TY - JOUR AU - Kim, HJ AU - Song, WS AU - Yoo, JJ AU - Koo, KH AU - Kim, YM DO - doi:10.1302/0301-620X.86BSUPP_II.0860146c UR - https://doi.org/10.1302/0301-620X.86BSUPP_II.0860146c TI - COLLAPSED NONTRAUMATIC OSTEONECROSIS OF THE FEMORAL HEAD UNDER OBSERVATION WITHOUT SPECIFIC TREATMENT T2 - Orthopaedic Proceedings VL - 86-B IS - SUPP_II PY - 2004 SP - 146 EP - 146 ER -