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https://www.readbyqxmd.com/read/29146221/takedown-of-ankle-arthrodesis-with-insufficient-fibula-surgical-technique-and-intermediate-term-follow-up
#1
John M Schuberth, Jeffrey C Christensen, Chad Seidenstricker
Conversion of ankle arthrodesis to total ankle arthroplasty has recently gained popularity. However, technical challenges are present when treating patients without a sufficient fibular buttress. We describe a technique for restoration of an adequate fibular buttress using an iliac crest bone graft or malleolar relocation. The results of 10 patients with an average follow-up period of 56 (range 24 to 123) months are presented. Of the 10 patients, 3 underwent tricortical iliac bone augmentation of the fibula, 4 underwent repositioning of the remnant fibula, and in 3, the in situ fibula was used...
November 14, 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29145965/increased-cytokine-levels-and-histological-changes-in-cartilage-synovial-cells-and-synovial-fluid-after-malleolar-fractures
#2
Alexandre L Godoy-Santos, Lucas Ranzoni, Walcy R Teodoro, Vera Capelozzi, Pedro Giglio, Tulio Diniz Fernandes, Stefan Rammelt
BACKGROUND: Malleolar fractures are among the most common fractures in the human skeleton with a high risk of later development of post-traumatic osteoarthritis (OA). The acute ankle injury initiates a sequence of events potentially leading to progressive articular surface damage resulting from inflammatory changes in cartilage, synovial tissue and synovial fluid. We hypothesised that in the acute phase of ankle fracture, these changes occur at the same time in the different tissues. METHODS: Specimens of chondral tissue, synovial tissue and synovial fluid were collected from 16 patients with acute articular ankle fracture (study group)...
October 2017: Injury
https://www.readbyqxmd.com/read/29144991/finite-element-simulation-on-posterior-tibial-tendinopathy-load-transfer-alteration-and-implications-to-the-onset-of-pes-planus
#3
Duo Wai-Chi Wong, Yan Wang, Aaron Kam-Lun Leung, Ming Yang, Ming Zhang
BACKGROUND: Posterior tibial tendinopathy is a challenging foot condition resulting in pes planus, which is difficult to diagnose in the early stage. Prior to the deformity, abnormal internal load transfer and soft tissue attenuation are anticipated. The objective of this study was to investigate the internal load transfer and strain of the ligaments with posterior tibial tendinopathy, and the implications to pes planus and other deformities. METHODS: A three-dimensional finite element model of the foot and ankle was reconstructed from magnetic resonance images of a 28-year-old normal female...
November 3, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/29139576/effects-of-lateral-offset-sole-shoes-on-knee-adduction-moment-in-women-with-medial-compartment-knee-osteoarthritis
#4
Woo Young Jang, Hae Woon Jung, Gi Won Choi, Hyun Min Lee, Hae Soo Park, Soon Hyuck Lee
This study aimed to determine the impact of wearing a lateral-offset sole shoe (LOSS) on knee adduction moment (KAM) in patients with medial knee osteoarthritis (OA). From December 2012 to November 2016, patients with medial knee OA were recruited. Ninety-three knees (50 left, 43 right) of 93 female patients were analyzed. The first peak KAMs were measured with patients 1) walking barefoot, 2) walking in conventional shoes, and 3) walking in LOSSs. The patients had grade 1 (n=19), grade 2 (n=49), grade 3 (n=20), and grade 4 (n=5) knee OA...
November 15, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29139051/subject-specific-finite-element-modelling-of-the-human-foot-complex-during-walking-sensitivity-analysis-of-material-properties-boundary-and-loading-conditions
#5
Mohammad Akrami, Zhihui Qian, Zhemin Zou, David Howard, Chris J Nester, Lei Ren
The objective of this study was to develop and validate a subject-specific framework for modelling the human foot. This was achieved by integrating medical image-based finite element modelling, individualised multi-body musculoskeletal modelling and 3D gait measurements. A 3D ankle-foot finite element model comprising all major foot structures was constructed based on MRI of one individual. A multi-body musculoskeletal model and 3D gait measurements for the same subject were used to define loading and boundary conditions...
