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Medial longitudinal arch

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https://www.readbyqxmd.com/read/28419877/effect-of-foot-orthoses-on-the-medial-longitudinal-arch-in-children-with-flexible-flatfoot-deformity-a-three-dimensional-moment-analysis
#1
Amir Ali Jafarnezhadgero, Morteza Madadi Shad, Mahdi Majlesi
Foot orthoses are often used to correct altered gait patterns. The purpose of this study was to investigate how foot orthoses can modify the magnitude of three dimensional moments of ankle, knee, and hip joints during a stride of gait in children with flexible flat feet. Bilateral gait data were collected from fourteen male children (age 10.2±1.4 years) suffering from flat feet syndrome. In order to obtain the kinematics data, a Vicon system with six cameras (100Hz) was used and two Kistler force plates (1000Hz) to record the kinetics data under each leg...
April 7, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28390446/genetic-influence-on-accessory-navicular-bone-in-the-foot-a-korean-twin-and-family-study
#2
In Yae Cheong, Hyo Jeong Kang, Hyeonyoung Ko, Joohon Sung, Yun-Mi Song, Ji Hye Hwang
An accessory navicular bone (AN) is the most common accessory ossicle in the foot. The presence of an AN bone can trigger various foot problems, such as posterior tibial tendon pathology, flattening of the medial longitudinal arch, and medial foot pain. Despite the clinical influence of presence of an AN in foot disease, the research regarding its inheritance is still insufficient. A total of 135 pairs of monozygotic (MZ) twins, 25 pairs of dizygotic (DZ) twins, and 676 singletons from families were enrolled in order to estimate genetic influences on AN...
April 9, 2017: Twin Research and Human Genetics: the Official Journal of the International Society for Twin Studies
https://www.readbyqxmd.com/read/28242568/the-mechanism-of-force-transference-in-feet-of-children-ages-two-to-six
#3
Mingyu Hu, Nan Zhou, Bo Xu, Wuyong Chen, Jianxin Wu, Jin Zhou
The aim of this study was to design an algorithm to quantify the plantar force transference of children from ages 2-6. In total, 319 healthy children without abnormal gait patterns, foot deformities or injuries, able to walk independently, and with normal BMIs were recruited, and their plantar force distributions were measured. Their plantar areas were divided into ten parts: the hallux, toes #2-5, the first to fifth metatarsal heads (1st-5th MTH), the mid-foot (MF), medial heel (MH) and lateral heel (LH), in which a relative force-time integral (FTIrel) (%) was calculated...
February 22, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28121362/anatomy-pathophysiology-and-classification-of-posterior-tibial-tendon-dysfunction
#4
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
https://www.readbyqxmd.com/read/28058661/an-old-mismanaged-lisfranc-injury-treated-by-gradual-deformity-correction-followed-by-the-second-stage-internal-fixation
#5
Mehraj D Tantray, Khurshid Kangoo, Asif Nazir, Muzamil Baba, Raja Rameez, Syed Tabish, Syed Shahnawaz
The Lisfranc fracture-dislocation of the foot is uncommon and diagnosis is often missed. The Lisfranc joint involves the articulation between medial cuneiform and base of the second metatarsal and is considered a keystone to structural integrity to the midfoot. The articulation has a stabilization effect on longitudinal and transverse arches of the foot. A neglected or untreated injury to the Lisfranc joint can lead to secondary arthritis and significant morbidity and disability. We present a case of a neglected Lisfranc fracture-dislocation in a 28-year-old female patient who presented 3 months after injury...
