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Ankle instability

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https://www.readbyqxmd.com/read/28344462/effects-of-neuromuscular-training-on-the-rear-foot-angle-kinematics-in-elite-women-field-hockey-players-with-chronic-ankle-instability
#1
Eunkuk Kim, Hokyung Choi, Jung-Hoon Cha, Jong-Chul Park, Taegyu Kim
The aims of this study were to investigate the ankle position, the changes and persistence of ankle kinematics after neuromuscular training in athletes with chronic ankle instability (CAI). A total of 21 national women's field hockey players participated (CAI = 12, control = 9). Ankle position at heel strike (HS), midstance (MS), and toe touch (TT) in the frontal plane during walking, running and landing were measured using 3D motion analysis. A 6-week neuromuscular training program was undertaken by the CAI group...
March 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/28340588/comparison-of-the-com-fcp-inclination-angle-and-other-mediolateral-stability-indicators-for-turning
#2
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/28328865/novel-management-of-distal-tibial-and-fibular-fractures-with-acumed-fibular-nail-and-minimally-invasive-plating-osteosynthesis-technique-a-case-report
#3
Tie-Jun Wang, Wei-Na Ju, Bao-Chang Qi
RATIONALE: Anatomical characteristics, such as subcutaneous position and minimal muscle cover, contribute to the complexity of fractures of the distal third of the tibia and fibula. Severe damage to soft tissue and instability ensure high risk of delayed bone union and wound complications such as nonunion, infection, and necrosis. PATIENT CONCERNS: This case report discusses management in a 54-year-old woman who sustained fractures of the distal third of the left tibia and fibula, with damage to overlying soft tissue (swelling and blisters)...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28318316/bilateral-proprioceptive-evaluation-in-individuals-with-unilateral-chronic-ankle-instability
#4
Andreia S P Sousa, João Leite, Bianca Costa, Rubim Santos
CONTEXT: Despite extensive research on chronic ankle instability, the findings regarding proprioception have been conflicting and focused only on the injured limb. Also, the different components of proprioception have been evaluated in isolation. OBJECTIVE: To evaluate bilateral ankle proprioception in individuals with unilateral ankle instability. DESIGN: Cohort study. SETTING: Research laboratory center in a university...
March 20, 2017: Journal of Athletic Training
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
#5
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/28290704/predicting-manual-therapy-treatment-success-in-patients-with-chronic-ankle-instability-improving-self-reported-function
#6
Eric A Wikstrom, Patrick O McKeon
CONTEXT: Therapeutic modalities that stimulate sensory receptors around the foot-ankle complex improve chronic ankle instability (CAI)-associated impairments. However, not all patients have equal responses to these modalities. Identifying predictors of treatment success could improve clinician efficiency when treating patients with CAI. OBJECTIVE: To conduct a response analysis on existing data to identify predictors of improved self-reported function in patients with CAI...
March 14, 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/28268273/postural-flexibility-during-quiet-standing-in-healthy-elderly-and-patients-with-parkinson-s-disease
#7
Kazuyuki Matsuda, Yasuyuki Suzuki, Naoya Yoshikawa, Tomohisa Yamamoto, Ken Kiyono, Takao Tanahashi, Takuyuki Endo, Kei Fukada, Kunihiko Nomura, Saburo Sakoda, Taishin Nomura
Postural instability is one of the predominant symptoms of Parkinson's disease (PD). Despite its significant impact on the deterioration in quality of life in PD patients, mechanistic causes of the instability have not been clarified. Joint inflexibility at ankle and hip joints might be such a major cause, leading to small variability in the center of pressure (CoP) during quiet stance. However, this conjecture is still controversial. Thus, quantitative characterization of CoP patterns during quiet stance in PD patients remains a matter of research...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28263806/one-stage-computer-assisted-total-knee-arthroplasty-and-tibial-osteotomy
#8
S Denjean, F Chatain, O Tayot
Same-stage tibial osteotomy may deserve consideration in candidates to total knee arthroplasty (TKA) who have severe bone deformities, particularly at extra-articular sites. This strategy obviates the need for either a major and technically difficult ligament release procedure, which may compromise ligament balancing, or the use of a semi-constrained prosthesis. This technical note describes a one-stage, computer-assisted technique consisting in TKA, followed by corrective tibial osteotomy to obtain an overall mechanical axis close to 180° without extensive ligament balancing...
