Clinical study on cannulated screw combined with allogeneic fibula internal fixation in the treatment of young and middle-aged patients with femoral neck fractures complicated with femoral head collapse due to osteonecrosis

Abstract

Objective To study the clinical effects of cannulated screw combined with allogeneic fibula internal fixation on young and middle-aged patients with femoral neck fractures complicated with femoral head collapse due to osteonecrosis. Methods From April 2014 to September 2016, 64 young and middle-aged patients with femoral neck fractures complicated with femoral osteonecrosis were randomized divided into observation group (n=32) and control group (n=32) by the random number table method. The control group was treated by cannulated screw internal fixation alone, while the observation group was treated by cannulated screw combined with allogeneic fibula internal fixation. The Harris score, quality of life score, FPS-R pain score and incidence of late postoperative collapse were compared between the two groups. Results After treatment, SF-36 score and Harris score in the observation group (80.1±5.4, 92.4±6.3) were significantly higher than those in control group (61.3±4.1, 80.4±4.2), P<0.05. While FPS-R pain score (1.1±0.4) was significantly lower than that in control group (3.7±1.2), and the incidence of late postoperative collapse (6.2%) was significantly lower than that in the control group (25.0%, P<0.05). Conclusions The application of cannulated screw combined with allogeneic fibula internal fixation in young and middle-aged patients with femoral neck fractures complicated with femoral osteonecrosis, can significantly improve the quality of life, improve Harris score, alleviate patients’ pain, and prevent femoral collapse. It has positive clinical application effect. Key words: Cannulated screw; Allogeneic fibula; Femoral neck fracture; Osteonecrosis; Collapse