Cross-cultural adaptation and validation of the Romanian International Knee Documentation Committee-subjective knee form

Adrian Todor; Dinu Vermesan; Horia Haragus; Jenel M Patrascu Jr; Bogdan Timar; Dan I Cosma

doi:10.7717/peerj.8448

Cross-cultural adaptation and validation of the Romanian International Knee Documentation Committee-subjective knee form

PeerJ. 2020 Feb 3:8:e8448. doi: 10.7717/peerj.8448. eCollection 2020.

Authors

Adrian Todor¹, Dinu Vermesan², Horia Haragus², Jenel M Patrascu Jr², Bogdan Timar³, Dan I Cosma¹

Affiliations

¹ Department of Orthopedics, Traumatology and Pediatric Orthopedics, University of Medicine and Pharmacy of Cluj-Napoca, Cluj-Napoca, Romania.
² Department of Orthopedics and Trauma, University of Medicine and Pharmacy of Timisoara, Timisoara, Timis, Romania.
³ Department of Functional Sciences, University of Medicine and Pharmacy of Timisoara, Timisoara, Timis, Romania.

Abstract

Aim: We aimed to translate and cross-culturally adapt the International Knee Documentation Committee-subjective knee form (IKDC) in Romanian.

Method: The original (US) IKDC-subjective knee form was translated according to recommended guidelines. Validity was tested using Spearmans's correlation coefficient between score sand test-retest reproducibility. Reliability and internal consistency were determined using Cronbach's alpha coefficient and intraclass correlation coefficient (ICC).

Results: A total of 106 data sets were available for processing. The average age was 52 years and the male to female ratio was 40:66. Fifty-five subjects repeated the form after an average of 4 days. There were no floor or ceiling effects (range 3.4-74.7). There was a strong correlation between the first and repeated administration of the IKDC-subjective knee form (r = 0.816, n = 50) and moderate compared to Tegner-Lysholm knee rating scale (r = 0.506, n = 102), KOOSJR (Knee disability and Osteoarthritis Outcome Score for Joint Replacement, r = - 0.622, n = 96), EuroqolEQ-5D-5L Index (r = 0.633, n = 100) and visual analogue scale VAS (r = 0.484, n = 99). Internal consistency was moderate with Cronbach's alpha 0.611 (n = 102) and ICC 0.611 for average measures (95% CI 0.493-0.713).

Conclusion: The Romanian translation of the IKDC-subjective knee form is a valid, consistent and reproducible outcome measure in patients with knee pain and dysfunction.

Keywords: Anterior cruciate ligament; Arthroscopy; International knee documentation committee; Knee joint; Lysholm knee score; Meniscectomy; Osteoarthritis; Patient reported outcome measures.

Grants and funding

The authors received no funding for this work.