Related Experiment Video
Updated: Aug 1, 2026
08:08
Oscillation and Reaction Board Techniques for Estimating Inertial Properties of a Below-knee Prosthesis
Published on: May 8, 2014
Orthotic design and foot impression procedures to control foot alignment
A K L Leung1, J C Y Cheng, A F T Mak
1Jockey Club Rehabilitation Engineering Centre, The Hong Kong Polytechnic University, Hong Kong, China. rcaaron@polyu.edu.hk
Prosthetics and Orthotics International
|January 22, 2005
Summary
New foot orthotic methods improve reliability in assessing foot deformities. This approach focuses on stabilizing the arch and lateral foot structures for better treatment of lower limb issues.
Area of Science:
- Podiatry
- Biomechanics
- Orthotics
Background:
- Traditional subtalar joint neutral position theories for foot orthotics face scrutiny regarding assessment reliability.
- Clinical observations link subtalar pronation to lower limb pain, but assessment validity is questioned.
- Recent biomechanics research suggests revised orthotic design principles focusing on arch stabilization and load transmission.
Purpose of the Study:
- To introduce and evaluate a reliable foot impression method for orthotic design.
- To assess the reliability of a new prone lying manipulated foot impression technique.
- To provide a more consistent basis for orthotic intervention in foot and ankle disorders.
Main Methods:
- A novel prone lying manipulated foot impression technique using low-temperature thermoplastic material was developed.
- Ten subjects participated in reliability testing conducted by two specialized orthotists.
- Measurements included forefoot width, navicular height, and forefoot-rearfoot relationship.
Main Results:
- High intrarater and interrater reliability were demonstrated for forefoot width and navicular height measurements.
- The forefoot-rearfoot relationship showed high reliability, indicated by small root mean square variance.
- The new impression method proved reliable for orthotic design parameters.
Conclusions:
- The introduced foot impression method offers high reliability for key foot measurements.
- This technique supports more consistent and effective orthotic intervention for foot and ankle conditions.
- The findings challenge traditional posting methods, emphasizing reliable impression procedures for improved outcomes.
