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https://www.readbyqxmd.com/read/30525066/a-large-knee-osteochondral-lesion-treated-using-a-combination-of-osteochondral-autograft-transfer-and-second-generation-autologous-chondrocyte-implantation-a-case-report
#1
Yuki Kato, Joverienne Chavez, Shin Yamada, Soichi Hattori, Shuzo Takazawa, Hiroshi Ohuchi
Background: Full-thickness knee cartilage defects greater than 4 cm2 are best treated with autologous chondrocyte implantation (ACI). Since the articular cartilage surrounding the site of implantation does not always have the normal thickness desirable for successful engraftment, there may be benefit in combining ACI with osteochondral autograft transfer, which provides immediate restoration of condylar contour and mechanical function. Case presentation: A 19 year-old male who sustained a traumatic anterolateral femoral condyle osteochondral fracture underwent arthroscopic knee surgery three months after injury to harvest healthy cartilage to be sent to the Japan Tissue Engineering Co...
June 2019: Regenerative Therapy
https://www.readbyqxmd.com/read/30523369/preoperative-range-of-motion-and-applications-of-continuous-passive-motion-predict-outcomes-after-knee-arthroplasty-in-patients-with-arthritis
#2
Chun-De Liao, Jau-Yih Tsauo, Shih-Wei Huang, Hung-Chou Chen, Yen-Shuo Chiu, Tsan-Hon Liou
PURPOSE: This study evaluated the clinical efficacy of continuous passive motion (CPM) following knee arthroplasty and determined the predictors of effect sizes of range of motion (ROM) and functional outcomes in patients with knee arthritis. METHODS: A comprehensive electronic database search was performed for randomized controlled trials (RCTs), without publication year or language restrictions. The included RCTs were analyzed through meta-analysis and risk of bias assessment...
December 7, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/30505681/object-motion-detection-based-on-passive-uhf-rfid-tags-using-a-hidden-markov-model-based-classifier
#3
Young Ho Lee, Ivan Marsic
We present an object motion detection system using backscattered signal strength of passive UHF RFID tags as a sensor for providing information on the movement and identity of work objects-important cues for activity recognition. For using the signal strength for accurate detection of object movement we propose a novel Markov model with continuous observations, RSSI preprocessor, frame-based data segmentation, and motion-transition finder. We use the change of backscattered signal strength caused by tag's relocation to reliably detect movement of tagged objects...
November 2018: Sensing and Bio-Sensing Research
https://www.readbyqxmd.com/read/30484849/use-of-continuous-passive-motion-reduces-rates-of-arthrofibrosis-after-anterior-cruciate-ligament-reconstruction-in-a-pediatric-population
#4
Joshua T Bram, Andrew J Gambone, Christopher J DeFrancesco, Brendan M Striano, Theodore J Ganley
Joint immobilization after anterior cruciate ligament (ACL) reconstruction may lead to intra-articular adhesions and range of motion deficits. Some practitioners thus advocate for the use of postoperative continuous passive motion (CPM) machine protocols. However, previous studies have failed to show CPM to be effective in increasing postoperative range of motion. Continuous passive motion has, however, been shown to reduce rates of arthrofibrosis requiring manipulation under anesthesia (MUA) in adult populations...
November 26, 2018: Orthopedics
https://www.readbyqxmd.com/read/30459696/virtual-integration-environment-as-an-advanced-prosthetic-limb-training-platform
#5
Briana N Perry, Robert S Armiger, Kristin E Yu, Ali A Alattar, Courtney W Moran, Mikias Wolde, Kayla McFarland, Paul F Pasquina, Jack W Tsao
Background: Despite advances in prosthetic development and neurorehabilitation, individuals with upper extremity (UE) loss continue to face functional and psychosocial challenges following amputation. Recent advanced myoelectric prostheses offer intuitive control over multiple, simultaneous degrees of motion and promise sensory feedback integration, but require complex training to effectively manipulate. We explored whether a virtual reality simulator could be used to teach dexterous prosthetic control paradigms to individuals with UE loss...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/30424177/energy-harvesting-combat-boot-for-satellite-positioning
#6
Haluk Akay, Ruize Xu, Dexter Chew Xuan Han, T Hui Teo, Sang-Gook Kim
Most portable electronic devices are power-limited by battery capacity, and recharging these batteries often interrupts the user's experience with the device. The product presented in this paper provides an alternative to powering portables by converting regular human walking motion to electricity. The device harvests electric power using air bulbs, distributed in the sole of a shoe to drive a series of micro-turbines connected to small DC motors. The number and position of air bulbs is optimized to harvest the maximum airflow from each foot-strike...
