Journal
GAIT & POSTURE
Volume 28, Issue 4, Pages 545-551Publisher
ELSEVIER IRELAND LTD
DOI: 10.1016/j.gaitpost.2008.03.011
Keywords
Charcot-Marie-Tooth; Cavoid; Foot pain; Pressure
Categories
Funding
- Charcot Marie-Tooth Association of Australia
- Prescription Foot Orthotic Laboratory Association
- Australian Podiatry Education and Research Foundation
- New South Wales Podiatrists Registration Board
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Charcot-Marie-Tooth (CMT) disease often presents with peripheral muscle imbalance associated with a painful caves (medial high-arched) foot deformity which becomes increasingly severe and rigid as the disease progresses. The purpose of this study was to investigate the effect of pes caves on foot pain and dynamic plantar pressure in CMT, and to explore the relationships between plantar pressure and pain. Sixteen participants diagnosed with CMT and painful pes caves were assessed for foot posture, ankle dorsiflexion range of motion, levels of foot pain, functional impairment, health-related quality of life and plantar pressure distribution while walking. Plantar pressure parameters (mean pressure, peak pressure, pressure-time integral) and contact duration were measured using the Novel Pedar (R) in-shoe capacitance transducer system and the foot was divided into rearfoot, midfoot and forefoot regions for analysis. Increasing caves foot deformity was associated with more widespread foot pain and increased pressure under the forefoot and midfoot regions. In contrast, peak pressure decreased under the rearfoot. Neither relationship was found between foot pain intensity and any of the pressure variables, nor was ankle dorsiflexion range of motion correlated with pain location, intensity or degree of pes caves. Although pes caves in CMT is associated with substantial pain and dysfunction, there is no clear link between foot pain and plantar pressure. The more severe the degree of pes caves, however, the more pressure develops under the lateral margin of the foot; probably as a result of the changed foot-ground contact seen during gait. (C) 2008 Elsevier B.V. All rights reserved.
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