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https://www.readbyqxmd.com/read/29897865/the-modulation-of-locomotor-speed-is-maintained-following-partial-denervation-of-ankle-extensors-in-spinal-cats
#1
Jonathan Harnie, Celia Côté-Sarrazin, Marie-France Hurteau, Etienne Desrochers, Adam Doelman, Nawal Amhis, Alain Frigon
Speed modulation requires spatiotemporal adjustments and altered neural drive to different muscles. The loss of certain muscles produces changes in the locomotor pattern and functional compensation. However, how the loss of specific muscles affects speed modulation has not been specifically investigated. Here, we denervated the lateral-gastrocnemius and soleus muscles unilaterally in seven cats that had recovered hindlimb locomotion following complete spinal transection (spinal cats). Hindlimb locomotion was tested at ten speeds, from 0...
June 13, 2018: Journal of Neurophysiology
https://www.readbyqxmd.com/read/29870933/motor-adaption-during-repeated-motor-control-testing-attenuated-muscle-activation-without-changes-in-response-latencies
#2
Christopher M Hill, Sam Wilson, J Grant Mouser, Paul T Donahue, Harish Chander
With repeated exposure to postural perturbations the human postural control system can adapt and create efficient strategies to counteract these perturbations. The Motor Control Test (MCT) is commonly used to elicit reactionary postural movements. Though this device has been assessed for possible learning effects and reliability of composite scores, yet no study has evaluated possible neuromuscular alterations repeated bouts might elicit. Twenty participants (age: 25 ± 4.73 years; height: 183.8 ± 8...
May 28, 2018: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/29865087/relationships-between-lower-limb-muscle-strength-impairments-and-physical-limitations-in-dm1
#3
Émilie Petitclerc, Luc J Hébert, Jean Mathieu, Johanne Desrosiers, Cynthia Gagnon
BACKGROUND: Although adult and late-onset DM1 phenotypes DM1 present distinct lower limb weaknesses portraits, resulting physical limitations have never been described separately for each phenotype. OBJECTIVE: To characterize the lower limb weaknesses and physical limitations among the DM1 adult and late-onset phenotypes separately and to document the contribution of weaknesses on mobility to optimize the management of this population. METHODS: The strength of four muscle groups among 198 participants was quantified...
2018: Journal of Neuromuscular Diseases
https://www.readbyqxmd.com/read/29806329/-clinical-application-of-anterolateral-thigh-polyfoliate-perforator-flap-for-vascular-pedicle-protection
#4
Hai Li, Chengliang Deng, Zairong Wei, Wenhu Jin, Kaiyu Nie, Xiujun Tang, Dali Wang, Shusen Chang, Shujun Li
Objective: To evaluate the effectiveness of anterolateral thigh polyfoliate perforator flap plus pedicle with one foliate flap for repairing extremities soft tissue defect. Methods: Between January 2014 and January 2017, 24 patients with extremities soft tissue defects were treated by anterolateral thigh polyfoliate perforator flap plus pedicle with one foliate flap. There were 15 males and 9 females, with a median age of 33.5 years (range, 5-64 years). Wounds located in upper limb in 8 cases, complicated with radial styloid fracture in 1 case, extensor tendon exposure in 3 cases, and brachioradialis muscle tendon exposed in 1 case...
August 1, 2017: Chinese Journal of Reparative and Reconstructive Surgery
https://www.readbyqxmd.com/read/29800796/differences-in-lower-limb-biomechanics-between-ballet-dancers-and-non-dancers-during-functional-landing-tasks
#5
Annissa Harwood, Amity Campbell, Danica Hendry, Leo Ng, Catherine Y Wild
OBJECTIVES: To determine the differences in the lower limb landing biomechanics of adolescent ballet dancers compared to non-dancers when performing a hop and a stop jump task. DESIGN: Cross-sectional. SETTING: Laboratory. PARTICIPANTS: Thirteen adolescent female ballet dancers (11.8 ± 1.1 years) and 17 non-dancers (10.9 ± 0.8 years) performed hop and stop jump tasks. MAIN OUTCOME MEASURES: Vertical ground reaction force, and three-dimensional ankle, knee and hip joint angles and moments during the landing phase...
