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Medial longitudinal arch

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https://www.readbyqxmd.com/read/29765178/gender-difference-in-factors-affecting-the-medial-longitudinal-arch-height-of-the-foot-in-healthy-young-adults
#1
Katsuhito Nagano, Risako Okuyama, Natsuki Taniguchi, Tomoki Yoshida
[Purpose] Medial longitudinal arch (MLA) height is associated with various injuries and diseases and gender differences, if any. This study aimed to examine factors affecting the MLA height associated with gender differences in healthy subjects with no orthopedic disorders. [Subjects and Methods] This study included 36 healthy adults (19 males, 17 females; mean age, 21.8 ± 3.6 years; body mass index, 21.1 ± 2.0 kg/m2 ). Their height, body weight, foot length, muscle strength of the tibialis posterior muscle (TPM), toe-gripping strength, hallux valgus angle, inversion microdactylia angle, angle of leg-heel alignment, femoro-tibial angle, and navicular height were measured...
May 2018: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/29753444/a-biplanar-x-ray-approach-for-studying-the-3d-dynamics-of-human-track-formation
#2
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/29709300/foot-longitudinal-arches-in-obese-overweight-and-normal-weight-females-who-differ-in-age
#3
Agnieszka Jankowicz-Szymańska, Katarzyna Wódka, Małgorzata Kołpa, Edyta Mikołajczyk
Nowadays, excessive body weight is the cause of death of more people than malnutrition. Obesity is a growing health problem worldwide, which also results in a considerable number of movement dysfunctions, including degenerative changes and foot pain. The study aimed to assess the effect of overweight and obesity on the height of foot arches in females aged 10-84 years, as well as to establish which factor - age or BMI - affected the height of medial longitudinal arch (MLA) to a greater extent. Three groups of females (96 pupils, 86 young adults and 88 seniors) were selected to participate in the study...
March 27, 2018: Homo: Internationale Zeitschrift Für die Vergleichende Forschung Am Menschen
https://www.readbyqxmd.com/read/29673934/foot-structure-and-knee-joint-kinetics-during-walking-with-and-without-wedged-footwear-insoles
#4
Ryan T Lewinson, Ryan Madden, Anthony Killick, John W Wannop, J Preston Wiley, Victor M Y Lun, Chirag Patel, Jeremy M LaMothe, Darren J Stefanyshyn
The relationship between static foot structure characteristics and knee joint biomechanics during walking, or the biomechanical response to wedged insoles are currently unknown. In this study, 3D foot scanning, dual X-ray absorptiometry and gait analysis methods were used to determine structural parameters of the foot and assess their relation to knee joint loading and biomechanical response to wedged insoles in 30 patients with knee osteoarthritis. In multiple linear regression models, foot fat content, height of the medial longitudinal arch and static hind foot angle were not associated with the magnitude of the knee adduction moment (R2  = 0...
April 12, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/29658814/combined-spring-and-deltoid-ligament-repair-in-adult-acquired-flatfoot
#5
Caio Nery, André Vitor Kerber C Lemos, Fernando Raduan, Nacime Salomão B Mansur, Daniel Baumfeld
BACKGROUND: Adult-acquired flatfoot deformity (AAFD) is usually due to a combination of mechanical failure of the osteoligamentous complex that maintains the medial longitudinal arch of the foot and attenuation or complete tear of the posterior tibial tendon. Magnetic resonance imaging studies in patients with flatfoot deformities have reported the posterior tibial tendon to be pathologic in up to 100% of patients, the spring ligament in up to 87%, and the deltoid ligament in 33%. Many studies in the literature describe reconstruction of the spring ligament or the deltoid ligament associated with AAFD, but there is no study in which both (spring and deltoid) ligaments are reconstructed at the same time...
