keyword
MENU ▼
Read by QxMD icon Read
search

Ankle stability

keyword
https://www.readbyqxmd.com/read/28340588/comparison-of-the-com-fcp-inclination-angle-and-other-mediolateral-stability-indicators-for-turning
#1
Rui Xu, Xin Wang, Jiajia Yang, Feng He, Xin Zhao, Hongzhi Qi, Peng Zhou, Dong Ming
BACKGROUND: Studies have shown that turning is associated with more instability than straight walking and instability increases with turning angles. However, the precise relationship of changes in stability with the curvature and step length of turning is not clear. The traditional center of mass (COM)-center of pressure (COP) inclination angle requires the use of force plates. A COM-foot contact point (FCP) inclination angle derived from kinematic data is proposed in this study as a measure of the stability of turning...
March 24, 2017: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28336099/direct-fixation-of-fractures-of-the-posterior-pilon-via-a-posteromedial-approach
#2
Harm Hoekstra, Wouter Rosseels, Stefan Rammelt, Stefaan Nijs
The treatment of fractures of the posterior pilon is a timely issue. Restoration of the integrity of the incisura fibularis and subsequent anatomic reduction of the fibula are essential for reconstruction of the ankle mortise after trauma, and syndesmotic stability. Inappropriate treatment ultimately will lead to a poor functional outcome and quality of life. Open reduction and direct internal fixation through a posterolateral or posteromedial approach are increasingly preferred over indirect reduction and anteroposterior screw fixation...
March 19, 2017: Injury
https://www.readbyqxmd.com/read/28323803/patient-response-to-an-integrated-orthotic-and-rehabilitation-initiative-for-traumatic-injuries-the-prioriti-mtf-study
#3
Joseph R Hsu, Johnny G Owens, Jennifer DeSanto, John R Fergason, Kevin M Kuhn, Benjamin K Potter, Daniel J Stinner, Robert G Sheu, Sandra L Waggoner, Jason M Wilken, Yanjie Huang, Daniel O Scharfstein, Ellen J MacKenzie
Although limb salvage is now possible for many high-energy open fractures and crush injuries to the distal tibia, ankle, hindfoot, and midfoot, orthotic options are limited. The Intrepid Dynamic Exoskeletal Orthosis (IDEO) is a custom, energy-storing carbon fiber orthosis developed for trauma patients undergoing limb salvage. The IDEO differs from other orthoses in that it allows patients with ankle weakness to have more normal ankle biomechanics and increased ankle power. This article describes the design of a study to evaluate the effectiveness of the IDEO when delivered together with a high-intensity, sports medicine-based approach to rehabilitation...
April 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28321479/novel-anatomical-reconstruction-of-distal-tibiofibular-ligaments-restores-syndesmotic-biomechanics
#4
Jian Che, Chunbao Li, Zhipeng Gao, Wei Qi, Binping Ji, Yujie Liu, Ming Han Lincoln Liow
PURPOSE: To date, there is a paucity of literature on syndesmotic reconstruction techniques that restore both anatomic stability and physiologic syndesmotic biomechanics. In this cadaveric study, (1) a novel syndesmotic reconstruction surgical technique using autogenous peroneus brevis tendon was described and (2) the biomechanical properties of the reconstruction was investigated. METHODS: Ten fresh-frozen lower extremities were used in this study. Reconstruction of the anterior and posterior, as well as the interosseous tibiofibular ligaments was performed with a halved peroneus brevis tendon...
March 20, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28320508/staged-minimally-invasive-plate-osteosynthesis-of-proximal-tibial-fractures-with-acute-compartment-syndrome
#5
Joon-Woo Kim, Chang-Wug Oh, Jong-Keon Oh, Hee-Soo Kyung, Kyeong-Hyeon Park, Hee-June Kim, Jae-Wook Jung, Young-Soo Jung
PURPOSE: High-energy proximal tibial fractures often accompany compartment syndrome and are usually treated by fasciotomy with external fixation followed by secondary plating. However, the initial soft tissue injury may affect bony union, the fasciotomy incision or external fixator pin sites may lead to postoperative wound infections, and the staged procedure itself may adversely affect lower limb function. We assess the results of staged minimally invasive plate osteosynthesis (MIPO) for proximal tibial fractures with acute compartment syndrome...
