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Ankle stability

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https://www.readbyqxmd.com/read/29678417/comparison-of-knee-injury-threshold-during-tibial-compression-based-on-limb-orientation-in-mice
#1
Allison W Hsia, Franklin D Tarke, Trevor J Shelton, Priscilla M Tjandra, Blaine A Christiansen
Our previous studies used tibial compression overload to induce anterior cruciate ligament (ACL) rupture in mice, while others have applied similar or greater compressive magnitudes without injury. The causes of these differences in injury threshold are not known. In this study, we compared knee injury thresholds using a "prone configuration" and a "supine configuration" that differed with respect to hip, knee, and ankle flexion, and utilized different fixtures to stabilize the knee. Right limbs of female and male C57BL/6 mice were loaded using the prone configuration, while left limbs were loaded using the supine configuration...
April 12, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/29677566/association-between-cumberland-ankle-instability-tool-score-and-postural-stability-in-collegiate-soccer-players-with-and-without-functional-ankle-instability
#2
Shun Kunugi, Akihiko Masunari, Naruto Yoshida, Shumpei Miyakawa
OBJECTIVE: The purpose of this study was to investigate the association between Cumberland Ankle Instability Tool (CAIT) scores and postural stability during a diagonal landing, and to investigate whether postural stability is altered in collegiate soccer players with and without functional ankle instability (FAI). DESIGN: Cross-sectional study. SETTING: Laboratory. PARTICIPANTS: Ninety-one soccer players were classified into a FAI group (history of at least two ankle sprains and a CAIT-Japanese version score ≤25, n = 28), a copers group (history of one ankle sprain and a CAIT-Japanese version score ≥26, n = 32), or a control group (no history of ankle sprain, n = 31)...
March 23, 2018: Physical Therapy in Sport
https://www.readbyqxmd.com/read/29673013/postural-control-during-a-transition-task-in-haemophilic-children-adolescents-and-young-adults-with-haemophilic-ankle-arthropathy
#3
K Deschamps, F Staes, M Eerdekens, K Peerlinck, C Hermans, J Vandesande, S Lobet
BACKGROUND: The aim of this study was to determine whether young haemophilic boys with and without MRI-based signs of ankle arthropathy demonstrate reduced balance ability during a transition task with eyes open and eyes closed. METHODS: Thirty-four haemophilic bodies and 28 typically developing boys aged 6-20 years participated to this study. Structural integrity of the tarsal foot joints of all haemophilic boys was assessed with MRI. All participants performed a standard transition task from double-leg stance to single-leg stance with eyes open and eyes closed...
April 19, 2018: Haemophilia: the Official Journal of the World Federation of Hemophilia
https://www.readbyqxmd.com/read/29660954/usability-of-the-thera-band%C3%A2-to-improve-foot-drop-in-stroke-survivors
#4
SunHae Song, JungHee Park, GyuDong Song, SeulGi Lee, YoHan Jo, MinKyung Jin, DongGeon Lee, SunHye Jung, SoungKyun Hong, SeungHoo Lee, SeungHyeon Pyo, GyuChang Lee
BACKGROUND: Stroke survivors show "foot drop", dragging their toes on the ground in the swing phase of gait. Ineffective ankle dorsiflexion may result in an abnormal gait pattern. OBJECTIVE: The purpose of this study was to investigate the effect of ankle Thera-Band® use on gait patterns in stroke survivors. METHODS: Gait data were collected in eight subjects who had had strokes using gait analysis system, both with and without the Thera-Band®...
April 7, 2018: NeuroRehabilitation
https://www.readbyqxmd.com/read/29652191/evaluation-and-significance-of-mortise-instability-in-supination-external-rotation-fibula-fractures-a-review-article
#5
John Y Kwon, Patrick Cronin, Brian Velasco, Christopher Chiodo
Evaluation and management of ankle fractures has progressed in parallel to an evolving understanding of ankle stability. While stability of the mortise had historically been attributed to the lateral malleolus, Lauge-Hansen's contributions followed by multiple other investigations increased the emphasis on the significance of medial-sided injury in destabilizing the mortise. As the importance of the deltoid ligament has been elucidated, the means of assessing ligamentous incompetence and the prognostic significance of an unstable mortise continue to be defined...
