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https://www.readbyqxmd.com/read/28928998/early-onset-prosthetic-joint-infection-and-bacteremia-due-to-campylobacter-fetus-subspecies-fetus
#1
Igor Dumic, Mohan Sengodan, Joni J Franson, Diego Zea, Poornima Ramanan
Campylobacter fetus is a zoonotic pathogen that occasionally causes serious, relapsing, invasive disease, especially in immunocompromised hosts. We report a case of relapsing C. fetus diarrheal illness in a 75-year-old woman which resulted in secondary bacteremia and seeding of the left knee prosthetic joint. Patient responded favorably to debridement and retention of prosthesis in addition to six weeks of meropenem followed by chronic oral doxycycline suppressive therapy.
2017: Case Reports in Infectious Diseases
https://www.readbyqxmd.com/read/28924355/revision-total-knee-arthroplasty-using-the-modern-constrained-condylar-knee-prosthesis
#2
Naoki Nakano, Tomoyuki Matsumoto, Hirotsugu Muratsu, Kazunari Ishida, Ryosuke Kuroda, Masahiro Kurosaka
OBJECTIVE: To determine whether the second-generation constrained condylar prosthesis provided satisfactory results in revision total knee arthroplasty. METHODS: A series of 41 cases of revision total knee arthroplasty using the second-generation constrained condylar knee prosthesis was reviewed. The series comprised 7 men and 34 women with a mean age of 73.2 years. The original diagnosis was predominantly osteoarthritis. The most common reason for revision surgery was aseptic loosening...
November 2016: Acta Ortopedica Brasileira
https://www.readbyqxmd.com/read/28918523/focal-metallic-inlay-resurfacing-prosthesis-for-the-treatment-of-localized-cartilage-defects-of-the-femoral-condyles-a-systematic-review-of-clinical-studies
#3
REVIEW
Andreas Fuchs, Helge Eberbach, Kaywan Izadpanah, Gerrit Bode, Norbert P Südkamp, Matthias J Feucht
PURPOSE: To systematically review the results of focal metallic inlay resurfacing prosthesis for the treatment of isolated cartilage defects of the femoral condyles. METHODS: A systematic electronic search of the PubMed database and the Cochrane Library was performed in April 2017 to identify studies that reported clinical or radiographic outcome of focal metallic inlay resurfacing prosthesis for the treatment of isolated cartilage defects of the femoral condyles...
September 16, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28918227/bone-remodeling-of-the-distal-femur-after-uncemented-total-knee-arthroplasty-a-2-year-prospective-dxa-study
#4
Mikkel Rathsach Andersen, Nikolaj S Winther, Thomas Lind, Henrik M Schrøder, Michael Mørk Petersen
Loss of bone stock as a response to the bone trauma, immobilization, and stress shielding related to joint replacement surgery increases the risk of fracture of the distal femur after total knee arthroplasty. Previous studies of uncemented femoral components have reported very high levels of bone loss in the distal femur. This study investigates the adaptive bone remodeling of the distal femur after uncemented total knee arthroplasty. We performed a 2-year follow-up of 53 patients (mean age 61.5 [38-70] years, F/M = 27/26, body mass index 29...
September 13, 2017: Journal of Clinical Densitometry
https://www.readbyqxmd.com/read/28911945/long-term-follow-up-and-survivorship-of-single-radius-posterior-stabilized-total-knee-arthroplasty
#5
Moon Jong Chang, Sangyeon So, Chan-Deok Park, Jai Gon Seo, Young-Wan Moon
BACKGROUND: We sought to determine the 10-year survivorship of single-radius, posterior-stabilized total knee arthroplasty (TKA) in Asian patients. We also aimed to determine whether the long-term clinical and radiographic results differed between patients with and without patellar resurfacing. METHODS: This retrospective study included 148 (115 patients) consecutive single-radius, posterior-stabilized TKAs. Ten-year survivorship analysis was performed using the Kaplan-Meier method with additional surgery for any reason as the end-point...
