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https://www.readbyqxmd.com/read/28343329/stress-fractures-of-the-foot-and-ankle-part-2-site-specific-etiology-imaging-and-treatment-and-differential-diagnosis
#1
Jacob C Mandell, Bharti Khurana, Stacy E Smith
Stress fractures of the foot and ankle are a commonly encountered problem among athletes and individuals participating in a wide range of activities. This illustrated review, the second of two parts, discusses site-specific etiological factors, imaging appearances, treatment options, and differential considerations of stress fractures of the foot and ankle. The imaging and clinical management of stress fractures of the foot and ankle are highly dependent on the specific location of the fracture, mechanical forces acting upon the injured site, vascular supply of the injured bone, and the proportion of trabecular to cortical bone at the site of injury...
March 25, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28323767/how-to-get-to-the-distal-posterior-tibial-malleolus-a-cadaveric-anatomic-study-defining-the-access-corridors-through-3-different-approaches
#2
Mathieu Assal, Miki Dalmau-Pastor, Adrien Ray, Richard Stern
OBJECTIVE: Our objective is to review the anatomy and exposure of the posterior column and posterior tibial malleolus (the posterior tibial plafond) by defining the access corridors through 3 different approaches-posteromedial, posterolateral, and modified posteromedial. METHODS: Cadaveric dissection with percentage of posterior tibial malleolus exposed, and strain gauge measurements to evaluate traction on the neurovascular bundle. RESULTS: The 3 different approaches are applicable for exposure of different portions of the distal posterior tibial malleolus...
April 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28297828/-treatment-of-geriatric-ankle-osteoarthritis-by-arthrodesis-with-screw-fixation-through-lateral-malleolus-osteotomy
#3
W Q Qu, Z H Wang, J Y Zhang, S J Dong, D Wang
Objective: To evaluate the Treatment effect of geriatric ankle osteoarthritis by arthrodesis with screw fixation through lateral malleolus osteotomy. Methods: Thirty-three patients with severe osteoarthritis according to the classification of Takakura-Tanakawere treated by ankle arthrodesis through lateral malleolus osteotomy with screw fixation from January 2010 to June 2015. Twenty-five patients were combined with more than 1 internal diseases. Twenty-six patients owned ankle injury history. Clinical and radiologic evaluations were performed before surgery and at the most recent follow-up...
March 7, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
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
#4
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
#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/28291180/dynamic-stress-testing-is-unnecessary-for-unimalleolar-supination-external-rotation-ankle-fractures-with-minimal-fracture-displacement-on-lateral-radiographs
#6
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/28279427/finite-element-analysis-of-the-three-different-posterior-malleolus-fixation-strategies-in-relation-to-different-fracture-sizes
#7
Adeel Anwar, Decheng Lv, Zhi Zhao, Zhen Zhang, Ming Lu, Muhammad Umar Nazir, Wasim Qasim
PURPOSE: Appropriate fixation method for the posterior malleolar fractures (PMF) according to the fracture size is still not clear. Aim of this study was to evaluate the outcomes of the different fixation methods used for fixation of PMF by finite element analysis (FEA) and to compare the effect of fixation constructs on the size of the fracture computationally. MATERIALS AND METHODS: Three dimensional model of the tibia was reconstructed from computed tomography (CT) images...
February 20, 2017: Injury
https://www.readbyqxmd.com/read/28271932/mid-term-results-of-minimally-invasive-plate-osteosynthesis-and-circular-external-fixation-in-the-treatment-of-complex-distal-tibia-fractures
#8
Yunus Imren, Engin Eren Desteli, Mehmet Erdil, Hasan Hüseyin Ceylan, Ibrahim Tuncay, Cengiz Sen
BACKGROUND: The treatment of pilon tibia fractures is challenging. Anatomical reduction of the joint surface is essential. Excessive soft-tissue dissection may interfere with the blood supply and can result in nonunion. We sought to compare the outcomes of distal tibia fractures treated with medial locking plates versus circular external fixators. METHODS: We retrospectively evaluated 41 consecutive patients with closed pilon tibia fractures treated with either minimally invasive locking plate osteosynthesis (n = 21) or external fixation (EF) (n = 20)...
