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https://www.readbyqxmd.com/read/27920813/densitometric-evaluation-of-bone-prosthetic-counterface-in-hip-and-knee-arthroplasty-with-modern-implants
#1
Andrea Cozzi Lepri, Marco Giorgini, Carla Signorini, Christian Carulli, Roberto Civinini, Maria Luisa Brandi, Massimo Innocenti
INTRODUCTION: Recent acquisitions of the complex mechanisms of osseointegration between implants and host bone have gained attention, accordingly to the methods of evaluation of these interactions. DEXA analysis is considered an useful tool to assess such phenomena, in order to analyse in a quantitative manner the local metabolic activity of the bone, and to evaluate over the time the integration between host bone and prosthetic components. The purpose of the present study is to report about a preliminary experience in the analysis of osseointegration processes of patients undergoing a primary Total Hip Arthroplasty (THA) or a revision Total Knee Arthroplasty (rTKA)...
May 2016: Clinical Cases in Mineral and Bone Metabolism
https://www.readbyqxmd.com/read/27919372/does-extended-cpoe-use-reduce-patient-length-of-stay
#2
Darryl Romanow, Arun Rai, Mark Keil, Steven Luxenberg
OBJECTIVE: This study compares use of Computerized Provider Order Entry (CPOE) and related clinical systems (i.e., extended CPOE) across 796 clinical teams caring for five distinct patient conditions. Our focus is the relationship between clinical teams' extended CPOE use and extent of prolonged stay (EPS), defined as the deviation in patients' observed length of stay from expected risk-adjusted length of stay. MATERIALS AND METHODS: Using archival data from two affiliated hospitals in the Southeastern United States, we focused on five different patient conditions of varying mortality risk (vaginal birth, knee/hip replacement, cardiovascular surgery, organ transplant and pneumonia)...
January 2017: International Journal of Medical Informatics
https://www.readbyqxmd.com/read/27916580/annual-revision-rates-of-partial-versus-total-knee-arthroplasty-a-comparative-meta-analysis
#3
REVIEW
Harshvardhan Chawla, Jelle P van der List, Alexander B Christ, Maximiliano R Sobrero, Hendrik A Zuiderbaan, Andrew D Pearle
BACKGROUND: Utilization of unicompartmental knee arthroplasty (UKA) and patellofemoral arthroplasty (PFA) as alternatives to total knee arthroplasty (TKA) for unicompartmental knee osteoarthritis (OA) has increased. However, no single resource consolidates survivorship data between TKA and partial resurfacing options for each variant of unicompartmental OA. This meta-analysis compared survivorship between TKA and medial UKA (MUKA), lateral UKA (LUKA) and PFA using annual revision rate as a standardized metric...
December 1, 2016: Knee
https://www.readbyqxmd.com/read/27914722/poor-expectations-of-knee-replacement-benefit-are-associated-with-modifiable-psychological-factors-and-influence-the-decision-to-have-surgery-a-cross-sectional-and-longitudinal-study-of-a-community-based-sample
#4
Daniel L Riddle, Gregory J Golladay, Amanda Hayes, Hassan M K Ghomrawi
BACKGROUND: Total knee arthroplasty (TKA) is a highly effective surgery, but is underutilized by some patient groups. This study determined factors associated with a person's expectations with respect to pain and walking function following a TKA procedure, should they elect to undergo a TKA. METHODS: A total of 3542 people were studied with or at risk of knee osteoarthritis and enrolled in the community-based Osteoarthritis Initiative (OAI). Multivariable logistic regression analyses identified demographic, socioeconomic, osteoarthritis-related, joint replacement awareness, and psychological correlates as poor outcome expectations...
November 30, 2016: Knee
https://www.readbyqxmd.com/read/27906096/biological-and-functional-evaluation-of-a-novel-pyrolytic-carbon-implant-for-the-treatment-of-focal-osteochondral-defects-in-the-medial-femoral-condyle-assessment-in-a-canine-model
#5
Samantha L Salkeld, Laura P Patron, Joan C Lien, Stephen D Cook, Deryk G Jones
BACKGROUND: Osteochondral defects continue to be a clinical treatment challenge, and when left untreated, may cause pain and functional impairment. Pyrolytic carbon is a unique isotropic biomaterial used in heart valve and small joint replacements due to its excellent wear properties and biocompatibility with bone and articular cartilage. Therefore, a proposed solution is to utilize a focal pyrolytic carbon hemiarthroplasty implant as an alternative resurfacing treatment strategy for isolated cartilage lesions...