May 9, 2018: Physical Therapy in Sport
https://www.readbyqxmd.com/read/29785524/a-9-year-follow-up-study-of-quantitative-muscle-strength-changes-in-myotonic-dystrophy-type-1
#6
Cynthia Gagnon, Émilie Petitclerc, Marie Kierkegaard, Jean Mathieu, Élise Duchesne, Luc J Hébert
Myotonic dystrophy type 1 (DM1) is a neuromuscular disorder presenting with major muscle impairments. However, few studies have addressed muscle strength progression using quantitative methods. The aims of this study were to document muscle strength changes in eight muscle groups among adults with DM1 over a 9-year period, and to compare this progression between phenotypes (adult and late-onset) and sex. Patients with a genetic diagnosis of DM1 with the late-onset or the adult phenotype were recruited at baseline through the clinical registry of the Saguenay Neuromuscular Clinic...
May 21, 2018: Journal of Neurology
https://www.readbyqxmd.com/read/29768121/a-biomechanical-comparison-of-initial-sprint-acceleration-performance-and-technique-in-an-elite-athlete-with-cerebral-palsy-and-able-bodied-sprinters
#7
Ian N Bezodis, James Cowburn, Adam Brazil, Rhian Richardson, Cassie Wilson, Timothy A Exell, Gareth Irwin
Cerebral palsy is known to generally limit range of motion and force producing capability during movement. It also limits sprint performance, but the exact mechanisms underpinning this are not well known. One elite male T36 multiple-Paralympic sprint medallist (T36) and 16 well-trained able-bodied (AB) sprinters each performed 5-6 maximal sprints from starting blocks. Whole-body kinematics (250 Hz) in the block phase and first two steps, and synchronised external forces (1,000 Hz) in the first stance phase after block exit were combined to quantify lower limb joint kinetics...
May 16, 2018: Sports Biomechanics
https://www.readbyqxmd.com/read/29767228/whiplash-injury-results-in-sustained-impairments-of-cervical-muscle-function-a-one-year-prospective-controlled-study
#8
Søren Krogh, Helge Kasch
OBJECTIVE: To investigate the temporal development of neck muscle function following whiplash injuries. DESIGN: A 1-year prospective, controlled observational study. SUBJECTS: A total of 141 individuals exposed to whiplash injury due to rear-end vehicle collisions and 40 age- and sex-matched controls with acute ankle distortion. METHODS: Neck muscle strength and endurance during cervical flexion and extension were measured at 1 week, 1 month, 3 months, 6 months and 1 year after injury...
May 16, 2018: Journal of Rehabilitation Medicine
https://www.readbyqxmd.com/read/29760375/effect-of-ankle-range-of-motion-rom-and-lower-extremity-muscle-strength-on-static-balance-control-ability-in-young-adults-a-regression-analysis
#9
Seong-Gil Kim, Wan-Soo Kim
BACKGROUND The purpose of this study was to investigate the effect of ankle ROM and lower-extremity muscle strength on static balance control ability in young adults. MATERIAL AND METHODS This study was conducted with 65 young adults, but 10 young adults dropped out during the measurement, so 55 young adults (male: 19, female: 36) completed the study. Postural sway (length and velocity) was measured with eyes open and closed, and ankle ROM (AROM and PROM of dorsiflexion and plantarflexion) and lower-extremity muscle strength (flexor and extensor of hip, knee, and ankle joint) were measured...
May 15, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29753734/which-neuromuscular-attributes-are-associated-with-changes-in-mobility-among-community-dwelling-older-adults-with-symptomatic-lumbar-spinal-stenosis
#10
Catherine T Schmidt, Rachel E Ward, Pradeep Suri, Dan K Kiely, Richard Goldstein, Ni Pensheng, Dennis E Anderson, Jonathan F Bean
OBJECTIVES: To identify neuromuscular attributes associated with mobility and changes in mobility over two years of follow-up among patients with and without SLSS. DESIGN: Secondary analysis of a longitudinal cohort study. SETTING: Outpatient rehabilitation center. PARTICIPANTS: Community-dwelling older adults >65 years with self-reported mobility limitations. SLSS was determined using self-reported symptoms of neurogenic claudication and imaging-detected lumbar spinal stenosis...
