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https://www.readbyqxmd.com/read/29667844/lower-extremity-biomechanics-during-a-drop-vertical-jump-in-participants-with-or-without-chronic-ankle-instability
#1
C Collin Herb, Kaitlyn Grossman, Mark A Feger, Luke Donovan, Jay Hertel
CONTEXT:   Chronic ankle instability (CAI) is a condition characterized by range-of-motion, neuromuscular, and postural-control deficits and subjective disability, reinjury, and posttraumatic osteoarthritis. Differences have been reported in kinematics, kinetics, surface electromyography (EMG), and ground reaction forces during functional tasks performed by those with CAI. These measures are often collected independently, and the research on collecting measures simultaneously during a movement task is limited...
April 18, 2018: Journal of Athletic Training
https://www.readbyqxmd.com/read/29660953/whole-body-vibration-improves-ankle-spasticity-balance-and-walking-ability-in-individuals-with-incomplete-cervical-spinal-cord-injury
#2
Taesung In, Kyoungsim Jung, Mingoo Lee, Hwi-Young Cho
OBJECTIVES: This study aimed to investigate the effects of whole-body vibration (WBV) training on ankle spasticity, balance, and walking ability in patients with incomplete spinal cord injury (iSCI) at cervical level. METHODS: Twenty-eight patients with cervical iSCI were randomly assigned to WBV (n = 14) or control group (n = 14). WBV group received WBV training, while control group was treated with placebo-treatment. All interventions were given for 20-min, twice a day, 5-days a week for 8-weeks...
April 7, 2018: NeuroRehabilitation
https://www.readbyqxmd.com/read/29655650/surgical-treatment-of-lisfranc-injury-with-plantar-plate-approach
#3
Deepal Dalal, Christian Curry, Ryan Carter, Colin Zdenek, Nicholas W Todd, Shannon M Rush, Richard Jensen
Midfoot injuries are the second most common athletic foot injury documented in the published data. High-energy Lisfranc dislocations are commonly seen secondary to traumatic etiologies and disrupt the strong midfoot ligaments supporting the arch. These injuries require immediate surgical intervention to prevent serious complications such as compartment syndrome and amputation. The present case series reports a new Lapidus plate system used in 3 patients who underwent arthrodesis procedures for Lisfranc joint dislocation...
April 11, 2018: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29596981/the-vestibulomyogenic-balance-response-is-elevated-following-high-intensity-lengthening-contractions-of-the-lower-limb
#4
Emily I McIntosh, Geoffrey A Power, Brian H Dalton
The purpose was to investigate whether induced muscle weakness of the plantar and dorsiflexors through high-intensity lengthening contractions increases the vestibulomyogenic balance response. Nine males (∼25 years) participated in three experimental testing days to evaluate the vestibular control of standing balance and neuromuscular function of the plantar and dorsiflexors pre- and post (30 min, and 1 and 7 days) high-intensity lengthening plantar and dorsiflexions. To evaluate the vestibular-evoked balance response, participants stood quietly on a force plate while exposed to continuous, random electrical vestibular stimulation (EVS) for two 90-s trials...
March 26, 2018: Neuroscience Letters
https://www.readbyqxmd.com/read/29595648/clinical-application-of-the-sinus-tarsi-approach-in-the-treatment-of-intra-articular-calcaneal-fracture
#5
Qingting Meng, Qingxian Wang, Xirui Wu, Aqin Peng, Jincheng Yan
To observe the clinical outcome of the sinus tarsi approach in the operative treatment of intra-articular calcaneal fractures.Forty-nine intra-articular calcaneal fractures in 45 patients were managed surgically with sinus tarsi approach. The anatomical plate and compression bolts were applied in 14 feet. The anatomical plate and screws were applied in 35 feet. Maryland foot score system was used to evaluate the function of the hindfoot at the followup.The reduction of the posterior facet was graded as nearly anatomical (less than 2 mm articular displacement) in 46 feet (93...
