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KMID : 0357220150270050311
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Journal of Korean Society Physical Therapy
2015 Volume.27 No. 5 p.311 ~ p.314
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Reliability of the Foot Posture Index (FPI-6) for Assessment of Stroke Patients
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Lee Jong-Dae
Kim Young-Mi
Kim Kyung
Koh Da-Hyun
Choi Myeong-Su
Lee Ho-Jung
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Abstract
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Purpose: This study attempted to determine intra-rater reliability and inter-rater reliability for measurement of foot form using the FPI-6 (Foot Posture Index) in patients with hemiplegia caused by stroke.
Methods: Twenty two stroke patients were recruited into the research and their foot posture was evaluated using the FPI. Two raters assessed 6 items sequentially in accordance with the FPI-6 manual. This procedure involved asking the subject to take several steps in-place, prior to settling into a comfortable stance position with double limb support. Subjects were instructed to stand still with their arms by their sides and look straight ahead. FPI-6 values ranged from -2 to +2 for each of the six criteria and from -12 to +12 for the total score, indicating a position for each foot either along the supinated (negative score) to pronated (more than +6) continuum of foot posture.
Results: The results showed that intra-rater reliability and inter-rater reliability for a total FPI-6 score was high: 0.807-0.888. An almost perfect agreement between the two raters was identified in the foot’s morphological classification (Somer’s D=0.712; p<0.05). Intra-percentage agreement was high (88.6%).
Conclusion: The FPI-6 is a quick, simple, and reliable clinical tool with demonstrated good to excellent intra-rater reliability and good inter-rater reliability when used in assessment of the stroke patient’s foot.
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KEYWORD
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Foot posture index, Reliability, Stroke
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