January 2017: Journal of the American Podiatric Medical Association
https://www.readbyqxmd.com/read/28268765/multiple-regression-based-imputation-for-individualizing-template-human-model-from-a-small-number-of-measured-dimensions
#9
Ryuki Nohara, Yui Endo, Akihiko Murai, Hiroshi Takemura, Makiko Kouchi, Mitsunori Tada
Individual human models are usually created by direct 3D scanning or deforming a template model according to the measured dimensions. In this paper, we propose a method to estimate all the necessary dimensions (full set) for the human model individualization from a small number of measured dimensions (subset) and human dimension database. For this purpose, we solved multiple regression equation from the dimension database given full set dimensions as the objective variable and subset dimensions as the explanatory variables...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28262467/quantitative-assessment-of-peroneal-artery-pressure-at-the-ankle-with-noninvasive-vascular-testing
#10
Whitney Ellis-McConnell, Amanda Taylor, Patrick Kelly, Andrew J Meyr
Although the foot and ankle derives its arterial supply from a combination of the anterior tibial artery (ATA), posterior tibial artery (PTA), and peroneal artery (PA), the focus of clinical examination techniques and noninvasive vascular testing is primarily on the ATA and PTA and not on the PA. The objectives of the present investigation were to evaluate the feasibility of incorporating an assessment of the PA into a noninvasive vascular testing protocol and to collect normative data of pressure measurements of the PA at the ankle...
March 2, 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/28255943/posterior-tibial-tendon-impingement-due-to-os-subtibiale-a-case-report-and-up-to-date-review
#11
Adil Turan, Ozkan Kose, Baver Acar, Melih Unal
Os subtibiale is a rare accessory ossicle located at the tip of the medial malleolus. Although this small ossicle usually has no clinical significance, in some cases it may be a source of ankle pain. Symptomatic os subtibiale is an extremely rare diagnosis, and few cases have been reported to date. The case presented is of a 35-year-old female patient with symptomatic os subtibiale, with a discussion of the diagnosis, clinical findings, and treatment options.
March 2, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28247597/-effects-of-1-8-mt-sinusoidal-alternating-electromagnetic-fields-of-different-frequencies-on-bone-biomechanics-of-young-rats
#12
Yanfeng Zhou, Yuhai Gao, Ping Zhen, Keming Chen
Objective: To study the effects of 1.8 mT sinusoidal electromagnetic fields of different frequencies on bone mineral density (BMD) and biomechanical properties in young rats. Methods: A total of 32 female SD rats (6-week-old) were randomly divided into 4 groups (8 in each):control group, 10 Hz group, 25 Hz group and 40 Hz group. The experimental groups were given 1.8 mT sinusoidal electromagnetic field intervention 90 min per day. The whole body BMD of rats was detected with dual-energy X-ray absorptiometry after 4 and 8 weeks of intervention...
November 25, 2016: Zhejiang da Xue Xue Bao. Yi Xue Ban, Journal of Zhejiang University. Medical Sciences
https://www.readbyqxmd.com/read/28226954/multiple-regression-based-imputation-for-individualizing-template-human-model-from-a-small-number-of-measured-dimensions
#13
Ryuki Nohara, Yui Endo, Akihiko Murai, Hiroshi Takemura, Makiko Kouchi, Mitsunori Tada, Ryuki Nohara, Yui Endo, Akihiko Murai, Hiroshi Takemura, Makiko Kouchi, Mitsunori Tada, Akihiko Murai, Ryuki Nohara, Hiroshi Takemura, Makiko Kouchi, Yui Endo, Mitsunori Tada
Individual human models are usually created by direct 3D scanning or deforming a template model according to the measured dimensions. In this paper, we propose a method to estimate all the necessary dimensions (full set) for the human model individualization from a small number of measured dimensions (subset) and human dimension database. For this purpose, we solved multiple regression equation from the dimension database given full set dimensions as the objective variable and subset dimensions as the explanatory variables...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28176597/the-risk-of-iatrogenic-injury-to-anterior-tibial-artery-variations-during-tibial-nail-distal-interlocking
#14
Nathan J Fanter, Sandra E Inouye, Christopher W Beiser
INTRODUCTION: Tibial intramedullary nailing remains a common tibial fracture fixation method. Tibial nailing indications continue to expand. Neurovascular complications from tibial nailing have been described; however, the proximity of distal tibial locking bolts to the anterior tibial artery (ATA) variants has not. MATERIALS AND METHODS: 52 cadaveric legs were dissected identifying three common ATA variants. Each ATA variant received an intraluminal wire to facilitate fluoroscopic identification...
