Objective To explore the design of personalized osteotomy angle-assisted Chevron osteotomy for hallux valgus based on mimics software.Methods A total of 60 patients with mild to moderate hallux valgus who underwent Chevron osteotomy from January 2019 to June 2021 were divided into a computer osteotomy group(group A)and an empirical osteotomy group(group B)according to different preoperative design plans:30 patients(30 feet)in group A,including 5 male feet and 25 female feet,aged(58.73±8.37)years,with an intermetatarsal angle(IMA)of(14.80°±3.10°)in the weight-bearing position and an AOFAS score of(59.00±4.19).A 3D printed osteotomy guide was used to design the operation plan before surgery for personalized osteotomy treatment.The group B included 30 patients(6 males and 24 females)with an age of(58.53±6.16)years.The weight-bearing IMA was(14.97°±3.21°)and the AOFAS score was(59.90±9.39).Only the weight-bearing X-ray was used before surgery,and osteotomy was performed according to surgical experience.The improvement of the weight-bearing IMA and hallux valgus angle(HVA)after surgery was compared between the two groups.The AOFAS score was filled in during the postoperative follow-up to evaluate the postoperative foot and ankle function.Results The 60 patients were followed up for 8-12 months.The weight-bearing X-ray after surgery showed that the IMA of group A was(4.13°±1.48°),the IMA of group B was(5.27°±1.76°),the HVA of group A was(10.20°±1.37°),and the HVA of group B was(11.10°±1.94°).The differences between the two groups were statistically significant(P<0.05).The AOFAS scores of group A and group B were(83.57±5.34)and(79.67±4.12)respectively,and the difference between the two groups was statistically significant(P<0.05).Conclusion 3D printing technology is an individualized and digital method for surgical planning.The individualized osteotomy plan formulated by 3D printing technology for the treatment of mild to moderate hallux valgus can better correct the IMA angle of patients and improve the postoperative foot function compared with the traditional experience-based surgical plan.
万方数据
维普
