Validity and Absolute Reliability of the Cobb Angle in Idiopathic Scoliosis with TraumaMeter Software

José Hurtado-Avilés, Fernando Santonja-Medina, Vicente J. León-Muñoz, Pilar Sainz de Baranda, Mónica Collazo-Diéguez, Mercedes Cabañero-Castillo, Ana B. Ponce-Garrido, Victoria Eugenia Fuentes-Santos, Fernando Santonja-Renedo, Miriam González-Ballester, Francisco Javier Sánchez-Martínez, Pietro Gino Fiorita, Jose Manuel Sanz-Mengibar, Joaquín Alcaraz-Belzunces, Vicente Ferrer-López and Pilar Andújar-Ortuño
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José Hurtado-Avilés: Sports & Musculoskeletal System Research Group (RAQUIS), University of Murcia, 30100 Murcia, Spain
Fernando Santonja-Medina: Sports & Musculoskeletal System Research Group (RAQUIS), University of Murcia, 30100 Murcia, Spain
Vicente J. León-Muñoz: Department of Orthopaedic Surgery and Traumatology, Hospital General Universitario Reina Sofía, 30003 Murcia, Spain
Pilar Sainz de Baranda: Sports & Musculoskeletal System Research Group (RAQUIS), University of Murcia, 30100 Murcia, Spain
Mónica Collazo-Diéguez: Sports & Musculoskeletal System Research Group (RAQUIS), University of Murcia, 30100 Murcia, Spain
Mercedes Cabañero-Castillo: Department of Rehabilitation Sciences and Physiotherapy, General Hospital, Almansa, 02640 Albacete, Spain
Ana B. Ponce-Garrido: Department of Rehabilitation Sciences and Physiotherapy, General Hospital, Almansa, 02640 Albacete, Spain
Victoria Eugenia Fuentes-Santos: Sports & Musculoskeletal System Research Group (RAQUIS), University of Murcia, 30100 Murcia, Spain
Fernando Santonja-Renedo: “La Vega Lorenzo Guirao” Hospital, 30530 Cieza, Spain
Miriam González-Ballester: Medicine Faculty, University of Murcia, 30100 Murcia, Spain
Francisco Javier Sánchez-Martínez: Medicine Faculty, University of Murcia, 30100 Murcia, Spain
Pietro Gino Fiorita: Medicine Faculty, University of Murcia, 30100 Murcia, Spain
Jose Manuel Sanz-Mengibar: Sports & Musculoskeletal System Research Group (RAQUIS), University of Murcia, 30100 Murcia, Spain
Joaquín Alcaraz-Belzunces: Medicine Faculty, University of Murcia, 30100 Murcia, Spain
Vicente Ferrer-López: Department of Physiotherapy, Faculty of Medicine, University of Murcia, 30100 Murcia, Spain
Pilar Andújar-Ortuño: Sports & Musculoskeletal System Research Group (RAQUIS), University of Murcia, 30100 Murcia, Spain

IJERPH, 2022, vol. 19, issue 8, 1-12

Abstract: The Cobb angle value is a critical parameter for evaluating adolescent idiopathic scoliosis (AIS) patients. This study aimed to evaluate a software’s validity and absolute reliability to determine the Cobb angle in AIS digital X-rays, with two different degrees of experienced observers. Four experts and four novice evaluators measured 35 scoliotic curves with the software on three separate occasions, one month apart. The observers re-measured the same radiographic studies on three separate occasions three months later but on conventional X-ray films. The differences between the mean bias errors (MBE) within the experience groups were statistically significant between the experts (software) and novices (manual) ( p < 0.001) and between the novices (software) and novices (manual) ( p = 0.005). When measured with the software, the intra-group error in the expert group was MBE = 1.71 ± 0.61° and the intraclass correlation coefficient (ICC (2,1)) = 0.986, and in the novice group, MBE = 1.9 ± 0.67° and ICC (2,1) = 0.97. There was almost a perfect concordance among the two measurement methods, ICC (2,1) = 0.998 and minimum detectable change (MCD95) < 0.4°. Control of the intrinsic error sources enabled obtaining inter- and intra-observer MDC95 < 0.5° in the two experience groups and with the two measurement methods. The computer-aided software TraumaMeter increases the validity and reliability of Cobb angle measurements concerning manual measurement.

Keywords: spine; adolescent idiopathic scoliosis; Cobb angle; measurement; software applications; validity; reliability (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
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