[Subtype classification of Garden III femoral neck fractures in the elderly based on frontal Garden index and its clinical significance]. - Hou HT; Li WY; Liu YW; Chen K; Tong ZF; Hai Y; Wu YX; Ma WL; Ye Y; Tian KW; Chen WL; Wang KZ (Zhongguo gu shang = China journal of orthopaedics and traumatology, 2016)