March 2, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28259751/cadaver-study-of-anatomic-landmark-identification-for-placing-ankle-arthroscopy-portals
#9
Benjamin Scheibling, Guillaume Koch, Philippe Clavert
BACKGROUND: Arthroscopy-assisted surgery is now widely used at the ankle for osteochondral lesions of the talus, anterior and posterior impingement syndromes, talocrural or subtalar fusion, foreign body removal, and ankle instability. Injuries to the vessels and nerves may occur during these procedures. OBJECTIVE: To determine whether ultrasound topographic identification of vulnerable structures decreased the risk of iatrogenic injuries to vessels, nerves, and tendons and influenced the distance separating vulnerable structures from the arthroscope introduced through four different portals...
March 1, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28254684/attention-is-associated-with-postural-control-in-those-with-chronic-ankle-instability
#10
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
#11
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/28236624/coronal-malalignment-in-the-adult-knee
#12
REVIEW
Carlos Uquillas, William Rossy, Eric Strauss
Coronal plane deformity in the adult patient is a complex clinical problem. Once the hip, knee, and ankle joint centers lose collinerarity, the knee is exposed to abnormal loads across its tibiofemoral compartments, leading to early degenerative changes. Malalignment can coexist with arthrosis and ligamentous instability. High tibial osteotomy and distal femoral osteotomy have been useful tools to realign the adult knee. They can be performed along with ligament reconstruction and cartilage restoration procedures with high success rates...
January 2017: Bulletin of the Hospital for Joint Diseases
https://www.readbyqxmd.com/read/28226430/postural-flexibility-during-quiet-standing-in-healthy-elderly-and-patients-with-parkinson-s-disease
#13
Kazuyuki Matsuda, Yasuyuki Suzuki, Naoya Yoshikawa, Tomohisa Yamamoto, Ken Kiyono, Takao Tanahashi, Takuyuki Endo, Kei Fukada, Kunihiko Nomura, Saburo Sakoda, Taishin Nomura, Kazuyuki Matsuda, Yasuyuki Suzuki, Naoya Yoshikawa, Tomohisa Yamamoto, Ken Kiyono, Takao Tanahashi, Takuyuki Endo, Kei Fukada, Kunihiko Nomura, Saburo Sakoda, Taishin Nomura, Kei Fukada, Naoya Yoshikawa, Tomohisa Yamamoto, Takuyuki Endo, Kunihiko Nomura, Taishin Nomura, Kazuyuki Matsuda, Ken Kiyono, Takao Tanahashi, Saburo Sakoda, Yasuyuki Suzuki
Postural instability is one of the predominant symptoms of Parkinson's disease (PD). Despite its significant impact on the deterioration in quality of life in PD patients, mechanistic causes of the instability have not been clarified. Joint inflexibility at ankle and hip joints might be such a major cause, leading to small variability in the center of pressure (CoP) during quiet stance. However, this conjecture is still controversial. Thus, quantitative characterization of CoP patterns during quiet stance in PD patients remains a matter of research...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28214465/acute-and-chronic-lateral-ankle-instability-diagnosis-management-and-new-concepts
#14
REVIEW
Rachel Shakked, Steven Sheskier
Lateral ankle instability is a common entity that can result in degenerative arthritis if left untreated. Acute ligament injuries should primarily be treated nonoperatively with a course of physical therapy and functional bracing. Chronic ankle instability is defined as mechanical or functional and can be diagnosed using a combination of history, physical examination, stress radiographs, and magnetic resonance imaging. After failure of nonoperative treatment, surgical treatment with anatomic ligament repair and inferior extensor retinaculum augmentation has the best clinical outcomes...