March 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29511649/association-of-sericin-and-swimming-on-the-phenotype-motor-plate-and-functionality-of-the-denervated-plantar-muscle-of-wistar-rats
#6
André Santana, Jean Carlos Debastiani, Regina Inês Kunz, Pamela Buratti, Rose Meire Costa Brancalhão, Lucinéia de Fátima Chasko Ribeiro, Márcia Miranda Torrejais, Gladson Ricardo Flor Bertolini
Physical exercise may help maintain muscle properties and functional improvement after peripheral nerve lesion, which may be enhanced by using biocompatible substances, such as sericin. The aim of this study was analyse the effect of sericin associated with swimming exercise on the phenotype, innervation, and functionality of the plantar muscle of Wistar rats. Forty randomly divided adult rats were used in five groups of eight animals: control, injury, sericin, exercise, exercise and sericin. The application of sericin was done on the spot, 100 μL, shortly after nerve compression...
February 2018: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/29510787/kinematic-and-kinetic-analysis-of-repeated-and-static-elev%C3%A3-in-adolescent-female-dance-students
#7
Amit Abraham, Ayelet Dunsky, Madeleine E Hackney, Ruth Dickstein
Elevé is a fundamental dance movement practiced routinely by dance students and serving as an integral component of screening in dance. It consists of ankle plantar flexion (PF) movement and is considered to be a frequent cause of foot and ankle injuries among dancers, with adolescent female dance students being at greatest risk for such injuries. Therefore, gaining additional knowledge regarding elevé functional range of motion (ROM) and inter-leg weightbearing distribution (WBD) properties among adolescent dance students is warranted for pedagogic, screening, injury prevention, and rehabilitation purposes...
March 15, 2018: Journal of Dance Medicine & Science
https://www.readbyqxmd.com/read/29472168/stability-of-locking-plate-and-compression-screws-for-lapidus-arthrodesis-a-biomechanical-comparison-of-plate-position
#8
David Drummond, Travis Motley, Victor Kosmopoulos, Jordan Ernst
Lapidus (first tarsometatarsal joint) arthrodesis is an established and widely used procedure for the management of moderate to severe hallux valgus, especially in cases involving hypermobility of the first tarsometatarsal joint. Multiple fixation methods are available, and several previous investigations have studied the relative strengths of these methods, including dorsomedial and plantar plating comparisons. However, these studies compared plates of varying designs and mechanical properties and used varying modes of compression and interfragmentary screw techniques...
February 19, 2018: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29466679/a-biomechanical-comparison-of-fifth-metatarsal-jones-fracture-fixation-methods
#9
Neil L Duplantier, Ronald J Mitchell, Steve Zambrano, Aaron C Stone, Domenica A Delgado, Bradley S Lambert, Michael R Moreno, Joshua D Harris, Patrick C McCulloch, David M Lintner, Kevin E Varner
BACKGROUND: Fifth metatarsal base fractures of the metaphyseal-diaphyseal watershed junction (Jones fracture) are commonly treated with surgical fixation in athletes. Intramedullary screw fixation remains the most utilized construct, although plantar-lateral plating is an alternative. Purpose/Hypothesis: The purpose was to compare the mechanical strength of fracture fixation between an intramedullary screw and plantar-lateral plating. The hypothesis was that plantar-lateral plate fixation would allow for more cycles and higher peak loads before failure, as well as less fracture gapping, than would an intramedullary screw in cadaveric foot specimens with simulated Jones fractures exposed to cantilever bending...
February 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29460645/biomechanical-evaluation-of-suture-configurations-in-lesser-toe-plantar-plate-repairs
#10
Fred T Finney, Simon Lee, Jaron Scott, Todd A Irwin, James R Holmes, Paul G Talusan
BACKGROUND: Lesser toe metatarsal-phalangeal (MTP) joint instability can be a major source of pain and dysfunction. Instability occurs when there is incompetence of the plantar plate and/or collateral ligaments. Newer operative treatments focus on performing anatomic repairs of the plantar plate. The goal of this study was to compare the biomechanical properties of 3 suture configurations that may be used for plantar plate repairs. METHODS: Biomechanical analysis of 27 lesser toe plantar plates from fresh frozen human cadavers was completed...