March 11, 2017: Injury
https://www.readbyqxmd.com/read/28306181/total-ankle-replacement-in-patients-with-haemophilic-arthropathy-primary-arthroplasty-and-conversion-of-painful-ankle-arthrodesis-to-arthroplasty
#6
M Preis, T Bailey, M Jacxsens, A Barg
INTRODUCTION: There are two general surgical approaches for operative treatment of end-stage haemophilic ankle arthropathy: ankle arthrodesis and total ankle replacement (TAR). AIM: The aim of this study was to determine intraoperative and postoperative complications and evaluate the mid-term clinical and radiographic outcomes of TAR in patients with haemophilic arthropathy. METHODS: Fourteen patients with a mean age of 51.4 ± 10.2 years (range = 32...
March 17, 2017: Haemophilia: the Official Journal of the World Federation of Hemophilia
https://www.readbyqxmd.com/read/28296225/treatment-of-medial-malleolus-or-pure-deltoid-ligament-injury-in-patients-with-supination-external-rotation-type-iv-ankle-fractures
#7
Xu Wang, Chao Zhang, Jian-Wen Yin, Chen Wang, Jia-Zhang Huang, Xin Ma, Cheng-Wei Wang, Xue Wang
OBJECTIVE: To investigate the effect of internal fixation on postoperative ankle function in patients with supination-external rotation type IV ankle fractures, including medial malleolus fractures and deltoid ligament injury. METHODS: Between January 2012 and June 2014, patients with medial structure injuries were enrolled in this study and assigned to the medial malleolus fracture group or the deltoid ligament group. The surgical procedures for the two groups were documented...
March 10, 2017: Orthopaedic Surgery
https://www.readbyqxmd.com/read/28293302/3-d-computer-modelling-of-malunited-posterior-malleolar-fractures-effect-of-fragment-size-and-offset-on-ankle-stability-contact-pressure-and-pattern
#8
Teresa Alonso-Rasgado, David Jimenez-Cruz, Michael Karski
BACKGROUND: The positioning of the fracture fragment of a posterior malleolus fracture is critical to healing and a successful outcome as malunion of a posterior malleolar fracture, a condition seen in clinical practice, can affect the dynamics of the ankle joint, cause posterolateral rotational subluxation of the talus and ultimately lead to destruction of the joint. Current consensus is to employ anatomic reduction with internal fixation when the fragment size is larger than 25 to 33% of the tibial plafond...
2017: Journal of Foot and Ankle Research
https://www.readbyqxmd.com/read/28291180/dynamic-stress-testing-is-unnecessary-for-unimalleolar-supination-external-rotation-ankle-fractures-with-minimal-fracture-displacement-on-lateral-radiographs
#9
Simo Nortunen, Hannu-Ville Leskelä, Heidi Haapasalo, Tapio Flinkkilä, Pasi Ohtonen, Harri Pakarinen
BACKGROUND: This study aimed to identify factors from standard radiographs that contributed to the stability of the ankle mortise in patients with isolated supination-external rotation fractures of the lateral malleolus (OTA/AO 44-B). METHODS: Non-stress radiographs of the mortise and lateral views, without medial clear space widening or incongruity, were prospectively collected for 286 consecutive patients (mean age, 45 years [range, 16 to 85 years]), including 144 female patients (mean age, 50 years [range, 17 to 85 years]) and 142 male patients (mean age, 40 years [range, 16 to 84 years]) from 2 trauma centers...