April 2017: Strategies in Trauma and Limb Reconstruction
https://www.readbyqxmd.com/read/28017708/comparison-of-morphology-between-patients-with-and-without-developmental-spinal-canal-stenosis-to-inform-the-feasibility-of-c1%C3%A2-lateral-mass-screw-insertion-in-the-atlas
#6
Naoki Notani, Masashi Miyazaki, Shozo Kanezaki, Toshinobu Ishihara, Masanori Kawano, Hiroshi Tsumura
BACKGROUND: C1 lateral mass screws are increasingly being used as an effective anchoring system. Insufficient posterior arch height increases difficulty of inserting the screws using the Tan method. The general aim of our retrospective cross-sectional study was to clarify the atlas morphology of patients with developmental spinal canal stenosis to evaluate the usefulness of the Tan method. METHODS: A computed tomography myelogram was performed in 85 Japanese patients presenting with spinal disorders...
December 23, 2016: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/27942135/the-effects-of-short-foot-exercises-and-arch-support-insoles-on-improvement-in-the-medial-longitudinal-arch-and-dynamic-balance-of-flexible-flatfoot-patients
#7
Eun-Kyung Kim, Jin Seop Kim
[Purpose] The purpose of the present study is to apply short foot exercises and arch support insoles in order to improve the medial longitudinal arch of flatfoot and compare the results to identify the effects of the foregoing exercises on the dynamic balance of the feet and the lower limbs. [Subjects and Methods] Fourteen university students with flexible flatfoot were selected by conducting navicular drop tests and randomly assigned to a short foot exercise group of seven subjects and an arch support insoles group of seven subjects...
November 2016: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/27915133/novel-reconstruction-technique-for-an-isolated-plantar-calcaneonavicular-spring-ligament-tear-a-5-case-series-report
#8
Ezequiel Palmanovich, Shay Shabat, Yaron S Brin, Sabri Massrawe, Iftach Hestroni, Meir Nyska
BACKGROUND: It is usually accepted that acquired flatfoot deformity after injury is usually due to partial or complete tear of the posterior tibial tendon (PTT), with secondary failure of the other structures which maintain the medial longitudinal arch, such as the plantar calcaneo-navicular (SPRING) ligament. It is unusual to find an isolated Spring Ligament (SL) tear, with an intact TP tendon. METHODS: The medial arch reconstruction technique of an isolated SL tear in 5 patients is presented discussed in this paper...
March 2017: Foot
https://www.readbyqxmd.com/read/27890134/the-relationship-between-arch-height-and-foot-length-implications-for-size-grading
#9
Matthew Hill, Roozbeh Naemi, Helen Branthwaite, Nachiappan Chockalingam
OBJECTIVE: Medial longitudinal Arch Height is synonymous with classifying foot type and conversely foot function. Detailed knowledge of foot anthropometry is essential in the development of ergonomically sound footwear. Current Footwear design incorporates a direct proportionate scaling of instep dimensions with those of foot length. The objective of this paper is to investigate if a direct proportional relationship exists between human arch height parameters and foot length in subjects with normal foot posture...
March 2017: Applied Ergonomics
https://www.readbyqxmd.com/read/27858680/comparing-the-efficacy-of-exercise-internal-and-external-shoe-modification-in-pes-planus-a-clinical-and-pedobarographic-study
#10
Ozgur Taspinar, Derya Demirbag Kabayel, Ferda Ozdemir, Hakan Tuna, Yasar Keskin, Oznur Berke Mercimek, Necdet Süt, Selcuk Yavuz, Filiz Tuna
Pes planus is a condition that can cause pain along the innerfoot due to the absence or abnormal depression of the longitudinal arch. There are few studies available that compare therapy modalities used in these patients. In our study, those treated with conservative therapies - internal and external shoe modifications and pes planus exercises - were compared clinically and pedobarographyically. 60 pes planus patients were included in the study. In the first group; internal modification was performed by placing a medial longitudinal arch support inside the shoe...
