Overview Study of Anlotinib in Patients With Primary Malignant Bone Tumors Status: Unknown status Trial end date: 2019-12-31 Target enrollment: Participant gender: Summary To evaluate the safety and efficacy of patients with recurrent and metastatic bone tumors. Phase: Phase 2 Details Lead Sponsor: Chia Tai Tianqing Pharmaceutical Group Co., Ltd.Jiangsu Chia-tai Tianqing Pharmaceutical Co.,Ltd