keyword
MENU ▼
Read by QxMD icon Read
search

Hip prosthesis

keyword
https://www.readbyqxmd.com/read/28741892/dose-comparison-between-gafchromic-film-xio-and-monaco-treatment-planning-systems-in-a-novel-pelvic-phantom-that-contains-a-titanium-hip-prosthesis
#1
Nicholas Ade, F C P du Plessis
The presence of metallic prostheses during external beam radiotherapy of malignancies in the pelvic region has the potential to strongly influence the dose distribution to the target and to tissue surrounded by the prostheses. This study systematically investigates the perturbation effects of unilateral titanium prosthesis on 6 and 15 MV photon beam dose distributions using Gafchromic EBT2 film measurements in a novel pelvic phantom made out of a stack of nylon slices. Comparisons were also made between the film data and dose calculations made on XiO and Monaco treatment planning systems...
July 25, 2017: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28735470/staged-reimplantation-of-a-total-hip-prosthesis-after-co-infection-with-candida-tropicalis-and-staphylococcus-haemolyticus-a-case-report
#2
Sujeesh Sebastian, Rajesh Malhotra, Ashish Pande, Deepak Gautam, Immaculata Xess, Benu Dhawan
Fungal prosthetic joint infection is a rare complication in total joint arthroplasty. There are no established guidelines for management of these infections. We present a case of a 53-year-old male with a hip joint prosthesis co-infected with Candida tropicalis and Staphylococcus haemolyticus. A two-stage exchange arthroplasty was performed. The patient underwent implant removal, debridement, irrigation with saline solution and application of cement spacer impregnated with vancomycin followed by aggressive antimicrobial treatment in first stage...
July 22, 2017: Mycopathologia
https://www.readbyqxmd.com/read/28728303/-enhancing-soft-tissue-reattachment-with-artificial-mesh-in-joint-endoprosthetic-reconstruction-for-bone-tumors
#3
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]
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
#4
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/28724376/sonication-contribution-to-identifying-prosthetic-joint-infection-with-ralstonia-pickettii-a-case-report-and-review-of-the-literature
#5
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/28716090/clinical-workflow-for-mr-only-simulation-and-planning-in-prostate
#6
Neelam Tyagi, Sandra Fontenla, Michael Zelefsky, Marcia Chong-Ton, Kyle Ostergren, Niral Shah, Lizette Warner, Mo Kadbi, Jim Mechalakos, Margie Hunt
PURPOSE: To describe the details and experience of implementing a MR-only workflow in the clinic for simulation and planning of prostate cancer patients. METHODS: Forty-eight prostate cancer patients from June 2016 - Dec 2016 receiving external beam radiotherapy were scheduled to undergo MR-only simulation. MR images were acquired for contouring (T2w axial, coronal, sagittal), synthetic-CT generation (3D FFE-based) and fiducial identification (3D bFFE-based). The total acquisition time was 25 min...
July 17, 2017: Radiation Oncology
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/28712173/surgical-site-infection-in-orthopaedic-implants-and-its-common-bacteria-with-their-sensitivities-to-antibiotics-in-open-reduction-internal-fixation
#8
Muhammad Qaisar Shah, Muhammad Shoib Zardad, Alamzeb Khan, Sajjad Ahmed, Abdus Saboor Awan, Taj Mohammad
BACKGROUND: Surgical site infection in orthopaedic implants is a major problem, causing long hospital stay, cost to the patient and is a burden on health care facilities. It increases rate of nonunion, osteomyelitis, implant failure, sepsis, multiorgan dysfunction and even death. Surgical site infection is defined as pain, erythema, swelling and discharge from wound site. Surgical site infection in orthopaedic implants is more challenging to the treating orthopaedic surgeon as the causative organism is protected by a biofilm over the implant's surface...
January 2017: Journal of Ayub Medical College, Abbottabad: JAMC
https://www.readbyqxmd.com/read/28702784/cementless-modular-distally-fixed-stem-in-hip-revision-arthroplasty-a-single-center-study-of-132-consecutive-hips
#9
Ali Hashem, Ammar Al-Azzawi, Hasan Riyadh, Sebastian Mukka, Arkan Sayed-Noor
PURPOSE: The use of cementless, modular, distally fixed stem in hip revision arthroplasty has increased during the last decades. We aimed to analyze the early and late postoperative complications, re-operation rate, and survival rate of the MP stem operated at our county hospital with relatively limited caseload. METHODS: In this retrospective study, we included 132 hips operated with MP stem between January 2007-2014. An independent observer reviewed patients' medical records in July 2015 (18-102 months postoperatively, median 52...
