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https://www.readbyqxmd.com/read/29784530/triplane-hallux-abducto-valgus-classification
#1
REVIEW
Daniel J Hatch, Robert D Santrock, Bret Smith, Paul Dayton, Lowell Weil
One of the most common procedures performed in the foot and ankle is correction of hallux abducto valgus deformity or "bunion surgery." Most foot and ankle surgeons recognize the challenges associated with defining each patient's individual deformity and selecting the optimal procedure for the best long-term results. Using current 2-dimensional algorithms that focus on the severity of the transverse plane deformity, surgical outcomes have varied. In the past 10 years, high recurrence and complication rates for popular procedures have been reported...
May 18, 2018: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29773337/ultrasound-of-the-distal-insertions-of-the-ankle-and-foot-tendons-with-anatomical-correlation-a-review
#2
REVIEW
Michel De Maeseneer, Hardi Madani, Leon Lenchik, Johan De Mey, Steven Provyn, Maryam Shahabpour
The distal insertions of the tendons crossing the ankle as well as the tendons originating in the foot are less well known by radiologists. We review the anatomy and ultrasound appearance of these insertions using our own cadaveric sectioning and dissection. The ultrasound images were correlated with anatomical slices. Occasionally magnetic resonance images were also used for better understanding. Understanding the normal appearance of these tendon insertions is important for diagnosing pathology in this region...
May 15, 2018: Canadian Association of Radiologists Journal, Journal L'Association Canadienne des Radiologistes
https://www.readbyqxmd.com/read/29765684/clawed-forelimbs-allow-northern-seals-to-eat-like-their-ancient-ancestors
#3
David P Hocking, Felix G Marx, Renae Sattler, Robert N Harris, Tahlia I Pollock, Karina J Sorrell, Erich M G Fitzgerald, Matthew R McCurry, Alistair R Evans
Streamlined flippers are often considered the defining feature of seals and sea lions, whose very name 'pinniped' comes from the Latin pinna and pedis , meaning 'fin-footed'. Yet not all pinniped limbs are alike. Whereas otariids (fur seals and sea lions) possess stiff streamlined forelimb flippers, phocine seals (northern true seals) have retained a webbed yet mobile paw bearing sharp claws. Here, we show that captive and wild phocines routinely use these claws to secure prey during processing, enabling seals to tear large fish by stretching them between their teeth and forelimbs...
April 2018: Royal Society Open Science
https://www.readbyqxmd.com/read/29762438/venous-anastomoses-in-anterolateral-thigh-flaps-for-the-lower-extremity-vessel-selection-in-lieu-of-obligatory-number
#4
David Mattos, Shawn Diamond, Anmol S Chattha, Johanna N Riesel, Matthew L Iorio
BACKGROUND: Dual venous drainage for anterolateral thigh flaps has been proposed to protect against flap-related complications in head and neck applications. Here we report our experience with single vs dual venous anastomosis during lower extremity free-tissue transfer. METHODS: All free anterolateral thigh flaps for lower extremity reconstruction from 2011 to 2017 were retrospectively reviewed. An algorithm was used to determine the type and number of venous anastomoses, emphasizing patient anatomy, venous quality, and size match...
May 14, 2018: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/29753997/anatomical-variation-of-the-dorsalis-pedis-artery-in-a-south-african-population-a-cadaveric-study
#5
S Ntuli, S Nalla, A Kiter
BACKGROUND: The dorsalis pedis artery is responsible for blood supply to the dorsal aspect of the foot and is vital in the clinical assessment of the arterial supply thereof. Clinical assessment should consider anatomical variations of dorsalis pedis artery. Clearly, a thorough understanding of the potential variations of the vasculature in the area is important for a precise clinical assessment of arterial supply to the foot. The aim of this study was to investigate the different branching patterns of the dorsalis pedis artery that exist in a South African population...
