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Hip prothesis

Zhan-feng Zhang, Ji-kang Min, Jian-ming Zhong, Dan Wang
OBJECTIVE: To explore mid-term follow up results of distal fixation prosthesis in treating unstable intertrochanteric fractures in elderly patients. METHODS: From May 2008 to March 2014,58 elderly patients with unstable intertrochanteric were treated with distal fixation prosthesis, among them, there were 15 males and 43 females aged from 75 to 87 years old with an average of 83.2 years old. Fracture were classified according to Evans classification, 39 cases were type I c and 19 cases were type I d...
June 2016: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
Zhentao Man, Dan Sha, Shui Sun, Tao Li, Bin Li, Guang Yang, Laibo Zhang, Changshun Wu, Peng Jiang, Xiaojuan Han, Wei Li
Total hip arthroplasty (THA) is a common procedure for the treatment of end-stage hip joint disease, and the demand for revision THA will double by 2026. Ti6Al4V (Titanium, 6% Aluminum, and 4% Vanadium) is a kind of alloy commonly used to make hip prothesis. To promote the osseointegration between the prothesis and host bone is very important for the revision THA. The peptide Arg-Gly-Asp (RGD) could increase cell attachment and has been used in the vascular tissue engineering. In this study, we combined the RGD with Ti6Al4V alloy using the covalent cross-linking method to fabricate the functional Ti6Al4V alloy (FTA)...
2016: BioMed Research International
Hong Chen, Jiyang Gao, Shaojie Su, Xu Zhang, Zhihua Wang
To improve the positioning accuracy of implants in Total Hip Replacement (THR) surgeries, a visual-aided wireless monitoring system for THR surgery is proposed in this paper. This system aims to measure and display the contact distribution and relative pose between femoral head and acetabulum prosthesis during the surgery to help surgeons obtain accurate position of implants. The system consists of two parts: the Sensors Array Measuring System (SAMS) and the display part. The SAMS is composed of a sensors array (including contact sensors and an image sensor), signal conditioning circuits, a low power microcontroller (MCU), and a low-power transceiver...
April 2015: IEEE Transactions on Biomedical Circuits and Systems
Jeff Chien-Fu Lin, Cheng-Chun Wu, Chi Lo, Wen-Miin Liang, Chi-Fung Cheng, Chang-Bi Wang, Yu-Jun Chang, Hsi-Chin Wu, Tsai-Hsueh Leu
BACKGROUND: This study assessed the mortality and complications of hip fractures using in-patients aged 20-40 years from a nationwide population database in Taiwan. METHODS: Subjects were selected from Taiwan's National Health Insurance Research Database for the period 2000-2008, and these subjects were followed up until the end of 2010. A total of 5,079 (3,879 male and 1,200 female) subjects were admitted for the first time with primary diagnosis of hip fracture and treated with operation...
2014: BMC Musculoskeletal Disorders
Gabriele Gazzotti, Giovanni Matino, Christos Tsatsis, GianLuigi Sacchetti, Paolo Baudi, Fabio Catani
Background. Superior cut-out of a lag screw remains a serious complication in the treatment of trochanteric or subtrochanteric fractures and it is related to many factors: the type of fracture, osteoporosis and the stability of fracture reduction. Little is known about the outcome after revision surgery for complications of the gamma nail. We assessed the outcome in patients who had revision surgery because of lag screw's cut out after gamma nailing for a trochanteric fracture.Material and Method. We present a study of 20 consecutive patients who underwent treatment after 20 cut-out of the lag screw fixation of a trochanteric fracture with Gamma Locking Nail from September 2004 to November 2010...
2014: Acta Bio-medica: Atenei Parmensis
Shu-zhen Li, Zong-han Lin, Yue-ping Chen, Hui Gao, Wei Cui, Qie Fan
OBJECTIVE: To evaluate the difference of clinical outcomes and radiological outcomes through meta-analysis on the total hip arthroplasty (THA) between hydroxyapatite(HA) coating and non-HA coating femoral stems. METHODS: We searched the MEDLINE, Embase, Cochrane library and CBM for published randomized controlled trial (RCT) comparing HA coating and non-HA coating femoral stems in primary THA clinical outcomes with Harris hip score and incidence postoperative thigh pain, radiological outcomes with presence of endosteal condensation and radioactive line on the prothesis, heterotopic ossification...
