Analysis Of Curative Effect Of Minimally Invasive And Conventional Incision Posterolateral Hip Arthroplasty

Objective:To analyze the difference of the clinical efficacy of treatment of osteonecrosis of the femoral head with posterolateral minimally invasive hip arthroplasty and conventional:incision hip arthroplasty.Methods:We collected 106 cases(113 hips)who had been diagnosed as terminal osteonecrosis of the femoral head in the first affiliated hospital of Hunan normal university after the total hip arthroplasty described by the department of orthopedics from January 2010 to July 2017.Based on the surgical methods,these cases were divided into two groups.The group A is posterolateral minimally invasive hip arthroplasty group,and group B is conventional incision hip arthroplasty group.Related data were collected.Measurement data were expressed as mean ± standard deviation,and data were analyzed by using Stata statistical software.Results:The average incision length in group A was 6.5(5-10)cm,the average incision length in group B was 13.7(11~20)cm,P=0.004;The average intraoperative blood loss in group A was 350.0(150?3400)mL.The average intraoperative blood loss:in group B was 1090.4(200-3300)mL.Average drainage volume in group A:534.7(0?1640)mL.Average drainage volume in group B:721.4(200?3300)mL;The mean operation time in group A:65(45-220)min,mean operation time in group B:85(50-320)min.The mean blood transfusion volume in group A was 240(0-3300)mL,and the average blood transfusion volume in group B was 1146(300-3000)mL;106 patients were followed up for 3 to 90 months(average 32.3 months).In group A,the average postoperative Harris score was 89.3(75.2-93.2).In group B,the average postoperative Harris score was 85.7(72.1-92.5).In group A,the three-month-postoperative VAS score was 2(1-4)points.In group B,the three-month-postoperative VAS scores were 3(1-5)points.There was a statistically significant difference in these aspects.The average length of stay(LOS)in group A was 21.7(9 to 120)days,and the average length of stay(LOS)in group B was 25.2(4 to 155)days,P>0.05.The incidence of postoperative complications in group A was 8.4%.The incidence of complications in group B was 12.8%,P>0.05.There was no statistical difference in hospitalization time and postoperative complications.Conclusion:Minimally invasive posterolateral hip arthroplasty and conventional posterolateral hip arthroplasty can effectively improve hip function and reduce hip pain.They are both effective treatments of OFHN.Minimally invasive posterolateral hip arthroplasty compared with conventional posterolateral hip arthroplasty,with reduced intraoperative blood loss,lower blood transfusion rate,reduce hospital costs,can help patients with the characteristics of rehabilitation.Minimally invasive posterior lateral arthroplasty can be considered when the surgeon is skilled in the surgical technique and the patient condition meets the indication.