April 1, 2018: Foot & Ankle International
https://www.readbyqxmd.com/read/29626840/treadmill-walking-reduces-pre-frontal-activation-in-patients-with-parkinson-s-disease
#6
Pablo Cornejo Thumm, Inbal Maidan, Marina Brozgol, Shiran Shustak, Eran Gazit, Shirley Shema Shiratzki, Hagar Bernad-Elazari, Yoav Beck, Nir Giladi, Jeffrey M Hausdorff, Anat Mirelman
BACKGROUND: Among patients with Parkinson's disease (PD), gait is typically disturbed and less automatic. These gait changes are associated with impaired rhythmicity and increased prefrontal activation, presumably in an attempt to compensate for reduced automaticity. RESEARCH QUESTION: We investigated whether during treadmill walking, when the pace is determined and fixed, prefrontal activation in patients with PD is lower, as compared to over-ground walking. METHODS: Twenty patients with PD (age: 69...
March 28, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29614464/identifying-balance-impairments-in-people-with-parkinson-s-disease-using-video-and-wearable-sensors
#7
Emma Stack, Veena Agarwal, Rachel King, Malcolm Burnett, Fatemeh Tahavori, Balazs Janko, William Harwin, Ann Ashburn, Dorit Kunkel
BACKGROUND: Falls and near falls are common among people with Parkinson's (PwP). To date, most wearable sensor research focussed on fall detection, few studies explored if wearable sensors can detect instability. RESEARCH QUESTION: Can instability (caution or near-falls) be detected using wearable sensors in comparison to video analysis? METHODS: Twenty-four people (aged 60-86) with and without Parkinson's were recruited from community groups...
March 28, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29609637/primary-total-knee-arthroplasty-using-constrained-condylar-knee-design-for-severe-deformity-and-stiffness-of-knee-secondary-to-post-traumatic-arthritis
#8
Saroj Rai, Xianzhe Liu, Xiaobo Feng, Bimal Rai, Nira Tamang, Jing Wang, Shunan Ye, Shuhua Yang
BACKGROUND: Key to a successful outcome of total knee arthroplasty (TKA) is to attain optimum alignment, adequate balance, and deformity correction. In primary TKA, this can be achieved efficiently by posterior stabilized (PS) design with or without the sub-periosteal release. However, certain circumstances such as post-traumatic arthritis are often associated with severe deformities with a significant bone defect, stiffness, and instability. Such deformities are extremely difficult to balance with soft tissue release only and require additionally constrained prostheses even in primary TKA...
April 2, 2018: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/29600268/healing-of-complete-tear-of-the-anterior-talofibular-ligament-and-early-ankle-stabilization-after-autologous-platelet-rich-plasma-a-case-report-and-literature-review
#9
Mark Wai Wah Lai, Regina Wing Shan Sit
Lateral Ankle sprain (LAS) is a common sports injury associated with recurrent ankle sprain, chronic ankle instability (CAI) and post-traumatic ankle osteoarthritis (PTOA). Platelet Rich Plasma (PRP) has been increasingly used for herapeutic applications in sports-related injuries, and is thought to stimulate tissue healing. We reported a case of LAS with complete tear of anterior talofibular ligament, which showed complete healing of ligament and early ankle stabilization after PRP. The healing is supported by dynamic ultrasound images and magnetic resonance imaging...
March 2018: Archives of Bone and Joint Surgery
https://www.readbyqxmd.com/read/29587288/effect-of-sodium-thiosulfate-on-arterial-stiffness-in-end-stage-renal-disease-patients-undergoing-chronic-hemodialysis-sodium-thiosulfate-hemodialysis-study-a-randomized-controlled-trial
#10
Donlawat Saengpanit, Pairoj Chattranukulchai, Monravee Tumkosit, Monchai Siribumrungwong, Pisut Katavetin, Visith Sitprija, Kearkiat Praditpornsilpa, Somchai Eiam-Ong, Paweena Susantitaphong
BACKGROUND: Arterial stiffness (AS) and vascular calcification are significantly related to a high cardiovascular mortality risk in hemodialysis (HD) patients. Intravenous sodium thiosulfate (IV STS) can prevent and delay the vascular calcification progression in uremic states; however, the STS effect on AS has not been assessed. This study aimed to evaluate the STS efficacy on vascular calcification and AS in HD patients. METHODS: Fifty HD patients with abnormal AS, as measured via the cardio-ankle vascular index (CAVI ≥8), were prospectively randomized to open-label 12...
