ABSTRACT
The normal range of hip motion that used in medical therapy, are based on the data from western countries. The purpose of this study is to find out the normal angles of active range of motion of hip joints in Thais. Five hundred subjects were divided into three age groups : 25 – 39 years, 40 – 59 years and 60 – 69 years. The study was perfowed in the volunteers who had normal joint and had no symptom of hip pain for a period of six months prior to the study. The universal goniometer was used in measuring all directions of hip movement. The average degrees values of hip movements were : flexion = 111.91o, extension = 18.01o, abduction = 38.16o, adduction = 24.88o, medial rotation = 34.73o and lateral rotation = 34.94o. There was no significant differences of range of motions for hip extension, hip adduction and hip abduction between right and left hips (p > 0.05). Range of hip flexion and hip rotation were found significantly different between right and left hips (p < 0.05).