2017: Journal of Back and Musculoskeletal Rehabilitation
https://www.readbyqxmd.com/read/27776669/spring-ligament-complex-illustrated-normal-anatomy-and-spectrum-of-pathologies-on-3t-mr-imaging
#11
REVIEW
Hythem Omar, Vikram Saini, Vibhor Wadhwa, George Liu, Avneesh Chhabra
The spring (plantar calcaneonavicular) ligament complex connects the calcaneus and navicular bone of the foot and serves as the primary static stabilizer of the medial longitudinal arch of the foot. In this article, we describe the normal anatomy of the spring ligament complex, illustrate 3T magnetic resonance imaging appearances in its normal and abnormal states, and discuss the pathological associations with relevant case examples.
November 2016: European Journal of Radiology
https://www.readbyqxmd.com/read/27762613/effect-of-vibram-fivefingers-minimalist-shoes-on-the-abductor-hallucis-muscle
#12
Nicholas A Campitelli, Scott A Spencer, Kaitlyn Bernhard, Kristen Heard, Alan Kidon
BACKGROUND: This study investigated the effect of Vibram FiveFingers Bikila minimalist shoes on intrinsic foot musculature. We hypothesized that a gradual transition into minimalist shoes will increase the thickness of the abductor hallucis muscle. METHODS: Forty-one individuals were divided into four groups: control (traditional shod) (n = 9), restricted walking in Vibram FiveFingers (n = 11), running in Vibram FiveFingers (n = 10), and unlimited walking in Vibram FiveFingers (n = 11)...
September 2, 2016: Journal of the American Podiatric Medical Association
https://www.readbyqxmd.com/read/27736722/the-use-of-a-static-measure-to-predict-foot-posture-at-midstance-during-walking
#13
Thomas G McPoil, Jessica Ford, Joel Fundaun, Chelsea Gallegos, Andrew Kinney, Peter McMillan, Jessica Murphy, Elliot Sky, Derrick Torba, Michael Bade
Previous studies have successfully used the longitudinal arch angle (LAA) to assess foot posture, but the measurement consistency and ability of the LAA to predict dynamic foot posture during activity in a variety of foot types have not been evaluated. The purpose of this study was to determine the reliability of the LAA as well as if the clinical method of assessing the LAA could be used to predict the LAA at midstance during walking for supinated, normal, and pronated foot types. The Arch Height Ratio was used to select 35 participants with 12 supinated, 46 normal, and 12 pronated feet...
August 2016: Foot
https://www.readbyqxmd.com/read/27690528/intrinsic-foot-muscle-activation-during-specific-exercises-a-t2-time-magnetic-resonance-imaging-study
#14
Thomas M Gooding, Mark A Feger, Joseph M Hart, Jay Hertel
CONTEXT: The intrinsic foot muscles maintain the medial longitudinal arch and aid in force distribution and postural control during gait. Impaired intrinsic foot-muscle function has been linked to various foot conditions. Several rehabilitative exercises have been proposed to improve it; however, literature that identifies which individual muscles are activated during specific intrinsic foot-muscle exercises is lacking. OBJECTIVE: To describe changes in activation of the intrinsic plantar foot muscles after 4 exercises as measured with T2 magnetic resonance imaging (MRI)...
August 2016: Journal of Athletic Training
https://www.readbyqxmd.com/read/27613812/effectiveness-of-percutaneous-proximal-closing-wedge-osteotomy-with-akin-osteotomy-to-correct-severe-hallux-valgus-determined-by-radiographic-parameters
#15
Toshinori Kurashige, Seiichi Suzuki
Some authors reported the results from percutaneous distal metatarsal osteotomy for hallux valgus recently. On the other hand, there are few reports of percutaneous proximal metatarsal osteotomy. The purpose of the present study was to evaluate the radiographic results of percutaneous proximal closing wedge osteotomy with Akin osteotomy for correction of severe hallux valgus and increasing longitudinal arch height. Consecutive 17 feet (mean age = 70.8 years) were investigated. The mean follow-up was 22 months...
