eng Oriental Scientific Publishing Company Biosciences Biotechnology Research Asia 0973-1245 2018-06-25 15 2 427 430 10.13005/bbra/2646 30009 article Hadi Ghotbi Joshvaghan 1 Farzad Omidi-Kashani 1 Department of Orthopedics Surgery, Mashhad University of Medical Science, Mashhad, Iran. Conservative treatments results for plantar fasciitis patients are inconsistent and therefore manipulating risk factors could be the best option for this disease. To determine risk factors of plantar fasciitis. In a retrospective study, all patients who had plantar fasciitis were enrolled and were compared to control group on their demographic characteristics. The angle of dorsi-flexion was recorded by examination of orthopedic surgeon, history of pregnancy and time of standing in one day. Plantar curvature was measured by orthopedic surgeon. Female sex percentage was significantly higher in PF group than male sex (p=0.007), but the difference in sex was not significant between PF and control groups (p=0.22). Body mass index (BMI) above 30 was significantly higher in PF group compare to control group (p=0.013). Presence of bony spur was significantly higher in PF group compare to control group (p=0.03). There were significant differences in foot curve degree in patients between PF and control groups (p=0.037). Odds ratio (OR) of plantar fasciitis was 1.65 times in patients with bony spur. History of pregnancy increase OR of plantar fasciitis 1.37 times (OR:1.37; 95% CI:1.20-1.82, p=0.017). Plantar fasciitis is associated with higher BMI, pregnancy, bony spur and foot curve cavus. However, it seems that a predisposing foot structural factor should also be accompanied with these risk factors. https://www.biotech-asia.org/vol15no2/plantar-fasciitis-risk-factorsin-normal-population/ Age-Related Problems; Ankle; Foot; Heel; Plantar fasciitis; Rear foot