2008m-319 bonescrews bonescrews(orthopedics) child children complications diagnosis dislocation femoralfractures femur fracturefixation fractures hipdislocation hipjoint infant internal internalfixationinfractures methods patients rehabilitation surgery therapy treatment we855d9971985 we855k88h1999 we860b267t1987 we865d7272008 woundsandinjuries