The Analysis of the Normal Rauges of the Hip Motion in Busan Newborns and Infants / 대한정형외과학회잡지

ABSTRACT

Normal ranges of hip motion ia newborns and infants is very important. The newborns and infants, it was very difficult to diffe nciate the limitation of hip motion affected by diseases from the normal ranges of hip motion in newborns and infants whose hips are alwsys flexed, abducted and externally rotated due to intrauterine position. Author measured he normal ranges of hip motion with monthly interval analysis in 400 Busan newborns and infants to note changes of ranges of their hip motion. The result obtained were as follows. 1. The ranges of flexion contracture of hip were varying from 10°–45° (25°±7.93°) in 0–1 month age group to 0°–1 month age group to 0°–20° (9°±4.93°) in 11–12 months age group with average 0–45° (16±7.88°), which menifested gradual decrease in growth. 2. The ranges of abduction were 50°–110° (80°±8.75°), internal rotation, 10°–45° (24±6.46), external rotation, 30°–75°(53°±10.3°) and menifested no changes in growth.