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plantar pressure

Athol Thomson, Einar Einarsson, Clint Hansen, Chris Bleakley, Rod Whiteley
OBJECTIVES: Compare maximum plantar force (Fmax) during running in soccer players following anterior cruciate ligament reconstruction (ACLR) as they pass return to sport (RTS) criteria. DESIGN: Case control study. METHODS: Soccer players after ACLR (n=16) and matched healthy controls (n=16) ran on a treadmill at 12, 14 and 16km/h while plantar loading data was measured using an in-shoe pressure system (Pedar-X, Novel). Fmax and contact time of the injured and uninjured limbs in athletes <9months post-ACLR and those ≥9months ACLR were compared to healthy players (no ACLR)...
March 1, 2018: Journal of Science and Medicine in Sport
Andrew K Buldt, Jamie J Allan, Karl B Landorf, Hylton B Menz
BACKGROUND: Foot posture is a risk factor for some lower limb injuries, however the underlying mechanism is not well understood. Plantar pressure analysis is one technique to investigate the interaction between foot posture and biomechanical function of the lower limb. RESEARCH QUESTION: The aim of this review was to investigate the relationship between foot posture and plantar pressure during walking. METHODS: A systematic database search was conducted using MEDLINE, CINAHL, SPORTDiscus and Embase to identify studies that have assessed the relationship between foot posture and plantar pressure during walking...
February 23, 2018: Gait & Posture
Heather Reilly, Louise M Lane, Mikel Egaña
PURPOSE: Age-related exercising leg blood flow (LBF) responses during dynamic knee-extension exercise and forearm blood flow responses during handgrip exercise are preserved in normally active men but attenuated in activity-matched women. We explored whether these age- and sex-specific effects are also apparent during isometric calf plantar-flexion incremental exercise. METHODS: Normally active young men (YM, n = 15, 24 ± 2 years), young women (YW, n = 8, 22 ± 1 years), older men (OM, n = 13, 70 ± 7 years) and older women (OW, n = 10, 64 ± 7 years) were tested...
March 3, 2018: European Journal of Applied Physiology
Jeannette Østergaard Penny, Merete Brink Speedtsberg, Thomas Kallemose, Jesper Bencke
The study sought to investigate whether an orthotic stiletto could modulate the pressure and comfort under the forefoot, arch and heel that stiletto wearers experience. Twenty-two women participated. We measured the peak pressure and pressure-time integral for orthotic stilettos with built-in metatarsal pad, heel cup and arch support; standard stilettos without inlays; and trainers. Comfort was recorded during 3x3 working days. The orthotic stiletto exhibited lower metatarsal head1 (MTH) and MTH2+3 and heel pressures than the standard stiletto (p < ...
March 2, 2018: Ergonomics
Kuniyasu Ikeoka, Shiro Hoshida, Tetsuya Watanabe, Yukinori Shinoda, Tomoko Minamisaka, Hidetada Fukuoka, Hirooki Inui, Keisuke Ueno, Yasushi Sakata
AIM: Maximal hyperemic response, leading to examination of microvascular resistance in lower-limb lesions is not well understood. This study aimed to investigate the infrainguinal arterial physiological response through a hyperemic condition and the pathophysiological significance of microvascular resistance in peripheral artery disease. METHODS: Sixteen limbs with focal stenosis of the superficial femoral artery (SFA) and 16 control limbs were analyzed. We assessed the fractional flow reserve (FFR), vascular flow reserve (VFR), and hyperemic microvascular resistance (h-MR) of the SFA with a pressure/Doppler flow sensor-tipped combination guidewire before and after endovascular therapy (EVT)...
February 28, 2018: Journal of Atherosclerosis and Thrombosis
Haneul Lee, Jerrold Petrofsky
CONTEXT:   Although much attention has been paid to the effect of estrogen on the knee ligaments, little has been done to examine the ligaments in the foot, such as the plantar fascia and how they may be altered during the menstrual cycle. OBJECTIVE:   To (1) examine sex differences in plantar fascia thickness and laxity and postural sway and (2) identify any menstrual cycle effects on plantar fascia laxity, postural sway, and neuromuscular tremor between menstruation and the ovulation phase...
February 27, 2018: Journal of Athletic Training
Anthony Tickner, Cheri Klinghard, Jonathan F Arnold, Valerie Marmolejo
INTRODUCTION: As the majority of diabetic foot ulcerations (DFUs) occur on the plantar foot, excessive pressure is a major contributing factor to delayed healing. The gold standard for offloading is the total contact cast (TCC); yet, TCC use is contraindicated in patients with ischemia. Lower extremity ischemia typically presents in the more severe end stages of peripheral arterial disease (PAD). As PAD exists on a severity spectrum from mild to severe, designation of a clear cutoff where TCC use is an absolute contraindication would assist those who treat DFUs on a daily basis...
