بررسي شيوع ناهنجاري جلو آمدن سر و رابطه آن با فعاليت نقاط ماشه اي شانه در دانش آموزان دبيرستان هاي شيراز

PREVALENCE OF FORWARD HEAD POSTURE AND ITS RELATIONSHIP WITH ACTIVITY OF TRIGGER POINTS OF SHOULDER REGION IN HIGH SCHOOL STUDENTS OF SHIRAZ

Introduction : Many people refer to physical-therapy clinic due to trigger points pain. It seems abnormal posture of head and neck is an important reasons for this abnormality. The purpose of this study was to investigate the incidence of forward head and its relationship with activity of shoulder trigger points. Methods & Materials : A random sample of 506 subjects (253 girls and 253 boys), ranging from 14-17 years, participated in this study. Evaluation of posture was carried out by plumb line, according to kendall and Mccreary theory. Information about Musculoskeletal system were gained via examination, observation and point finder apparatus. Result: The result shows significant difference between forward head posture (F.H.P) with sex and height (p<%5), which meant that girls showed forward head posture more than boys. Also significant differences was noted between F.H.P and activity of trigger points in vertebral border of scapula, supraspinatus and infraspinatus muscles. There was no significant difference between trigger points in anterior deltoid, superior angle of scapula, lateral border of scapula with F.H.P. Discussion: High incidence of FHP in taller person and in girls is due to tendency of these groups for kyphosis and round shoulder, which promote the activity of trigger points of shoulder.