Objective This study aims to investigate the clinical value of percutaneous vertebroplasty (PVP)combined with strontium-89 (89 Sr)on patients with spinal malignant tumor.Methods Seventy four patients who were diagnosed as spinal malig-nant tumor were divided into two groups randomly.37 patients of the control group were treated by PVP only,and 37 patients of joint group were treated by PVP and 89 Sr together.Then the clinical effect of the joint group and control group was compared after treatment.Results After treatment,the quality of life,ratio of pain relief,clinical effect and survival time in joint group were dis-tinctly better than control group (P <0.05).Conclusion PVP combined with 89 Sr can be an effective and safe treatment for pa-tients with spinal malignant tumor.

Objective To investigate the treatment results for different regions of posterior cruciate ligament ganglion cyst by surgery.Methods From January 2011 to September 2016,17 patients with posterior cruciate ligament ganglion cysts of the knee were involved in this study.5 cases were located on the femoral side of the ligament (upper 1/3),8 cases were in the middle,and 4 cases were located in the tibia side (lower 1/3),15 cases were operated and 2 were not.A total of 13 cases in the upper 2/3 of the ligament were resected by the anterior two approaches through arthroscopy.two of which were resected by the posterior capsule.2 cases of the tibial lateral cysts were resected by posterior approach.Lysholm scoring system was used to evaluate the knee function before and after operation,and Glasgow curative effect system was used to evaluate the final follow-up results.Results A follow-up 6-24 months in an average of (12.6 ± 3.2) months shows no sign of recurrence at the last follow-up,all patients had no complications such as infection,ligament relaxation,et al.Lysholm score was improved from 57.5 ± 5.2 preoperatively to 92.5 ± 3.6 postoperatively,and the statistical difference is very significant (P ＜ 0.05).And curative effect was evaluated well by Glasgow system.Conclusions Arthroscopic surgery is an effective measure in the treatment of postior cruciate ligament (PCL) ganglion cysts.The upper part of the ligament can be resolved through the anterior approach,and the lower part should be followed by the posterior approach,and if necessary,open the way to handle the external part of the joint.