Centre of pressure characteristics in normal, planus and cavus feet

Buldt, AK; Forghany, S; Landorf, KB; Murley, GS; Levinger, P; Menz, HB

Abstract

Background

The aim of this study was to compare centre of pressure (COP) characteristics between healthy adults with normal, planus or cavus feet who were allocated to groups based on reliable foot posture measurement techniques.

Methods

Ninety-two healthy adult participants (aged 18 to 45) were recruited and classified as either normal (n = 35), pes planus (n = 31) or pes cavus (n = 26) based on Foot Posture Index, Arch Index and normalised navicular height truncated measurements. Barefoot walking trials were conducted using an emed®-x 400 plantar pressure system (Novel GmbH, Munich, Germany). Average, maximum, minimum and range (difference between maximum and minimum) values were calculated for COP velocity and lateral-medial force index during loading response, midstance, terminal stance and pre-swing phases of stance. The COP excursion index was also calculated. One-way analyses of variance were used to compare the three foot posture groups.

Results

The cavus foot exhibited the slowest average and minimum COP velocity during terminal stance, but this pattern was reversed during pre-swing, when the cavus foot exhibited the fastest maximum COP velocity. The planus foot exhibited the smallest lateral medial force index range during terminal stance. There were no differences between the groups for COP excursion index.

Conclusion

These findings indicate that there are differences in COP characteristics between foot postures, which may represent different mechanisms for generating force to facilitate forward progression of the body during the propulsive phases of gait.

Citation

Buldt, A., Forghany, S., Landorf, K., Murley, G., Levinger, P., & Menz, H. (2018). Centre of pressure characteristics in normal, planus and cavus feet. Journal of Foot and Ankle Research, 11(3), https://doi.org/10.1186/s13047-018-0245-6

• Journal Article Type: Article
• Acceptance Date: Jan 16, 2018
• Online Publication Date: Feb 5, 2018
• Publication Date: Feb 5, 2018
• Deposit Date: Feb 26, 2018
• Publicly Available Date: Feb 26, 2018
• Journal: Journal of Foot and Ankle Research
• Publisher: Springer Verlag
• Volume: 11
• Issue: 3
• DOI: https://doi.org/10.1186/s13047-018-0245-6
• Keywords: Biomechanics, Centre of pressure, Foot, Foot posture, Gait
• Publisher URL: http://dx.doi.org/10.1186/s13047-018-0245-6
• Related Public URLs: https://jfootankleres.biomedcentral.com/