Arthroscopic minimally invasive Kirschner wire tension band internal fixation in the treatment of patellar fractures

Abstract

Objective To investigate the clinical effect of minimally invasive Kirschner wire tension band internal fixation under arthroscopy in the treatment of patellar fracture. Methods From March 2016 to April 2018, ninety patients with patellar fracture admitted to the Department of Orthopedics, Lin Xi Hospital of Kailuan General Hospital were divided into minimally invasive group (58 cases) and control group (32 cases) according to different operative methods.The control group received traditional open reduction and Kirschner wire tension band internal fixation.Minimally invasive group received arthroscopic minimally invasive Kirschner wire tension band internal fixation.The operation status, joint function recovery and VAS scores were compared between the two groups. Results The amount of blood loss, hospitalization time and fracture healing time in minimally invasive group were significantly less than those in control group ((48.7±13.6) ml vs.(85.5±12.3) ml, t=12.7, P<0.05; (12.5±2.8) d vs.(14.8±1.4) d, t=4.35, P<0.05; (11.2±1.3) weeks vs.(15.4±2.2) weeks, t=11.40, P<0.05). After 6 months of follow-up, the VAS score of the two groups decreased with the time (the VAS score of the minimally invasive group decreased from (7.2±1.1) points preoperatively to (0.9±0.2) points at 6 months postoperatively, and that of the control group decreased from (7.3±1.2) points preoperatively to (1.1±0.3) at 6 months postoperatively). There was a significant difference between the two groups (F grouP=77.87, P<0.05). The VAS score of both groups decreased with time (Ftime=263.47, P<0.05). The decrease of VAS score in the minimally invasive group was significantly larger than that in the control group (F interaction=28.63, P<0.05). Conclusion Arthroscopic minimally invasive Kirschner wire tension band internal fixation for patellar fracture has better clinical effect and less trauma. Key words: Patellar Fracture; Arthroscopy; Kirschner Wire; Tension Band; Internal Fixation; Curative Effect