scholarly journals Arch Height Index, Arch Rigidity Index and Arch Stiffness Values in a Symptomatic Population

2021 ◽  
Author(s):  
Megan Balsdon ◽  
Michaela E Khan ◽  
Dillon Richards ◽  
Colin E Dombroski
Keyword(s):  
Hallux Valgus ◽  
Measurement System ◽  
Plantar Fasciitis ◽  
Coefficient Of Determination ◽  
Arch Height ◽  
Normative Sample ◽  
Weak Relationship ◽  
Index Measurement ◽  
Arch Structure ◽  
Rigidity Index

BACKGROUND: Normative studies on the Arch Height Index (AHI), Arch Rigidity Index (ARI), and arch stiffness have primarily focused on healthy populations, with little consideration of pathology. The purpose of this study was to create a normative sample of the aforementioned measurements in a pathological sample and to identify relationships between arch structure measurements and pathology. METHODS: AHI was obtained bilaterally at 10% and 90% weightbearing conditions using the Arch Height Index Measurement System (AHIMS). ARI and arch stiffness were calculated using AHI measurements. Dependent t-tests compared right and left, dominant and non-dominant, and injured and non-injured limbs. Measurements of the dominant foot were compared between sexes using independent t-tests. Relationships between arch stiffness and age, sex, and AHI were examined using the coefficient of determination (R2). One-way ANOVAs were used to determine differences between arch structure measurements and number of pathologies or BMI. RESULTS: A total of 110 participants reported either one (n=55), two (n=38), or three or more (n=17) pathologies. Plantar fasciitis (n=31) and hallux valgus (n=28) were the most commonly reported primary concerns. AHI, ARI, and arch stiffness did not differ between limbs for any comparisons, nor between sexes. Between subgroups of BMI and number of pathologies, no differences exist in AHI or ARI; however, BMI was found to have an impact on AHI (10%WB) and arch stiffness (p<.05). Arch stiffness showed a weak relationship to AHI, where a higher AHI was associated with a stiffer arch (R2=0.06). CONCLUSIONS: Normative AHI, ARI and arch stiffness values were established in a pathological sample with a large incidence of plantar fasciitis and hallux valgus. Findings suggest relationships between arch stiffness and both BMI and arch height; however, few trends were noted in AHI and ARI. Determining relationships between arch structure and pathology is helpful for both clinicians and researchers.

Caliper Method Versus Digital Photogrammetry for Assessing Arch Height Index in Pregnant Women

2016 ◽  
Vol 106 (6) ◽  
pp. 406-410
Author(s):  
Kathryn D. Harrison ◽  
Jean L. McCrory
Keyword(s):  
Pregnant Women ◽  
Measurement System ◽  
Mixed Model ◽  
Intraclass Correlation ◽  
Control Group ◽  
Clinical Use ◽  
Digital Photogrammetry ◽  
Arch Height ◽  
Index Measurement ◽  
Foot Arch

Background: Foot anthropometry may be altered during pregnancy. Pregnant women often report lower-extremity pain that may be related to these alterations. The Arch Height Index Measurement System is a common method of foot arch assessment; however, the required calipers are costly and are not widely available. Thus, we compared the reliability of a digital photogrammetry method of arch height index (AHI) assessment with that of the Arch Height Index Measurement System. Methods: Ten pregnant women (mean ± SD: age, 29 ± 4 years; height, 166.9 ± 6.8 cm; weight, 63.3 ± 8.8 kg) in their second trimester were recruited to participate, along with a control group of 10 nulliparous weight-matched women (mean ± SD: age, 22 ± 2 years; height, 164.6 ± 4.8 cm; weight, 61.5 ± 8.1 kg). During the second and third trimesters, and once postpartum, AHI was assessed using calipers and using digital photogrammetry. Mixed model absolute agreement type intraclass correlation coefficient (ICC) was used to determine correlation between the two methods for sitting and standing AHI. Results: The ICC results for sitting AHI only (0.819–0.968) were reasonable for clinical measures; ICC values for standing AHI (0.674–0.789) did not reach values deemed reasonable for clinical use. Conclusions: Caliper and digital photogrammetry methods of AHI assessment are correlated in pregnant women; however, for standing AHI, the correlation is not sufficient for clinical use. Photogrammetry may still be appropriate for clinical use, as long as values from this method are not substituted directly for results obtained from calipers.

