Fiabilidad interobservador de tres métodos de fotogrametría para medir la lordosis lumbar

Abstract

Background and objectiveRadiography is currently considered the gold standard test for measuring lumbar lordosis. However, it requires special preparation and there is also a risk of exposure to ionizing radiation, which is harmful to health. The cost of the equipment used and exposure to radiation are factors that limit the application of this type of diagnostic test. Photogrammetry can identify distinctive features allowing recognition of angles such as those of lumbar lordosis. Knowledge needs to be increased on reliability based on standards that provide the physiotherapist protocols with reproducible measures that facilitate decision-making related to this condition. Therefore, the objective of this study is to determine the inter-rater reliability of three forms of photogrammetry to measure lumbar lordosis in people with non-specific low back pain. MethodologyAn analysis of lumbar lordosis was carried out with two software programmes (Kinovea and ADiBAS Posture) in a sample of 26 people. Kinovea was used for 2D evaluation by means of the arrow test and the lordotic angle. ADiBAS Posture was used to measure lordosis in 3D. Three assessors made measurements from the photographs using the three measurement protocols defined for the study. ResultsADiBAS Posture analysis showed extremely good CCI, while the arrow and lordotic angle test proved to have good CCIs. On the other hand, the lordotic angle test showed significant differences while the arrow test and the 3D analysis showed no significant differences (p > 0.05). ConclusionsThe 3D analysis and arrow test to determine lumbar lordosis are tests with a particularly good level of reliability.