April 1, 2018: Foot & Ankle International
https://www.readbyqxmd.com/read/29619845/contribution-of-medial-cuneiform-osteotomy-to-correction-of-longitudinal-arch-collapse-in-stage-iib-adult-acquired-flatfoot-deformity
#6
Grace C Kunas, Huong T Do, Amiethab Aiyer, Jonathan T Deland, Scott J Ellis
Background Residual forefoot supination after correcting the hindfoot in stage IIb adult-acquired flatfoot deformity can be addressed with a dorsal opening wedge medial cuneiform (Cotton) osteotomy. The amount of correction is generally judged clinically, and there currently are no preoperative guides that can predict the size of graft needed. The aim of this study was to evaluate the correlation between patient and operative factors and the correction achieved with the Cotton osteotomy. METHODS: Seventy-nine feet in 74 patients undergoing Cotton osteotomy as part of flatfoot reconstruction were reviewed retrospectively...
April 1, 2018: Foot & Ankle International
https://www.readbyqxmd.com/read/29573666/foot-posture-is-associated-with-plantar-pressure-during-gait-a-comparison-of-normal-planus-and-cavus-feet
#7
Andrew K Buldt, Saeed Forghany, Karl B Landorf, Pazit Levinger, George S Murley, Hylton B Menz
BACKGROUND: Variations in foot posture, such as pes planus (low medial longitudinal arch) or pes cavus (high medial longitudinal arch) are associated with some lower limb injuries. However, the mechanism that links foot posture to injury is not clear. Research question The aim of this study was to compare plantar pressure between healthy individuals with normal, planus or cavus feet. METHODS: Ninety-two healthy volunteers (aged 18 to 45) were classified as either normal (n = 35), pes planus (n = 31) or pes cavus (n = 26) based on the Foot Posture Index, Arch Index and normalised navicular height truncated...
March 5, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29547032/characteristics-of-plantar-pressures-and-related-pain-profiles-in-elite-sprinters-and-recreational-runners
#8
Tong-Hsien Chow, Yih-Shyuan Chen, Jia-Chang Wang
BACKGROUND: Plantar pressure measurement is effective for assessing plantar loading and can be applied to evaluating foot performance. We sought to explore the characteristics of plantar pressures in elite sprinters and recreational runners during static standing and walking. METHODS: Arch index (AI) values, regional plantar pressure distributions (PPDs), and footprint characteristics were examined in 80 elite sprinters and 90 recreational runners using an optical plantar pressure measurement system...
January 2018: Journal of the American Podiatric Medical Association
https://www.readbyqxmd.com/read/29482786/surgical-management-navicular-and-cuboid-fractures
#9
REVIEW
J Randolph Clements, François Dijour, Wesley Leong
The tarsal navicular is a critical component of the foot's medial longitudinal arch. Injuries to the navicular have significant long-term functional consequences. In addition to stress fractures, acute injuries to the navicular include acute avulsion, tuberosity, and body fractures. Nonoperative treatment is the mainstay for avulsion injuries and nondisplaced body fractures. Open reduction and internal fixation is performed to achieve anatomic reduction in the other situations. Common complications following operative intervention include pain, stiffness, post-traumatic arthritis, avascular necrosis, nonunion, and hindfoot deformity...
April 2018: Clinics in Podiatric Medicine and Surgery
https://www.readbyqxmd.com/read/29327550/-study-on-the-correlative-factors-of-the-pain-under-the-second-metatarsal-in-patients-with-hallux-valgus
#10
Jian-Gang Zuo, Hai-Wei Hu, Zhi-Cheng Sang, Jian-Min Wen, Wei-Dong Sun, Yong-Sheng Sun, Ting Cheng
OBJECTIVE: To analyze the correlation between the hallux valgus angle and arch X-ray parameters change, plantar pressure by measuring the X-ray indexes and foot-pressure indexes in patients with hallux valgus, as well as to study the main cause factors for the pain under the second metatarsal head. METHODS: A retrospective study of 254 patients(477 feet) treated in Wangjing Hospital from January 2012 to June 2013 was performed. The pain under the second metatarsal head and age distribution were recorded...