September 11, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28886100/biomechanical-evaluation-of-tibial-bone-adaptation-after-revision-total-knee-arthroplasty-a-comparison-of-different-implant-systems
#6
María Paz Quilez, Belen Seral, María Angeles Pérez
The best methods to manage tibial bone defects following total knee arthroplasty remain under debate. Different fixation systems exist to help surgeons reconstruct knee osseous bone loss (such as tantalum cones, cement, modular metal augments, autografts, allografts and porous metaphyseal sleeves) However, the effects of the various solutions on the long-term outcome remain unknown. In the present work, a bone remodeling mathematical model was used to predict bone remodeling after total knee arthroplasty (TKA) revision...
2017: PloS One
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
#7
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/28883009/total-knee-prosthesis-infected-with-mycobacterium-tuberculosis
#8
Fatehi E Elzein, Mohammed Haris, Saad S Alolayan, Nisreen Al Sherbini
Mycobacterium tuberculosis (MTB) infection of a prosthetic joint is rarely reported in developed countries.(1) Typically, MTB infection involves the hips or knees, and the infection can occur secondary to crushing and degradation of the granuloma during surgery or, less commonly, from distant foci spreading through the blood. In the present case, MTB infection likely resulted from haematogenous spread since multiple hot spots suggestive of MTB infection were noted in other sites. Early diagnosis allows for antitubercular therapy with retention of the prosthesis, while late diagnosis frequently results in removal and reimplantation of the joint...
September 7, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28870303/patient-satisfaction-after-total-knee-arthroplasty-a-realistic-or-imaginary-goal
#9
REVIEW
Emmanuel Gibon, Marla J Goodman, Stuart B Goodman
This article summarizes the current literature regarding patient satisfaction after total knee arthroplasty. In 10% to 15% of cases, the operation has not met the patients' expectations. The causes of this dissatisfaction are multifactorial, and include patient-related factors, details related to the surgical procedure and prosthesis chosen, perioperative factors, and factors associated with nursing and general medical care. However, surgeons must bear the brunt of patients' dissatisfaction. This dissatisfaction erodes the doctor-patient relationship, and may have implications in an emerging health care economy in which doctors and hospitals are reimbursed based on both clinical outcome and patient satisfaction...
October 2017: Orthopedic Clinics of North America
https://www.readbyqxmd.com/read/28861592/increased-alertness-better-than-posture-prioritization-explains-dual-task-performance-in-prosthesis-users-and-controls-under-increasing-postural-and-cognitive-challenge
#10
Charla L Howard, Bonnie Perry, John W Chow, Chris Wallace, Dobrivoje S Stokic
Sensorimotor impairments after limb amputation impose a threat to stability. Commonly described strategies for maintaining stability are the posture first strategy (prioritization of balance) and posture second strategy (prioritization of concurrent tasks). The existence of these strategies was examined in 13 below-knee prosthesis users and 15 controls during dual-task standing under increasing postural and cognitive challenge by evaluating path length, 95% sway area, and anterior-posterior and medial-lateral amplitudes of the center of pressure...
August 31, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/28861196/patellofemoral-joint-arthroplasty-early-results-and-functional-outcome-of-the-zimmer-gender-solutions-patello-femoral-joint-system
#11
Donald Osarumwense, Farhan Syed, Obi Nzeako, Segun Akilapa, Omer Zubair, Jon Waite
BACKGROUND: Improved knee prosthesis designs have led to an increase in the use of patellofemoral arthroplasty as a primary treatment option in recent times. We report the early results and outcomes of the Zimmer Gender Solutions Patello-Femoral Joint (PFJ) system used to treat isolated patellofemoral osteoarthritis (PFA). METHODS: We retrospectively reviewed and analysed data of patients who underwent PFJ replacement (PFJR) at our institution with a minimum follow-up of 2 years...
