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Ankle stability

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https://www.readbyqxmd.com/read/29037653/adolescent-idiopathic-scoliosis-the-tethered-spine-iii-is-fascial-spiral-the-key
#1
Lucy Whyte Ferguson
This article reports on an observational and treatment case series involving 22 adolescents and preadolescents treated over a 15 year period who had or appeared to be developing idiopathic scoliosis (IS). Common patterns of muscle and fascial asymmetry were observed and treated. Most of these individuals had spinal area pain and the trigger points (TrPs) apparently responsible for this pain were located in muscles at some distance from the spine, yet referred pain to locations throughout the thoracolumbar spine...
October 2017: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/28993013/right-cerebral-hemisphere-specialization-for-quiet-and-perturbed-body-balance-control-evidence-from-unilateral-stroke
#2
Corina Aparecida Fernandes, Daniel Boari Coelho, Alessandra Rezende Martinelli, Luis Augusto Teixeira
Our aim in this investigation was to assess the relative importance of each cerebral hemisphere in quiet and perturbed balance, based on uni-hemispheric lesions by stroke. We tested the hypothesis of right cerebral hemisphere specialization for balance control. Groups of damage either to the right (RHD, n=9) or the left (LHD, n=7) cerebral hemisphere were compared across tasks requiring quiet balance or body balance recovery following a mechanical perturbation, comparing them to age-matched nondisabled individuals (controls, n=24)...
October 7, 2017: Human Movement Science
https://www.readbyqxmd.com/read/28992742/the-effect-of-peroneal-muscle-strength-on-functional-outcomes-after-the-modified-brostr%C3%A3-m-procedure-for-chronic-ankle-instability
#3
Byung-Ki Cho, Ji-Kang Park, Seung-Myung Choi, Nelson F SooHoo
BACKGROUND: Although the peroneal muscles are known to be the major dynamic lateral stabilizers of the ankle, little information is available regarding the change in muscle strength and relation with the outcomes after lateral ligament repair surgery. The purpose of this study was to identify the effects of peroneal strength on the validated functional outcome measures after the modified Broström procedure (MBP) for chronic ankle instability. METHODS: Forty-one patients (41 ankles) who underwent MBP using suture anchors were eligible and followed up to 2 years postoperatively...
October 1, 2017: Foot & Ankle International
https://www.readbyqxmd.com/read/28991043/kinetic-compensations-due-to-chronic-ankle-instability-during-landing-and-jumping
#4
Hyunsoo Kim, S Jun Son, Matthew K Seeley, J Ty Hopkins
INTRODUCTION: Skeletal muscles absorb and transfer kinetic energy during landing and jumping, which are common requirements of various forms of physical activity. Chronic ankle instability (CAI) is associated with impaired neuromuscular control and dynamic stability of the lower extremity. Little is known regarding an intra-limb, lower-extremity joint coordination of kinetics during landing and jumping for CAI patients. We investigated the effect of CAI on lower-extremity joint stiffness, and kinetic and energetic patterns across the ground contact phase of landing and jumping...
October 3, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28990633/a-tailor-made-exercise-program-for-improving-balance-and-mobility-in-older-adults-with-type-2-diabetes
#5
Thomas Ka-Wai Ng, Rachel Lai Chu Kwan, Sing Kai Lo, Gladys Lai-Ying Cheing
Effectiveness of an exercise program designed for improving postural control and mobility in older adults with type 2 diabetes was investigated. Ninety-three adults 65 or older diagnosed with type 2 diabetes and able to walk unaided were recruited. The intervention group received exercise training focused on ankle strengthening and mobility twice per week for 10 weeks. The control group did not participate in any exercise program. After 10 weeks, the intervention group showed significantly greater improvement in the mean Sensory Organization Test composite score (4...