March 15, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28268141/mitigating-risk-of-ankle-valgus-from-ankle-osteochondroma-resection-using-a-transfibular-approach-a-retrospective-study-with-six-years-of-follow-up
#10
Benjamin Appy-Fedida, Elie Krief, François Deroussen, Marie-Christine Plancq, Louis-Michel Collet, Céline Klein, Richard Gouron
To prevent worsening of ankle valgus and functional repercussions, a distal inter-tibiofibular osteochondroma can be removed using a transfibular approach. We evaluated the difference between the preoperative and postoperative tibiotalar tilt at the last follow-up examination and the clinical and radiologic outcomes. We included 10 consecutive ankles that had undergone removal of an osteochondroma using a transfibular approach. The mean patient age was 10.6 years. One ankle was lost to follow-up. The mean postoperative follow-up duration was 5...
March 3, 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/28263787/precise-coding-of-ankle-angle-and-velocity-by-human-calf-muscle-spindles
#11
Ryan M Peters, Brian H Dalton, Jean-Sébastien Blouin, J Timothy Inglis
Human standing balance control requires the integration of sensory feedback to produce anticipatory, stabilizing ankle torques. However, the ability of human triceps surae muscle spindles to provide reliable sensory feedback regarding the small, slow ankle movements that occur during upright standing has recently come under question. We performed microneurography to directly record axon potentials from single muscle spindle afferents in the human triceps surae during servo-controlled movement of the ankle joint...
March 2, 2017: Neuroscience
https://www.readbyqxmd.com/read/28262354/effects-of-joint-stabilizers-on-proprioception-and-stability-a-systematic-review-and-meta-analysis
#12
REVIEW
Shashank Ghai, Matthew Driller, Ishan Ghai
OBJECTIVE: The current review and meta-analysis systematically investigated the effect of joint stabilizers on proprioception, postural stability, and neurological activity. METHODS: Systematic identification of published literature was performed on online databases; Scopus, PEDro, SportDiscus, and EMBASE, followed by a critical PEDro methodological quality appraisal. Data from the studies were extracted and summarized in a tabular format. RESULTS: Of 2954 records, 50 studies, involving 1443 participants met our inclusion criteria...
May 18, 2016: Physical Therapy in Sport
https://www.readbyqxmd.com/read/28254684/attention-is-associated-with-postural-control-in-those-with-chronic-ankle-instability
#13
Adam B Rosen, Nicholas T Than, William Z Smith, Jennifer M Yentes, Melanie L McGrath, Mukul Mukherjee, Sara A Myers, Arthur C Maerlender
Chronic ankle instability (CAI) is often debilitating and may be affected by a number of intrinsic and environmental factors. Alterations in neurocognitive function and attention may contribute to repetitive injury in those with CAI and influence postural control strategies. Thus, the purpose of this study was to determine if there was a difference in attentional functioning and static postural control among groups of Comparison, Coper and CAI participants and assess the relationship between them within each of the groups...
February 24, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28253941/arthrodesis-of-the-ankle
#14
H Zwipp
About 90 % of all cases of painful posttraumatic ankle arthritis can be very successfully treated with a minor invasive ankle arthrodesis technique by using a small anterior approach and a fixation with four 6. 5 mm screws of which the posteromedial and transfibular one are inserted percutaneously. The results with this standardized procedure have been reported previously as excellent and good in a mid-term run of 6 years (34). This technique leads to a high union rate of 99% (92 of 93) with rapid bone healing within 8 ± 2 weeks, it causes a low minor complication rate of 8 % and enables a significant increase of the AOFAS ankle/hindfoot score (17) from 36 preoperatively to 85 postoperatively as well as a midtarsal movement of 24° ± 16°...
2017: Acta Chirurgiae Orthopaedicae et Traumatologiae Cechoslovaca
https://www.readbyqxmd.com/read/28220401/numerical-model-for-healthy-and-injured-ankle-ligaments
#15
Antonella Forestiero, Emanuele Luigi Carniel, Chiara Giulia Fontanella, Arturo Nicola Natali
The aim of this work is to provide a computational tool for the investigation of ankle mechanics under different loading conditions. The attention is focused on the biomechanical role of ankle ligaments that are fundamental for joints stability. A finite element model of the human foot is developed starting from Computed Tomography and Magnetic Resonance Imaging, using particular attention to the definition of ankle ligaments. A refined fiber-reinforced visco-hyperelastic constitutive model is assumed to characterize the mechanical response of ligaments...