November 14, 2017: Biomechanics and Modeling in Mechanobiology
https://www.readbyqxmd.com/read/29138920/concurrent-arthroscopic-osteochondral-lesion-treatment-and-lateral-ankle-ligament-repair-has-no-substantial-effect-on-the-outcome-of-chronic-lateral-ankle-instability
#6
Dong Jiang, Yin-Fang Ao, Chen Jiao, Xing Xie, Lin-Xin Chen, Qin-Wei Guo, Yue-Lin Hu
PURPOSE: The purpose of the study was to evaluate the effect of concurrent arthroscopic osteochondral lesion (OCL) treatment and lateral ankle ligament repair on the outcome of chronic lateral ankle instability. It was hypothesized that the arthroscopic OCL treatment might have some negative effect on the outcome of chronic lateral ankle instability (CLAI) by compromising the rehabilitation program. METHODS: Ankle arthroscopy and anatomic lateral ankle ligament repair with suture anchors were performed for 70 patients with CLAI between 2010 and 2012...
November 14, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29138918/anatomic-stabilization-techniques-provide-superior-results-in-terms-of-functional-outcome-in-patients-suffering-from-chronic-ankle-instability-compared-to-non-anatomic-techniques
#7
REVIEW
G Vuurberg, H Pereira, L Blankevoort, C N van Dijk
PURPOSE: To determine the best surgical treatment for chronic ankle instability (CAI) a systematic review was performed to compare the functional outcomes between various surgical stabilization methods. METHODS: A systematic search was performed from 1950 up to April 2016 using PubMed, EMBASE, Medline and the Cochrane Library. Inclusion criteria were a minimum age of 18 years, persistent lateral ankle instability, treatment by some form of surgical stabilization, described functional outcome measures...
November 14, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29136539/an-examination-of-lower-limb-asymmetry-in-ankle-isometric-force-control
#8
Sheng-Che Yen, Laura C Olsavsky, Caitlin M Cloonan, Amelia R Llanos, Kara J Dwyer, Mohsen Nabian, Amir Bahador Farjadian
While asymmetries have been observed between the dominant and non-dominant legs, it is unclear whether they have different abilities in isometric force control (IFC). The purpose of this study was to compare ankle IFC between the legs. IFC is important for stabilization rather than object manipulation, and people typically use their non-dominant leg for stabilization tasks. Additionally, studies suggested that a limb can better acquire a motor task when the control mechanism of the task is related to what the limb is specialized for...
November 11, 2017: Human Movement Science
https://www.readbyqxmd.com/read/29135783/beyond-the-bottom-of-the-foot-topographic-organization-of-the-foot-dorsum-in-walking
#9
Taryn Klarner, Gregory E P Pearcey, Yao Sun, Trevor S Barss, Chelsea Kaupp, Bridget Munro, Nick Frank, E Paul Zehr
INTRODUCTION: Sensory feedback from the foot dorsum during walking has only been studied globally by whole nerve stimulation. Stimulating the main nerve innervating the dorsal surface produces a functional stumble corrective response that is phase-dependently modulated. We speculated that effects evoked by activation of discrete skin regions on the foot dorsum would be topographically organized, as with the foot sole. METHODS: Nonnoxious electrical stimulation was delivered to five discrete locations on the dorsal surface of the foot during treadmill walking...
December 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29126039/the-resistance-to-failure-of-spring-ligament-reconstruction
#10
Chandra Pasapula, Adam Devany, Nicole C Fischer, Coen A Wijdicks, Tim Hübner, Franziska Reifenscneider, Sajid Shariff
INTRODUCTION: The spring ligament (SL) is increasingly recognised as the major structure that fails in acquired adult flatfoot deformity (AAFD). This is the first study that demonstrates integrity of repair of the SL. PATIENTS AND METHODS: Six pairs of fresh frozen cadavers were setup in a standardised fashion with ankle in plantargrade (mean age 59 years, BMI 25). A 25N lateral force was applied to the medial metatarsal head using an algometer. Lateral displacement of the foot was measured with SL intact, sectioned, following FibreWire(®) repair, then Arthrex InternalBrace (IB) reconstruction, then with selective sectioning of each limb of the IB reconstruction...
