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https://read.qxmd.com/read/30871906/in-vitro-analysis-of-micronized-cartilage-stability-in-the-knee-effect-of-fibrin-level-defect-size-and-defect-location
#1
Ljiljana Bogunovic, Nathan G Wetters, Akshay Jain, Brian J Cole, Adam B Yanke
PURPOSE: The purpose of the study is to assess the stability of a dehydrated cartilage allograft combined with platelet-rich plasma sealed with fibrin glue within trochlear and medial femoral condyle (MFC) chondral defects in a cadaver knee model. METHODS: Defects were made in the trochlea (20, 25, and 30 mm) and MFC (15, 20, and 25 mm) of 6 cadaver specimens. Allograft was applied utilizing 2 different techniques: (1) proud in which the fibrin level extends beyond surrounding cartilage and (2) recessed in which the fibrin level is even with or below the surrounding cartilage...
March 11, 2019: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://read.qxmd.com/read/30809114/flgr-fixed-length-gists-representation-learning-for-rnn-hmm-hybrid-based-neuromorphic-continuous-gesture-recognition
#2
Guang Chen, Jieneng Chen, Marten Lienen, Jörg Conradt, Florian Röhrbein, Alois C Knoll
A neuromorphic vision sensors is a novel passive sensing modality and frameless sensors with several advantages over conventional cameras. Frame-based cameras have an average frame-rate of 30 fps, causing motion blur when capturing fast motion, e.g., hand gesture. Rather than wastefully sending entire images at a fixed frame rate, neuromorphic vision sensors only transmit the local pixel-level changes induced by the movement in a scene when they occur. This leads to advantageous characteristics, including low energy consumption, high dynamic range, a sparse event stream and low response latency...
2019: Frontiers in Neuroscience
https://read.qxmd.com/read/30791084/assessing-foot-loads-in-continuous-passive-motion-cpm-and-active-knee-joint-motion-devices
#3
Benedikt Stolz, Casper Grim, Christoph Lutter, Kolja Gelse, Monika Schell, Bernd Swoboda, Hans-Dieter Carl, Thilo Hotfiel
BACKGROUND:  Continuous passive motion (CPM) and active knee joint motion devices are commonly applied after various surgical procedures. Despite the growing use of active motion devices, there is a paucity of data comparing plantar loads between the different mobilization techniques. The aim of this study was to investigate foot loads during knee joint mobilization in continuous passive and active knee joint motion devices and to compare this data to the physiological load of full weight-bearing...
February 21, 2019: Sportverletzung Sportschaden: Organ der Gesellschaft Für Orthopädisch-Traumatologische Sportmedizin
https://read.qxmd.com/read/30787652/stretching-combined-with-repetitive-small-length-changes-of-the-plantar-flexors-enhances-their-passive-extensibility-while-not-compromising-strength
#4
Naoki Ikeda, Takayuki Inami, Yasuo Kawakami
Static stretching increases flexibility but can decrease muscle strength; therefore, a method that would avoid the latter has been longed for. In this study, a novel stretching modality was developed that provides repetitive small length changes to the plantar flexor muscles undergoing passive static stretching (minute oscillation stretching). We investigated the effects of minute oscillation stretching on muscle strength and flexibility and its continuance. Isometric plantar flexion strength and maximal ankle joint dorsiflexion angle (dorsiflexion range of motion) were measured in 10 healthy young men (22 ± 2 years) before (pre) and immediately after (post) 3 types of stretching: static stretching, minute oscillation stretching at 15 Hz, and no intervention (control)...
March 2019: Journal of Sports Science & Medicine
https://read.qxmd.com/read/30741873/posterior-thigh-foam-rolling-increases-knee-extension-fatigue-and-passive-shoulder-range-of-motion
#5
Estêvão R Monteiro, Pablo B Costa, Victor Gonçalves Corrêa Neto, Barbara J Hoogenboom, James Steele, Jefferson da Silva Novaes
Monteiro, ER, Costa, PB, Corrêa Neto, VG, Hoogenboom, BJ, Steele, J, and da Silva Novaes, J. Posterior thigh foam rolling increases knee extension fatigue and passive shoulder range-of-motion. J Strength Cond Res XX(X): 000-000, 2019-The purpose of this study was to analyze the acute effects of different foam rolling (FR) volumes on knee extensors fatigue and shoulder passive range-of-motion (PROM). Twelve recreationally active women were recruited for participation in 2 experiments separated by 3 weeks, and the same subjects performed all procedures in each experiment...
February 6, 2019: Journal of Strength and Conditioning Research
https://read.qxmd.com/read/30732187/surgical-treatment-of-postburn-heterotopic-ossification-around-the-elbow-three-case-reports
#6
Ji-Ying Chen, Chun-Wei Fu, Hsu-Yu Ho, Yung-Chang Lu
RATIONALE: Heterotopic ossification (HO), which is defined as the formation of new bone in tissues that do not normally ossify, is an infrequent yet debilitating complication of burns. Herein, we report three patients who suffered from elbow HO after burn injury due to a dust explosion event. This is a case report that includes the most cases involved in a single mass casualty incident in the presented literature. PATIENT CONCERNS: Case 1: A 28-year-old man presented with second-to-third degree 88% total body surface area (TBSA) burns after the explosion event...