February 20, 2017: Australasian Physical & Engineering Sciences in Medicine
https://www.readbyqxmd.com/read/28220261/does-a-foot-drop-implant-improve-kinetic-and-kinematic-parameters-in-the-foot-and-ankle
#16
Kiriakos Daniilidis, Eike Jakubowitz, Anna Thomann, Sarah Ettinger, Christina Stukenborg-Colsman, Daiwei Yao
INTRODUCTION: Unlike the drop foot therapy with ortheses, the therapeutic effect of an implantable peroneus nerve stimulator (iPNS) is not well described. IPNS is a dynamic therapy option which is placed directly to the motoric part of the peroneal nerve and evokes a dorsiflexion of the paralysed foot. This retrospective study evaluates the kinematics and kinetics in drop foot patients who were treated with an iPNS. MATERIALS AND METHODS: 18 subjects (mean age 51...
February 20, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28219308/perceived-risk-factors-for-nonunion-following-foot-and-ankle-arthrodesis
#17
Gowreeson Thevendran, Kalpesh Shah, Stephen J Pinney, Alastair Se Younger
BACKGROUND: A major complication of foot and ankle arthrodesis is nonunion, which occurs in approximately 12% of cases. Various factors influence a patient's risk for nonunion following foot and ankle arthrodesis. We surveyed international foot and ankle surgeons to determine (1) risk factors perceived most important for nonunion, (2) factors considered absolute contraindications for arthrodesis, and (3) differences among expert groups regarding perceived risk factors and their stratification...
January 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28186902/a-wearable-hip-assist-robot-can-improve-gait-function-and-cardiopulmonary-metabolic-efficiency-in-elderly-adults
#18
Hwang-Jae Lee, Suhyun Lee, Won Hyuk Chang, Keehong Seo, Youngbo Shim, Byung-Ok Choi, Gyu-Ha Ryu, Yun-Hee Kim
The aims of this study were to investigate the effectiveness of a newly developed wearable hip assist robot that uses an active assist algorithm to improve gait function, muscle effort, and cardiopulmonary metabolic efficiency in elderly adults. Thirty elderly adults (15 males/15 females) participated in this study. The experimental protocol consisted of overground gait at comfortable speed under three different conditions: free gait without robot assistance, robot-assisted gait with zero torque (RAG-Z), and full robot-assisted gait (RAG)...
February 6, 2017: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/28183211/3d-optical-investigation-of-2-nail-systems-used-in-tibiotalocalcaneal-arthrodesis
#19
Julia Evers, Martin Lakemeier, Dirk Wähnert, Martin Schulze, Martinus Richter, Michael J Raschke, Sabine Ochman
BACKGROUND: Although retrograde intramedullary nails for tibiotalocalcaneal arthrodesis (TTCA) are an established fixation method, few studies have evaluated the stability of the available nail systems. The purpose of this study was to compare biomechanically the primary stability of 2 nail-systems, A3 (Small Bone Innovations) and HAN (Synthes), in human cadavers and analyze the exact point of instability in TTCA by means of optical measurement. METHODS: In 6 pairs of lower legs (n = 12) of fresh-frozen human cadavers with osteoporotic bone structure, bone mineral density (BMD) was determined...
February 1, 2017: Foot & Ankle International
https://www.readbyqxmd.com/read/28169148/risk-factors-that-predict-severe-injuries-in-university-rugby-sevens-players
#20
Rezvan Mirsafaei Rizi, Simon S Yeung, Nathan J Stewart, Ella W Yeung
OBJECTIVES: To investigate injury incidence and the influence of physical fitness parameters on the risk of severe injuries in players on rugby sevens university teams. DESIGN: Prospective cohort study. METHODS: Rugby players from three universities (N=104; 90M:14F; 20.6±1.9years) were recruited before the beginning of the season. Players underwent pre-season assessments of power, strength, speed, agility, endurance, stability, and flexibility...
January 24, 2017: Journal of Science and Medicine in Sport
keyword
keyword
93019
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"