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Posterior tibialis

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https://www.readbyqxmd.com/read/28050918/unstable-footwear-affects-magnitude-and-structure-of-variability-in-postural-control
#1
Michael Buchecker, Stefan Wegenkittl, Thomas Stöggl, Erich Müller
This study evaluated the amount, and particularly the structure of variability in postural control accompanying an unstable shoe (US) application. Medio-lateral and anterior-posterior center of pressure (COP) signals, plus electromyographic (EMG) profiles of the tibialis anterior and gastrocnemius medialis were recorded in 29 asymptomatic men while wearing both US and flat shoes (FS). Statistical analysis included common measures of dispersion, as well as sample entropy (SEn) and largest Lyapunov exponent (LyE) estimates...
January 4, 2017: Motor Control
https://www.readbyqxmd.com/read/28033058/partial-rupture-of-the-tibialis-posterior-tendon-associated-with-a-closed-medial-malleolar-fracturea-case-report
#2
Jin Park
Rupture of the tibialis posterior tendon associated with ankle fracture is rare and difficult to diagnose. This rupture can be easily overlooked because the clinical examination is limited owing to acute pain related to a closed ankle fracture. Complete rupture of the tibialis posterior tendon can be identified by a loss of tension during ankle fracture fixation, but partial rupture is more difficult to detect because the tibialis posterior tendon can maintain its tension. A few cases of complete rupture of the tibialis posterior tendon combined with ankle fracture have been reported...
November 2016: Journal of the American Podiatric Medical Association
https://www.readbyqxmd.com/read/28002322/the-effect-of-polydeoxyribonucleotide-prolotherapy-on-posterior-tibial-tendon-dysfunction-after-ankle-syndesmotic-surgery-a-case-report
#3
Tae-Ha Lim, Hyung Rae Cho, Keum Nae Kang, Chang Joon Rhyu, Sung Won Chon, Young Su Lim, Jee In Yoo, Jung-Won Kim, Young Uk Kim
RATIONALE: Ankle syndesmotic injuries occasionally require long-term therapy for recovery and can result in tendon injury. Posterior tibial tendon dysfunction (PTTD) is an acquired deformity that can cause flatfoot deformity. The current nonoperative management of PTTD includes nonsteroidal antiinflammatory drugs (NSAIDs), orthopedic devices. Although various treatment options have been attempted, optimal treatments for each stage of the condition are debated. Polydeoxyribonucleotide (PDRN) is effective in healing of chronic wounds associated with tissue damage by attracting tissue growth factors...
December 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27998042/ultrasound-features-of-the-posterior-tibialis-tendon-and-peroneus-brevis-tendon-entheses-a-comparison-study-between-healthy-adults-and-inflammatory-arthritis
#4
Ian M Ward, Eugene Kissin, Gurjit Kaeley, Joshua N Scott, Michelle Newkirk, Bernard A Hildebrand, Josh Lospinoso, Minna J Kohler, Jay B Higgs
OBJECTIVES: Limited literature exists on the sonographic appearance of the posterior tibialis (PTT) and the peroneus brevis (PBT) tendon entheses. We determined the anatomic features and best imaging techniques of normal PTT and PBT using musculoskeletal ultrasound and compared these findings to subjects with inflammatory arthritis. METHODS: Adult subjects were enrolled as: healthy controls (HC), rheumatoid arthritis (RA), and spondyloarthropathy (SpA). Bilateral PTT and PBT entheses were imaged longitudinally, comparing two angles of insonation: perpendicular to the skin surface and 45˚ cephalad...
December 20, 2016: Arthritis Care & Research
https://www.readbyqxmd.com/read/27987606/surveillance-anticoagulation-or-filter-in-calf-vein-thrombosis
#5
Dustin Y Yoon, Ahsun Riaz, Katherine Teter, Ashley K Vavra, Melina R Kibbe, William H Pearce, Mark K Eskandari, Robert Lewandowski, Heron E Rodriguez
OBJECTIVE: This study compared the efficacy and complication rates of inferior vena cava (IVC) filters for calf vein thrombosis (CVT) vs conservative treatment with or without anticoagulation. METHODS: Vascular laboratory studies of patients who had an isolated CVT (anterior and posterior tibialis, peroneal, soleal, and gastrocnemius veins) from April 2009 to January 2014 were retrospectively analyzed from a single institution. Of 647 patients with isolated CVT, 285 (44%) received an IVC filter, and 362 (56%) received medical treatment alone (38...