October 6, 2017: Journal of Gerontological Nursing
https://www.readbyqxmd.com/read/28985578/standing-or-swaying-to-the-beat-discrete-auditory-rhythms-entrain-stance-and-promote-postural-coordination-stability
#6
Alexandre Coste, Robin N Salesse, Mathieu Gueugnon, Ludovic Marin, Benoît G Bardy
Humans seem to take social and behavioral advantages of entraining themselves with discrete auditory rhythms (e.g., dancing, communicating). We investigated the benefits of such an entrainment on posture during standing (spontaneous entrainment) and during a whole-body swaying task (intentional synchronization). We first evaluated how body sway was entrained by different auditory metronome frequencies (0.25, 0.5, and 1.0Hz). We then assessed the stabilizing role of auditory rhythms on postural control, characterized in a dynamical systems perspective by informational anchoring of the head (local stabilization) and fewer transitions from in-phase to anti-phase ankle-hip coordination (global stabilization)...
September 25, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28985487/lower-extremity-dynamics-of-walking-in-neuropathic-diabetic-patients-who-wear-a-forefoot-offloading-shoe
#7
Sicco A Bus, Josina C Maas, Nicoline M Otterman
BACKGROUND: A forefoot-offloading shoes has a negative-heel rocker outsole and is used to treat diabetic plantar forefoot ulcers, but its mechanisms of action and their association with offloading and gait stability are not sufficiently clear. METHODS: Ten neuropathic diabetic patients were tested in a forefoot-offloading shoe and subsequently in a control shoe with no specific offloading construction, both worn on the right foot (control shoe on left), while walking at 1...
October 2, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28980032/-rupture-of-the-tendon-of-the-tibialis-anterior-muscle-etiology-clinical-symptoms-and-treatment
#8
REVIEW
H Waizy, B Bouillon, C Stukenborg-Colsman, D Yao, S Ettinger, L Claassen, C Plaass, K Danniilidis, D Arbab
Ruptures of the tendon of the tibialis anterior muscle tend to occur in the context of degenerative impairments. This mainly affects the distal avascular portion of the tendon. Owing to the good compensation through the extensor hallucis longus and extensor digitorum muscles, diagnosis is often delayed. In addition to the clinical examination, magnetic resonance inaging (MRI) diagnostics are of particular importance, although damage or rupture of the tendon can also be demonstrated sonographically. Therapeutic measures include conservative or operative measures, depending on the clinical symptoms...
October 4, 2017: Der Unfallchirurg
https://www.readbyqxmd.com/read/28979588/management-of-osteochondral-lesions-of-the-talar-dome
#9
Chamnanni Rungprai, Joshua N Tennant, Ryan D Gentry, Phinit Phisitkul
Osteochondral lesion of the talus (OLT) is a common condition associated with ankle injury that brings challenges in the diagnosis and treatment. Symptoms related to this condition are nonspecific including pain, swelling, stiffness, and mechanical symptoms of locking and catching. While the natural history of the OLTs is not well understood, surgical treatment is often required especially in chronic cases and acute cases with displaced articular fragments. Arthroscopic treatment of the OLTs aims to restore ankle joint function and pain relief by the removal of the chondral or osteochondral fragment, debridement and stabilization of cartilage rim and subchondral bone, and stimulate healing of the bone and damaged cartilage...
2017: Open Orthopaedics Journal
https://www.readbyqxmd.com/read/28952799/biomechanical-consequences-of-subtalar-joint-arthroereisis-in-treating-posterior-tibial-tendon-dysfunction-a-theoretical-analysis-using-finite-element-analysis
#10
Duo Wai-Chi Wong, Yan Wang, Tony Lin-Wei Chen, Aaron Kam-Lun Leung, Ming Zhang
Subtalar joint arthroereisis (SJA) has been introduced to control the hyperpronation in cases of flatfoot. The objective of this study is to evaluate the biomechanical consequence of SJA to restore the internal stress and load transfer to the intact state from the attenuated biomechanical condition induced by posterior tibial tendon dysfunction (PTTD). A three-dimensional finite element model of the foot and ankle complex was constructed based on clinical images of a healthy female (age 28 years, height 165 cm, body mass 54 kg)...
