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Orthopedic testing

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https://www.readbyqxmd.com/read/28227944/classification-of-squat-quality-with-inertial-measurement-units-in-the-single-leg-squat-mobility-test
#1
Rezvan Kianifar, Alex Lee, Sachin Raina, Dana Kulic, Rezvan Kianifar, Alex Lee, Sachin Raina, Dana Kulic, Alex Lee, Sachin Raina, Dana Kulic, Rezvan Kianifar
Many assessment and diagnosis protocols in rehabilitation, orthopedic surgery and sports medicine rely on mobility tests like the Single Leg Squat (SLS). In this study, a set of three Inertial Measurement Units (IMUs) were used to estimate the joint pose during SLS and to classify the SLS as poor, moderate or good. An Extended Kalman Filter pose estimation method was used to estimate kinematic joint variables, and time domain features were generated based on these variables. The most important features were then selected and used to train Support Vector Machine (SVM), Linear Multinomial Logistic Regression, and Decision Tree classifiers...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227559/design-and-pilot-evaluation-of-competitive-and-cooperative-exercise-games-for-arm-rehabilitation-at-home
#2
Maja Gorsic, Domen Novak, Maja Gorsic, Domen Novak, Domen Novak, Maja Gorsic
People with chronic arm impairment should exercise intensely at home after completing their clinical rehabilitation program, but frequently lack motivation. To address this issue, we present a home rehabilitation system that motivates patients by allowing them to perform arm exercises together with friends or relatives in competitive and cooperative games. Inertial sensors are used to track the patient's arm and control the game. The system was tested with seven adults with arm impairment as well as their friends or spouses...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226893/reducing-the-effect-of-parasitic-capacitance-on-implantable-passive-resonant-sensors
#3
John F Drazan, Omar T Abdoun, Michael T Wassick, George A Marcus, Reena Dahle, Luke A Beardslee, Nathaniel C Cady, Eric H Ledet, John F Drazan, Omar T Abdoun, Michael T Wassick, George A Marcus, Reena Dahle, Luke A Beardslee, Nathaniel C Cady, Eric H Ledet, John F Drazan, Reena Dahle, Eric H Ledet, George A Marcus, Omar T Abdoun, Luke A Beardslee, Michael T Wassick, Nathaniel C Cady
Passive, LC resonators have the potential to serve as small, robust, low cost, implantable sensors to wirelessly monitor implants following orthopedic surgery. One significant barrier to using LC sensors is the influence on the sensor's resonance of the surrounding conductive high permittivity media in vivo. The surrounding media can detune the resonant frequency of the LC sensor resulting in a bias. To mitigate the effects of the surrounding media, we added a "capping layer" to LC sensors to isolate them from the surrounding media...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28222837/use-of-the-rat-grimace-scale-to-evaluate-neuropathic-pain-in-a-model-of-cervical-radiculopathy
#4
Blythe H Philips, Christine L Weisshaar, Beth A Winkelstein
Although neck and low-back pain are common sources of neuropathic pain with high societal costs, the pathophysiology of neuropathic pain is not well-defined. Traditionally, most rodent pain studies rely on evoked reflex-based testing to measure pain. However, these testing methods do not reveal spontaneous pain, particularly early after injury. The rat grimace scale (RGS) for quantifying spontaneous pain has been validated after visceral, incisional, orthopedic, and inflammatory insults but not neuropathic pain...
February 1, 2017: Comparative Medicine
https://www.readbyqxmd.com/read/28216755/interobserver-variability-in-pirani-clubfoot-severity-scoring-system-between-the-orthopedic-surgeons
#5
Saurabh Jain, Anand Ajmera, Mahendra Solanki, Alok Verma
BACKGROUND: Congenital talipes equinovarus (clubfoot) is one of the most common congenital pediatric orthopedic foot deformity, which varies in severity and clinical course. Assessment of severity of the club foot deformity is essential to assess the initial severity of deformity, to monitor the progress of treatment, to prognosticate, and to identify early relapse. Pirani's scoring system is most acceptable and popular for club foot deformity assessment because it is simple, quick, cost effective, and easy...