May 10, 2018: Foot
https://www.readbyqxmd.com/read/29753444/a-biplanar-x-ray-approach-for-studying-the-3d-dynamics-of-human-track-formation
#6
Kevin G Hatala, David A Perry, Stephen M Gatesy
Recent discoveries have made hominin tracks an increasingly prevalent component of the human fossil record, and these data have the capacity to inform long-standing debates regarding the biomechanics of hominin locomotion. However, there is currently no consensus on how to decipher biomechanical variables from hominin tracks. These debates can be linked to our generally limited understanding of the complex interactions between anatomy, motion, and substrate that give rise to track morphology. These interactions are difficult to study because direct visualization of the track formation process is impeded by foot and substrate opacity...
May 9, 2018: Journal of Human Evolution
https://www.readbyqxmd.com/read/29726781/microsurgical-anatomy-of-the-subthalamic-nucleus-correlating-fiber-dissection-results-with-3-t-magnetic-resonance-imaging-using-neuronavigation
#7
Abuzer Güngör, Şevki Serhat Baydın, Vanessa M Holanda, Erik H Middlebrooks, Cihan Isler, Bekir Tugcu, Kelly Foote, Necmettin Tanriover
OBJECTIVE Despite the extensive use of the subthalamic nucleus (STN) as a deep brain stimulation (DBS) target, unveiling the extensive functional connectivity of the nucleus, relating its structural connectivity to the stimulation-induced adverse effects, and thus optimizing the STN targeting still remain challenging. Mastering the 3D anatomy of the STN region should be the fundamental goal to achieve ideal surgical results, due to the deep-seated and obscure position of the nucleus, variable shape and relatively small size, oblique orientation, and extensive structural connectivity...
May 4, 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29723405/cystic-bone-tumors-of-the-foot-and-ankle
#8
REVIEW
Bashar Reda
Bone tumors are relatively rare in the foot and ankle region. Many of them present as cystic lesions on plain films. Due to the relative rarity of these lesions and the complex anatomy of the foot and ankle region, identification of such lesions is often delayed or they get misdiagnosed and mismanaged. This review discusses the most common cystic tumors of the foot and ankle including their radiographic features and principles of management.
May 3, 2018: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/29667031/the-prevalence-and-ossification-pattern-of-the-biphalangeal-and-triphalangeal-lateral-toes
#9
Marcin Ceynowa, Marek Rocławski, Rafał Pankowski, Tomasz Mazurek
PURPOSE: Biphalangealism of the toes is an exclusively human phenomenon. The aim of this study was to evaluate the development of the lateral toes in childhood by following the ossification pattern of the phalanges. METHODS: Foot radiographs of 913 adults have been evaluated for biphalangealism of 3rd to 5th toe. The pediatric group, aged 6-15 years of age, was assessed for the number of ossification centers in the foot. RESULTS: In adults, the mean prevalence of biphalangealism in the 5th toe was 41...
April 17, 2018: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/29537314/custom-3d-printed-total-talar-prostheses-restore-normal-joint-anatomy-throughout-the-hindfoot
#10
Joseph Tracey, Danny Arora, Christopher E Gross, Selene G Parekh
BACKGROUND: Third generation total talar prostheses (TTPs) are viable options for talar avascular necrosis (AVN) in the absence of neighboring joint pathology. The use of modern three-dimensional (3D) printing allows the production of custom implants that exactly mimic the patient's anatomy. The aim of this study is to determine the accuracy of 3D printing in reproducing a synthetic talus and, in doing so, restoring more normal anatomical relationships. We hypothesize that this mode of replication will restore and maintain normal radiographic alignment of the ankle, subtalar, and forefoot joints in the setting of talar AVN...
March 1, 2018: Foot & Ankle Specialist
https://www.readbyqxmd.com/read/29500895/determination-and-classification-of-cutaneous-innervation-of-dorsum-of-the-foot-in-fetal-cadavers
#11
Busra Candan, Soner Albay
BACKGROUND: The aim of this study is to determine of cutaneous innervation of dorsum of the foot on fetal cadavers. MATERIALS AND METHODS: In this study 200 limbs from 100 embalmed fetuses (54 males and 46 females) were studied in Anatomy Laboratory. Contributions of medial, lateral and intermediate dorsal cutaneous nerves (MDCN, LDCN and IDCN) of the foot were identified. FINDINGS: Cutaneous innervation of dorsum of the foot was classified into five Types...