September 2017: Clinics in Orthopedic Surgery
https://www.readbyqxmd.com/read/28860397/diagnosis-of-prosthetic-joint-infection-with-alpha-defensin-using-a-lateral-flow-device-a-multicentre-study
#12
MULTICENTER STUDY
P Berger, M Van Cauter, R Driesen, J Neyt, O Cornu, J Bellemans
AIMS: The purpose of this current multicentre study is to analyse the presence of alpha-defensin proteins in synovial fluid using the Synovasure lateral flow device and to determine its diagnostic reliability and accuracy compared with the prosthetic joint infection (PJI) criteria produced by the Musculoskeletal Infection Society (MSIS). PATIENTS AND METHODS: A cohort of 121 patients comprising 85 total knee arthroplasties and 36 total hip arthroplasties was prospectively evaluated between May 2015 and June 2016 in three different orthopaedic centres...
September 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28854938/the-assessment-of-femoral-shaft-morphology-in-the-sagittal-plane-in-chinese-patients-with-osteoarthritis-a-radiographic-analysis
#13
Zhengyuan Bao, Liang Qiao, Jianghui Qin, Jiacheng Xu, Sheng Zhou, Dongyang Chen, Dongquan Shi, Jin Dai, Yao Yao, Qing Jiang, Zhihong Xu
BACKGROUND: The purpose of this study was to analyze femoral shaft sagittal parameters in Chinese osteoarthritis (OA) patients undergoing total knee arthroplasty (TKA) and identify whether the parameters in the coronal plane could be predictors of those in the sagittal plane. METHODS: Standard long-standing anteroposterior and femoral lateral radiographs of 50 lower limbs in 50 Chinese OA patients were included. Sagittal femoral bowing angle (sFBA), angle between femoral distal anterior cortex axis and sagittal mechanical axis (DACSMA), angle between femoral distal anterior cortex axis and sagittal distal anatomic axis (DACSDAA), and angle between femoral sagittal mechanical axis and sagittal distal anatomic axis (SMADAA) were measured...
August 30, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28854763/early-clinical-outcomes-of-a-new-posteriorly-stabilized-total-knee-arthroplasty-prosthesis-comparisons-with-two-established-prostheses
#14
Nimesh P Jain, Sung Yup Lee, Vivek M Morey, Suri Chong, Yeon Gwi Kang, Tae Kyun Kim
Purpose: We sought to determine whether early clinical performance of new posterior stabilized (PS) knee system, the Vega-PS (Aesculap), is better than that of two established total knee arthroplasty (TKA) prostheses, the E.motion-PS (Aesculap) and the Genesis II (Smith & Nephew) in terms of functional outcomes, patient satisfaction, and incidence of adverse events. Materials and Methods: We compared the clinical outcomes of 206 consecutive TKAs using Vega-PS with those of 205 TKAs using E...
September 1, 2017: Knee Surgery & related Research
https://www.readbyqxmd.com/read/28842793/knee-function-after-limb-salvage-surgery-for-malignant-bone-tumor-comparison-of-megaprosthesis-and-distal-femur-allograft-with-epiphysis-sparing
#15
Sébastien Pesenti, Emilie Peltier, Vincent Pomero, Guillaume Authier, Lionel Roscigni, Elke Viehweger, Jean-Luc Jouve
PURPOSE: Limb salvage surgery is increasingly used for the treatment of distal femur bone sarcomas. Total knee replacement using megaprosthesis and epiphysis-sparing biologic reconstruction using an allograft are widely used in order to preserve joint motion. We aimed to compare the results of these procedures using gait analysis in patients undergoing limb salvage surgery. METHODS: Fifteen patients were included, nine undergoing allograft with epiphysis sparing (Allograft group) and six undergoing megaprosthesis (Megaprosthesis group)...