February 2019: Medicine (Baltimore)
https://read.qxmd.com/read/30683978/-patellar-tendon-ruptures-internal-bracing-and-augmentation-technique
#7
REVIEW
V Schütte, A Schmidt-Hebbel, A B Imhoff, A Achtnich
OBJECTIVE: To report a surgical technique for the treatment of patellar tendon ruptures augmented with an internal brace suture tape. INDICATIONS: Acute patellar tendon ruptures, fractures of the distal patellar pole, chronic insufficiency of the patellar tendon or revision surgery for failed repairs. CONTRAINDICATIONS: Severe damage to the surrounding soft tissue. Local infection. Life-threatening conditions. SURGICAL TECHNIQUE: Direct longitudinal anterior approach to the patellar tendon...
January 25, 2019: Operative Orthopädie und Traumatologie
https://read.qxmd.com/read/30637308/early-regain-of-function-and-proprioceptive-improvement-following-knee-arthroplasty
#8
Wolfgang Fitz, Pinak Shukla, Ling Li, Richard D Scott
Background: Techniques that allow early muscle activation, such as closed kinetic chain (CKC) and open kinetic chain (OKC) exercises, may play a beneficial role in the early rehabilitation of the reconstructed knee. However, current rehabilitation regimens have not been shown to reverse post-operative quadriceps activation failure and weakness. To investigate whether patients who use a continuous active motion (CAM) device that follows closed kinetic chain principles have better early post-operative functional improvements than patients who use a continuous passive motion (CPM) device that follows the principles of open kinetic chain principles...
November 2018: Archives of Bone and Joint Surgery
https://read.qxmd.com/read/30634691/continuous-passive-motion-promotes-and-maintains-chondrogenesis-in-autologous-endothelial-progenitor-cell-loaded-porous-plga-scaffolds-during-osteochondral-defect-repair-in-a-rabbit-model
#9
Hsueh-Chun Wang, Tzu-Hsiang Lin, Nai-Jen Chang, Horng-Chaung Hsu, Ming-Long Yeh
Continuous passive motion (CPM) is widely used after total knee replacement. In this study, we investigated the effect of CPM combined with cell-based construct-transplantation in osteochondral tissue engineering. We created osteochondral defects (3 mm in diameter and 3 mm in depth) in the medial femoral condyle of 36 knees and randomized them into three groups: ED (empty defect), EPC/PLGA (endothelial progenitor cells (EPCs) seeded in the poly lactic-co-glycolic acid (PLGA) scaffold), or EPC/PLGA/CPM (EPC/PLGA scaffold complemented with CPM starting one day after transplantation)...
January 10, 2019: International Journal of Molecular Sciences
https://read.qxmd.com/read/30630627/stance-and-swing-phase-knee-flexion-recover-at-different-rates-following-total-knee-arthroplasty-an-inertial-measurement-unit-study
#10
Ryan M Chapman, Wayne E Moschetti, Douglas W Van Citters
Total knee arthroplasty (TKA) is the most common joint replacement in the United States. Range of motion (ROM) monitoring includes idealized clinic measures (e.g. goniometry during passive ROM) that may not accurately represent knee function. Accordingly, a novel, portable, inertial measurement unit (IMU) based ROM measurement method was developed, validated, and implemented. Knee flexion was computed via relative motion between two IMUs and validated via optical motion capture (p > 0.05). Prospective analyses of 10 healthy individuals (5M, 50 ± 19 years) and 20 patients undergoing TKA (3 lost to follow up, 10M, 65 ± 6 years) were completed...
December 31, 2018: Journal of Biomechanics
https://read.qxmd.com/read/30558928/walking-with-an-induced-unilateral-knee-extension-restriction-affects-lower-but-not-upper-body-biomechanics-in-healthy-adults
#11
Michael Sotelo, Patric Eichelberger, Martina Furrer, Heiner Baur, Stefan Schmid
BACKGROUND: Unilateral knee flexion contractures (KFC) are frequently seen in orthopedic rehabilitation and often interfere with the normal gait pattern, resulting in passive and/or active secondary deviations. In order to prevent KFC-related complications such as patellofemoral pain or the knee spine syndrome, a comprehensive understanding of such deviations is necessary. RESEARCH QUESTION: How does an artificially induced unilateral KFC affect whole body biomechanics in young healthy adults during gait? METHODS: Twenty-four healthy young adults (females/males: 13/11; mean age: 27...
September 2018: Gait & Posture
https://read.qxmd.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
#12
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://read.qxmd.com/read/30523369/preoperative-range-of-motion-and-applications-of-continuous-passive-motion-predict-outcomes-after-knee-arthroplasty-in-patients-with-arthritis
#13
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://read.qxmd.com/read/30505681/object-motion-detection-based-on-passive-uhf-rfid-tags-using-a-hidden-markov-model-based-classifier
#14
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://read.qxmd.com/read/30484849/use-of-continuous-passive-motion-reduces-rates-of-arthrofibrosis-after-anterior-cruciate-ligament-reconstruction-in-a-pediatric-population
#15
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...
January 1, 2019: Orthopedics
https://read.qxmd.com/read/30459696/virtual-integration-environment-as-an-advanced-prosthetic-limb-training-platform
#16
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://read.qxmd.com/read/30424177/energy-harvesting-combat-boot-for-satellite-positioning
#17
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://read.qxmd.com/read/30361837/current-practice-postoperative-and-return-to-play-trends-after-acl-reconstruction-by-fellowship-trained-sports-surgeons
#18
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://read.qxmd.com/read/30321902/continuous-passive-motion-does-improve-range-of-motion-pain-and-swelling-after-acl-reconstruction-a-systematic-review-and-meta-analysis
#19
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://read.qxmd.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
#20
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
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