Tuyển tập các báo cáo nghiên cứu về hóa học được đăng trên tạp chí sinh học quốc tế đề tài : Proximal screws placement in intertrochanteric fractures treated with external fixation: comparison of two different techniques | Vekris et al. Journal of Orthopaedic Surgery and Research 2011 6 48 http content 6 1 48 JOURNAL OF ORTHOPAEDIC SURGERY AND RESEARCH RESEARCH ARTICLE Open Access Proximal screws placement in intertrochanteric fractures treated with external fixation comparison of two different techniques Marios D Vekris Marios G Lykissas Gregory Manoudis Alexandros N Mavrodontidis Christos D Papageorgiou Anastasios V Korompilias Ioannis P Kostas-Agnantis and Alexandros E Beris Abstract Background To compare two different techniques of proximal pin placement for the treatment of intertrochanteric fractures in elderly patients utilizing the Orthofix Pertrochanteric Fixator. Methods Seventy elderly high-risk patients with an average age of 81 years were treated surgically for intertrochanteric fracture resulting from a low energy trauma. Patients were randomly divided in two groups regarding to the proximal pin placement technique. In Group A the proximal pins were inserted in a convergent way while in Group B were inserted in parallel. Results All fractures healed uneventfully after a mean time of 98 days. The fixator was well accepted and no patient had significant difficulties while sitting or lying. The mean VAS score was in group A and in group B. At 12 months after surgery in group A the average Harris Hip Score and the Palmer and Parker mobility score was 67 and respectively. In group B the average Harris Hip Score and the Palmer and Parker mobility score was 62 and respectively. No statistically significant difference was found regarding the functional outcome. The mean radiographic exposure during pin insertion in Group A and Group B was 15 and 6 seconds respectively. The difference between the two groups regarding the radiographic exposure was found to be significant. Conclusion Proximal screw placement in a parallel way is simple with significant less radiation exposure and shorter intraoperative duration. In addition fixation stability is