January 2017: Bulletin of the Hospital for Joint Diseases
https://www.readbyqxmd.com/read/28210052/effects-of-spiral-taping-on-proprioception-in-subjects-with-unilateral-functional-ankle-instability
#15
Young-Sook Bae
[Purpose] The Purpose of this study was to investigate the effects of spiral taping on proprioception in functional ankle instability. [Subjects and Methods] Thirty-five participants in this study had discomfort in only one ankle and Cumberland ankle instability score of ≤23. ST was applied to the unstable ankle, and proprioception was measured baseline and 30 min later. Proprioception was measured using the active joint angle reproduction test. [Results] Plantar flexions of 10° (ES, 0.303) and 20° (ES, 1...
January 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28199924/hip-ankle-coordination-during-gait-in-individuals-with-chronic-ankle-instability
#16
Sheng-Che Yen, Kevin K Chui, Marie B Corkery, Elizabeth A Allen, Caitlin M Cloonan
Individuals with chronic ankle instability (CAI) may have sensorimotor impairments that affect control at the hip in addition to the ankle. The purpose of this study was to compare hip-ankle coordination and coordination variability between individuals with CAI and healthy individuals during walking. Ten healthy subjects and 10 subjects with CAI were recruited to walk on a treadmill. Hip-ankle coordination was quantified using vector coding, and coordination variability was quantified using coefficient of correspondence...
March 2017: Gait & Posture
https://www.readbyqxmd.com/read/28199903/the-effect-of-variable-rest-intervals-and-chronic-ankle-instability-on-triplanar-ankle-motion-during-performance-of-the-star-excursion-balance-test
#17
Yong Ung Kwon, D S Blaise Williams
Inadequate rest intervals may contribute to impaired performance during functional tests. However, the effect of different rest intervals on performance of the SEBT in individuals with and without CAI is not known. Our purposes were to determine whether different rest intervals impact ankle kinematics during the SEBT and whether there differences between those two populations. 24 controls and 24 CAI completed 3 trials in 3 reach directions (anteromedial; AM, medial; M, posteromedial; PM). The order of rest intervals and reach distance were randomized and counterbalanced...
February 12, 2017: Human Movement Science
https://www.readbyqxmd.com/read/28187890/evaluation-of-a-smartphone-based-assessment-system-in-subjects-with-chronic-ankle-instability
#18
Ya-Lan Chiu, Yi-Ju Tsai, Chueh-Ho Lin, You-Ruei Hou, Wen-Hsu Sung
BACKGROUND: Ankle sprain is the most common sports-related injury, and approximately 80% of patients studied suffered recurrent sprains. These repeated ankle injuries could cause chronic ankle instability, a decrease in sports performance, and a decrease in postural control ability. At the present time, smartphones have become very popular and powerful devices, and smartphone applications (apps) that have been shown to have good validity have been designed to measure human body motion...
February 2017: Computer Methods and Programs in Biomedicine
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/28182859/radiographic-study-of-pes-planovarus
#20
Janic Aebi, Monika Horisberger, Arno Frigg
BACKGROUND: Depending on the direction of the subtalar joint, a foot deformity generally tends towards pronation (pes planovalgus) or supination (pes cavovarus). However, the combination of hindfoot varus and flat midfoot/forefoot (pes planovarus) is an exception to this rule. Pes planovarus has so far only been referred to in connection with Müller-Weiss disease and congenital disease. We diagnosed pes planovarus in otherwise healthy patients without these diseases. METHODS: Forty patients with 54 symptomatic feet who were treated between August 2012 and July 2016 were included (mean age, 44...
February 1, 2017: Foot & Ankle International
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