Reliability of the Flexible Ruler in Measuring Lumbar Lordosis among ChildrenCorrespondence Address :
Assistant Professor, Kanachur College of Physiotherapy, Deralakatte, Mangalore, Karnataka, India.
Introduction: Postural alignment is commonly assessed, and the abnormal postures are associated with musculoskeletal disorders. There are different methods for screening spinal column anomalies. The flexible ruler provides a safe, portable, inexpensive and non-invasive way to measure the spinal curvature in clinical and larger population.
Aim: To determine the intra-rater and inter-rater reliability of flexible ruler in measuring lumbar lordosis among children.
Materials and Methods: In this cross-sectional study 81 school children that fulfilled the criteria were recruited with age ranging from 9 to 15 years. Youdas method in standing position was adopted. By using flexible ruler, measurement was taken and without altering the shape of the lumbar curve it was traced in a graph sheet. By using straight ruler, line L and H were drawn by following deep point method. Lumbar lordosis angle was calculated by using the formula, ?=4Arctan 2H/L. Intra-rater reliability: Four measurements were taken by evaluator 1 with a gap of one minute between first 2 measurements and 3 minutes rest then other 2 measurements were taken with a gap of one minute between each. The average of first two and the last two measurements were considered as measurements 1 and 2. Inter rater reliability: Two measurements were taken by evaluator 2 by adapting the same procedure. The averages of two measurements were considered as measurement for evaluator 2. This value was correlated with the value of measurement 1 of evaluator 1. The data was analysed using Intra Class Correlation coefficient (ICC) test.
Results: The results showed high intra-rater reliability (ICC-0.991; p<0.001) for lumbar lordosis angle by flexible ruler and poor inter-rater reliability (ICC-0.241; p=0.11) for lumbar lordosis angle by flexible ruler.
Conclusion: The flexible ruler has shown only intra-rater reliability and additional studies are required to prove inter-rater reliability in measuring lumbar lordosis among children.
Lumbar region, Paediatrics, Range of motion, Spine
Date of Submission: Jun 13, 2020
Date of Peer Review: Jul 24, 2020
Date of Acceptance: Sep 30, 2020
Date of Publishing: Nov 01, 2020
• Financial or Other Competing Interests: None
• Was Ethics Committee Approval obtained for this study? Yes
• Was informed consent obtained from the subjects involved in the study? Yes
• For any images presented appropriate consent has been obtained from the subjects. Yes
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