May 10, 2018: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/29727309/differences-between-subtalar-instability-and-lateral-ankle-instability-focusing-on-subtalar-ligaments-based-on-three-dimensional-isotropic-magnetic-resonance-imaging
#11
Deuk Young Yoon, Sung Gyu Moon, Hong-Geun Jung, Na Ra Kim
OBJECTIVE: The purpose of this study was to assess the differences between subtalar instability (STI) and lateral ankle instability (LAI) focusing on subtalar ligaments using 3-dimensional (3D) isotropic magnetic resonance imaging (MRI). METHODS: Preoperative MRIs of 10 patients with STI who failed nonoperative treatment and consequently underwent arthroscopic subtalar reconstruction were compared with preoperative MRIs of 23 patients with LAI who underwent ligament repair or reconstruction...
April 28, 2018: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/29696322/-minimally-invasive-cheilectomy
#12
REVIEW
M Walther, P Chomej, S Kriegelstein, S Altenberger, A Röser
OBJECTIVES: Treatment of hallux rigidus by minimally invasive resection of the dorsal osteophytes, synovectomy and resection of the dorsal part of the metatarsal head. INDICATIONS: Hallux rigidus grades II and III CONTRAINDICATIONS: End-stage osteoarthritis of the first metatarsophalangeal joint with beginning ankylosis. SURGICAL TECHNIQUE: Osteophytes around the metatarsophalangeal joint are removed using a 1 cm incision dorsomedial, approximately 3 cm proximal of the joint space...
April 25, 2018: Operative Orthopädie und Traumatologie
https://www.readbyqxmd.com/read/29643592/does-trampoline-or-hard-surface-jumping-influence-lower-extremity-alignment
#13
Kiyokazu Akasaka, Akihiro Tamura, Aoi Katsuta, Ayako Sagawa, Takahiro Otsudo, Yu Okubo, Yutaka Sawada, Toby Hall
[Purpose] To determine whether repetitive trampoline or hard surface jumping affects lower extremity alignment on jump landing. [Subjects and Methods] Twenty healthy females participated in this study. All subjects performed a drop vertical jump before and after repeated maximum effort trampoline or hard surface jumping. A three-dimensional motion analysis system and two force plates were used to record lower extremity angles, moments, and vertical ground reaction force during drop vertical jumps. [Results] Knee extensor moment after trampoline jumping was greater than that after hard surface jumping...
December 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/29625411/joint-moment-strategies-during-stair-descent-in-patients-with-peripheral-arterial-disease-and-intermittent-claudication
#14
Stephanie L King, Natalie Vanicek, Thomas D O'Brien
OBJECTIVE: To determine the lower limb joint kinetic strategies during stair descent in claudicants with peripheral arterial disease (PAD-IC). DESIGN: Cross-sectional observation study. SETTING: University laboratory. PARTICIPANTS: A total of 22 participants; 10 healthy controls and 12 patients diagnosed with PAD-IC. MAIN OUTCOME MEASURES: Between-group comparisons of ground reaction force (GRF) and, hip, knee and ankle kinetics during steady-state stair descent...
May 2018: Gait & Posture
https://www.readbyqxmd.com/read/29623234/the-positive-benefits-of-negative-movement-patterns-following-total-knee-arthroplasty
#15
Jesse C Christensen, K Bo Foreman, Paul C LaStayo
Introduction: Eccentric (negative) resistance exercise of the legs using specialized machines has been reported to be useful and often superior to standard exercise following total knee arthroplasty (TKA). Movements that utilize body mass and gravity as a mode of eccentric resistance exercise in a more pragmatic rehabilitation paradigm may also be useful in reversing chronic muscle impairments observed years following surgery. This study explores whether an eccentrically biased, body mass resistance exercise induces greater magnitude of sagittal plane extensor angular impulse of the support torque and individual net joint torque contributions during both squatting and lunging movement patterns 6 weeks following TKA...