September 27, 2017: Computer Methods in Biomechanics and Biomedical Engineering
https://www.readbyqxmd.com/read/28899558/arthroscopically-measured-syndesmotic-stability-after-screw-vs-suture-button-fixation-in-a-cadaveric-model
#11
Bart Lubberts, Bryan G Vopat, Jonathon C Wolf, Umile Giuseppe Longo, Christopher W DiGiovanni, Daniel Guss
BACKGROUND: Appropriate management of ankle syndesmotic instability is needed to prevent the development of complications. Previous biomechanical studies have evaluated movement of the fibula after screw or suture button fixations with different results, most likely being caused by variations in experimental setups that did not mirror the in vivo clinical setting. This study aimed to arthroscopically compare in a cadaveric model the stability of syndesmotic fixation with either a suture button or syndesmotic screw...
August 31, 2017: Injury
https://www.readbyqxmd.com/read/28877594/a-medial-malleolar-fleck-sign-may-predict-ankle-instability-in-ligamentous-supination-external-rotation-ankle-fractures
#12
Kenneth Nwosu, Brian Andrew Schneiderman, Stephen Joseph Shymon, Thomas Harris
BACKGROUND: Ankle joint stability dictates treatment in ligamentous supination external rotation ankle injuries (LSERAI). Investigation of the medial structures that support the ankle mortise is critical, and a small avulsion fracture, or "fleck", of the medial malleolus is occasionally encountered. This study aimed to assess the utility of this medial malleolus fleck sign (MMFS) in diagnosing instability requiring surgery in LSERAI. METHODS: This retrospective observational study examined 166 LSERAI at a single level I trauma center...
September 1, 2017: Foot & Ankle Specialist
https://www.readbyqxmd.com/read/28869185/gait-variability-and-motor-control-in-patients-with-knee-osteoarthritis-as-measured-by-the-uncontrolled-manifold-technique
#13
Gwenllian Fflur Tawy, Philip Rowe, Leela Biant
Knee osteoarthritis (OA) causes pain, reduced muscular strength and stiffness of the affected joint. In response, the motor control mechanism is altered, potentially compromising stability during acts of daily living. Reduced walking stability can be quantified in terms of gait variability. This study therefore aimed to identify and quantify the effects of knee arthritis on gait variability. Fifty adults (25 males/25 females) with end-stage OA of the knee sufficiently symptomatic to require joint replacement, walked on a self-paced treadmill for 2min...
August 18, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28860398/revision-anatomical-reconstruction-of-the-lateral-ligaments-of-the-ankle-augmented-with-suture-tape-for-patients-with-a-failed-brostr%C3%A3-m-procedure
#14
B K Cho, Y M Kim, S M Choi, H W Park, N F SooHoo
AIMS: The aim of this prospective study was to evaluate the intermediate-term outcomes after revision anatomical ankle ligament reconstruction augmented with suture tape for a failed modified Broström procedure. PATIENTS AND METHODS: A total of 30 patients with persistent instability of the ankle after a Broström procedure underwent revision augmented with suture tape. Of these, 24 patients who were followed up for more than two years were included in the study...
September 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28841865/comparison-of-outcomes-according-to-fixation-technique-following-the-modified-ludloff-osteotomy-for-hallux-valgus-in-patients-with-rheumatoid-arthritis
#15
Young-Hoon Jo, Ki-Chul Park, Young-Sik Song, Il-Hoon Sung
BACKGROUND: Clinical and radiological outcomes including fixation stability of osteotomy site were compared in rheumatoid arthritis (RA) patients who underwent modified Ludloff osteotomy to correct hallux valgus with osteotomy site fixation using two screws versus those who underwent additional fixation using a plate. METHODS: The fixation technique performed with two screws was used to fix the osteotomy sites following modified Ludloff osteotomy in 15 patients (15 feet, Group S), while the augmented plate fixation technique was used in 14 patients (16 feet, Group P)...