January 2017: Indian Journal of Orthopaedics
https://www.readbyqxmd.com/read/28216753/anatomical-variation-of-posterior-slope-of-tibial-plateau-in-adult-eastern-indian-population
#6
Shyamalendu Medda, Rajib Kundu, Sohini Sengupta, Ananda Kisor Pal
BACKGROUND: Upper surface of the proximal tibial end, tibial plateau, has a slope directed posteroinferiorly relative to the long axis of the middle of the shaft. It has important consideration in surgeries such as knee arthroplasty, high tibial osteotomy, and medical imaging of the knee joint. The aim of the present study was to estimate the tibial plateau angle (TPA) by plain radiograph in the adult Eastern Indian population as during literature review, we were unable to find any study, except one (without specific reference axis), on this variable among the Indian population...
January 2017: Indian Journal of Orthopaedics
https://www.readbyqxmd.com/read/28203270/a-novel-computer-aided-approach-for-parametric-investigation-of-custom-design-of-fracture-fixation-plates
#7
Xiaozhong Chen, Kunjin He, Zhengming Chen
The present study proposes an integrated computer-aided approach combining femur surface modeling, fracture evidence recover plate creation, and plate modification in order to conduct a parametric investigation of the design of custom plate for a specific patient. The study allows for improving the design efficiency of specific plates on the patients' femur parameters and the fracture information. Furthermore, the present approach will lead to exploration of plate modification and optimization. The three-dimensional (3D) surface model of a detailed femur and the corresponding fixation plate were represented with high-level feature parameters, and the shape of the specific plate was recursively modified in order to obtain the optimal plate for a specific patient...
2017: Computational and Mathematical Methods in Medicine
https://www.readbyqxmd.com/read/28197822/enhanced-repair-of-segmental-bone-defects-in-rabbit-radius-by-porous-tantalum-scaffolds-modified-with-the-rgd-peptide
#8
Hui Wang, Qijia Li, Qian Wang, Hui Zhang, Wei Shi, Hongquan Gan, Huiping Song, Zhiqiang Wang
Fast and stable repair of segmental bone defects remains a challenge for clinical orthopedic surgery. In recent years, porous tantalum has been widely applied in clinical orthopedics for low modulus of elasticity, with three-dimensional microstructures similar to cancellous bone and excellent biocompatibility. To further improve bone the repairing ability of porous tantalum, the cyclo(-RGDfK-) peptide was coated on the surface of porous tantalum scaffolds. A model of 15 mm segmental defect was made at the midshaft of right radius in New Zealand White rabbits...
March 2017: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/28192506/correction-using-automated-hba1c-testing-to-detect-diabetes-mellitus-in-orthopedic-inpatients-and-its-effect-on-outcomes
#9
Elif I Ekinci, Alvin Kong, Leonid Churilov, Natalie Nanayakkara, Wei Ling Chiu, Priya Sumithran, Frida Djukiadmodjo, Erosha Premaratne, Elizabeth Owen-Jones, Graeme Keith Hart, Raymond Robbins, Andrew Hardidge, Douglas Johnson, Scott T Baker, Jeffrey D Zajac
[This corrects the article DOI: 10.1371/journal.pone.0168471.].
2017: PloS One
https://www.readbyqxmd.com/read/28185748/validity-of-ultrasound-in-diagnosis-of-tendon-injuries-in-penetrating-extremity-trauma
#10
Narges Mohammadrezaei, Javad Seyedhosseini, Elnaz Vahidi
BACKGROUND: Tendon ruptures are common musculoskeletal injuries all around the world. Correct and timely diagnosis of tendon injuries is obviously important for improving the treatment and minimizing the community costs. Ultrasound is now being considered as one of useful modalities in this area. OBJECTIVE: The preset study is going to validate the diagnostic ability of ultrasound in tendon injuries induced by penetrating extremity trauma. METHODS: In this prospective, observational study, patients with penetrating extremity trauma and suspicion of tendon injuries were enrolled in our study...