2018: Geriatric Orthopaedic Surgery & Rehabilitation
https://www.readbyqxmd.com/read/29588151/strength-of-the-lower-limb-and-trunk-muscles-is-associated-with-gait-speed-in-individuals-with-sub-acute-stroke-a-cross-sectional-study
#16
Larissa Tavares Aguiar, Ludimylla Brennar Alves Camargo, Lorena Dasdores Estarlino, Luci Fuscaldi Teixeira-Salmela, Christina Danielli Coelho de Morais Faria
OBJECTIVES: To investigate the association between measures of strength of the lower limb and trunk muscles and gait speed and to identify the muscle group that would best predict gait speed in individuals with sub-acute stroke. METHODS: Using a cross-sectional observational study design, forty-four individuals with sub-acute stroke (62 years, SD=14; 4 months, SD=1 post-stroke) were assessed. The evaluations were performed at a university laboratory, participants' homes, or community-based settings...
March 15, 2018: Brazilian Journal of Physical Therapy
https://www.readbyqxmd.com/read/29551259/ambulatory-capacity-in-japanese-patients-with-duchenne-muscular-dystrophy
#17
Hiroyuki Awano, Chieko Itoh, Yasuhiro Takeshima, Tomoko Lee, Masaaki Matsumoto, Akihiro Kida, Toshihiko Kaise, Takeo Suzuki, Masafumi Matsuo
INTRODUCTION: Few long-term cohort studies have addressed changes in the ambulatory capacity of patients with Duchenne muscular dystrophy (DMD), and no reports have evaluated the factors associated with ambulatory capacity in Japanese. METHODS: The longitudinal changes in 10-meter run/walk ability and associated factors were retrospectively investigated using general practice data. The factors associated with loss of this ability before the age of 10 years were explored by logistic regression analysis using parameters of genetic mutations, corticosteroid use, the manual muscle test (MMT), and the joint range of motion (ROM)...
June 2018: Brain & Development
https://www.readbyqxmd.com/read/29533252/the-effects-of-a-motorized-aquatic-treadmill-exercise-program-on-muscle-strength-cardiorespiratory-fitness-and-clinical-function-in-subacute-stroke-patients-a-randomized-controlled-pilot-trial
#18
So Young Lee, Eun Young Han, Bo Ryun Kim, Sang Hee Im
OBJECTIVE: The aim of this study was to assess the effects of a motorized aquatic treadmill exercise program improve the isometric strength of the knee muscles, cardiorespiratory fitness, arterial stiffness, motor function, balance, functional outcomes and quality of life in subacute stroke patients. DESIGN: Thirty-two patients were randomly assigned to 4-week training sessions of either aquatic therapy(n=19) or land-based aerobic exercise(n=18). Isometric strength was measured using an isokinetic dynamometer...
March 12, 2018: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/29526839/metatarsophalangeal-joint-flexion-affects-dorsiflexor-activity-in-subjects-with-a-dominant-extensor-hallucis-longus
#19
Ji-Hyun Lee, Hyo-Jung Jeong, Heon-Seock Cynn, Tae-Woo Kang
BACKGROUND AND OBJECTIVES: Normal dorsiflexion (DF) required for normal gait is achieved through balance of the tibialis anterior (TA) and extensor hallucis longus (EHL). Imbalance may induce ankle and foot deformities and exacerbate pathology. EHL dominance is associated with progressive TA weakness, attributable to muscle non-use. When the EHL dominantly dorsiflexes the ankle, the big toe extends at the metatarsophalangeal joint (MTPJ) and pure ankle DF is absent. The effects of active MTPJ flexion on TA and EHL muscles, TA/EHL ratio, and the force applied during active DF in EHL-dominant (EHL-D) and EHL-non-dominant (EHL-ND) subjects were compared...
March 2, 2018: Journal of Back and Musculoskeletal Rehabilitation
https://www.readbyqxmd.com/read/29517704/injury-of-leg-somatotopy-of-corticospinal-tract-at-corona-radiata-by-ventriculoperitoneal-shunt-a-case-report
#20
Sung Ho Jang, Younghyeon Kwon
RATIONALE: A 45-year-old right-handed female patient suffered head trauma after being hit by a truck that ran into a house. PATIENT CONCERNS: The patient lost consciousness for 1 hour and experienced posttraumatic amnesia for 1 month after the accident. DIAGNOSES: She underwent conservative management for a subdural hematoma in the left frontotemporal lobes and intracerebral hematoma in the left frontal lobe. INTERVENTIONS: The patient's Glasgow Coma Scale score was 11...
March 2018: Medicine (Baltimore)
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