May 17, 2018: Micromachines
https://www.readbyqxmd.com/read/30361837/current-practice-postoperative-and-return-to-play-trends-after-acl-reconstruction-by-fellowship-trained-sports-surgeons
#7
N E Marshall, R A Keller, J Dines, C Bush-Joseph, O Limpisvasti
PURPOSE: Advances in anterior cruciate ligament (ACL) reconstruction have allowed for many progressions in postoperative management. However, there is no standardized protocol for immediate postoperative management or return to play. Our objective was to evaluate current trends in immediate postoperative and return to sport practices after ACL reconstruction. LEVEL OF EVIDENCE: Cross sectional study, Level IV. METHODS: Surveys were obtained from four large sports fellowship alumni networks...
October 25, 2018: Musculoskeletal Surgery
https://www.readbyqxmd.com/read/30321902/continuous-passive-motion-does-improve-range-of-motion-pain-and-swelling-after-acl-reconstruction-a-systematic-review-and-meta-analysis
#8
Theo Jaspers, Jan Taeymans, Anja Hirschmüller, Heiner Baur, Roger Hilfiker, Slavko Rogan
BACKGROUND: This systematic review and meta-analysis evaluates the results of empirical studies on the effects of CPM on rehabilitation after ACL reconstruction. The research question was: what are the effects of CPM on ROM, swelling and pain after ACL reconstruction? PATIENTS/MATERIAL AND METHODS: We searched in MEDLINE, Embase, CINAHL, Cochrane and PEDro up to January 2018. Standardized mean differences (SMD) were expressed as Hedges' g, in order to correct for overestimation of the true effect in small study samples...
October 15, 2018: Zeitschrift Für Orthopädie und Unfallchirurgie
https://www.readbyqxmd.com/read/30276023/a-novel-approach-to-treatment-utilizing-breathing-and-a-total-motion-release%C3%A2-exercise-program-in-a-high-school-cheerleader-with-a-diagnosis-of-frozen-shoulder-a-case-report
#9
Krystal A Tyree, James May
Background and Purpose: Frozen shoulder (FS) is a condition of the shoulder that is characterized by gradual loss of passive and active range of motion of the glenohumeral joint. Current treatment recommendations remain unclear due to the elusive etiology of FS and absence of nomenclature in the literature. The purpose of this case report is to describe the effects of treatment guided by the assessment and treatment of a breathing pattern disorder (BPD) coupled with Total Motion Release® on a 17-year high school cheerleader with a diagnosis of frozen shoulder...
August 2018: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/30257925/all-common-bipedal-gaits-emerge-from-a-single-passive-model
#10
Zhenyu Gan, Yevgeniy Yesilevskiy, Petr Zaytsev, C David Remy
In this paper, we systematically investigate passive gaits that emerge from the natural mechanical dynamics of a bipedal system. We use an energetically conservative model of a simple spring-leg biped that exhibits well-defined swing leg dynamics. Through a targeted continuation of periodic motions of this model, we systematically identify different gaits that emerge from simple bouncing in place. We show that these gaits arise along one-dimensional manifolds that bifurcate into different branches with distinctly different motions...
