Translation, Validation, and Cross-Cultural Adaptation of the Patient and Observer Scar Assessment Scale (POSAS) into Persian

Articles in Press

Document Type : RESEARCH PAPER

Authors

1 Joint Reconstruction Research Center, Department of Orthopedic Surgery, Tehran University of Medical Sciences, Keshavarz Boulevard, Tehran, Iran

2 1. Joint Reconstruction Research Center, Department of Orthopedic Surgery, Tehran University of Medical Sciences, Keshavarz Boulevard, Tehran, Iran

3 1. Joint Reconstruction Research Center, Department of Orthopedics, Tehran University of Medical Sciences, Iran

10.22038/abjs.2025.84746.3857

Abstract

Abstract

Objective: This study aimed to translate, culturally adapt, and validate the Patient and Observer Scar Assessment Scale (POSAS) for Persian-speaking populations to ensure its applicability and reliability in clinical and research settings in Iran.

Methods :The cross-cultural adaptation process included forward and backward translations, expert panel reviews, and pre-testing. A total of 60 post-surgical patients participated in the study. Psychometric evaluations included content validity, internal consistency, and test-retest reliability. Content Validity Ratio (CVR) and Content Validity Index (CVI) were calculated, with thresholds set at 0.51 and 0.79, respectively. Reliability was assessed using Cronbach’s alpha coefficients (≥0.7) and test-retest stability over a two-week interval.

Results : The Persian POSAS demonstrated robust psychometric properties. All items exceeded the CVI threshold, achieving strong expert consensus (CVR ≥0.51). Cronbach’s alpha coefficients were 0.88 and 0.81 for the Observer Scar Assessment Scale (OSAS) and Patient Scar Assessment Scale (PSAS), respectively, indicating high internal consistency. Test-retest reliability confirmed stability over time. These results aligned with previous adaptations in other languages, such as Arabic and Italian.

Conclusion : The Persian adaptation of POSAS is a valid and reliable tool for scar assessment, bridging a critical gap in patient-centered care for Persian-speaking populations. This tool facilitates standardized evaluation of scars and supports clinical research. Future studies should explore its responsiveness to therapeutic interventions and applicability across diverse patient demographics.

Keyword:

Scar Assessment; Persian Validation; Cultural Adaptation; Cross-Cultural Research; Psychometric Validation

Level of evidence : Ⅲ

Keywords

Main Subjects

The Archives of Bone and Joint Surgery

Articles in Press, Accepted Manuscript
Available Online from 01 July 2025

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History

  • Receive Date: 24 December 2024
  • Revise Date: 07 March 2025
  • Accept Date: 05 April 2025

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