February 1, 2018: Foot & Ankle International
https://www.readbyqxmd.com/read/29409274/proximal-oblique-metatarsal-osteotomy-for-hallux-valgus-using-a-plantar-locking-plate
#11
Seiya Ohzawa, Makoto Kubota
BACKGROUND: The purpose of this retrospective study was to evaluate the clinical and radiological results of hallux valgus surgery using a plantar locking plate. METHODS: Proximal oblique metatarsal osteotomy combined with distal soft tissue treatment was performed in 59 adult patients (68 feet) with hallux valgus, using an anatomically pre-contoured plantar locking plate for fixation of the osteotomy. The median age was 64.0 years and the median follow-up period was 16...
June 17, 2017: Foot and Ankle Surgery: Official Journal of the European Society of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29409209/preliminary-results-of-a-plantar-plate-for-lapidus-arthrodesis
#12
N Gutteck, P Savov, M Panian, D Wohlrab, A Zeh, K S Delank
The TMT I arthrodesis is an established procedure for the correction of hallux valgus deformity associated with the instability of the TMT-I joint. A risk of transfer metatarsalgia is reported in the literature associated with persistant elevation of MT-I. Detailed information for ideal positioning of the arthrodesis is missing so far. Clinical, radiological and padobarografical results and their correlations were analyzed with special consideration of the elevation position of the MT-I in a TMT-I arthrodesis using the plantar plate osteosynthesis...
April 25, 2017: Foot and Ankle Surgery: Official Journal of the European Society of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29397998/comparison-of-lower-limb-kinetics-kinematics-and-muscle-activation-during-drop-jumping-under-shod-and-barefoot-conditions
#13
Keiji Koyama, Junichiro Yamauchi
This study was to investigate the acute effects of wearing shoes on lower limb kinetics, kinematics and muscle activation during a drop jump. Eighteen healthy men performed a drop jump under barefoot and shod conditions. Vertical ground reaction force (GRF) was measured on a force plate during the contact phase of a drop jump, and GRF valuables were calculated for each condition. The angles of the knee and ankle joints, and the foot strike angle (the angle between the plantar surface of the foot and the ground during ground contact) as well as the electromyography of 7 muscles were measured...
January 12, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/29396468/alterations-of-pregnant-gait-during-pregnancy-and-post-partum
#14
Qichang Mei, Yaodong Gu, Justin Fernandez
Physique changes during pregnancy lead to gait characteristic variations. This study aimed to analyse gait of pregnant individuals throughout pregnancy and post-partum. Sixteen healthy pregnant women volunteered as participants and had their lower limb kinematics analysed through a VICON three-dimensional motion system and plantar pressure measured with a Novel EMED force plate. Significant changes were observed in pelvic anterior motion, hip and ankle joint kinematics. Mean pressure distribution and COP trajectory deviation altered accordingly with increased pregnancy time, compared with post-partum...
February 2, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29389857/estimation-of-foot-plantar-center-of-pressure-trajectories-with-low-cost-instrumented-insoles-using-an-individual-specific-nonlinear-model
#15
Xinyao Hu, Jun Zhao, Dongsheng Peng, Zhenglong Sun, Xingda Qu
Postural control is a complex skill based on the interaction of dynamic sensorimotor processes, and can be challenging for people with deficits in sensory functions. The foot plantar center of pressure (COP) has often been used for quantitative assessment of postural control. Previously, the foot plantar COP was mainly measured by force plates or complicated and expensive insole-based measurement systems. Although some low-cost instrumented insoles have been developed, their ability to accurately estimate the foot plantar COP trajectory was not robust...