December 1, 2016: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/27904224/estimation-of-drug-absorption-in-antibiotic-soaked-bone-grafts
#6
Manish Ramesh Shah, Rukesh R Patel, Randhirsinh V Solanki, Shailendra H Gupta
INTRODUCTION: There is paucity of literature about antibiotic uptake in bone grafts soaked in antibiotic solutions at room temperature in the operation theatre. We hypothesized that if bone grafts are dipped in different strengths of antibiotic solutions for sufficient period, their utilization at the target site helps in localized release of antibiotics in adequate inhibitory concentration to achieve the bacterial regression. The purpose of the study was to find out: (1) Optimum duration, strength, and volume of antibiotic solution required for dipping bone grafts at room temperature prior to the use...
November 2016: Indian Journal of Orthopaedics
https://www.readbyqxmd.com/read/27899003/dietary-intake-of-fiber-in-relation-to-knee-pain-trajectories
#7
Zhaoli Dai, Na Lu, Jingbo Niu, David T Felson, Yuqing Zhang
Objective Dietary fiber may reduce knee pain in part by lowering body weight and inflammation. In this study, we assessed whether fiber intake was associated with knee pain development patterns. Methods In a prospective, multicenter cohort of 4,796 men and women aged 45-79 years with or at risk of knee osteoarthritis in Osteoarthritis Initiative, participants were followed up annually for 8 years. Dietary fiber was estimated using a validated food frequency questionnaire at baseline. Group-based trajectory modeling was used to identify WOMAC pain trajectories, which were assessed for the associations with dietary fiber intake using polytomous regression models...
November 29, 2016: Arthritis Care & Research
https://www.readbyqxmd.com/read/27898194/inflammatory-cell-induced-corrosion-in-total-knee-arthroplasty-a-retrieval-study
#8
Arianna Cerquiglini, Johann Henckel, Harry S Hothi, Anna Di Laura, John A Skinner, Alister J Hart
Metal release in patients with joint replacements is associated with local tissue reactions, pain, and ultimately revision of implants. One of the causes of this metal loss is speculated to be due to a mechanism of inflammatory cell-induced corrosion (ICIC). In this knee retrieval study, we aimed to: (1) identify the extent and location of ICI corrosion patterns on our femoral and tibial components and (2) correlate our findings with implant and clinical information. We investigated 28 femoral and 9 tibial components made of polished CoCr for presence of ICIC, using macroscopic and microscopic screening and statistical analyses to identify any significant correlations between our results and clinical information...
November 29, 2016: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/27895368/does-obesity-affects-early-infection-after-total-knee-arthroplasty-a-comparison-of-obese-vs-non-obese-patients
#9
Waseem Ahmed, Riaz Hussain Lakdawala, Yasir Mohib, Aurangzeb Qureshi, Rizwan Haroon Rashid
Surgical site infection (SSI) is a disastrous complication after total knee arthroplasty (TKA) which can cause prosthesis loosening and may end up in septicaemia. The incidence of infection reported to be in the range of 0.3-12.4% for primary TKA. Significantly higher infection rate is found in the morbidly obese patients. The current study compared the immediate rate of post-total knee replacement wound infection in the obese versus non-obese population. The cross-sectional study was conducted at Aga Khan University Hospital (AKUH) and comprised patients undergoing TKA for primary knee osteoarthritis...
October 2016: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/27895006/patients-need-for-tailored-comparative-health-care-information-a-qualitative-study-on-choosing-a-hospital
#10
Nicolien C Zwijnenberg, Michelle Hendriks, Evelien Bloemendal, Olga C Damman, Judith D de Jong, Diana Mj Delnoij, Jany Jd Rademakers
BACKGROUND: The Internet is increasingly being used to provide patients with information about the quality of care of different health care providers. Although online comparative health care information is widely available internationally, and patients have been shown to be interested in this information, its effect on patients' decision making is still limited. OBJECTIVE: This study aimed to explore patients' preferences regarding information presentation and their values concerning tailored comparative health care information...