January 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28169040/os-subtibiale-mimicking-medial-malleolar-fracture-a-report-of-three-cases-and-review-of-literature
#15
Murat Topal, Ahmet Köse, Recep Dinçer, Tuncay Baran, Mehmet Köse, M Çağatay Engin
There are numerous sesamoids and accessory ossicles around the foot which can easily be misdiagnosed as fractures. Os subtibiale is a very rare normal variant of the medial malleolus which is usually diagnosed incidentally in routine ankle radiographs. In this report, we present a case series of 3 patients with os subtibiale who were admitted to the emergency department with ankle sprains and misdiagnosed as medial malleolar fractures. We would like to raise awareness to the very rare and usually asymptomatic os subtibiale as a diagnostic pitfall...
December 31, 2016: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28167064/syndesmosis-stabilisation-screws-versus-flexible-fixation
#16
REVIEW
Matthew C Solan, Mark S Davies, Anthony Sakellariou
Orthopedic surgery is not short of situations where there is controversy regarding optimum management. Treating ankle syndesmosis injuries is an example where practice varies widely and there are many questions that remain unsatisfactorily answered. When addressing the type of syndesmosis stabilization that is required it is essential to ascertain the extent of instability. Only then can a logical approach to restoring the ankle mortise be achieved. Fixation of fibula shaft fractures and posterior malleolus fractures can restore sufficient stability to render syndesmosis stabilization unnecessary...
March 2017: Foot and Ankle Clinics
https://www.readbyqxmd.com/read/28167058/posterior-malleolar-fractures-changing-concepts-and-recent-developments
#17
REVIEW
Jan Bartoníček, Stefan Rammelt, Michal Tuček
Injuries to the posterior malleolus are of prognostic relevance in ankle fracture-dislocations. The three-dimensional outline of the fragments as reflected by computed tomography classification, involvement of the fibular notch, and the presence of intercalary fragments seem to be of greater therapeutic relevance than the size of the fragment and amount of the articular surface involved. Operative treatment aims at reconstruction of the posterior tibial plafond, the fibular notch, and the integrity of the posterior inferior tibiofibular syndesmosis...
March 2017: Foot and Ankle Clinics
https://www.readbyqxmd.com/read/28159037/percutaneous-screw-fixation-of-unstable-ankle-fractures-in-patients-with-poor-soft-tissues-and-significant-co-morbidities
#18
Matthew Smith, Gareth Medlock, Alan J Johnstone
INTRODUCTION: We describe a minimally invasive technique to stabilise unstable ankle fractures by inserting a 100mm screw up the fibula medullary canal along with percutaneous screw fixation of the medial malleolus if required. This technique is utilised in patients with poor soft tissues and significant co-morbidities where the fracture cannot be adequately controlled by a cast alone. PATIENTS AND METHODS: Retrospective review of 23 patients the average age being 70 years (29-89) and 74% had significant co-morbidities...
March 2017: Foot and Ankle Surgery: Official Journal of the European Society of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/28131604/os-subtibiale-and-secondary-ossification-center-of-medial-malleolus-are-two-different-entities
#19
Adil Turan, Omer Faruk Kilicaslan, Ozkan Kose
No abstract text is available yet for this article.
January 24, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28121362/anatomy-pathophysiology-and-classification-of-posterior-tibial-tendon-dysfunction
#20
M Guelfi, A Pantalone, R M Mirapeix, D Vanni, F G Usuelli, M Guelfi, V Salini
OBJECTIVE: Adult acquired flatfoot deformity is generally associated with a collapsing medial longitudinal arch and a progressive loss of strength of the posterior tibial tendon (PTT). This condition is commonly associated with PTT dysfunction or rupture, which can have an arthritic or a traumatic etiology. Several causes have been proposed to explain the clinical evidence of tendon degeneration observed at the time of surgery including trauma, anatomical, mechanical, inflammatory and ischemic factors...
January 2017: European Review for Medical and Pharmacological Sciences
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