February 2018: Wounds: a Compendium of Clinical Research and Practice
Tatsunori Watanabe, Kotaro Saito, Kazuto Ishida, Shigeo Tanabe, Ippei Nojima
To investigate the effects of aging on coordination of plantar flexor muscles during bipedal and unipedal stances, we examined a relationship between the center of pressure sway and electromyographic activity of these muscles, and also the common neural input, using a coherence analysis. Healthy young and elderly adults were asked to perform bipedal and unipedal standing. The electromyograms were recorded unilaterally from the medial and lateral gastrocnemius (MG and LG) and soleus (SL) muscles, and the common input was analyzed for MG-LG, MG-SL, and LG-SL pairs in two frequency bands: a delta band, that is associated with force variability, and a beta band, that could reflect the corticospinal drive...
February 26, 2018: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
Jaap J van Netten, Jeff G van Baal, Adriaan Bril, Marieke Wissink, Sicco A Bus
BACKGROUND: Mechanical stress is important in causing and healing plantar diabetic foot ulcers, but almost always studied as peak pressure only. Measuring cumulative plantar tissue stress combines plantar pressure and ambulatory activity, and better defines the load on ulcers. Our aim was to explore differences in cumulative plantar tissue stress between people with healing and non-healing plantar diabetic foot ulcers. METHODS: We analyzed a subgroup of 31 patients from a randomized clinical trial, treated with a removable offloading device for their plantar diabetic forefoot ulcer...
February 19, 2018: Clinical Biomechanics
Hai-Bo Zhou, Chao Zhang, Li-Chuang Wu, Cai-Long Liu
OBJECTIVE: To explore plantar pressure measurement system in treating the first ray hypermobility. METHODS: From June 2013 to January 2014, 16 female patients (20 feet) with hallux valgus with unstable of the first sequence were treated by first tarsometatarsal joint fusion, aged from 42 to 52 years old with an average of(46.5±2.9) years old, the course of disease was from 3 to 5 years. Twenty healthy female(20 feet) were chosen as control group, and single side were only choose, aged from 41 to 55 years old with an average of(46...
June 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
Hilal Keklicek, Baris Cetin, Yeliz Salci, Ayla Fil Balkan, Umut Altinkaynak, Kadriye Armutlu
BACKGROUND: Multiple sclerosis (MS) is a complex disorder affecting subjects by multiple system impairments. Gait problems are common in subjects with MS and various factors such as; ataxia, hypertonic muscles or/and seconder musculoskeletal system deformities affect the normal plantigrade contact by disturbing accommodation of foot to the ground while walking. The aim of this study was investigating the dynamic plantar pressure distribution and time of maximum pressure in subjects with MS and determining the differences from healthy subjects (HS)...
January 31, 2018: Multiple Sclerosis and related Disorders
Hagen Schmal, Markus Walther, Anja Hirschmüller, Nina Bunert, Norbert P Südkamp, Alexander T Mehlhorn
BACKGROUND: Gastrocnemius recession (GR) has been introduced for treatment of forefoot overload syndrome (FOS). We questioned if GR leads to an altered forefoot load and weakness of plantarflexors in those patients. METHODS: 26 patients suffering from FOS and gastrocnemius tightness underwent GR. A strength power analysis of plantar flexors and a pedobarography was performed. Clinical outcome was measured by Foot Function Index (FFI). RESULTS: Plantarflexors are impaired about 40% six weeks and around 10% 24 weeks following GR compared to the contralateral side...
April 4, 2017: Foot and Ankle Surgery: Official Journal of the European Society of Foot and Ankle Surgeons
N Gutteck, P Savov, M Panian, D Wohlrab, A Zeh, K S Delank
The TMT I arthrodesis is an established procedure for the correction of hallux valgus deformity associated with the instability of the TMT-I joint. A risk of transfer metatarsalgia is reported in the literature associated with persistant elevation of MT-I. Detailed information for ideal positioning of the arthrodesis is missing so far. Clinical, radiological and padobarografical results and their correlations were analyzed with special consideration of the elevation position of the MT-I in a TMT-I arthrodesis using the plantar plate osteosynthesis...