March 3, 2018: Folia Morphologica (Warsz)
https://www.readbyqxmd.com/read/29492589/-foot-and-ankle-tumours-part-ii-malignant-bone-tumours-and-soft-tissue-tumours-of-the-foot-with-differential-diagnostic-hints
#12
REVIEW
T Grieser
CLINICAL ISSUE: Both benign and malignant tumours are encountered in the foot and ankle. Due to their rarity, however, diagnosis is often uncertain. Usual criteria such as tumour size, invasiveness or pain fail to differentiate benign from malignant neoplasias. STANDARD RADIOLOGICAL METHODS: Plain radiography and-due to the complex foot anatomy-CT are important in the diagnostic evaluation of primary bone tumours. In the case of soft tissue tumours, ultrasonography is used to identify ganglion cysts...
May 2018: Der Radiologe
https://www.readbyqxmd.com/read/29409257/anatomy-of-the-tibial-incisura-as-a-risk-factor-for-syndesmotic-injury
#13
Andrzej Boszczyk, Sławomir Kwapisz, Martin Krümmel, Rene Grass, Stefan Rammelt
BACKGROUND: The study aims at comparing the bony anatomy of the syndesmosis in patients who sustained a high fibular fracture with syndesmosis disruption and that of the non-injured population. We hypothesised that there are certain anatomical features making the syndesmosis susceptible to injury. METHODS: The CT examinations of 75 patients who sustained a high fibular fracture with syndesmosis disruption and control group of 75 patients with unrelated foot problems were compared...
August 16, 2017: Foot and Ankle Surgery: Official Journal of the European Society of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29373047/the-study-of-surface-electromyography-used-for-the-assessment-of-abductor-hallucis-muscle-activity-in-patients-with-hallux-valgus
#14
Kamila Mortka, Przemysław Lisiński, Agnieszka Wiertel-Krawczuk
BACKGROUND: Hallux valgus is a common foot disorder. In patients with hallux valgus, the anatomy and biomechanics of foot is subject to alterations. OBJECTIVE: The aim of this clinical and neurophysiological study is to compare the activity of abductor hallucis (AbdH) muscle between the group of patients with hallux valgus and control group of healthy people, with the use of surface electromyography. METHODS: The study involved 44 feet with diagnosed hallux valgus (research group) and 42 feet without deformation (control group)...
January 26, 2018: Physiotherapy Theory and Practice
https://www.readbyqxmd.com/read/29362034/gastrocnemius-recession-for-metatarsalgia
#15
REVIEW
Rose E Cortina, Brandon L Morris, Bryan G Vopat
Metatarsalgia is a common cause of plantar forefoot pain. Causes of metatarsalgia include foot anatomy, gait mechanics, and foot and ankle deformity. One specific cause, mechanical metatarsalgia, occurs because of gastrocnemius muscle contracture, which overloads the forefoot. Muscular imbalance of the gastrocnemius complex alters gait mechanics, which increases recruitment of the toe extensor musculature, thereby altering forefoot pressure. Patients with concomitant metatarsalgia and gastrocnemius contracture demonstrate ankle equinus and a positive Silfverskiold test...
March 2018: Foot and Ankle Clinics
https://www.readbyqxmd.com/read/29357996/peroneus-brevis-tendon-in-proximal-5th-metatarsal-fractures-anatomical-considerations-for-safe-hook-plate-placement
#16
N Seyidova, L Hirtler, R Windhager, R Schuh, M Willegger
INTRODUCTION: The peroneus brevis tendon (PBT) inserts into the proximal aspect of the 5th metatarsal. Metatarsal bone fractures are encountered to be the most common fractures in the foot with predominantly fractures at the base of the fifth metatarsal bone. Mechanism of injury and treatment of the proximal 5th metatarsal fractures vary due to the complex anatomy and diverse biomechanical properties. The purpose of this study was to analyze the footprint of the PBT with regards to the proximal 5th metatarsal fractures and to define a "safe zone" for hook plate placement...