November 28, 2016: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/27894147/reliability-concurrent-validity-and-minimal-detectable-change-for-iphone-goniometer-app-in-assessing-knee-range-of-motion
#11
Saurabh P Mehta, Katherine Barker, Brett Bowman, Heather Galloway, Nicole Oliashirazi, Ali Oliashirazi
Much of the published works assessing the reliability of smartphone goniometer apps (SG) have poor generalizability since the reliability was assessed in healthy subjects. No research has established the values for standard error of measurement (SEM) or minimal detectable change (MDC) which have greater clinical utility to contextualize the range of motion (ROM) assessed using the SG. This research examined the test-retest reproducibility, concurrent validity, SEM, and MDC values for the iPhone goniometer app (i-Goni; June Software Inc...
November 28, 2016: Journal of Knee Surgery
https://www.readbyqxmd.com/read/27893033/effect-of-a-decision-aid-on-access-to-total-knee-replacement-for-black-patients-with-osteoarthritis-of-the-knee-a-randomized-clinical-trial
#12
Said A Ibrahim, Marissa Blum, Gwo-Chin Lee, Pekka Mooar, Elina Medvedeva, Aliya Collier, Diane Richardson
Importance: Black patients with advanced osteoarthritis (OA) of the knee are significantly less likely than white patients to undergo surgery. No strategies have been proved to improve access to surgery for black patients with end-stage OA of the knee. Objective: To assess whether a decision aid improves access to total knee replacement (TKR) surgery for black patients with OA of the knee. Design, Setting, and Participants: In a randomized clinical trial, 336 eligible participants who self-identified as black and 50 years or older with chronic and frequent knee pain, a Western Ontario McMaster Universities Osteoarthritis Index score of at least 39, and radiographic evidence of OA of the knee were recruited from December 1, 2010, to May 31, 2014, at 3 medical centers...
November 23, 2016: JAMA Surgery
https://www.readbyqxmd.com/read/27891054/patellofemoral-joint-arthroplasty-our-experience-in-isolated-patellofemoral-and-bicompartmental-arthritic-knees
#13
L Sabatini, M Schirò, F Atzori, G Ferrero, A Massè
INTRODUCTION: Isolated patellofemoral (PF) arthritis is rare, and there is no complete agreement about the best surgical treatment. The operative treatments are total knee arthroplasty and patellofemoral replacement (PFR). The incidence of many early complications of PF arthroplasty has decreased with the introduction of newer designs. Nowadays, the main cause of revision surgery is the progression of tibiofemoral osteoarthritis. In the past, PF arthroplasty was contraindicated in patients with evidence of osteoarthritis or pain in medial or lateral tibiofemoral compartments...
2016: Clinical Medicine Insights. Arthritis and Musculoskeletal Disorders
https://www.readbyqxmd.com/read/27885798/in-their-own-words-a-short-report-of-patients-experiences-of-recovering-from-total-knee-replacement
#14
Sylvia Gautreau, Catherine Aquino-Russell, Odette N Gould, Michael E Forsythe
No abstract text is available yet for this article.
November 24, 2016: Musculoskeletal Care
https://www.readbyqxmd.com/read/27881118/electrolyte-disorders-and-aging-risk-factors-for-delirium-in-patients-undergoing-orthopedic-surgeries
#15
Li-Hong Wang, Dong-Juan Xu, Xian-Jiao Wei, Hao-Teng Chang, Guo-Hong Xu
BACKGROUND: At present, the exact mechanism of postoperative delirium has not been elucidated. The purpose of this study was to analyze the incidence of delirium in patients undergoing orthopedic surgeries and to explore possible related factors. METHODS: This is a retrospective study. We used 582 patients who had undergone orthopedic surgery between January 2011 and December 2014. The surgeries consisted of 155 cases of internal fixation for intertrochanteric fracture (IFIF), 128 cases of femoral head replacement (FHR), 169 cases of total hip arthroplasty (THA) and 130 cases of total knee arthroplasty (TKA)...
