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Measuring alignment of the hindfoot
Gabrielle J M Tuijthof1, Just L Herder, Peter E Scholten
1Man-Machine Systems and Control, Department of Design, Engineering, and Production, Delft University of Technology, Mekelweg 2, Delft, 2628 CD, The Netherlands. g.j.tuijthof@amc.uva.nl
Journal of Biomechanical Engineering
|September 3, 2004
Summary
A new measurement system reliably assesses hindfoot alignment during subtalar arthrodesis surgery. This device improves surgical correction quality by enabling accurate peroperative measurement of hindfoot alignment.
Area of Science:
- Orthopedic surgery
- Biomechanics
Background:
- Subtalar arthrodesis aims to correct hindfoot alignment, a goal achieved in only about half of cases.
- Accurate hindfoot alignment measurement is crucial for successful subtalar arthrodesis outcomes.
Purpose of the Study:
- To develop and evaluate a novel measurement system for reliable hindfoot angle assessment.
- To enhance the quality of hindfoot alignment correction during subtalar arthrodesis.
Main Methods:
- A new measurement system was developed to quantify hindfoot angle.
- Measurements were taken in standing weight-bearing and prone non-weight-bearing positions.
- Results were compared against hindfoot angles derived from photographic images.
Main Results:
- The system demonstrated high intratester accuracy (1.4°) and intertester accuracy (2.2°).
- Intratester reliability was 0.9, and intertester reliability was 0.74.
- The device provided reliable measurements across different positions.
Conclusions:
- The developed measurement system reliably quantifies hindfoot alignment.
- Peroperative measurement capability of this device can significantly improve subtalar arthrodesis correction quality.