January 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29284231/assessment-of-the-influence-of-jogging-on-the-shape-of-female-foot-arches
#11
Agata Maslon, Joanna Golec, Elzbieta Szczygiel, Dorota Czechowska, Boguslaw Golec
INTRODUCTION: Both walking and its faster, running, consist of cyclical subsequent phases of swing and support; however, they differ in their time proportions as well as magnitude of acting forces. There is a lack of studies concerning the long-term consequences of repeated jogging cycles on the function of feet and, above all, on their permanent impact on the shape of foot arches. OBJECTIVES: The objective of this study was to answer the question whether regular jogging changes the shape of the transverse and medial longitudinal arches of the feet...
December 23, 2017: Annals of Agricultural and Environmental Medicine: AAEM
https://www.readbyqxmd.com/read/29214919/effect-of-total-contact-orthosis-on-medial-longitudinal-arch-and-lower-extremities-in-flexible-flatfoot-subjects-during-walking
#12
Tulaya Prachgosin, Wipawan Leelasamran, Pruittikorn Smithmaitrie, Surapong Chatpun
BACKGROUND: Total-contact orthosis (TCO) is one kind of foot orthosis (FO) that is used to adjust biomechanics in flexible flatfoot. OBJECTIVE: To determine the effects of a TCO on the MLA moment, MLA deformation angle and lower limb biomechanics. STUDY DESIGN: Cross-sectional study. METHODS: Seven-flatfoot and thirteen-normal foot subjects were recruited by footprint and radiographs. The biomechanics of subjects with normal foot (NF), flatfoot with shoe only (FWOT) and flatfoot with TCO (FWT) were collected in a 3D motion analysis laboratory and force plates...
December 2017: Prosthetics and Orthotics International
https://www.readbyqxmd.com/read/29202983/influence-of-tibialis-posterior-muscle-activation-on-foot-anatomy-under-axial-loading-a-biomechanical-ct-human-cadaveric-study
#13
Koen Dullaert, Jennifer E Hagen, Paul Simons, Florian Gras, Boyko Gueorguiev, R Geoff Richards, Kajetan Klos
BACKGROUND: Collapse of the medial longitudinal arch and subluxation of the subtalar joint are common occurrences in adult flatfoot deformity. Controversy exists about the role of the tibialis posterior (TP) tendon as first and/or essential lesion. Subtle changes in the foot configuration can occur under weight bearing. PURPOSE: This human cadaveric study is designed to investigate the effect that isolated actuation of the TP tendon has on the medial longitudinal arch and the hindfoot configuration under simulated weight bearing...
December 2017: Foot and Ankle Surgery: Official Journal of the European Society of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29201146/time-to-revise-our-dialogue-how-flat-is-the-paediatric-flatfoot
#14
COMPARATIVE STUDY
Stewart C Morrison, Juliet McClymont, Carina Price, Chris Nester
A recent systematic review of measures of foot development used the medial longitudinal arch profile as its primary indicator of development. A comparative analysis of existing studies was undertaken. This work confirmed changes with arch profile were age-dependent, although the age at which foot development ceased remains unknown. This work also highlighted the abundance of clinical measures used in existing research and outlined the challenges with drawing consensus from available data. There is a clear need to move this debate forward and, to do so, it is essential that scientific and clinical communities unite...
2017: Journal of Foot and Ankle Research
https://www.readbyqxmd.com/read/29182114/assessment-of-the-medial-longitudinal-arch-in-children-with-flexible-pes-planus-by-plantar-pressure-mapping
#15
E M Elmoatasem, M A Eid
INTRODUCTION: Plantar Pressure mapping was introduced as a new modality for assessment of the height of the medial longitudinal arch of the foot. Therefore, the aim of this study is to correlate the plantar pressure mapping readings of arch index contact force ratio (AICFR) in children with flexible pes planus with radiographic measurements and static plantar footprints in order to determine the reliability of pressure mapping as a modality for the assessment and follow up of the flat foot deformity...