Arch Height Index Measurement System

2008 ◽  
Vol 98 (2) ◽  
pp. 102-106 ◽  
Author(s):  
Robert J. Butler ◽  
Howard Hillstrom ◽  
Jinsup Song ◽  
Christine J. Richards ◽  
Irene S. Davis
Keyword(s):  
Measurement System ◽  
Interrater Reliability ◽  
Measurement Procedure ◽  
Normative Values ◽  
Structural Factors ◽  
Arch Height ◽  
Lower Extremity Injuries ◽  
Index Measurement ◽  
Recreational Runners ◽  
Extremity Injuries

Background: The purposes of this study were 1) to determine the intrarater and interrater reliability of the arch height index measurement system device, 2) to establish population normative values for the arch height index in recreational runners, and 3) to compare arch height index values between the right and left feet and between genders. Methods: Eleven subjects were used to establish intrarater and interrater reliability of the arch height index measurement system. This system was then used to measure the arch height index of 100 recreational runners. Results: Measurements taken with the arch height index measurement system device exhibited high intrarater and interrater reliability. The mean ± SD arch height index of the recreational runners was 0.340 ± 0.030. Men had larger feet than women, but the arch height index between genders was similar. Conclusions: The arch height index measurement system device is reliable to use between testers while simplifying the measurement procedure for recording the arch height index. The arch height index may be helpful in identifying potential structural factors that predispose individuals to lower-extremity injuries. (J Am Podiatr Med Assoc 98(2): 102–106, 2008)

The Arch-Height-Index Measurement System: A New Method of Foot Classification

2006 ◽  
Vol 11 (5) ◽  
pp. 56-57 ◽  
Author(s):  
Carl G. Mattacola ◽  
Jennifer S. Howard ◽  
Dustin Briggs
Keyword(s):  
Measurement System ◽  
New Method ◽  
Arch Height ◽  
System A ◽  
Index Measurement

Arch Height Index Normative Values of College-Aged Women Using the Arch Height Index Measurement System

2013 ◽  
Vol 103 (3) ◽  
pp. 213-217 ◽  
Author(s):  
Wendi H. Weimar ◽  
Justin F. Shroyer
Keyword(s):  
Measurement System ◽  
Metatarsophalangeal Joint ◽  
Standing Position ◽  
Normative Values ◽  
Arch Height ◽  
First Metatarsophalangeal Joint ◽  
Index Measurement ◽  
Foot Arch ◽  
Left And Right ◽  
The Mean

Background: The arch height index measurement system (AHIMS) device has been found to be a reliable and valid instrument for measuring the arch height index (AHI) of the feet of individuals; however, normative data for the AHI are lacking for various populations. Therefore, the purposes of this study were to establish population normative AHI values for college-aged females and to compare the observed AHI data across right and left feet. Methods: Seventy-nine college-aged females served as study participants, and both feet were measured using the AHIMS in the seated and standing positions. The AHI was calculated as the ratio of the dorsum height of the foot at half the total foot length to the length of the foot from the heel to the base of the first metatarsophalangeal joint. Results: The mean ± SD AHI values for the left and right feet in the seated position were 0.355 ± 0.031 and 0.369 ± 0.034, respectively. The mean ± SD AHI values for the left and right feet in the standing position were 0.338 ± 0.031 and 0.343 ± 0.033, respectively. There were significant differences observed between the left and right feet for the seated (P < .001) and standing (P = .003) positions. Conclusions: Normative values were established for college-aged females for the AHI using the AHIMS. Differences were noted between the right and left feet of the participants sampled. Although normative values were obtained, we caution against using these values to classify foot arch types based solely on a sample of the population studied. (J Am Podiatr Med Assoc 103(3): 213–217, 2013)

scholarly journals Comparison of the Changes in the Structure of the Transverse Arch of the Normal and Hallux Valgus Feet under Different Loading Positions

2019 ◽  
Vol 2 (1) ◽  
pp. 3 ◽  
Author(s):  
Hala Zeidan ◽  
Yusuke Suzuki ◽  
Yuu Kajiwara ◽  
Kengo Nakai ◽  
Kanako Shimoura ◽  
...  
Keyword(s):  
Hallux Valgus ◽  
Weight Bearing ◽  
Quiet Standing ◽  
Arch Height ◽  
Imaging Device ◽  
Transverse Arch ◽  
Weight Shift ◽  
Structural Differences ◽  
The Difference ◽  
Imagej Software

The transverse arch of the foot receives and transfers loads during gait. We aim to identify the difference in its structure between normal feet and hallux valgus (HV) feet and the effects of loading. Two groups, Without-HV and With-HV (HV ≥ 20°), were assessed using a weight-bearing plantar ultrasound imaging device to view the structure of the transverse arch. Measurements were recorded in sitting, quiet standing, and 90% weight-shift (90% W.S.) loading positions on the tested foot. Images were then processed using ImageJ software to analyze the transverse arch length (TAL), the length between the metatarsal heads (MTHs), transverse arch height (TAH), and the height of each MTH. TAL significantly increased in all positions in the With-HV group compared to that in the Without-HV group. It also increased in both groups under loading. TAH was not significantly higher in the With-HV group than in the Without-HV group in sitting and standing positions, except in the 90% W.S position, where both groups showed similar results. TAH decreased in both groups under loading. In summary, the structure of the transverse arch changes in HV feet and under loading conditions. This finding will help understand the structural differences between normal and HV feet and help resolve shoe fit problems in individuals with HV deformity.

scholarly journals Measurement System for Lossy Capacitive Sensors: Application to Edible Oils Quality Assessment