January 2017: Journal of Vascular Surgery. Venous and Lymphatic Disorders
https://www.readbyqxmd.com/read/27869621/ponseti-treatment-of-rigid-residual-deformity-in-congenital-clubfoot-after-walking-age
#6
Massimiliano Dragoni, Pasquale Farsetti, Giuseppe Vena, Diego Bellini, Pierluigi Maglione, Ernesto Ippolito
BACKGROUND: There is no established treatment for rigid residual deformity of congenital clubfoot (CCF) after walking age. Soft-tissue procedures, osseous procedures, and external fixation have been performed with unpredictable results. We applied the Ponseti method to patients with this condition in order to improve the outcomes of treatment. METHODS: We retrospectively reviewed the cases of 44 patients (68 feet) with congenital clubfoot whose mean age (and standard deviation) at treatment was 4...
October 19, 2016: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/27852376/-rheumatoid-arthritis-involving-tibialis-posterior-tendon-study-on-the-early-diagnostic-value-of-power-doppler-ultrasonography-and-comparison-with-surgery
#7
J Y Mao, X H Zhao, H Dai, X J Gao, L L Lu
Objective: To explore the value of power Doppler ultrasonography (PDUS) in the early diagnosis of tibialis posterior tendon injury induced by rheumatoid arthritis (RA). Method: From January 2014 to December 2015, a total of 48 cases (60 feet) of RA tendinopathy group were selected as the research subjects from Guanghua Hospital; 12 cases(20 feet) of non-RA tendinopathy group and 10 cases (20 feet) of healthy volunteers were selected as control group.The blood flow signals of pannus were observed by PDUS to determine whether the tendon was injured or the degree of the injury...
November 8, 2016: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/27784806/contractile-function-and-motor-unit-firing-rates-of-the-human-hamstrings
#8
Eric A Kirk, Charles L Rice
: Neuromuscular properties of the lower limb in health, aging, and disease are well described for major lower limb muscles comprising the quadriceps, triceps surae, and dorsiflexors, with the notable exception of the posterior thigh (hamstrings). The purpose of this study was to further characterize major muscles of the lower limb by comprehensively exploring contractile properties in relation to spinal motor neuron output expressed as motor unit firing rates (MUFRs) in the hamstrings of 11 (26...
January 1, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/27725887/training-specific-neural-plasticity-in-spinal-reflexes-after-incomplete-spinal-cord-injury
#9
Atif S Khan, Susan K Patrick, Francois D Roy, Monica A Gorassini, Jaynie F Yang
The neural plasticity of spinal reflexes after two contrasting forms of walking training was determined in individuals with chronic, motor-incomplete spinal cord injury (SCI). Endurance Training involved treadmill walking for as long as possible, and Precision Training involved walking precisely over obstacles and onto targets overground. Twenty participants started either Endurance or Precision Training for 2 months and then crossed over after a 2-month rest period to the other form of training for 2 months...
2016: Neural Plasticity
https://www.readbyqxmd.com/read/27721087/selective-activation-of-lower-leg-muscles-during-maximum-voluntary-isometric-contractions
#10
Marco Hagen, Gerrit Schwiertz, Karl B Landorf, Hylton B Menz, George S Murley
The pronators and supinators play a key role in the medio-lateral stability of the ankle joint complex (i.e. talo-crural and subtalar joints). We hypothesized that each shank muscle has a specific activation pattern determined by its anatomical course around the axes of the subtalar and talo-crural joints. A secondary objective was to examine the effect of foot posture on these activation patterns. Forty-nine young adults (25 normal-arched feet, 24 flat-arched feet) performed maximum voluntary isometric contractions against manual resistance in four movement directions: plantarflexion (PF), dorsiflexion (DF), pronation (PRO) and supination (SUP)...