December 2016: Acta Orthopaedica Belgica
https://www.readbyqxmd.com/read/29175714/the-effect-of-additional-activation-of-the-plantar-intrinsic-foot-muscles-on-foot-dynamics-during-gait
#16
Kazunori Okamura, Shusaku Kanai, Masaki Hasegawa, Akira Otsuka, Sadaaki Oki
BACKGROUND: The plantar intrinsic foot muscles (PIFMs) contribute to support the medial longitudinal arch. But the functional role of the PIFMs during dynamic activities is not clear. The purpose of this study was to examine the change in the foot dynamics during gait accompanied with the change in the PIFMs activity to determine the functional role of the PIFMs during gait. METHODS: Twenty healthy male subjects were randomly assigned to the electrical stimulation group (ESG) or control group (CG)...
August 18, 2017: Foot
https://www.readbyqxmd.com/read/29144991/finite-element-simulation-on-posterior-tibial-tendinopathy-load-transfer-alteration-and-implications-to-the-onset-of-pes-planus
#17
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...
January 2018: Clinical Biomechanics
https://www.readbyqxmd.com/read/29134100/three-dimensional-innate-mobility-of-the-human-foot-bones-under-axial-loading-using-biplane-x-ray-fluoroscopy
#18
Kohta Ito, Koh Hosoda, Masahiro Shimizu, Shuhei Ikemoto, Takeo Nagura, Hiroyuki Seki, Masateru Kitashiro, Nobuaki Imanishi, Sadakazu Aiso, Masahiro Jinzaki, Naomichi Ogihara
The anatomical design of the human foot is considered to facilitate generation of bipedal walking. However, how the morphology and structure of the human foot actually contribute to generation of bipedal walking remains unclear. In the present study, we investigated the three-dimensional kinematics of the foot bones under a weight-bearing condition using cadaver specimens, to characterize the innate mobility of the human foot inherently prescribed in its morphology and structure. Five cadaver feet were axially loaded up to 588 N (60 kgf), and radiographic images were captured using a biplane X-ray fluoroscopy system...
October 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/29028624/foot-pressure-pattern-hindfoot-deformities-and-their-associations-with-foot-pain-in-individuals-with-advanced-medial-knee-osteoarthritis
#19
Isao Saito, Kyoji Okada, Masahiko Wakasa, Hidekazu Abe, Akira Saito
This survey clarified foot pressure patterns and hindfoot deformities in individuals with advanced knee osteoarthritis (OA) and analyzed their associations with foot pain. Sixty-four individuals with unilateral knee OA who underwent total knee arthroplasty (TKA) were divided into the following groups: no foot pain (n=26; men:women, 4:22; mean age, 73.7 years), foot pain resolved after TKA (12; 2:10; 75.8), and foot pain remaining after TKA (26; 4:22; 74.7). Elderly individuals without pain or deformity in either knee (54; 10:44; 74...
January 2018: Gait & Posture
https://www.readbyqxmd.com/read/28871902/height-of-the-medial-longitudinal-arch-during-classical-ballet-steps
#20
Carolina Cabral de Mello Viero, Luíza Pillar Kessler, Camila Pinto, Kaanda Nabilla Souza Gontijo, Rodrigo Gomes da Rosa, Ana Kleiner, Leonardo Alexandre Peyré-Tartaruga, Alexandre Severo do Pinho, Aline de Souza Pagnussat
The purpose of this study was to evaluate the midfoot longitudinal arch height and correlate it with active hip external rotation (ER) in dancers during static postures and technical steps of classical ballet (i.e., first position, demi-plié, battement fondu à la seconde, pas jeté à la seconde, and grand jeté à la seconde). A 3D motion analysis system was used for kinematic analysis. The arch height was significantly reduced during the battement fondu à la seconde, pas jeté à la seconde, and grand jeté à la seconde when compared to standing (p = 0...
September 15, 2017: Journal of Dance Medicine & Science
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