Though Brody’s navicular drop test is a clinical, valid predictor of navicular height to characterize arch of human foot, normative values have not been yet provided and also the effect of demographic variables on navicular drop were not explored. The purpose of this study was to find out the normalative values of navicular drop of Brody’s Navicular drop test. And to correlate the effect of age, gender, BMI and foot length on navicular drop. 112 healthy subjects, 51 males and 61 females of age 20 (19, 22) years, height 1.6 (1.5, 1.7) m, weight 55 (47.25, 62) kg. ND measurement of both feet were taken, all demographic data were measured to see any correlation exist with ND. Results revealed that normative median value for NDRT for male was found to be 6 (3, 8) and female was found to be 4 (3, 5). Normative median value for NDLT for male and female was found to be 4 (3, 6) and 3 (2, 5). Spearman’s rho (ρ) for age versus NDRT(right foot) was found to be 0.15 (p=0.1), age versus NDLT (left foot) was found to be 0.17 (p=0.07). Spearman’s rho (ρ) for height versus NDRT and NDLT were found to be 0.07 (p=0.45) and 0.15 (p=0.1) respectively. Spearman’s rho for weight versus NDRT and NDLT were found to be 0.2 (p=0.04) and 0.32 (p=0.001) respectively. Spearman’s rho for BMI versus NDRT and NDLT were found to be 0.2 (p=0.03) and 0.25 (p=0.01) respectively. Spearman’s rho for mean foot length (MFL) versus NDRT and NDLT were found to be 0.08 (p=0.4) and 0.19 (p=0.048) respectively. The normative values of ND for male and female were given. All the demographic parameters did not show co-relation with ND except a low co-relation with BMI with ND and a borderline statistical significance with MFL and NDLT was demonstrated.