December 2016: Human Movement Science
https://www.readbyqxmd.com/read/27676757/sensory-information-treatment-during-disturbed-standing-posture-in-chronic-acquired-demyelinating-polyneuropathies-cadp
#11
Clément Provost, Giulia Piccinini, Sophie Tasseel-Ponche, Pierre Lozeron, Bertrand Arnulf, Alain Yelnik
OBJECTIVE: As proposed after stroke, the study of reactions to a sensory stimulation allows to a better understanding of postural strategies. Below, we provide the analysis in chronic acquired demyelinating polyneuropathies (CADP). MATERIAL/PATIENTS AND METHODS: Prospective study of 25 healthy subjects (57±12years, 8M, 17F) and 25 CADP (66±14years, 20M, 5F) on stabilometric platform (Techno-Concept(®), France). Proprioception was disturbed by tendon vibration on Triceps Surae (TS) and Tibialis Anterior (TA)...
September 2016: Annals of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/27665350/characterization-of-three-dimensional-volumetric-strain-distribution-during-passive-tension-of-the-human-tibialis-anterior-using-cine-phase-contrast-mri
#12
Elisabeth R Jensen, Duane A Morrow, Joel P Felmlee, Naveen S Murthy, Kenton R Kaufman
Intramuscular pressure correlates strongly with muscle tension and is a promising tool for quantifying individual muscle force. However, clinical application is impeded by measurement variability that is not fully understood. Previous studies point to regional differences in IMP, specifically increasing pressure with muscle depth. Based on conservation of mass, intramuscular pressure and volumetric strain distributions may be inversely related. Therefore, we hypothesized volumetric strain would decrease with muscle depth...
October 3, 2016: Journal of Biomechanics
https://www.readbyqxmd.com/read/27665088/feasibility-and-reliability-of-using-an-exoskeleton-to-emulate-muscle-contractures-during-walking
#13
M Attias, A Bonnefoy-Mazure, G De Coulon, L Cheze, S Armand
Contracture is a permanent shortening of the muscle-tendon-ligament complex that limits joint mobility. Contracture is involved in many diseases (cerebral palsy, stroke, etc.) and can impair walking and other activities of daily living. The purpose of this study was to quantify the reliability of an exoskeleton designed to emulate lower limb muscle contractures unilaterally and bilaterally during walking. An exoskeleton was built according to the following design criteria: adjustable to different morphologies; respect of the principal lines of muscular actions; placement of reflective markers on anatomical landmarks; and the ability to replicate the contractures of eight muscles of the lower limb unilaterally and bilaterally (psoas, rectus femoris, hamstring, hip adductors, gastrocnemius, soleus, tibialis posterior, and peroneus)...
September 19, 2016: Gait & Posture
https://www.readbyqxmd.com/read/27640930/medial-displacement-calcaneal-osteotomy-a-comparison-of-screw-versus-locking-plate-fixation
#14
Amol Saxena, Rajan Patel
Locking plate fixation is becoming more popular for fixation of lower extremity osteotomies. The present study evaluated locking plate fixation compared with screw fixation in the medial displacement calcaneal osteotomy procedure, measuring the outcomes and rate of hardware removal. The procedure was performed on 30 patients, 31 times, with 17 undergoing single screw fixation and 14 undergoing locking plate fixation. The return to activity was 6.87 ± 1.43 months, including some patients for whom running was their main activity...
November 2016: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/27548784/acute-kinematic-and-kinetic-adaptations-to-wearable-resistance-during-sprint-acceleration
#15
Paul Macadam, Kim D Simperingham, John B Cronin
Wearable resistance (WR) in the form of weighted vests and shorts enables movement specific sprint running to be performed under load. The purpose of this study was to determine the acute changes in kinematics and kinetics when an additional load equivalent to 3% body mass (BM) was attached to the anterior or posterior surface of the lower limbs during sprint running. Nineteen male rugby athletes (age: 19.7 ± 2.3 years; body mass: 96.1 ± 16.5 kg; height: 181 ± 6.5 cm) volunteered to participate in the study...