November 23, 2016: BMC Psychiatry
https://www.readbyqxmd.com/read/27880970/total-knee-arthroplasty-what-to-expect-a-survey-of-the-members-of-the-dutch-knee-society-on-long-term-recovery-after-total-knee-arthroplasty
#16
Jaap J Tolk, Marieke C van der Steen, Rob P A Janssen, Max Reijman
The rate of satisfaction after total knee arthroplasty (TKA) is consistently reported around 80%, leaving one in five patients unsatisfied to some extent. Fulfillment of expectations is reported as the strongest predictor of treatment satisfaction. In this study, we aimed to evaluate what Dutch orthopedic surgeons assume are realistic expectations for recovery 1 year after TKA. We invited the members of the Dutch Knee Society (DKS) to fill out a web-based questionnaire. For expectation measurement, the validated Dutch version of the Hospital for Special Surgery (HSS) knee replacement expectations survey was used...
November 23, 2016: Journal of Knee Surgery
https://www.readbyqxmd.com/read/27878804/assessment-of-cardiovascular-risk-in-patients-undergoing-total-joint-alloplasty-the-crash-joint-study
#17
Pawel Legosz, Marcin Kotkowski, Anna E Platek, Pawel Maldyk, Bartosz Krzowski, Anna Rys, Karolina Semczuk, Filip M Szymanski, Krzysztof J Filipiak
BACKGROUND: Risk assessment is of particular importance for patients undergoing surgical interventions. Orthopedic procedures, especially total joint alloplasty are major procedure associated with high perioperative risk, as well as one of the highest rates of complications. The aim of the present study was to establish the prevalence of classical and non-classical cardiovascular risk factors in patients undergoing total hip or knee alloplasty. METHODS: The CRASH-JOINT (Cardiovascular Risk Assessment ScHeme in JOINT alloplasty) was a prospective, epidemiological study performed in consecutive patients scheduled for total joint (hip or knee) replacement surgery...
November 23, 2016: Kardiologia Polska
https://www.readbyqxmd.com/read/27869619/five-year-survival-of-20-946-unicondylar-knee-replacements-and-patient-risk-factors-for-failure-an-analysis-of-german-insurance-data
#18
Elke Jeschke, Thorsten Gehrke, Christian Günster, Joachim Hassenpflug, Jürgen Malzahn, Fritz Uwe Niethard, Peter Schräder, Josef Zacher, Andreas Halder
BACKGROUND: Improvements in implant design and surgical technique of unicondylar knee arthroplasty have led to reduced revision rates, but patient selection seems to be crucial for success of such arthroplasties. The purpose of the present study was to analyze the 5-year implant survival rate of unicondylar knee replacements in Germany and to identify patient factors associated with an increased risk of revision, including >30 comorbid conditions. METHODS: Using nationwide billing data of the largest German health-care insurance for inpatient hospital treatment, we identified patients who underwent unicondylar knee arthroplasty between 2006 and 2012...
October 19, 2016: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/27868384/post-acute-rehabilitation-after-total-knee-replacement-a-multicentre-randomized-clinical-trial-comparing-long-term-outcomes
#19
Marlene Fransen, Lillias Nairn, Lisa Bridgett, Jack Crosbie, Lyn March, David Parker Mbbs, Ross Crawford, Alison R Harmer
OBJECTIVE: To evaluate the long-term benefit of providing a post-acute outpatient group exercise program for patients following primary total knee replacement (TKR) surgery for osteoarthritis. METHODS: A multicenter randomized clinical trial conducted in 12 Australian public and private hospital centers. A total of 422 participants, aged 45 to 75 years, were randomly allocated prior to hospital discharge to the post-acute group exercise program or usual care and were assessed six weeks, six months and 12 months after surgery...
November 21, 2016: Arthritis Care & Research
https://www.readbyqxmd.com/read/27859544/lateral-soft-tissue-structures-contribute-to-cruciate-retaining-total-knee-arthroplasty-stability
#20
Kiron K Athwal, Hadi El Daou, Breck Lord, Andrew J Davies, William Manning, Ferdinando Rodriguez Y Baena, David J Deehan, Andrew A Amis
Little information is available to surgeons regarding how the lateral structures prevent instability in the replaced knee. The aim of this study was to quantify the lateral soft-tissue contributions to stability following cruciate-retaining total knee arthroplasty (CR TKA). Nine cadaveric knees were tested in a robotic system at full extension, 30°, 60°, and 90° flexion angles. In both native and CR implanted states, ±90 N anterior-posterior force, ±8 Nm varus-valgus, and ±5 Nm internal-external torque were applied...
November 9, 2016: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
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