June 3, 2017: Foot
https://www.readbyqxmd.com/read/29125503/patient-preferences-for-treatments-of%C3%A2-neuromuscular-diseases-a-systematic-literature-review
#11
Erik Landfeldt, Josefin Edström, Peter Lindgren, Hanns Lochmüller
BACKGROUND: Treatment decisions of neuromuscular diseases involve weighing clinical benefits and risks, as well as impact on patient social life, work status, other activities of daily living, and health-related quality of life. OBJECTIVE: To conduct a systemic literature review of patient preferences for treatments of neuromuscular diseases. METHODS: We searched Embase, Web of Science, and PubMed for full-text articles reporting results from studies of patient preferences for treatments of neuromuscular diseases...
November 8, 2017: Journal of Neuromuscular Diseases
https://www.readbyqxmd.com/read/29122317/sonographic-and-anatomic-description-of-the-subtalar-joint
#12
Peter Mandl, David Bong, Peter V Balint, Hilde Berner Hammer, Maribel Miguel, Esperanza Naredo, Lene Terslev, Ingrid Möller
Our study provides a detailed anatomic and sonographic description of the subtalar joint, a single joint that, anatomically, is divided into the anterior subtalar joint (ASTJ) and the posterior subtalar joint (PSTJ). Cadaver specimens of the ankle and foot were examined in detail by ultrasound (US), and the subtalar joints of all the specimens were injected with colored latex of a contrasting color under US guidance. Compatible with other studies, examination of the sections revealed lack of communication between the ASTJ and the PSTJ and communication between the PSTJ and the posterior recess of the tibiotalar joint...
November 6, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/29120005/peripheral-neuropathy-due-to-recreational-use-of-nitrous-oxide-presenting-after-an-ankle-sprain-with-foot-drop
#13
Jackson A Middleton, John A Roffers
A 22-year-old man was referred for orthopedic follow-up after an ankle injury. Initial evaluation in urgent care included radiographs with negative findings. After a delayed presentation, a course of functional treatment was recommended. Subsequently, he developed a deep venous thrombosis and pulmonary emboli. He was found to be factor V Leiden deficient and was fully anticoagulated on warfarin. Later reevaluation revealed a steppage gait and foot drop. Electrodiagnostic studies (ie, electromyography and nerve conduction studies) revealed a severe peripheral polyneuropathy...
November 8, 2017: Orthopedics
https://www.readbyqxmd.com/read/29116830/hip-strength-as-a-predictor-of-ankle-sprains-in-male-soccer-players-a-prospective-study
#14
Christopher M Powers, Navid Ghoddosi, Rachel K Straub, Khalil Khayambashi
CONTEXT:   Diminished hip-abductor strength has been suggested to increase the risk of noncontact lateral ankle sprains. OBJECTIVE:   To determine prospectively whether baseline hip-abductor strength predicts future noncontact lateral ankle sprains in competitive male soccer players. DESIGN:   Prospective cohort study. SETTING:   Athletic training facilities and various athletic fields. PATIENTS OR OTHER PARTICIPANTS:   Two hundred ten competitive male soccer players...
November 8, 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/29112474/mri-evaluation-of-midtarsal-chopart-sprain-in-the-setting-of-acute-ankle-injury
#15
William R Walter, Anna Hirschmann, Erin F Alaia, Elisabeth R Garwood, Zehava S Rosenberg
OBJECTIVE: This study determined the frequency and MRI appearance of osseous and ligamentous injuries in midtarsal (Chopart) sprains and their association with ankle sprains after acute ankle injuries. Prospective diagnosis of and interobserver agreement regarding midtarsal injury among musculoskeletal radiologists were also assessed. SUBJECTS AND METHODS: Two cohorts with ankle MRIs were identified via a digital PACS search: patients who had undergone MRI within 8 weeks after ankle injury and control subjects who had not sustained ankle trauma...