February 1, 2018: Sensors
https://www.readbyqxmd.com/read/29374967/association-between-second-metatarsal-length-and-forefoot-loading-under-the-second-metatarsophalangeal-joint
#16
Adam E Fleischer, Shenche Hshieh, Ryan T Crews, Brett J Waverly, Jacob M Jones, Erin E Klein, Lowell Weil, Lowell Scott Weil
BACKGROUND: Metatarsal length is believed to play a role in plantar plate dysfunction, although the mechanism through which progressive injury occurs is still uncertain. We aimed to clarify whether length of the second metatarsal was associated with increased plantar pressure measurements in the forefoot while walking. METHODS: Weightbearing radiographs and corresponding pedobarographic data from 100 patients in our practice walking without a limp were retrospectively reviewed...
January 1, 2018: Foot & Ankle International
https://www.readbyqxmd.com/read/29362028/lesser-metatarsophalangeal-joint-instability-advancements-in-plantar-plate-reconstruction
#17
REVIEW
Raymond Y Hsu, Alexej Barg, Florian Nickisch
The plantar plate and associated collateral ligaments are the main stabilizers of each of the lesser metatarsophalangeal joints. Although clinical examination and plain radiographs are usually sufficient to establish the diagnosis of a plantar plate tear, MRI or fluoroscopic arthrograms may help in specific cases. Recent results with a dorsal approach to plantar plate repair are promising with respect to pain relief and patient satisfaction.
March 2018: Foot and Ankle Clinics
https://www.readbyqxmd.com/read/29362026/anatomy-and-physiology-of-the-lesser-metatarsophalangeal-joints
#18
REVIEW
Fred T Finney, Ezequiel Cata, James R Holmes, Paul G Talusan
Knowledge and command of anatomy is paramount to effectively treating disorders of the lesser metatarsophalangeal (MTP) joints. The osseous structures consist of the proximal phalanx of the toe and the metatarsal head. The soft tissues on the dorsum of the MTP joint include the joint capsule and the tendons of extensor digitorum longus and extensor digitorum brevis. The proper and accessory collateral ligaments form the medial and lateral walls and contribute to stability in the coronal and sagittal planes...
March 2018: Foot and Ankle Clinics
https://www.readbyqxmd.com/read/29281812/dynamic-joint-stiffness-of-the-ankle-in-healthy-and-rheumatoid-arthritis-post-menopausal-women
#19
Pedro Aleixo, José Vaz-Patto, Helena Moreira, João Abrantes
The purpose of this study was to compare rheumatoid arthritis post-menopausal women (RAPW) with pathological involvement of the lower limb joints and age-matched healthy post-menopausal women (AHPW) in regard to the dynamic joint stiffness of the ankle (DJSankle ) during the stance phase of gait. Data were collected from 18 RAPW and 18 AHPW. Gait was assessed by a three-dimensional motion analysis system synchronised with a force plate. Subjects walked barefoot at natural and self-selected speed, performing 14 valid trials (comprising 7 left and 7 right foot-steps on a force plate)...
February 2018: Gait & Posture
https://www.readbyqxmd.com/read/29274925/role-of-complement-anaphylatoxin-receptors-in-a-mouse-model-of-acute-burn-induced-pain
#20
Michael Morgan, Jennifer R Deuis, Trent M Woodruff, Richard J Lewis, Irina Vetter
The complement system is an essential component of the innate immune response. The anaphylatoxins C3a and C5a are key drivers of the complement system, acting through the receptors C3aR, C5aR1 and C5aR2 to regulate inflammation. While a role for C5a activation of C5aR1 in inflammatory and neuropathic pain has been established, the role of the complement system in burn-induced pain has not been investigated. To address this gap, we assessed the role of complement receptors C3aR, C5aR1 and C5aR2 in a mouse model of acute burn-induced pain...
February 2018: Molecular Immunology
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