THE RELATIONSHIP BETWEEN FLAT FOOT WITH Q-ANGLE IN CHILDREN AGE 9-12 YEARS OLD WITH NORMAL IMT IN ELEMENTARY SCHOOL, WEST DENPASAR

Flat foot is a musculoskeletal problem that we often encounter in children. Flat foot is progressive and Flat foot is not only regarded as a static alignment problem of ankle and foot but also a dynamic dysfunction of other lower extremities. Q-angle has been accepted as an important factor in assessing the function of the knee joint. This study aims to determine the relationship between flat foot and Q-angle in children aged 9-12 years with normal BMI at West Denpasar State Elementary School. This research is a cross sectional analytic research that has been studied in March 2018. The research total sample number 60 respondents. The sampling method is consecutive sampling and according to the inclusion criteria until the required number of subjects is met. The sample selection was obtained from BMI examination, next flat foot examination using Wet Footprint Test to determine the degree of severity of flat foot. The respondents then measured Q-angle using a goniometer. The analysis used was bivariate analysis with Spearman's Rho test. The result of bivariate analysis shows which there is a significant correlation between right flat foot with right Q-angle (r = 0.334) and existence of significant relation between left flat foot with left Q-angle ( r = 0.399) in children aged 9-12 years with normal BMI in West Denpasar State Elementary School. Based on the objectives and research results, therefore concluded which there was a statistically significant relationship (p <0.05) between Flat foot and Q-angle in children aged 9-12 years with normal BMI at West Denpasar State Elementary School.  Keywords: Flat foot, Q-angle