August 25, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28826786/surgical-treatment-of-chronic-lateral-ankle-instability-using-an-inferior-extensor-retinaculum-flap-a-retrospective-study
#16
Faycal Trichine, Toufik Friha, Azzedine Boukabou, Lamine Belaid, Terek Bouzidi, Mahdjoub Bouzitouna
Chronic lateral ankle instability causes significant problems with physical activity. The purpose of the present study was to evaluate the results of ligamentous retensioning combined with reinforcement using an extensor retinaculum flap. A consecutive series of 38 patients were included with a minimum follow-up duration of 2 years. The functional results were assessed using the Karlsson and American Orthopaedic Foot and Ankle Society scale scores. The pre- and postoperative radiologic assessment was performed using stress radiographs to measure varus tilt and anterior drawer tests...
August 17, 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/28814046/adaptive-control-of-an-actuated-ankle-foot-orthosis
#17
Victor Arnez-Paniagua, Hala Rifai, Yacine Amirat, Samer Mohammed
This paper deals with the control of an active ankle foot orthosis (AAFO) to assist the gait of paretic patients. The AAFO system is driven by both, the residual human torque delivered by the muscles spanning the ankle joint and the AAFO's actuator's torque. A projection-based model reference adaptive control is proposed to assist dorsiflexion and plantar-flexion of the ankle joint during daily living walking activities. Unlike most classical model-based controllers, the proposed one does not require any prior estimation of the system's (foot-AAFO) parameters...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813971/feasibility-study-of-transtibial-amputee-walking-using-a-powered-prosthetic-foot
#18
Martin Grimmer, Matthew Holgate, Jeffrey Ward, Alexander Boehler, Andre Seyfarth
Passive prosthetic feet are not able to provide non-amputee kinematics and kinetics for the ankle joint. Persons with amputations show reduced interlimb symmetry, slower walking speeds, and increased walking effort. To improve ankle range of motion and push off, various powered prosthetic feet were introduced. This feasibility study analyzed if predefined motor reference trajectories can be used to achieve non-amputee ankle biomechanics during walking with the powered prosthetic foot, Walk-Run Ankle. Trajectories were calculated using the desired ankle angle and ankle moment based spring deflection at a given spring stiffness...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813828/active-lower-limb-orthosis-with-one-degree-of-freedom-for-people-with-paraplegia
#19
Michal Gloger, Goro Obinata, Eiichi Genda, Jan Babjak, Yanling Pei
The main challenges of designing devices for paraplegic walking can be summarized into three groups, stability and comfort, high efficiency or low energy consumption, dimensions and weight. A new economical device for people with paraplegia which tackles all problems of the three groups is introduced in this paper. The main idea of this device is based on HALO mechanism. HALO is compact passive medial hip joint orthosis with contralateral hip and ankle linkage, which keeps the feet always parallel to the ground and assists swinging the leg...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28800713/application-of-high-speed-dual-fluoroscopy-to-study-in-vivo-tibiotalar-and-subtalar-kinematics-in-patients-with-chronic-ankle-instability-and-asymptomatic-control-subjects-during-dynamic-activities
#20
Koren E Roach, K Bo Foreman, Alexej Barg, Charles L Saltzman, Andrew E Anderson
BACKGROUND: Abnormal angular and translational (ie, kinematic) motion at the tibiotalar and subtalar joints is believed to cause osteoarthritis in patients with chronic ankle instability (CAI). METHODS: In this preliminary study the investigators quantified and compared in vivo tibiotalar and subtalar kinematics in 4 patients with CAI (3 women) and 10 control subjects (5 men) using dual fluoroscopy during a balanced, single-leg heel-rise and treadmill walking at 0...
August 1, 2017: Foot & Ankle International
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