April 2017: Foot & Ankle Specialist
https://www.readbyqxmd.com/read/27586152/effects-of-incremental-ambulatory-range-loading-on-arch-height-index-parameters
#16
Anastasia Bjelopetrovich, Joaquin A Barrios
Deformation of the medial longitudinal arch under body weight loading is often assessed using the Arch Height Index Measurement System. This system assesses change in arch height between sitting and standing, estimated to be 10% and 50% of body weight, respectively. However, body weight forces during ambulation exceed these loads, therefore limiting our understanding of arch deformation under ambulatory load ranges. Thus, the study aims were (1) to assess if sitting and standing arch height differed from that seen under 10% and 50% body weight using a force target-matching procedure, and (2) to quantify the assumed linearity of arch stiffness, measured statically, throughout an ambulatory load range...
October 3, 2016: Journal of Biomechanics
https://www.readbyqxmd.com/read/27571325/development-of-the-epaxial-muscles-in-the-human-embryo
#17
Hayelom K Mekonen, Jill P J M Hikspoors, Greet Mommen, S Eleonore KÖhler, Wouter H Lamers
Although the intrinsic muscles of the back are defined by their embryological origin and innervation pattern, no detailed study on their development is available. Human embryos (5-10 weeks development) were studied, using Amira3D® reconstruction and Cinema4D® remodeling software for visualization. At Carnegie Stage (CS)15, the epaxial portions of the myotomes became identifiable laterally to the developing vertebrae. At CS16, these portions fused starting cranially to form a longitudinal muscle column, which became innervated by the dorsal branches of the spinal nerves...
November 2016: Clinical Anatomy
https://www.readbyqxmd.com/read/27548905/medial-longitudinal-arch-angle-presents-significant-differences-between-foot-types-a-biplane-fluoroscopy-study
#18
Megan E R Balsdon, Kristen M Bushey, Colin E Dombroski, Marie-Eve LeBel, Thomas R Jenkyn
The structure of the medial longitudinal arch (MLA) affects the foot's overall function and its ability to dissipate plantar pressure forces. Previous research on the MLA includes measuring the calcaneal-first metatarsal angle using a static sagittal plane radiograph, a dynamic height-to-length ratio using marker clusters with a multisegment foot model, and a contained angle using single point markers with a multisegment foot model. The objective of this study was to use biplane fluoroscopy to measure a contained MLA angle between foot types: pes planus (low arch), pes cavus (high arch), and normal arch...
October 1, 2016: Journal of Biomechanical Engineering
https://www.readbyqxmd.com/read/27477708/effects-of-running-induced-fatigue-on-plantar-pressure-distribution-in-novice-runners-with-different-foot-types
#19
Mehrdad Anbarian, Hamed Esmaeili
This study aimed to assess the effects of running-induced fatigue on plantar pressure parameters in novice runners with low and high medial longitudinal arch. Plantar pressure data from 42 novice runners (21 with high, and 21 with low arch) were collected before and after running-induced fatigue protocol during running at 3.3m/s along the Footscan(®) platform. Peak plantar pressure, peak force and force-time integral (impulse) were measured in ten anatomical zones. Relative time for foot roll-over phases and medio-lateral force ratio were calculated before and after the fatigue protocol...
July 2016: Gait & Posture
https://www.readbyqxmd.com/read/27427138/effects-of-ballet-training-of-children-in-turkey-on-foot-anthropometric-measurements-and-medial-longitudinal-arc-development
#20
Sevgi Anar Ozdinc, Fatma Nesrin Turan
OBJECTIVE: To investigate the effects of ballet training on foot structure and the formation of the medial longitudinal arc in childhood, and the association of body mass index with structural change secondary to ballet training. METHODS: This study was conducted at Öykü Ballet and Dance School and Trakya University, Edirne, Turkey, from September 2007 to November 2008, and comprised girl students who were taking ballet classes, and a group of those who were not taking such who acted as the controls...
July 2016: JPMA. the Journal of the Pakistan Medical Association
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