September 26, 2018: Journal of the Royal Society, Interface
https://www.readbyqxmd.com/read/30253633/resting-and-traveling-localized-states-in-an-active-phase-field-crystal-model
#11
Lukas Ophaus, Svetlana V Gurevich, Uwe Thiele
The conserved Swift-Hohenberg equation (or phase-field-crystal [PFC] model) provides a simple microscopic description of the thermodynamic transition between fluid and crystalline states. Combining it with elements of the Toner-Tu theory for self-propelled particles, Menzel and Löwen [Phys. Rev. Lett. 110, 055702 (2013)PRLTAO0031-900710.1103/PhysRevLett.110.055702] obtained a model for crystallization (swarm formation) in active systems. Here, we study the occurrence of resting and traveling localized states, i...
August 2018: Physical Review. E
https://www.readbyqxmd.com/read/30251962/multimodal-atomic-force-microscopy-with-optimized-higher-eigenmode-sensitivity-using-on-chip-piezoelectric-actuation-and-sensing
#12
Michael G Ruppert, Steven I Moore, Michal Zawierta, Andrew Fleming, Gino Putrino, Yuen Kuan Yong
Atomic force microscope (AFM) cantilevers with integrated actuation and sensing provide several distinct advantages over conventional cantilever instrumentation. These include clean frequency responses, the possibility of down-scaling and parallelization to cantilever arrays as well as the absence of optical interference. While cantilever microfabrication technology has continuously advanced over the years, the overall design has remained largely unchanged; a passive rectangular shaped cantilever design has been adopted as the industry wide standard...
September 25, 2018: Nanotechnology
https://www.readbyqxmd.com/read/30233968/interlocking-nail-fixation-for-the-treatment-of-displaced-intra-articular-calcaneal-fractures
#13
Michael Amlang, Hans Zwipp, Martin Pompach, Stefan Rammelt
Introduction: Less invasive restoration of joint congruity and calcaneal shape in displaced intra-articular calcaneal fractures via a sinus tarsi approach followed by percutaneous internal fixation with an interlocking nail results in a low rate of soft-tissue complications and good short-term outcomes1 (Video 1). Indications & Contraindications: <AbstractText Label="Step 1 Patient Placement" NlmCategory="UNASSIGNED">Place the patient in the lateral decubitus position, supporting the involved extremity with a soft radiolucent pillow, flex the contralateral knee, check with fluoroscopy before draping, and obtain lateral radiographs...
December 28, 2017: JBJS Essential Surgical Techniques
https://www.readbyqxmd.com/read/30195220/gait-analysis-of-patients-with-continuous-proximal-sciatic-nerve-blockade-in-flexion-contractures-after-primary-total-knee-arthroplasty
#14
Meng Zhou, Shuai An, Mingli Feng, Zheng Li, Huiliang Shen, Kuan Zhang, Jun Sun, Guanglei Cao
BACKGROUND: The main objective of total knee arthroplasty is to relieve pain, restore normal knee function, and improve gait stability. Significant flexion contractures can severely impair function after surgery. The purpose of this study is to evaluate the efficacy of implementing a continuous proximal sciatic nerve block in conjunction with aggressive physical therapy to treat patients with persistent flexion contractures that were recalcitrant to rehabilitation efforts following primary total knee arthroplasty (TKA)...
October 2018: Gait & Posture
https://www.readbyqxmd.com/read/30180691/doppler-passive-fathometry
#15
Chris H Harrison
Passive fathometry is a technique whereby broadband ambient ocean noise received on an array of hydrophones is averaged and cross-correlated to produce a sub-bottom profile [Siderius, Harrison, and Porter (2006). J. Acoust. Soc. Am. 120 , 1315-1323]. Here this technique is extended to determine the vertical velocity of the array, and compensate for it, without any prior knowledge, i.e., Doppler Passive Fathometry. For Fourier transform lengths beyond a certain limit, the differing Doppler between the direct and bottom reflected paths spoils the correlation match, however it is shown by using some experimental data, where the array was known to suffer from arbitrary but near periodic motion, that compensation is possible, enabling continuing time integration...