July 12, 2017: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/28702398/late-screw-perforation-of-external-iliac-artery-following-acetabular-revision-a-simple-solution-for-a-rare-complication
#10
André Sá Rodrigues, Joana Freitas, Isabel Pinto, Sérgio Sampaio, Rui Pinto
Vascular lesions, although quite rare, are one of the most devastating complications in the context of a hip prosthesis. Therefore, the correct diagnosis is crucial to prevent irreversible damage to the patient. The authors present the case of a 70-year-old Caucasian woman with an ischemic lower limb as consequence of a late perforation of external iliac artery due to an acetabular screw. The issue was resolved by simply cutting part of the screw, avoiding other surgical options that would be much more aggressive for the patient...
May 2017: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/28697197/increased-and-normalized-uptake-of-18-f-fdg-in-a-case-of-bone-periprosthetic-infection-treated-by-antibiotics
#11
Valentina Lavelli, Cristina Ferrari, Artor Niccoli Asabella, Corinna Altini, Francesco Saverio Vella, Giuseppe Rubini
We report the case of a 69 years old man with left hip prosthesis, who presented clinical, biochemical and imaging signs of periprosthetic infection treated with linezolid, an antibacterial agent of the oxazolidinone class. Two weeks after this treatment, a fluorine-18-fluoro-2-deoxy-d-glucose positron emission tomography/computed tomography ((18)F-FDG PET/CT) scan showed increased uptake in the skeleton and also increased uptake in several focal areas in the spine and near the prosthesis and the surgical wound on the left gluteus medius...
July 12, 2017: Hellenic Journal of Nuclear Medicine
https://www.readbyqxmd.com/read/28693543/finite-element-analysis-of-porously-punched-prosthetic-short-stem-virtually-designed-for-simulative-uncemented-hip-arthroplasty
#12
Matthew Jian-Qiao Peng, Hai-Yan Chen, Yong Hu, XiangYang Ju, Bo Bai
BACKGROUND: There is no universal hip implant suitably fills all femoral types, whether prostheses of porous short-stem suitable for Hip Arthroplasty is to be measured scientifically. METHODS: Ten specimens of femurs scanned by CT were input onto Mimics to rebuild 3D models; their *stl format dataset were imported into Geomagic-Studio for simulative osteotomy; the generated *.igs dataset were interacted by UG to fit solid models; the prosthesis were obtained by the same way from patients, and bored by punching bears designed by Pro-E virtually; cements between femora and prosthesis were extracted by deleting prosthesis; in HyperMesh, all compartments were assembled onto four artificial joint style as: (a) cemented long-stem prosthesis; (b) porous long-stem prosthesis; (c) cemented short-stem prosthesis; (d) porous short-stem prosthesis...
July 11, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28688018/current-pathologic-scoring-systems-for-metal-on-metal-tha-revisions-are-not-reproducible
#13
Christiaan Smeekes, Arjen H G Cleven, Bart C H van der Wal, Stefan V Dubois, Remigio W Rouse, Bastiaan F Ongkiehong, Ron Wolterbeek, Rob G H H Nelissen
BACKGROUND: The aseptic lymphocyte vasculitis-associated lesion (ALVAL) score and the modified Oxford ALVAL score are frequently used scoring methods to evaluate the morphologic features of periprosthetic tissues around metal-on-metal (MoM) hip implants. Except for the initial studies of these two morphology scoring methods, to our knowledge, no other studies have reported on intraclass correlation coefficient (ICC) values for interobserver reliability of these scoring methods. QUESTIONS/PURPOSES: Are the ALVAL and Oxford ALVAL scores reproducible? METHODS: The periprosthetic tissue of 37 revisions of 36 patients with failed MoM THAs were independently scored by three experienced pathologists using ALVAL and Oxford ALVAL scoring methods...
July 7, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28662252/chronic-expanding-hematoma-after-metal-on-metal-total-hip-arthroplasty
#14
Wataru Ando, Kengo Yamamoto, Tsuyoshi Koyama, Yoshichika Hashimoto, Hirohiko Yasui, Takashi Tsujimoto, Masaharu Aihara, Kenji Ohzono
A 76-year-old woman who underwent bilateral metal-on-metal total hip arthroplasty fell 3 years after this procedure and subsequently incurred continuous pain in her buttock. Plain radiographs showed no fracture and no loosening of the hip prosthesis. Magnetic resonance imaging revealed an abnormal, large, thick-walled mass with heterogeneous signal intensity at the right buttock. The prerevision diagnosis was adverse reaction to metal debris. The mass was surgically resected, and the metal femoral head was replaced by a dual-mobility prosthesis...