July 2013: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
J P Delagoutte, D Mainard, P J Wallerich, P Kauffmann, B Goudot
Type III fractures of the femur after total arthroplasty of the hip are, for us, the equivalent of fracture of the femoral neck for old patients. Indeed, they occur later in the life than the other types of fracture, they are often spiral, caused by torsion and after a banal fall.The complications of osteosynthesis are frequent (40%) and severe (non union, malrotation, infection...). It is not reasonable to exchange the prothesis with a longer implant because this operation and the mortality are greater. On the contrary, it is necessary to improve the technic of osteosynthesis which, in our series, is often open to criticism...
December 1995: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
E Gagneux, L Jeunet, P Vichard
The number of femoral fractures after hip arthroplasty has increased proportionally to the number of hip arthroplasties. Eleven university-orthopaedic centers in eastern France co-operated to review 250 femoral fractures in relation to hip prothesis. This is the largest published review. The aims of this retrospective study were: - an epidemiologic study of the predisposing factors of these fractures, - to define a protocol of therapeutic indications.
December 1995: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
Xian-lin Zeng, Jing-feng Li, Shu-hua Yang, Qi-xin Zheng, Zhen-wei Zou
The purpose of the present study was to observe the structure and functional change of the bone-coating-prosthesis interface in vivo and to evaluate the histocompatibility of self-made prosthetic femoral components in the body and the degree of their bonding with the surrounding bone tissues as well as their stability. Six mature beagle dogs underwent bilateral hip replacement with prosthetic femur components. Three groups were established in terms of different coating of prothesis (four joints in each group): atmosphere (A) plasma-sprayed pure titanium (Ti) prosthetic joint with hydroxyapatite (HA) coating (HA+Ti+A group); vacuum (V) plasma-sprayed pure Ti prosthetic joint with HA coating (HA+Ti+V group); vacuum plasma-sprayed pure Ti prosthetic joint with Ti-HA stepped coating (Ti+HAG+Ti+V group)...
August 2013: Journal of Huazhong University of Science and Technology. Medical Sciences
P L J Dautzenberg, B H T Buurman, A J M Loonen, C J Wouters, M G M Olde Rikkert
Fear of falling in a fall clinic for geriatric patients: a pilot study Objective. In this pilot study we wantto determine how often fear of falling occurs in geriatric patients visiting a fall clinic and to study the characteristics of fear of falling and its consequences.Design. Retrospective study of patient's records.Method. A random sample of 100 medical records of geriatric patients of the fall clinic of the Jeroen Bosch Ziekenhuis in Den Bosch was systematical examined.Results. The mean age of the patients was 79...
August 2005: Tijdschrift Voor Gerontologie en Geriatrie
Deepan Patel, Javad Parvizi, Peter F Sharkey
Despite the overall success of total hip arthroplasty (THA), there has been an increase in the rate of revision hip surgeries performed each year in the United States. These revision surgeries result in several billion dollars in health care costs. Bearing surface wear can result in the need for revision surgery through a variety of mechanisms. Many implant failures necessitating the need for revision surgeries occur secondary to dislocations, which are often related to prothesis wear and eventual loosening of the components...
2011: Instructional Course Lectures
Daniëlle Neut, René J B Dijkstra, Jonathan I Thompson, Henny C van der Mei, Henk J Busscher
Cementless prostheses are increasingly popular but require alternative prophylactic measures than the use of antibiotic-loaded bone cements. Here, we determine the 24-h growth inhibition of gentamicin-releasing coatings from grit-blasted and porous-coated titanium alloys, and compare their antibacterial efficacies and gentamicin release-profiles to those of a commercially available gentamicin-loaded bone cement. Antibacterial efficacy increased with increasing doses of gentamicin in the coating and loading with 1...
November 2011: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
J Jerosch, C Grasselli, P C Kothny, D Litzkow, T Hennecke
AIM: The purpose of the study was to analyse different parameters before and after implantation of a modern short-stem hip design. MATERIAL AND METHODS: In this prospective radiological study 250 consecutive hips with degenerative hip osteoarthritis were included (246 patients). The patients were operated by five different surgeons at 4 different hospitals and a metadiaphysial fixed short-stem prothesis (Mini Hip, Corin) was used. Standardised X-rays were performed with the same technique pre- and postoperatively in all patients...