April 25, 2017: Foot and Ankle Surgery: Official Journal of the European Society of Foot and Ankle Surgeons
Qichang Mei, Yaodong Gu, Justin Fernandez
Physique changes during pregnancy lead to gait characteristic variations. This study aimed to analyse gait of pregnant individuals throughout pregnancy and post-partum. Sixteen healthy pregnant women volunteered as participants and had their lower limb kinematics analysed through a VICON three-dimensional motion system and plantar pressure measured with a Novel EMED force plate. Significant changes were observed in pelvic anterior motion, hip and ankle joint kinematics. Mean pressure distribution and COP trajectory deviation altered accordingly with increased pregnancy time, compared with post-partum...
February 2, 2018: Scientific Reports
Xinyao Hu, Jun Zhao, Dongsheng Peng, Zhenglong Sun, Xingda Qu
Postural control is a complex skill based on the interaction of dynamic sensorimotor processes, and can be challenging for people with deficits in sensory functions. The foot plantar center of pressure (COP) has often been used for quantitative assessment of postural control. Previously, the foot plantar COP was mainly measured by force plates or complicated and expensive insole-based measurement systems. Although some low-cost instrumented insoles have been developed, their ability to accurately estimate the foot plantar COP trajectory was not robust...
February 1, 2018: Sensors
Animesh Hazari, Arun G Maiya, Shivashankara K N
BACKGROUND: A kinetic change in thefoot like altered plantar pressure is the most common etiological risk factor for causing foot ulcers among people with diabetes mellitus. Kinematic alterations in joint angle and spatiotemporal parameters of the gait have also been frequently observed in participants with diabetes peripheral neuropathy. Diabetes peripheral neuropathy is the most common long-term standing complication of type 2 diabetes mellitus. It leads to various micro and macrovascular related complication of the foot...
February 1, 2018: Journal of the American Podiatric Medical Association
Pedro Olavo de Paula Lima, Paulo Ricardo Pinto Camelo, Victor Matheus Leite Mascarenhas Ferreira, Paulo Jorge Santiago do Nascimento, Márcio Almeida Bezerra, Gabriel Peixoto Leão Almeida, Rodrigo Ribeiro de Oliveira
Background: Capoeira is a cultural practice with Brazilian roots that combines several elements including dance, fighting and body rhythm. Because of the diverse elements involved in its practice, capoeira is excellent at developing the physical and social abilities of its players. The aim of this study was to compare the biomechanical profile of muscle strength, plantar pressure distribution, and postural balance between players and non-players of capoeira. Methods: We evaluated 51 subjects who were allocated into two groups: capoeira group and control group...
July 2017: Muscles, Ligaments and Tendons Journal
Christina Zong-Hao Ma, Duo Wai-Chi Wong, Anson Hong-Ping Wan, Winson Chiu-Chun Lee
BACKGROUND: The wearing of socks and insoles may affect the ability of the foot to detect tactile input influencing postural balance. OBJECTIVES: The aim of this study was to investigate whether (1) thick socks adversely affected the elderly postural balance and (2) orthopedic insoles could improve the elderly postural balance while wearing thick socks. STUDY DESIGN: Repeated-measures study design. METHODS: In total, 14 healthy older adults were recruited...
January 1, 2018: Prosthetics and Orthotics International
Adam E Fleischer, Shenche Hshieh, Ryan T Crews, Brett J Waverly, Jacob M Jones, Erin E Klein, Lowell Weil, Lowell Scott Weil
BACKGROUND: Metatarsal length is believed to play a role in plantar plate dysfunction, although the mechanism through which progressive injury occurs is still uncertain. We aimed to clarify whether length of the second metatarsal was associated with increased plantar pressure measurements in the forefoot while walking. METHODS: Weightbearing radiographs and corresponding pedobarographic data from 100 patients in our practice walking without a limp were retrospectively reviewed...
January 1, 2018: Foot & Ankle International
Jaap J van Netten, Peter A Lazzarini, David G Armstrong, Sicco A Bus, Robert Fitridge, Keith Harding, Ewan Kinnear, Matthew Malone, Hylton B Menz, Byron M Perrin, Klaas Postema, Jenny Prentice, Karl-Heinz Schott, Paul R Wraight
Background: The aim of this paper was to create an updated Australian guideline on footwear for people with diabetes. Methods: We reviewed new footwear publications, (inter)national guidelines, and consensus expert opinion alongside the 2013 Australian footwear guideline to formulate updated recommendations. Result: We recommend health professionals managing people with diabetes should: (1) Advise people with diabetes to wear footwear that fits, protects and accommodates the shape of their feet...
2018: Journal of Foot and Ankle Research
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