Abstract
Background: Osteoporosis is a common condition, especially affecting the older female population. The ability to predict loss of lumbar height using simple anatomical measurements would be a useful tool.
Aim: To examine the relationship between CID/AS ratio and spinal height. And if there was a correlation between CID/AS ratio and early osteoporosis.
.Methods: A case-control study was designed, 50 post-menopausal women as cases and 50 as controls aged 50-70 were recruited who attending DEXA unit, Eldemerdash hospital, Ain Shams University during the period between June 2016 to Marsh 2017. Arm span (AS) and the costo-iliac distance (CID) was measured as the number of cm between the costal margin and the pelvic ridge of a patient, measured in the midaxillary line, the CID/AS ratio was calculated. The L1–L4 vertebral height of each patient was obtained from dual-energy X-ray absorptiometry (DEXA).
Results: The age of the studied cases, mean age 59.65 and SD 5.25. While the age of studied controls, mean age 57.67 and SD 5.48 (P value 0.07), the study was showed that no significant association between CID/AS ratio and lumber vertebral height, but there was a statistically correlation between CID/AS ratio and DEXA results (T score) with best cut off value CID/AS ratio > 0.058, Sensitivity = 74% Specificity = 60%
Conclusions: The CID/AS ratio is a useful bedside test in identifying patients with osteoporosis.