March 23, 2018: Nephron
https://www.readbyqxmd.com/read/29582777/a-simple-bipedal-model-for-studying-control-of-gait-termination
#11
Yasuyuki Suzuki, Hartmut Geyer
We study the control of human gait termination with a simple bipedal locomotion model. Several control strategies have been proposed for gait termination. However, the relative importance of these strategies has not been evaluated in models of human gait. Here we extend the bipedal spring mass walking model in a least parameter fashion and study three explicit control strategies for gait termination, including the shortening of the final step, braking at the ankle, and extending the knee. Applying the strategies separately, we find that only braking at the ankle reduces the propulsive force enough to transition into quiet standing...
March 27, 2018: Bioinspiration & Biomimetics
https://www.readbyqxmd.com/read/29581660/postural-stability-for-taekwondo-athletes-with-repetitive-ankle-sprains-during-a-single-leg-stance
#12
Minji Son, Changhong Youm, Jehwan Woo, Myeounggon Lee, Youkyung Kim, Jinhee Kim
[Purpose] The purpose of this study is to investigate postural stability in such group of taekwondo athletes by measuring the center-of-pressure variables in both the injured limb and uninjured limb during a single-leg stance with eyes closed. [Subjects and Methods] The study includes eleven taekwondo athletes with repetitive ankle sprains (RASs) and eleven healthy taekwondo athletes (the controls) at the college level participating in taekwondo training sessions. For the controls, the "injured" limb was taken to be the left limb...
March 2018: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/29569943/whole-body-vibration-training-and-balance-in-recreational-athletes-with-chronic-ankle-instability
#13
Rafael Sierra-Guzmán, Fernando Jiménez-Diaz, Carlos Ramírez, Paula Esteban, Javier Abián-Vicén
CONTEXT:   Deficits in the propioceptive system of the ankle contribute to chronic ankle instability (CAI). Recently, whole-body-vibration training has been introduced as a preventive and rehabilitative tool. OBJECTIVE:   To evaluate how a 6-week WBV training program on an unstable surface affected balance and body composition in recreational athletes with CAI. DESIGN:   Randomized controlled clinical trial. SETTING:   Research laboratory...
March 23, 2018: Journal of Athletic Training
https://www.readbyqxmd.com/read/29569688/surgical-treatment-of-displaced-intraarticular-calcaneus-fractures-using-anatomical-lateral-frame-plate
#14
İrfan Esenkaya, Fatih Türkmensoy, Bahattin Kemah, Oğuz Şükrü Poyanlı
BACKGROUND: The present study evaluated the results obtained from the anatomical lateral frame plate treatment of displaced intraarticular calcaneus fractures. METHODS: Overall, 14 displaced intraarticular fractures of 13 patients (3 females, 10 males; Mean age, 37.5 years) were included in the present study. Surgery was performed using widened lateral approach and supported by auto grafts following joint line reduction in all patients. They were then fixated by anatomical lateral frame plate...
March 2018: Ulusal Travma Ve Acil Cerrahi Dergisi, Turkish Journal of Trauma & Emergency Surgery: TJTES
https://www.readbyqxmd.com/read/29565045/types-of-falls-and-strategies-for-maintaining-stability-on-an-unstable-surface
#15
Michalina Błażkiewicz, Ida Wiszomirska, Katarzyna Kaczmarczyk, Andrzej Wit
BACKGROUND: Falls constitute an important health issue. They cause significant morbidity, mortality and have marked psychological effects on the individual, too. The aim of this study has been to determine parameters describing human movement strategies for balance and the reaction if balance is lost as a result of an unstable ground, and to attempt to describe the types of falls. MATERIAL AND METHODS: The study group comprised 20 volunteers. Kinematic parameters of falling and dynamic stability were measured using the Vicon Motion System and the Biodex Balance System SD...