March 2018: Injury
https://www.readbyqxmd.com/read/29347832/wire-placement-in-the-sustentaculum-tali-using-a-2d-projection-based-software-application-for-mobile-c-arms-cadaveric-study
#17
Benedict Swartman, Dirk Frere, Wei Wei, Marc Schnetzke, Stephan Grechenig, Amir Matityahu, Nils Beisemann, Holger Keil, Jochen Franke, Paul Alfred Grützner, Sven Yves Vetter
BACKGROUND: Indirect screw fixation of the sustentaculum tali in the lateral-medial direction can be challenging due to the complex calcaneal anatomy. A novel 2-dimensional (2D) projection-based software application detects Kirschner wires (K-wires) and visualizes their intended direction as a colored trajectory. The aim of this prospectively randomized cadaver study was to investigate whether the software would facilitate the indirect K-wire placement in the sustentaculum tali. METHODS: In 20 cadaver foot specimens, K-wires were placed indirectly in the sustentaculum tali by an experienced and an inexperienced surgeon, with and without using the application...
April 2018: Foot & Ankle International
https://www.readbyqxmd.com/read/29346148/vertical-profunda-artery-perforator-flap-for-plantar-foot-wound-closure-a-new-application
#18
Allyson R Alfonso, James L Mayo, Vishal K Sharma, Robert J Allen, Ernest S Chiu
BACKGROUND: Plantar foot reconstruction requires special consideration of both form and function. There are several fasciocutaneous flap options, each with indications and reservations. CASE STUDY: This case presents a new application of the vertical profunda artery perforator flap for definitive closure of a neuropathic foot ulcer in a young woman with spina bifida. The postoperative course was uneventful, and the flap survived completely. The surgical and donor sites were without wound recurrence at 5-month follow-up...
February 2018: Advances in Skin & Wound Care
https://www.readbyqxmd.com/read/29278836/the-fibularis-digiti-quinti-tendon-a-cadaveric-study-with-anthropological-and-clinical-considerations
#19
Morgan E Chaney, Tung V Dao, Benjamin S Brechtel, Stephanie J Belovich, Kathy J Siesel, John R Fredieu
In addition to the fibularis longus and brevis muscles, a number of anomalous muscles or tendons can arise from the lateral compartment of the leg. The authors describe a bilateral and robust fibularis digiti quinti (FDQ) tendon present in the foot of a 99-year-old female cadaver, present the incidence of this tendon in a cohort of 26 cadavers dissected by podiatric-medical students for a lower-extremity anatomy course, and discuss the anthropological and clinical significance of the findings. In these specimen, the FDQ tendon arose from the fibularis brevis tendon proximal to the lateral malleolus, but did not separate completely from the fibularis brevis tendon until passing through the inferior fibular retinaculum...
December 5, 2017: Foot
https://www.readbyqxmd.com/read/29275904/the-achilles-tendon-in-healthy-subjects-an-anthropometric-and-ultrasound-mapping-study
#20
Nick N Patel, Sameh A Labib
Ultrasonography is an inexpensive, fast, and reliable imaging technique widely used to assess the Achilles tendon. Although significant data exists regarding pathologic tendon changes, ultrasound data from healthy individuals are more limited. We aimed to better characterize ultrasound Achilles tendon measurements in healthy individuals and identify important correlating factors. The information collected included patient demographics, body habitus, activity level, foot dominance, and resting ankle angle. Ultrasound analysis was performed bilaterally on the Achilles tendons of 50 subjects using a high-frequency transducer to measure tendon width, thickness, cross-sectional area, and length...
March 2018: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
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