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The Persian Version of the SIGAM Mobility Scale Was Cross-Culturally Adapted and Validated in Adults with Lower Limb Amputation

Fatemeh Azadinia, Mahshid Mosharaf, Atefeh Lesani, Nicola Ryall and Ebrahim Sadeghi-Demneh ()
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Fatemeh Azadinia: Rehabilitation Research Center, Department of Orthotics and Prosthetics, School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran 1347815459, Iran
Mahshid Mosharaf: Musculoskeletal Research Center, Department of Orthotics and Prosthetics, School of Rehabilitation Sciences, Isfahan University of Medical Sciences, Isfahan 8174673461, Iran
Atefeh Lesani: Iranian Red Crescent Society, Rehabilitation Center of Isfahan, Isfahan 8147763113, Iran
Nicola Ryall: Department of Prosthetics and Orthotics, National Rehabilitation Hospital, Dún Laoghaire Co., A96 RPN4 Dublin, Ireland
Ebrahim Sadeghi-Demneh: Musculoskeletal Research Center, Department of Orthotics and Prosthetics, School of Rehabilitation Sciences, Isfahan University of Medical Sciences, Isfahan 8174673461, Iran

Disabilities, 2025, vol. 5, issue 4, 1-11

Abstract: Background: Mobility assessment is a crucial aspect of rehabilitation for individuals with lower limb amputation, as it directly influences their independence and quality of life. The objective of this study was to translate and cross-culturally adapt the Special Interest Group in Amputee Medicine (SIGAM) mobility grades questionnaire in the Persian language and to investigate its psychometric properties. Methods: The SIGAM mobility scale was translated into Persian according to international guidelines for cross-cultural adaptation of self-reported measures and was administered to forty Persian-speaking people with lower limb amputations. Measurement properties were evaluated following COSMIN (COnsensus-based Standards for the Selection of Health Measurement INstruments) recommendations and included internal consistency, test–retest reliability, and hypotheses testing for construct validity by comparing SIGAM mobility grades to the Locomotor Capabilities Index-5 (LCI-5), Houghton scale, Activities-specific Balance Confidence (ABC) scale, the 2-Minute Walk Test (2-MWT), and the Timed Up and Go (TUG). Results: SIGAM mobility scale demonstrated acceptable internal consistency (Kuder-Richardson 20 coefficient = 0.72) and excellent test–retest reliability (Cohen Kappa coefficient = 0.85). Hypothesis testing for construct validity confirmed the good to very good correlations of the Persian SIGAM mobility scale with the LCI-5 ( r = 0.63, 0.55, and 0.63 for the general, basic, and advanced activities components, respectively), Houghton scale ( r = 0.63), ABC scale ( r = 0.73), 2-MWT ( r = 0.50), and TUG test ( r = −0.51). Conclusion: The Persian version of the SIGAM mobility scale demonstrated preliminary evidence of acceptable psychometric properties, supporting its clinical applicability.

Keywords: amputation; artificial limb; mobility; questionnaire (search for similar items in EconPapers)
JEL-codes: I (search for similar items in EconPapers)
Date: 2025
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