August 18, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27545079/the-mechanical-function-of-the-tibialis-posterior-muscle-and-its-tendon-during-locomotion
#16
Jayishni N Maharaj, Andrew G Cresswell, Glen A Lichtwark
The tibialis posterior (TP) muscle is believed to provide mediolateral stability of the subtalar joint during the stance phase of walking as it actively lengthens to resist pronation at foot contact and then actively shortens later in stance to contribute to supination. Because of its anatomical structure of short muscle fibres and long series elastic tissue, we hypothesised that TP would be a strong candidate for energy storage and return. We investigated the potential elastic function of the TP muscle and tendon through simultaneous measurements of muscle fascicle length (ultrasound), muscle tendon unit length (musculoskeletal modelling) and muscle activation (intramuscular electromyography)...
October 3, 2016: Journal of Biomechanics
https://www.readbyqxmd.com/read/27502230/interosseous-membrane-window-size-for-tibialis-posterior-tendon-transfer-geometrical-and-mri-analysis
#17
Pablo Wagner, Cristian Ortiz, Omar Vela, Paul Arias, Diego Zanolli, Emilio Wagner
BACKGROUND: Tibialis posterior (TP) tendon transfer through the interosseous membrane is commonly performed in Charcot-Marie-Tooth disease. In order to avoid entrapment of this tendon, no clear recommendation relative to the interosseous membrane (IOM) incision size has been made. OBJECTIVE: Analyze the TP size at the transfer level and therefore determine the most adequate IOM window size to avoid muscle entrapment. METHODS: Eleven lower extremity magnetic resonances were analyzed...
September 2016: Foot and Ankle Surgery: Official Journal of the European Society of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/27489968/synovial-sarcoma-in-the-foot-of-a-5-year-old-childa-case-report
#18
Gary M Lepow, Daniel L Grimmer, Onya V Lemar, Evan A Bridges
The purpose of this case report is to present a rare finding of synovial sarcoma in a 5-year-old child. Most soft-tissue masses of the foot are too often presumed to be small and benign; therefore, compared with soft-tissue sarcomas, they are difficult to clinically differentiate and treat. A 5-year-old girl presented with a painful lesion that was diagnosed as synovial sarcoma after an excisional biopsy was performed. This was an unexpected finding of synovial sarcoma involving the tibialis posterior tendon of her right foot...
July 2016: Journal of the American Podiatric Medical Association
https://www.readbyqxmd.com/read/27476374/are-ultrasonographic-findings-like-periosteal-and-tendinous-edema-associated-with-medial-tibial-stress-syndrome-a-case-control-study
#19
Marinus Winters, Paulien Bon, Sascha Bijvoet, Eric W P Bakker, Maarten H Moen
OBJECTIVES: Medial tibial stress syndrome (MTSS) is one of the most common sporting injuries. As of yet, the development of effective therapeutic interventions to treat MTSS is hindered by the fact that its pathology is unknown. Our aim was to explore the pathology of MTSS, by assessing whether the presence of MTSS is related to periosteal, bony or tendinous abnormalities in the lower leg. DESIGN: Case-control study. METHODS: Participants with MTSS and athletic control participants were recruited from the same (high-risk) base population...
July 18, 2016: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/27436481/impaired-motor-preparation-and-execution-during-standing-reach-in-people-with-chronic-stroke
#20
Sandy McCombe Waller, Chieh-Ling Yang, Laurence Magder, Don Yungher, Vicki Gray, Mark W Rogers
Movement preparation of both anticipatory postural adjustments (APAs) and goal directed movement during a standing reaching task in adults with chronic hemiparesis and healthy controls was investigated. Using a simple reaction time paradigm, while standing on two separate force platforms, subjects received a warning light cue to "get ready to reach" followed 2.5s later by an imperative light cue to "reach as quickly as possible" with the paretic arm (matched arm for controls) to touch a target in front of them for a total of 90 trials...
September 6, 2016: Neuroscience Letters
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