Clinical application of 3D-printed osteotomy guides total knee arthroplasty in patients with knee osteoarthritis
Objective:To evaluate the effectiveness of 3D-printed osteotomy guides in total knee arthroplasty(TKA)for patients with knee osteoarthritis(KOA).Methods:This study was conducted on 110 KOA patients treated at the First Hospital of Zhangjiakou City from January 2022 to April 2023.The patients were randomly divided into two groups:the traditional surgery group(55 patients),in which conventional surgical instruments were used for osteotomy,and the 3D printing group(55 patients),in which 3D-printed osteotomy guides were used.Pre-and postoperative VAS scores,perioperative indicators(operation duration,intraoperative blood loss,24-hour postoperative drainage volume,length of hospital stay),postoperative complications,knee kinematics,and patient satisfaction were compared between the two groups.Results:There was no significant difference in the preoperative VAS score between the two groups(P>0.05).At one week after surgery,the VAS score was significantly lower in the 3D printing group than in the traditional surgery group(P<0.05).Compared with the traditional surgery group,the 3D printing group had significantly shorter operation duration,less intraoperative blood loss,and lower postoperative 24-hour drainage volumes(all P<0.05).There was no statistically significant difference in the length of hospital stay between the two groups(P>0.05).During the 3-month postoperative follow-up,the overall incidence of complications was significantly lower in the 3D printing group(P<0.05).At 1 and 3 months post-surgery,the 3D printing group presented significantly lower varus-valgus angles and internal-external rotation angles and significantly greater flexion-extension angles than the traditional surgery group did(all P<0.05).Patient satisfaction at one year postoperatively was significantly greater in the 3D printing group(P<0.05).Conclusions:Using 3D-printed osteotomy guides in TKA for KOA patients can shorten the operation duration,effectively relieve pain,reduce the incidence of postoperative complications,enhance knee function recovery,and improve patient outcomes.