Osteoporotic vertebral compression fractures with intraosseous vacuum phenomena could cause persistent back pains in patients, even after receiving conservative treatment. The aim of this study was to evaluate the efficacy of using high-viscosity bone cement via bilateral percutaneous vertebroplasty in treating patients who have osteoporotic vertebral compression fractures with intraosseous vacuum phenomena.Twenty osteoporotic vertebral compression fracture patients with intraosseous vacuum phenomena, who received at least 2 months of conservative treatment, were further treated by injecting high-viscosity bone cement via bilateral percutaneous vertebroplasty due to failure of conservative treatment. Treatment efficacy was evaluated by determining the anterior vertebral compression rates, visual analog scale (VAS) scores, and Oswestry disability index (ODI) scores at 1 day before the operation, on the first day of postoperation, at 1-month postoperation, and at 1-year postoperation.Three of 20 patients had asymptomatic bone cement leakage when treated via percutaneous vertebroplasty; however, no serious complications related to these treatments were observed during the 1-year follow-up period. A statistically significant improvement on the anterior vertebral compression rates, VAS scores, and ODI scores were achieved after percutaneous vertebroplasty. However, differences in the anterior vertebral compression rate, VAS score, and ODI score in the different time points during the 1-year follow-up period was not statistically significant (P > 0.05).Within the limitations of this study, the injection of high-viscosity bone cement via bilateral percutaneous vertebroplasty for patients who have osteoporotic vertebral compression fractures with intraosseous vacuum phenomena significantly relieved their back pains and improved their daily life activities shortly after the operation, thereby improving their life quality. In this study, the use of high-viscosity bone cement reduced the leakage rate and contributed to their successful treatment, as observed in patients during the 1-year follow-up period.

Background Anterior cruciate ligament (ACL) tibial insertion avulsion fractures cause instability of the knee joint, and minimally invasive techniques are the first choice for treating this type of intra-articular injury. The aim of this study was to investigate the clinical effect of a minimally invasive technique which treated ACL tibial insertion avulsion fractures under arthroscopy by a single tunnel with a double-strand suture anchor. Methods A retrospective analysis was performed on 29 patients with ACL tibial insertion avulsion fractures treated with this minimally invasive technique from January 2014 to June 2018. All patients were followed up for 12 months. X-ray were taken intermittently to determine fracture reduction and healing. During the follow-up period, CT and MRI were performed to evaluate reduction and healing. The Lachman test and ADT were performed by the same doctor to determine knee joint stability. The IKDC subjective score were used to evaluate postoperative knee function recovery Results All patients healed well without infection、fracture nonunion and instability. The preoperative IKDC subjective score was 51.24 ± 3.16; the IKDC subjective score at the last follow-up was 92.93 ± 2.59 (P < 0.05). Conclusions Within the limitations of this study, a single tunnel with a double-strand suture anchor under arthroscopy for the treatment of ACL tibial insertion avulsion fracture was a simple procedure. The procedure caused minimal trauma,had firm fixation, ensured quick recovery and provided satisfactory clinical results.