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Current Issue - November 2017, Volume 11, Issue No. 3

Official Journal of Malaysian Orthopaedic Association and ASEAN Orthopaedic Association

Prevalence Rate of Adolescent Idiopathic Scoliosis: Results of School-based Screening in Surabaya, Indonesia


Introduction: Scoliosis is a lateral spinal deformity of 10 degrees or more, resulting in a C-shaped or S-shaped curve of the spine. Information about adolescent idiopathic scoliosis (AIS) prevalence rate is important not only for paediatric health care planning strategy but also for parent's awareness. This study aims to find the suitable inclination cut-off angle and the prevalence rate of AIS in Surabaya, Indonesia.

Materials and Methods: This is a descriptive cross- sectional study conducted in 2010. We performed stratified random sampling of 784 Elementary and Junior High School students in Surabaya between 9-16 years of age. Scoliosis screening was performed by the Adam's forward bending test (FBT). The students with positive FBT were measured for the inclination angle with scoliometer, and then subjected to radiologic examination. Prevalence rate, gender ratio, and the cut-off point value of inclination angle were determined by a descriptive statistics analysis.

Results: Adam's forward bending test was positive in 50 students (6,37%). Among them, 23 students (2,93%) four males and 19 females had Cobb angle of ≥10°. The 5° cut- off point value of inclination angle had a 95.6% sensitivity, an 18.5% specificity, a 50% positive predictive value (PPV), and a 83.33% negative predictive value (NPV); while the 7° cut-off point had a 78.26% sensitivity, a 88.88% specificity, a 85.7% PPV, and a 82.7% NPV.

Conclusion: The prevalence rate of AIS in Surabaya is 2.93% and the 7° cut-off point of inclination angle is suitable for school-based screening.

Abstract   |   Reference

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The Malaysian Orthopaedic Journal is a peer-reviewed journal that is published three times a year in both print and electronic online version. The purpose of this journal is to publish original research studies, evaluation of current practices and case reports in various subspecialties of orthopaedics and traumatology, as well as associated fields like basic science, biomedical engineering, rehabilitation medicine and nursing.

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