August 2018: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/30167425/arthroscopic-superior-capsule-reconstruction-for-irreparable-rotator-cuff-tear-and-axillary-nerve-palsy-associated-with-anterior-dislocation-of-the-shoulder
#16
Furuya Kanji, Nishinaka Naoya, Uehara Taishi, Tsutsui Hiroaki
Introduction: This report describes a case of irreparable massive rotator cuff tear and axillary nerve palsy associated with shoulder dislocation successfully treated by arthroscopic superior capsule reconstruction (ASCR), with a favorable post-operative outcome. Case Report: A 76-year-old man, injured from a fall while walking, presented to another hospital with right shoulder pain and a limited range of motion (ROM) 3 days after the injury. Given a diagnosis of right shoulder dislocation, he received manual reduction followed by immobilization with a sling...
March 2018: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/30046784/unichip-enables-long-term-recirculating-unidirectional-perfusion-with-gravity-driven-flow-for-microphysiological-systems
#17
Ying I Wang, Michael L Shuler
Microphysiological systems, also known as body-on-a-chips, are promising "human surrogates" that may be used to evaluate potential human response to drugs in preclinical drug development. Various microfluidics-based platforms have been proposed to interconnect different organ models and provide perfusion in mimicking the blood circulation. We have previously developed a pumpless platform that combines gravity-driven fluid flow and a rocking motion to create reciprocating flow between reservoirs for recirculation...
August 21, 2018: Lab on a Chip
https://www.readbyqxmd.com/read/30039295/repair-with-bicortical-suspension-device-restores-proximal-tibiofibular-joint-motion
#18
Pedro Pessoa, Teresa Alves-da-Silva, Francisco Guerra-Pinto
PURPOSE: Dislocation of the proximal tibiofibular joint is a complex injury that is often overlooked or misdiagnosed. Surgical treatment is recommended for severe acute or for chronic symptomatic instability but there is still no evidence on the optimal reconstruction technique. The purpose of this study is to analyze the motion of the proximal tibiofibular joint after repair with a bicortical suspension device as compared to its normal kinematics. METHODS: Kinematic analysis of the proximal tibiofibular joint was performed during continuous passive motion of the knee and ankle in 7 whole body cadavers in a controlled laboratory study...
July 23, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/30023367/short-term-outcomes-for-total-knee-arthroplasty-patients-with-active-extension-lag
#19
Tanner L McGinn, Jennifer I Etcheson, Chukwuweike U Gwam, Nicole E George, Nequesha S Mohamed, Jaydev B Mistry, Ugochi Ananaba, Anil Bhave
Background: Despite the success of total knee arthroplasty (TKA), quadriceps strength can fail to recover. Active extension lag [quadriceps lag (Q-lag)] is a function of quadriceps weakness. Q-lag presents itself in patients who maintain a full passive range of motion (ROM), but are limited in active extension ROM. Few studies have evaluated the outcomes of post-TKA patients in the presence of post-operative Q-lag. Thus, this study aims to compare: (I) pain scores; and (II) rates of readmission to physical therapy (PT) in TKA patients with Q-lag of ≥15 degrees to patients without Q-lag...
June 2018: Annals of Translational Medicine
https://www.readbyqxmd.com/read/29960775/short-communication-chronology-of-different-sexual-behaviors-and-motion-activity-during-estrus-in-dairy-cows
#20
H Dobson, J Williams, J E Routly, D N Jones, J Cameron, A Holman-Coates, R F Smith
In studying the efficiency of a variety of methods for estrus detection in a large dairy herd, we suspected a definite sequence of estrus signs. Consequently, we observed a subset of animals continuously between 0400 and 2400 h, making a note of the precise timing and frequency of each sexual behavior. Sixteen Holstein-Friesian cows, >20 d postpartum, were equipped with motion activity-sensing neck collars and had milk progesterone profiles monitored simultaneously. The duration between the first and last observed estrus behavior was (mean ± SE) 14...
September 2018: Journal of Dairy Science
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