March 15, 2018: Medycyna Pracy
https://www.readbyqxmd.com/read/29563533/profiling-walking-dysfunction-in-multiple-sclerosis-characterisation-classification-and-progression-over-time
#16
Linard Filli, Tabea Sutter, Christopher S Easthope, Tim Killeen, Christian Meyer, Katja Reuter, Lilla Lörincz, Marc Bolliger, Michael Weller, Armin Curt, Dominik Straumann, Michael Linnebank, Björn Zörner
Gait dysfunction is a common and relevant symptom in multiple sclerosis (MS). This study aimed to profile gait pathology in gait-impaired patients with MS using comprehensive 3D gait analysis and clinical walking tests. Thirty-seven patients with MS walked on the treadmill at their individual, sustainable speed while 20 healthy control subjects walked at all the different patient's paces, allowing for comparisons independent of walking velocity. Kinematic analysis revealed pronounced restrictions in knee and ankle joint excursion, increased gait variability and asymmetry along with impaired dynamic stability in patients...
March 21, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29560491/comparative-evaluation-between-anatomic-and-non-anatomic-lateral-ligament-reconstruction-techniques-in-the-ankle-joint-a-computational-study
#17
Tserenchimed Purevsuren, Myagmarbayar Batbaatar, Batbayar Khuyagbaatar, Kyungsoo Kim, Yoon Hyuk Kim
Biomechanical studies have indicated that the conventional non-anatomic reconstruction techniques for lateral ankle sprain (LAS) tend to restrict subtalar joint motion compared to intact ankle joints. Excessive restriction in subtalar motion may lead to chronic pain, functional difficulties, and development of osteoarthritis. Therefore, various anatomic surgical techniques to reconstruct both the anterior talofibular and calcaneofibular ligaments have been introduced. In this study, ankle joint stability was evaluated using multibody computational ankle joint model to assess two new anatomic reconstruction and three popular non-anatomic reconstruction techniques...
March 12, 2018: Journal of Biomechanical Engineering
https://www.readbyqxmd.com/read/29555896/talar-neck-fracture-with-dislocation-combined-with-bimalleolar-ankle-fracture-a-case-report
#18
Ahmad M Radaideh, Ziad A Audat, Abdullah A Saleh
BACKGROUND Fractures of the talus are uncommon injuries that usually involve the talar neck, rather than the talar body. This report is of a rare case of combined left talar neck fracture and adjacent joint dislocation with an ipsilateral bimalleolar ankle fracture. CASE REPORT A 37-year-old man presented with an injury to his left foot following a motor vehicle accident. When he presented to the hospital emergency department, his left foot and ankle were swollen, the overlying skin was intact but badly contused, and there was no neurovascular deficit...
March 20, 2018: American Journal of Case Reports
https://www.readbyqxmd.com/read/29548633/is-it-possible-to-overcompress-the-syndesmosis
#19
Piyush Mahapatra, Ben Rudge, Paul Whittingham-Jones
The case we present suggests that it might be possible to overcompress the syndesmosis, causing subluxation of the talus within the ankle mortise. A 26-year-old female patient had had a Weber Type C ankle fracture internally fixed with a lateral plate and syndesmosis screws. Despite the fibula appearing well reduced and computed tomography imaging showing a well-aligned fibula within the fibular notch, anteromedial subluxation of the talus was present in the ankle mortise. Examination with the patient under anesthesia revealed a stable syndesmosis fixation; however, talar malpositioning was not affected by the foot position...
March 13, 2018: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29544201/predictors-of-chronic-ankle-instability-analysis-of-peroneal-reaction-time-dynamic-balance-and-isokinetic-strength
#20
Rafael Sierra-Guzmán, Fernando Jiménez, Javier Abián-Vicén
BACKGROUND: Previous studies have reported the factors contributing to chronic ankle instability, which could lead to more effective treatments. However, factors such as the reflex response and ankle muscle strength have not been taken into account in previous investigations. METHODS: Fifty recreational athletes with chronic ankle instability and 55 healthy controls were recruited. Peroneal reaction time in response to sudden inversion, isokinetic evertor muscle strength and dynamic balance with the Star Excursion Balance Test and the Biodex Stability System were measured...
March 6, 2018: Clinical Biomechanics
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