January 27, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28184356/how-trustworthy-are-clinical-examinations-and-plain-radiographs-for-diagnosis-of-scaphoid-fractures
#11
Mohammad Reza Ghane, Mohammad Saeid Rezaee-Zavareh, Mohammad Kazem Emami-Meibodi, Vahid Dehghani
BACKGROUND: Sometimes patients with a scaphoid fracture, especially in an acute phase of injury, can have normal radiographs and, therefore, initial diagnosis of the scaphoid fracture may be neglected. In this study, we determined the value in of clinical examination and a radiograph in the diagnosis of scaphoid fracture based on the results of a two-week follow-up magnetic resonance imaging (MRI). OBJECTIVES: In this study, sought to assess the value of using both a clinical examination (tenderness of scaphoid tubercle, tenderness of anatomical snuffbox, and compression test) and radiographic imaging in the diagnosis of scaphoid fractures based on the results after a two-week follow-up MRI...
November 2016: Trauma Monthly
https://www.readbyqxmd.com/read/28183676/tizrnbtamo-high-entropy-alloy-designed-for-orthopedic-implants-as-cast-microstructure-and-mechanical-properties
#12
Shao-Ping Wang, Jian Xu
Combining the high-entropy alloy (HEA) concept with property requirement for orthopedic implants, we designed a Ti20Zr20Nb20Ta20Mo20 equiatomic HEA. The arc-melted microstructures, compressive properties and potentiodynamic polarization behavior in phosphate buffer solution (PBS) were studied in detail. It was revealed that the as-cast TiZrNbTaMo HEA consisted of dual phases with bcc structure, major bcc1 and minor bcc2 phases with the lattice parameters of 0.3310nm and 0.3379nm, respectively. As confirmed by nanoindentation tests, the bcc1 phase is somewhat harder and stiffer than the bcc2 phase...
April 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28177746/preliminary-safety-analysis-of-high-intensity-interval-training-hiit-in-persons-with-chronic-stroke
#13
Daniel L Carl, Pierce Boyne, Bradley Rockwell, Myron Gerson, Jane Khoury, Brett Kissela, Kari Dunning
The purpose of this study was to assess safety via electrocardiographic (ECG), blood pressure (BP), heart rate (HR), and orthopedic responses to 3 different high-intensity interval training (HIIT) protocols in persons with stroke. Eighteen participants (10 male; 61.9 + 8.3 years of age; 5.8 + 4.2 years poststroke) completed a symptom-limited graded exercise test (GXT) with ECG monitoring to screen for eligibility and determine HR peak. The 3 HIIT protocols involved repeated 30 s bursts of treadmill walking at maximum speed alternated with rest periods of 30 s (P30), 1 min (P60), or 2 min (P120)...
November 21, 2016: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28173784/a-protocol-for-a-new-methodological-model-for-work-related-shoulder-complex-injuries-from-diagnosis-to-rehabilitation
#14
Igor Setuain, Miriam Gonzalez-Izal, Ainara Paularena, Jose Luis Luque, Lars L Andersen, Mikel Izquierdo
BACKGROUND: Work-related injuries of the shoulder complex represent a challenge for clinicians because of the large variety of clinical entities involved and the broad anatomic structures that can be affected. Furthermore, commonly performed orthopedic tests have demonstrated limited accuracy for diagnosing the injury despite considerable research efforts. The aim of this study protocol is therefore to describe a comprehensive approach integrating both a clinical- and functional status-based pathology and an adapted rehabilitation prescription...
February 7, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28167428/promising-characteristics-of-gradient-porosity-ti-6al-4v-alloy-prepared-by-slm-process
#15
Michaela Fousová, Dalibor Vojtěch, Jiří Kubásek, Eva Jablonská, Jaroslav Fojt
Porous structures, manufactured of a biocompatible metal, mimicking human bone structure are the future of orthopedic implantology. Fully porous materials, however, suffer from certain drawbacks. To overcome these, gradient in structure can be prepared. With gradient in porosity mechanical properties can be optimized to an appropriate value, implant can be attributed a similar gradient macrostructure as bone, tissue adhesion may be promoted and also various modification with organic or inorganic substances are possible...
