Background. Bones as an organ are one of the most common targets for tumor metastasis. Currently, the number of patients undergoing surgical treatment for metastatic bone lesions is steadily increasing. In most patients, after surgical treatment, the manifestation of clinical symptoms decreases, primarily pain syndrome, which improves their quality of life. However, it should be noted that the number of patients with bone metastases who underwent revision surgery is also increasing. This article retrospectively analyzes the factors leading to revision after surgical treatment of metastases in long bones. The aim of this study was to identify factors leading to revision after surgical treatment of patients with metastases in long bones. Methods. A retrospective medical records analysis of 247 patients who underwent surgical treatment for metastases in long bones in 2006-2020 was performed. Of these, 33 patients underwent revision surgery. The median age was 62 years. The localization of the primary tumor was as follows: breast cancer — 10 cases, kidney cancer — 13, lung cancer — 3, prostate cancer — 2, rectal cancer — 3, liver cancer and Ewing’s sarcoma with bone metastases — 1 case each. Results. The following factors led to revision surgery: mistakes in preoperative diagnosis (3 patients); postoperative infectious complication (6 patients); dislocation of the endoprosthesis (4 patients); continued growth of solitary metastasis after osteosynthesis (5 cases); aseptic instability after intramedullary osteosynthesis (14 patients); traumatic fracture of the endoprosthesis stem (1 patient). Conclusions. Revision after surgical treatment of metastases in long bones, in addition to postoperative complications, lead to mistakes in diagnosis and incorrect choice of surgical treatment method. To reduce the risk of revision surgical interventions, a multidisciplinary approach is needed with the development of surgical treatment tactics in consultation and the use of specialized scales of oncological prognosis. © 2022, Eco-Vector LLC. All rights reserved.