November 7, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29110366/energy-dissipation-differs-between-females-with-and-without-chronic-ankle-instability
#16
Ryan S McCann, Masafumi Terada, Kyle B Kosik, Phillip A Gribble
Chronic ankle instability (CAI) is associated with altered energy dissipation patterns, but comparisons to lateral ankle sprain (LAS) copers have not been explored. The purpose of this study was to examine differences in relative sagittal plane energy dissipation during a single-leg landing between female CAI and LAS coper participants. We separated 33 females (23.6±4.6yrs, 164.3±6.2cm, 69.4±13.7kg) into CAI (n=17) and LAS coper (n=16) groups. Participants completed five single-leg landings followed by a 5-second stabilization...
November 7, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/29103892/analysis-of-two-different-arthroscopic-brostr%C3%A3-m-repair-constructs-for-treatment-of-chronic-lateral-ankle-instability-in-110-patients-a-retrospective-cohort-study
#17
James M Cottom, Joseph Baker, Britton S Plemmons
Chronic lateral ankle instability is a common condition treated by most foot and ankle surgeons. Once conservative treatment has failed, patients often undergo surgical reconstruction, either anatomic or nonanatomic. The present retrospective cohort study compared the clinical outcomes of 2 different arthroscopic Broström procedures. A total of 110 patients (83 females [75.5%] and 27 males [24.5%]) were treated with 1 of the 2 lateral ankle stabilization techniques from October 1, 2014 to December 31, 2015...
November 2, 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29098389/symptomatic-os-talus-secundarius-a-case-report-and-review-of-the-literature
#18
Ozkan Kose, Hasan May, Baver Acar, Melih Unal
Os talus secundarius is an extremely rare accessory ossicle located at the lateral aspect of the talus just anterior to the fibula. Although rarely seen, it may cause lateral-sided chronic ankle pain. Only a few cases of symptomatic os talus secundarius have been reported to date. Herein, a 42-year-old male patient with symptomatic os talus secundarius is presented, and its imaging findings, differential diagnosis, and treatment are discussed. LEVEL OF EVIDENCE: Level IV.
November 2, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/29094399/nonuniform-displacement-and-strain-between-the-soleus-and-gastrocnemius-subtendons-of-rat-achilles-tendon
#19
Taija Finni, Michel Bernabei, Guus C Baan, Wendy Noort, Chris Tijs, Huub Maas
Achilles tendon (AT) comprises of three subtendons arising from the soleus (SOL) and the lateral (LG) and medial (MG) heads of the gastrocnemius muscle. While recent human studies show differential displacement within AT, these displacement have not been attributed to specific subtendons. We tested the hypothesis that the SOL and LG subtendons show differential displacement and strain during various combinations of SOL, LG and MG excitations. Movement of knots, sutured onto SOL and LG subtendons of 12 Wistar rats, was videotaped while the muscles were stimulated intramuscularly and ankle torque was assessed...
November 1, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/29083363/a-pseudotumoral-lesion-diagnosed-for-a-hypertrofic-fibrosis-at-the-proximal-stump-in-anterior-tibialis-tendon-missed-rupture-a-case-report
#20
Elena M Samaila, Filippo Luiso, Giacomo Trivellin, Matteo Brunelli, Bruno Magnan
The Anterior Tibialis is the most important muscle in ankle dorsiflexion. The anterior tibialis tendon (ATT)'s rupture is an infrequent condition which can be both traumatic and spontaneous. Clinic is poor and it is necessary to confirm the suspect by US or MRI. The reported case refers to a 40 years old man who had a direct trauma at ankle and midfoot which was originally conservatively treated for an ankle sprain. Three months later he returned with pain, swelling and paresthesia. MRI was performed showing a neoformation in the contest of ATT's rupture...
October 18, 2017: Acta Bio-medica: Atenei Parmensis
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