August 26, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28842073/disarticulation-of-the-knee-analysis-of-an-extended-database-on-survival-wound-healing-and-ambulation
#16
Rachelle Nijmeijer, Henricus G J M Voesten, Joannes H B Geertzen, Pieter U Dijkstra
OBJECTIVE: This study analyzed survival of the amputee patients, wound healing, and ambulation after knee disarticulation (KD). METHODS: Between July 1989 and October 2015, 153 KDs in 138 patients were performed at Nij Smellinghe Hospital, Drachten. Data were retrieved from hospital medical records. Wound healing was analyzed using nonparametric tests. Ambulation was recorded according to the Special Interest Group Amputation Medicine Workgroup Amputation and Prosthetics mobility scale...
September 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28839353/strain-measurements-of-the-tibial-insert-of-a-knee-prosthesis-using-a-knee-motion-simulator
#17
Toshihiro Sera, Yuya Iwai, Takaharu Yamazaki, Tetsuya Tomita, Hideki Yoshikawa, Hisahi Naito, Takeshi Matsumoto, Masao Tanaka
OBJECTIVE: The longevity of a knee prosthesis is influenced by the wear of the tibial insert due to its posture and movement. In this study, we assumed that the strain on the tibial insert is one of the main reasons for its wear and investigated the influence of the knee varus-valgus angles on the mechanical stress of the tibial insert. METHODS: Knee prosthesis motion was simulated using a knee motion simulator based on a parallel-link six degrees-of-freedom actuator and the principal strain and pressure distribution of the tibial insert were measured...
December 2017: Journal of Orthopaedics
https://www.readbyqxmd.com/read/28837689/type-2-diabetes-and-in-hospital-complications-after-revision-of-total-hip-and-knee-arthroplasty
#18
Ana López-de-Andrés, Valentín Hernández-Barrera, Maria A Martínez-Huedo, Manuel Villanueva-Martinez, Isabel Jiménez-Trujillo, Rodrigo Jiménez-García
PURPOSE: To assess the effect of type 2 diabetes (T2DM) on hospital outcomes such as in hospital postoperative complications (IHPC), length of hospital stay (LOHS) and in-hospital mortality (IHM) after the revision of total hip arthroplasty (RHA) and total knee arthroplasty (RKA) and to identify factors associated with IHPC among T2DM patients undergoing these procedures. METHODS: We performed a retrospective study using the Spanish National Hospital Discharge Database, 2005-2014...
2017: PloS One
https://www.readbyqxmd.com/read/28831536/results-with-eight-and-a-half%C3%A2-years-average-follow-up-on-two-hundred-and-eight-e-motion-fp%C3%A2-knee-prostheses-fitted-using-computer-navigation-for-knee-osteoarthritis-in-patients-with-over-ten-degrees-genu-varum
#19
Dominique Saragaglia, Loic Sigwalt, Julia Gaillot, Vincent Morin, Brice Rubens-Duval, Régis Pailhé
PURPOSE: The aim of this study was to analyse the clinical and radiographic results of 208 e-Motion® posterior cruciate-retaining, mobile bearing prostheses (BBraun-Aesculap, Tuttlingen, Germany) fitted using computer navigation, for knee osteoarthritis with a genu varum greater than 10°. METHODS: One hundred ninety-two patients were operated on with 208 e-Motion® prostheses fitted, between January 2006 and December 2011, using the OrthoPilot® computer navigation system...
August 22, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28822943/sound-side-joint-contact-forces-in-below-knee-amputee-gait-with-an-esar-prosthetic-foot
#20
Mohammad Taghi Karimi, Firooz Salami, Amir Esrafilian, Daniel W W Heitzmann, Merkur Alimusaj, Cornelia Putz, Sebastian I Wolf
The incidence of knee and hip joint osteoarthritis in subjects with below knee amputation (BK) appears significantly higher compared to unimpaired subjects, especially in the intact side. However, it is controversial if constant higher loads on the sound side are one of the major factors for an increased osteoarthritis (OA) incidence in subjects with BK, beside other risk factors, e.g. with respect to metabolism. The aim wasto investigate joint contact forces (JCF) calculated by a musculoskeletal model in the intact side and to compare it with those of unimpaired subjects and to further elucidate in how far increased knee JCF are associated with increased frontal plane knee moments...
August 8, 2017: Gait & Posture
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