June 29, 2017: Orthopedics
https://www.readbyqxmd.com/read/28661042/cd11b-promotes-the-differentiation-of-osteoclasts-induced-by-rankl-through-the-spleen-tyrosine-kinase-signalling-pathway
#15
Guoxi Yang, Xiaoyong Chen, Zhao Yan, Qingsheng Zhu, Chongfei Yang
Macrophage surface antigen-1 (Mac-1, CD11b/CD18) has been implicated in the regulation of osteoclastogenesis. In the synovial tissues of patients with aseptic loosening after total hip replacement, CD11b was up-regulated, which indicated that CD11b is closely involved in osteolysis around the prosthesis. We found that CD11b, but not CD18, promoted osteoclast (OC) maturation. Here, we show CD11b up-regulated the levels of spleen tyrosine kinase (Syk), c-Fos and nuclear factor of activated T cells, cytoplasmic-1 (NFATc1), as well as the activity of extracellular-regulated kinase (Erk), and as a result, osteoclast precursors (OCPs) differentiated and became tartrate-resistant acid phosphatase (TRAP)-positive...
June 29, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28660477/correlation-of-serum-metal-ion-levels-with-pathological-changes-of-armd-in-failed-metal-on-metal-hip-resurfacing-arthroplasties
#16
George Grammatopoulos, Mitsuru Munemoto, Athanasios Pollalis, Nicholas A Athanasou
BACKGROUND: Metal-on-metal-hip-resurfacing arthroplasties (MoMHRAs) have been associated with an increased failure rates due to an adverse-response-to-metal-debris (ARMD) associated with a spectrum of pathological features. Serum levels of cobalt (Co) and chromium (Cr) are used to assess MoMHRAs, with regard to ARMD, but it is not certain whether ion levels correlate with pathological changes in periprosthetic tissues. METHODS: Serum Co and Cr levels were correlated with histological findings in 38 revised MoMHRAs (29 pseudotumour cases and 9 non-pseudotumour cases revised for pain)...
June 28, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28660436/adventure-sports-and-sexual-freedom-hip-replacement-the-tripolar-hip
#17
James W Pritchett
Certain athletic activities and lifestyles require a completely stable and very mobile hip. Total hip replacement with a natural femoral head size and two mobile-bearing surfaces (i.e., a "tripolar" prosthesis) is the most stable prosthesis. Elegant design and wear-resistant bearing surfaces are the keys to long-term implant survivorship. The hypothesis is that a ceramic-coated tripolar prosthesis using highly cross-linked polyethylene can provide full function and complete stability with low wear. This study sought to determine: (1) patient-reported outcomes, (2) functional outcomes, (3) implant survivorship and complications, and (4) postoperative sexual limitations...
June 28, 2017: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/28658149/a-rare-case-report-enlarged-iliopsoas-cystic-solid-mass-associated-with-femoral-head-necrosis-induced-by-heavy-alcohol-consumption
#18
Chen Li, He Liu, Chenyu Wang, Qing Han, Zhonghan Wang, Yanguo Qin, Jincheng Wang, Tao Yu
RATIONALE: This article presents an unusual case of a large iliopsoas cystic solid mass associated with femoral head necrosis in a patient with heavy alcohol consumption for years. PATIENT CONCERNS: The patient reported pain and limitation of movement at the right hip for 4 months. A soft tissue mass can be palpated deep in the groin several days after the onset of pain. DIAGNOSES: The laboratory assessments indicated an inflammatory response of the patient...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28657567/bone-scan-in-painful-knee-arthroplasty-obsolete-or-actual-examination
#19
Giuseppe Niccoli, Domenico Mercurio, Fabrizio Cortese
ptic loosening, instability and infection are the major causes of TKA failure. For many years, nuclear medicine (NM) imaging was helpful to frame a painful total joint arthroplasty. The differentiation of septic from aseptic prosthetic loosening is critical. The latest AAOS guidelines to detect periprosthetic joint infection (PJI) restrict the role of NM scintigraphy. On the other hand, several studies suggest that NM imaging plays an important role in the evaluation of patients with painful prosthesis, but its specificity in differentiating aseptic loosening from infection is low...
June 7, 2017: Acta Bio-medica: Atenei Parmensis
https://www.readbyqxmd.com/read/28656873/health-related-quality-of-life-with-long-term-retention-of-the-prosthesis-of-antibiotic-loaded-acrylic-cement-system-following-infection-resolution-in-low-demand-patients
#20
Lauren A Beaupre, Kyle Stampe, Edward Masson, Gregory O'Connor, Marcia Clark, A Mark Joffe, Lesia R Boychuk, Guy Lavoie
BACKGROUND: The study purpose was to (1) evaluate health-related quality of life (HRQL) with the PROSthesis of Antibiotic Loaded Acrylic Cement (PROSTALAC) in situ for infected total hip arthroplasty (THA), (2) determine infection resolution, and (3) compare subjects who underwent second stage surgery with those who retained the PROSTALAC on a longer term basis. METHODS: Demographics, physical demand level, and comorbidities were recorded prospectively in 29 subjects followed to at least 24 months after initial PROSTALAC insertion...
May 2017: Journal of Orthopaedic Surgery
keyword
keyword
24994
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"