- Title
- Can pedobarography predict the occurrence of heel rocker in children with lower limb spasticity?
- Creator
- Mudge, Anita J.; Sangeux, Morgan; Wojciechowski, Elizabeth A.; Louey, Melissa G.; McKay, Marnee J.; Baldwin, Jennifer N.; Dwan, Leanne N.; Axt, Matthias W.; Burns, Joshua
- Relation
- NHMRC.1031893 http://purl.org/au-research/grants/nhmrc/1031893
- Relation
- Clinical Biomechanics Vol. 71, Issue January 2020, p. 208-213
- Publisher Link
- http://dx.doi.org/10.1016/j.clinbiomech.2019.10.022
- Publisher
- Elsevier
- Resource Type
- journal article
- Date
- 2020
- Description
- Background: Pedobarography software calculates the centre-of-pressure trajectory in relation to the foot to quantify foot contact patterns. This study presents two new pedobarography measures using the centre-of-pressure trajectory to assess heel rocker. Methods: To validate these pedobarography measures against 3D gait analysis, emed®-x and Vicon Nexus gait analysis data were captured from 25 children aged 8–16 years (11 male) with unilateral (n = 18) and bilateral (n = 7) cerebral palsy or acquired brain injury. 3D gait analysis identified whether heel rocker was intact (n = 22 feet) or absent (n = 28 feet) based on centre-of-pressure at initial contact and the ankle kinematic curve between 0 and 2% of the gait cycle. Pedobarography measures calculated from the initial centre-of-pressure point were the distance to the heel (point of initial contact) and to the most posterior point of the trajectory (rollback), reported as a percentage of foot length. Findings: The median point of initial contact in limbs with an intact heel rocker was 9% (range 7–12%) and median rollback was 0% (range 0–0.2%), whereas the median point of initial contact in limbs with an absent heel rocker was 58% (range 8–78%) and rollback was 18% (range 0–40%). Point of initial contact is the more accurate method for predicting heel rocker, with a threshold of 14% of foot length identifying the correct heel rocker status in 94% of cases. Interpretation: Point of initial contact can assess heel rocker with high accuracy. Both point of initial contact and rollback provide sensitive information on foot strike pattern, enhancing the utility of pedobarography.
- Subject
- pedobarography; plantar pressure; centre of pressure; heel rocker; first rocker
- Identifier
- http://hdl.handle.net/1959.13/1425000
- Identifier
- uon:38184
- Identifier
- ISSN:0268-0033
- Language
- eng
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