (Australian Orthopaedic Association National Joint Replacement Registry [AOANJRR], New Zealand Joint Registry, Swedish Hip Arthroplasty Register, Swedish Knee Arthroplasty Register, National Joint Registry of England, Wales, Northern Ireland, and the Isle of Man, and the American Joint Replacement Registry) for revisions performed with an infection diagnosis over the last 6 years...
June 2017: Arthroplasty Today
https://www.readbyqxmd.com/read/28693888/do-patient-expectations-influence-patient-reported-outcomes-and-satisfaction-in-total-hip-arthroplasty-a-prospective-multicenter-study
#20
Deeptee Jain, Ilya Bendich, Long-Co L Nguyen, Long L Nguyen, Courtland G Lewis, James I Huddleston, Paul J Duwelius, Brian T Feeley, Kevin J Bozic
BACKGROUND: The relationship between patient expectations and patient-reported outcomes (PROs) in total hip arthroplasty (THA) patients is controversial. The purpose of this study was to examine the impact of preoperative patient expectations on postoperative PROs and patient satisfaction. METHODS: This was a prospective multicenter observational cohort study of primary THA patients. Preoperatively, patients completed Hospital for Special Surgery (HSS) Hip Replacement Expectations Survey (expectations), 12 item Short Form Survey (SF-12), University of California, Los Angeles (UCLA) activity score, and Hip Disability and Osteoarthritis Score (HOOS)...
June 16, 2017: Journal of Arthroplasty
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