February 2012: Zeitschrift Für Orthopädie und Unfallchirurgie
S Martelli, F Taddei, L Cristofolini, H S Gill, M Viceconti
There has been recent renewed interest in proximal femur epiphyseal replacement as an alternative to conventional total hip replacement. In many branches of engineering, risk analysis has proved to be an efficient tool for avoiding premature failures of innovative devices. An extensive risk analysis procedure has been developed for epiphyseal hip prostheses and the predictions of this method have been compared to the known clinical outcomes of a well-established contemporary design, namely hip resurfacing devices...
February 2011: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
Lutz A Mueller, Tobias E Nowak, Lothar Haeberle, Lars P Mueller, Alexander Kress, Michael Voelk, David Pfander, Raimund Forst, Rainer Schmidt
BACKGROUND: Aseptic implant loosening and periprosthetic bone loss are major problems after total hip arthroplasty (THA). We present an in vivo method of computed tomography (CT) assisted osteodensitometry after THA that differentiates between cortical and cancellous bone density (BD) and area around the femoral component. METHOD: Cortical and cancellous periprosthetic femoral BD (mg CaHA/mL), area (mm(2)) and contact area between the prothesis and cortical bone were determined prospectively in 31 patients 10 days, 1 year, and 6 years after uncemented THA (mean age at implantation: 55 years) using CT-osteodensitometry...
April 2010: Acta Orthopaedica
Yu-Ming Sun, Dong-Ming Jiang, Guo-Qing Mao
OBJECTIVE: To study the operative procedures, indicatrions and short-term effects of the artificial femoral head replacement for the treatment of unstable intertrochanteric fracture in aged patients. METHODS: From January 2001 to October 2008, 40 patients with unstable intertrochanteric fractures were treated with artificial femoral head replacement. Among the patients, 9 patients were male and 31 patients were female, ranging in age from 75 to 95 years, averaged 81...
December 2009: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
Lifeng Yu, Hua Li, Jan Mueller, James M Kofler, Xin Liu, Andrew N Primak, Joel G Fletcher, Luis S Guimaraes, Thanila Macedo, Cynthia H McCollough
PURPOSE: Hip prosthesis is one of the most common types of metal implants and can cause significant artifacts in computed tomography (CT) examinations. The purpose of this work was to develop a projection-based method for reducing metal artifacts caused by hip prostheses in multislice helical CT. METHOD AND MATERIALS: The proposed method is based on a novel concept, reformatted projection, which is formed by combining the projection data at the same view angle over the full longitudinal scan range...
November 2009: Investigative Radiology
Feng Wang, Dong-yang Chen, Xu-sheng Qiu, Zhi-hong Xu, Zu-yu Wang, Dong-quan Shi, Qing Jiang
OBJECTIVE: The long-term biological effects of HA-coated prostheses remain uncertain. The purpose of the study is to analyze the reasons of coating shedding of uncemented hip prothesis, so as to provide evidences for the preventions and treatment. METHODS: From 2002.10 to 2009.2, 5 patients with coating shedding of uncemented hip prosthesis were treated with kip revision operation. Among the patients, 3 patients were male and 2 patients were female, ranging in age from 55 to 68 years...
June 2009: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
Xiuli Du, Lan Chen, Genlin Xu, Yiwang Bao
Total hip replacement is a very effective method to cure many kinds of hip joint illnesses. About a century ago, it was first used in clinic. Since then, total hip replacement has been well developed. Hip joints sustain the most load of body, so people pay great attention to the hip prothesis' mechanics property. Especially after the finite element analysis was widely used in biomechanics investigation, the stress distribution of different designs can be easily compared with each other, and the relatively better parameters of the design could be decided...
April 2009: Sheng Wu Yi Xue Gong Cheng Xue za Zhi, Journal of Biomedical Engineering, Shengwu Yixue Gongchengxue Zazhi
Nuray Haliloglu, Deniz Inceoglu, Gulden Sahin
INTRODUCTION: The aim of this study is to evaluate the incidence of peritrochanteric high T2 signal (peritrochanteric edema, peritendinitis) on routine MR imaging studies and to determine whether reporting peritrochanteric edema is always clinically relevant depending on the age and gender of the patients. MATERIALS AND METHODS: We evaluated 79 consecutive bilateral hip MR images performed in our department between January 2006 and December 2006 (57 female, 22 male patients, mean age 49 years)...
July 2010: European Journal of Radiology
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