Sensors ◽  
2019 ◽  
Vol 19 (19) ◽  
pp. 4299 ◽  
Author(s):  
Ahmed Fendri ◽  
Ahmed Yahia Kallel ◽  
Hanen Nouri ◽  
Hamadi Ghariani ◽  
Olfa Kanoun
Keyword(s):  
Measurement System ◽  
Relative Permittivity ◽  
Edible Oils ◽  
Low Cost ◽  
Oil Quality ◽  
Capacitive Sensor ◽  
Polar Compounds ◽  
Coefficient Of Determination ◽  
Chemical Parameters ◽  
Dielectric Parameters

This paper aimed to develop a portable, low-cost, and easy-to-use measurement system for oil quality degradation assessment. The main two chemical parameters affected by frying are the total polar compounds (TPC) and free fatty acids. The system should characterize the change of chemical parameters by measuring the changes in its dielectric parameters. The dielectric parameters, relative permittivity, and conductivity are measured by measuring the capacitance and resistance of a capacitive sensor dipped in oil. The main challenges are that the corresponding changes of the capacitance and resistance are very small and the presence of stray effects. For this reason, the measurement system should be able to detect changes in capacitance and resistance with high resolution and with good immunity to stray effects. The proposed measurement system is based on the conversion of impedance to voltage and time and combining, therefore, having two measurement methods in one circuit. In this way, it is possible to measure the dielectric and resistive parameters and not only the relative permittivity as was done in previous works. The results showed a strong correlation between the chemical and electrical parameters with a coefficient of determination in the range of 0.9.

Foot Arch Height and Rigidity Index Associated with Balance in Elderly Men

2014 ◽  
Vol 46 ◽  
pp. 458-459
Author(s):  
Mahshid Saghazadeh ◽  
Ayane Sato ◽  
Tomohiro Okura
Keyword(s):  
Arch Height ◽  
Elderly Men ◽  
Foot Arch ◽  
Rigidity Index

Metatarsus Primus Elevatus in Hallux Rigidus

2005 ◽  
Vol 95 (3) ◽  
pp. 221-228 ◽  
Author(s):  
Thomas S. Roukis
Keyword(s):  
Hallux Valgus ◽  
Plantar Fasciitis ◽  
Metatarsal Head ◽  
Hallux Rigidus ◽  
Radiographic Measurement ◽  
Morton’S Neuroma ◽  
Significant Difference ◽  
History Of ◽  
Morton's Neuroma ◽  
Grade Ii

Two hundred seventy-five lateral weightbearing radiographs of isolated pathology were reviewed and stratified into hallux rigidus (n = 100), hallux valgus (n = 75), plantar fasciitis (n = 50), and Morton’s neuroma (n = 50) groups. The patient population consisted of healthy individuals with no history of foot trauma or surgery. The first to second metatarsal head elevation, Seiberg index, first to second sagittal intermetatarsal angle, first to fifth metatarsal head distance, and hallux equinus angle were measured in each population. Statistically significant differences were found between the hallux valgus, plantar fasciitis, and Morton’s neuroma populations and the hallux rigidus population, which showed greater elevation of the first metatarsal relative to the second for each radiographic measurement technique. In the hallux rigidus population, there was a statistically significant difference between grade II and grades I and III regarding the first to fifth metatarsal head distance (greater in grade II) and the hallux equinus angle (lower in grade II). A review of the literature and comparison with historical controls reveals that metatarsus primus elevatus exists in hallux rigidus and is greater than that found in hallux valgus, plantar fasciitis, and Morton’s neuroma groups. (J Am Podiatr Med Assoc 95(3): 221–228, 2005)

scholarly journals Non-invasive moisture content measurement system based on the ESP8266 microcontroller

2020 ◽  
Vol 9 (3) ◽  
pp. 924-932
Author(s):  
Agustami Sitorus ◽  
Novrinaldi Novrinaldi ◽  
Ramayanty Bulan
Keyword(s):  
Moisture Content ◽  
Measurement System ◽  
Coefficient Of Determination ◽  
Drying Process ◽  
Electrical Systems ◽  
Non Invasive ◽  
Content Measurement ◽  
Test Parameters ◽  
Sensor Signals ◽  
Moisture Content Measurement

Moisture content in the process of drying is often unknown when carrying out the drying process, especially the fluidized dryer. A lot of experimental designs are needed when observing the drying phenomenon more deeply.  It is because to stop and repeat drying process from the beginning again when the sample is taken to test its moisture content needed more experiments. Therefore, this paper presents development of a non-intrusive moisture measurement system prepared for fluidization type dryers. The method used in to conduct this research consists of (i) structural design analysis and (ii) functional (mechanical and electrical systems) and (iii) simple testing of the water content measurement system of constructed material. Test parameters observed include errors in measuring and fluctuating sensor signals against vibration applied to the weighing system. The results showed that non-intrusive moisture content measurement system for fluidized dryers based on the ESP8266 microcontroller had been successfully developed and worked normally. The measurement system has been calibrated with a coefficient of determination (R2) close to one. Measurement error resulting from the effect of vibration on this system shows a very satisfactory value of 6.89%.

Sign in / Sign up

Export Citation Format

Share Document