January 31, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28166806/the-we-study-does-botulinum-toxin-a-make-walking-easier-in-children-with-cerebral-palsy-study-protocol-for-a-randomized-controlled-trial
#16
Siri Merete Brændvik, Karin Roeleveld, Guro Lillemoen Andersen, Anne Elisabeth Ross Raftemo, Kjersti Ramstad, Jasmina Majkic-Tajsic, Torarin Lamvik, Bendik Lund, Turid Follestad, Torstein Vik
BACKGROUND: Intramuscular injections of botulinum toxin A (BoNT-A) have been a cornerstone in the treatment of spasticity for the last 20 years. In Norway, the treatment is now offered to two out of three children with spastic cerebral palsy (CP). However, despite its common use, the evidence for its functional effects is limited and inconclusive. The objective of this study is to determine whether BoNT-A makes walking easier in children with CP. We hypothesize that injections with BoNT-A in the calf muscles will reduce energy cost during walking, improve walking capacity, increase habitual physical activity, reduce pain and improve self-perceived performance and satisfaction...
February 6, 2017: Trials
https://www.readbyqxmd.com/read/28166159/fdg-pet-ct-assesses-the-risk-of-femoral-pathological-fractures-in-patients-with-metastatic-breast-cancer
#17
Gary A Ulaner, Alexandra M Zindman, Junting Zheng, Tae Won B Kim, John H Healey
PURPOSE: Assessment of pathological fracture risk is critical to optimize the use of prophylactic orthopedic fixation to prevent pathological fractures. Better prediction of pathological fracture risk is needed. We evaluated if quantitative measures of FDG avidity can assess femoral pathological fracture risk in patients with metastatic breast cancer (MBC). PATIENTS AND METHODS: A Health Insurance Portability and Accountability Act-compliant retrospective case-control study was performed under institutional review board waiver...
February 3, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28165799/the-balance-between-proliferation-and-transcription-of-angiogenic-factors-of-mesenchymal-stem-cells-in-hypoxia
#18
Arina T Buizer, Sjoerd K Bulstra, Albert G Veldhuizen, Roel Kuijer
Bridging large bone defects with mesenchymal stromal cells-seeded scaffolds remains a big challenge in orthopedic surgery, due to the lack of vascularization. Within such a cell-scaffold construct cells are exposed to ischemic conditions. When human mesenchymal stem cells (hMSCs) encounter hypoxic conditions, they show higher cell proliferation than at ambient oxygen levels. However, when hMSCs are exposed to prolonged ischemia, cell proliferation ceases completely. Exposure of hMSCs to hypoxic conditions is known to result in the transcription of angiogenic factors (AGF), which can promote the development of a new blood vessels...
February 6, 2017: Connective Tissue Research
https://www.readbyqxmd.com/read/28161746/correlation-between-osteoarthritic-changes-in-the-stifle-joint-in-dogs-and-the-results-of-orthopedic-radiographic-ultrasonographic-and-arthroscopic-examinations
#19
Gabriel Ignacio Ramírez-Flores, Javier Del Angel-Caraza, Israel Alejandro Quijano-Hernández, Don A Hulse, Brian S Beale, José Mauro Victoria-Mora
Osteoarthritis (OA) is a chronic, degenerative disease affecting the articular cartilage and subchondral bone that causes pain and inhibits movement. The stifle's joint fibrous capsule contains the synovial membrane, which produces cartilage nutrients. A ruptured cranial cruciate ligament injures the joint and produces OA. Osteoarthritis diagnosis starts with clinical radiographic and ultrasonographic tests, although the latter is not used very much in dog and cat clinics for this purpose. The objective of this study was to establish the correlation among the results of orthopedic, radiographic, ultrasonographic examinations and structural anatomical changes revealed by arthroscopic evaluation to diagnose stifle joint OA and determine risk factors in the dogs affected...
February 4, 2017: Veterinary Research Communications
https://www.readbyqxmd.com/read/28157596/fabrication-and-evaluation-of-bulk-nanostructured-cobalt-intended-for-dental-and-orthopedic-implants
#20
Fuzeng Ren, Weiwei Zhu, Kangjie Chu
Bulk nanostructured cobalt (Co) was fabricated by a combination of high energy ball milling and warm pressing. The obtained cobalt has an average grain size of 35nm with measured hardness and elastic modulus of 7.32GPa and 211.4GPa, respectively. Dry sliding wear testing shows such bulk nanostructured Co has high sliding wear resistance. However, electrochemical study shows that such Co has a relatively high corrosion rate and no passive behavior in the artificial saliva solution. X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) analysis further reveal that the corrosion product is composed of insoluble cobalt (II) phosphate and cobalt hydroxide...
January 25, 2017: Journal of the Mechanical Behavior of Biomedical Materials
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