In-shoe plantar pressure measurements for the evaluation and adaptation of foot orthoses in patients with rheumatoid arthritis: A proof of concept study

Gait Posture. 2016 Mar;45:45-50. doi: 10.1016/j.gaitpost.2015.12.039. Epub 2015 Dec 29.

Abstract

Objectives: Improving foot orthoses (FOs) in patients with rheumatoid arthritis (RA) by using in-shoe plantar pressure measurements seems promising. The objectives of this study were to evaluate (1) the outcome on plantar pressure distribution of FOs that were adapted using in-shoe plantar pressure measurements according to a protocol and (2) the protocol feasibility.

Methods: Forty-five RA patients with foot problems were included in this observational proof-of concept study. FOs were custom-made by a podiatrist according to usual care. Regions of Interest (ROIs) for plantar pressure reduction were selected. According to a protocol, usual care FOs were evaluated using in-shoe plantar pressure measurements and, if necessary, adapted. Plantar pressure-time integrals at the ROIs were compared between the following conditions: (1) no-FO versus usual care FO and (2) usual care FO versus adapted FO. Semi-structured interviews were held with patients and podiatrists to evaluate the feasibility of the protocol.

Results: Adapted FOs were developed in 70% of the patients. In these patients, usual care FOs showed a mean 9% reduction in pressure-time integral at forefoot ROIs compared to no-FOs (p=0.01). FO adaptation led to an additional mean 3% reduction in pressure-time integral (p=0.05). The protocol was considered feasible by patients. Podiatrists considered the protocol more useful to achieve individual rather than general treatment goals. A final protocol was proposed.

Conclusions: Using in-shoe plantar pressure measurements for adapting foot orthoses for patients with RA leads to a small additional plantar pressure reduction in the forefoot. Further research on the clinical relevance of this outcome is required.

Keywords: Foot orthoses; In-shoe plantar pressure measurements; Rheumatoid arthritis.

Publication types

  • Observational Study
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Adaptation, Physiological / physiology*
  • Arthritis, Rheumatoid / physiopathology
  • Arthritis, Rheumatoid / rehabilitation*
  • Equipment Design
  • Feasibility Studies
  • Female
  • Foot / physiopathology*
  • Foot Orthoses*
  • Humans
  • Male
  • Middle Aged
  • Pressure
  • Shoes*