A Method of Dynamic Foot-Pressure Measurement for the Evaluation of Pediatric Orthopaedic Foot Deformities

Bowen, Thomas R.; Miller, Freeman; Castagno, Patrick; Richards, Jennifer C.; Lipton, Glenn E.

doi:10.1097/01241398-199811000-00017

Cited by 52 publications

(30 citation statements)

References 14 publications

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“…Coronal plane pressure index (CPPI) represents valgus-varus deviation [8]. The CPPI is calculated by subtracting lateral foot pressure from medial foot pressure and then dividing the result by the sum of mid-and forefoot pressure ([MMF + MFF] À [LMF + LFF]/[MMF + MFF + LMF + LFF]) [9]. The normal range is (À30 to 12), with values less than (À30) and more than (12) indicating varus and valgus deviation of the foot respectively.…”

Section: Patient Assessmentmentioning

confidence: 99%

Correlation of radiographic and pedobarograph measurements in planovalgus foot deformity

2012

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Section: Patient Assessmentmentioning

confidence: 99%

Correlation of radiographic and pedobarograph measurements in planovalgus foot deformity

2012

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“…The CPPI represents valgus-varus deviation [5]. The CPPI was calculated by subtracting the lateral foot pressure from the medial foot pressure and then dividing the result by the sum of the midand forefoot pressure ( [10]. The normal range is -30 to 12, with values less than -30 indicating varus deviation of the foot.…”

Section: Data Collectedmentioning

confidence: 99%

“…Foot pressure (pedobarograph) was measured using the Tekscan High-Resolution Pressure Assessment System (Tekscan Inc., South Boston, MA) [10]. The foot was divided into five components, namely, medial midfoot (MMF), medial forefoot (MFF), lateral midfoot (LMF), lateral forefoot (LFF), and heel.…”

Section: Data Collectedmentioning

confidence: 99%

Pes planovalgus deformity surgical correction in ambulatory children with cerebral palsy

Kadhim

Holmes

Church

et al. 2012

Journal of Children's Orthopaedics

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Purpose Planovalgus foot deformity is common in diplegic and quadriplegic patients. Surgery is the definitive treatment to restore the alignment of the talus, calcaneus, and navicular bones. We aimed, in the current study, to compare the effectiveness of subtalar fusion and calcaneal lengthening, and to assess the recurrence in ambulatory children with cerebral palsy. Methods This is a retrospective study of 78 patients (138 feet diagnosed with planovalgus deformity) who underwent surgical correction using subtalar fusion or calcaneal lengthening. Range of motion, radiographic indices, kinematic, and pedobarographic data were used to examine the deformity and the outcome of surgery. A repeated measures analysis of variance (ANOVA) was used to test the study hypothesis. Results Most of the patients were diplegic (87.2 %) and the mean age at surgery was 11.9 ± 2.9 years (range from 4.7 to 18.3 years), with a mean follow-up of 5 ± 4.4 years (range from 1 to 15.4 years). Sixty-three feet were treated with calcaneal lengthening, while 75 were treated with subtalar fusion. The feet treated with subtalar fusion were more severe preoperatively. However, both surgery groups showed improvement postoperatively. Among 12 cases of recurrence, medial column fusion was the main surgery performed to correct the deformity.Conclusions Surgery is effective in the treatment of planovalgus deformity in ambulatory children with cerebral palsy. Severe and rigid planovalgus feet can be treated effectively with subtalar fusion. Feet with milder deformity show good results, with calcaneal lengthening. Surgery provides good correction in young patients, but there is a higher recurrence rate.

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“…By adding the two medial segments of the foot and subtracting the two lateral segments, the result was divided into the whole forefoot and midfoot impulse to create an index. This index defines a measure of valgus/varus foot posture, defined as the relative medial-lateral difference of combined mid-and forefoot impulse (MMF + MFF) -(LMF + LFF)/(MMF + MFF + LFF + LMF) [1] (Fig. 1).…”

Section: Technical Proceduresmentioning

confidence: 99%

“…Dynamic pediobarograph, which measures the foot-floor contact pressure during walking, provides a quantitative functional assessment. An objective dynamic assessment of the foot while walking is obtained and the degree of deformity can be quantified [1][2][3][4][5]. There have been studies reporting use of the pediobarograph in the evaluation of different foot deformities in adults with rheumatoid arthritis, diabetes mellitus and forefoot problems [6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Reliability of pediobarographs for paediatric foot deformity

Riad

Coleman

Henley

et al. 2007

Journal of Children's Orthopaedics

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Purpose Dynamic pediobarograph measures foot-floor contact pressure during walking and provides a quantitative functional assessment. The goal of this study was to assess the reliability of pediobarograph measurements in normal children and in those with cerebral palsy (CP). Materials and methods During the first investigation, five non-disabled children and four with CP had three pediobarograph measurements taken of each foot, repeated five times. The pediobarographs were analysed by dividing the foot into five segments; the heel, the lateral midfoot, the medial midfoot, the lateral forefoot and the medial forefoot. A measure of valgus/varus foot posture was defined as the relative medial-lateral difference of combined mid-and forefoot impulse, named valgus/varus index. During the second investigation, 50 children (100 feet) with spastic diplegic CP were studied to calculate the standard error of measurements (SEM), to investigate the number of pediobarograph measurements necessary to obtain accurate results. The third investigation was an inter-and intraobserver study performed on one normal subject's repeated measurements. ResultsIn the first investigation, the group with CP had a significantly increased variability in the medial midfoot (P = 0.013). The variability of the valgus/varus index had a standard deviation of 13%, demonstrating that this measure is relatively stable. The SEM and 95% confidence interval from the second experiment showed that, even if the accuracy increased with the number of measurements, the greatest gain seemed to be contributed by increasing the number of measurements from 3 to 6. The inter-and intraobserver study showed good to mostly excellent agreement. Conclusion Pediobarograph measurements can be used to monitor and quantitatively assess the progressive changes of foot deformity over time. Pediobarograph is a reliable measurement that shows little variability between measurements at the same occasion and between measurements on different days. Three to six measurements seems practical and adequate to obtain. The technical aspect of measuring shows good repeatability and agreement between observers.

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A Method of Dynamic Foot-Pressure Measurement for the Evaluation of Pediatric Orthopaedic Foot Deformities

Cited by 52 publications

References 14 publications

Correlation of radiographic and pedobarograph measurements in planovalgus foot deformity

Correlation of radiographic and pedobarograph measurements in planovalgus foot deformity

Pes planovalgus deformity surgical correction in ambulatory children with cerebral palsy

Reliability of pediobarographs for paediatric foot deformity

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