Comparison of 3D printing assisted osteotomy of distal femur
and osteotomy of distal femur in the treatment of genu valgus osteoarthritis

doi:10.3969/j.issn.2095-4344.2743

Abstract

Abstract:

BACKGROUND: Closed osteotomy of distal femur has a good effect in the treatment of genu valgus osteoarthritis, but the angle of osteotomy cannot be measured directly during the operation. It is necessary to correct the force line through repeated fluoroscopy and adjustment of osteotomy amount. Improper operation may cause iatrogenic rotation deformity.

OBJECTIVE: To compare the effect of 3D printing assisted osteotomy of distal femur with conventional osteotomy of distal femur in the treatment of knee osteoarthritis.

METHODS: From January 2014 to February 2018, 28 patients (37 knees in total) with osteoarthritis caused by genu valgus aged 28-60 years were enrolled from the First Hospital of Putian City. All patients were randomly divided into two groups. Patients in the control group (11 cases, 16 knees) were treated with conventional closed osteotomy of distal femur combined with locking compression plate implantation. Patients in the experimental group (17 cases, 21 knees) were treated with 3D printing module assisted with closed osteotomy of distal femur combined with locking compression plate. The operation time and times of fluoroscopy were recorded. The KOOS score, femorotibial angle, lateral angle of distal femur and fracture healing time were compared between the two groups before and after treatment. The experiment was approved by the Ethics Committee of the First Hospital of Putian City.

RESULTS AND CONCLUSION: (1) Operation time and the times of fluoroscopy in the experimental group were less than those in the control group (P < 0.001). (2) In the KOOS score, the scores of pain, symptoms, daily life, sports entertainment and quality of life in the two groups were significantly improved after surgery compared with those before surgery (P < 0.01). There was no significant difference in the scores of pain, symptoms, daily life, sports entertainment and quality of life between the two groups (P > 0.05). (3) Femorotibial angle and lateral angle of distal femur in both groups were larger than those before operation (P < 0.01). There was no significant difference between the two groups in femorotibial angle and lateral angle of distal femur (P > 0.05). (4) There was no significant difference in the healing time between the two groups (P > 0.05). (5) The results showed that closed osteotomy of the distal femur can achieve good results in the treatment of genu valgus osteoarthritis. 3D printing technology can simplify the osteotomy operation, reduce the operation time, and the times of fluoroscopy.

Key words: wedge osteotomy of femur, knee osteoarthritis, valgus knee, 3D printing, KOOS score, femorotibial angle, lateral distal femoral angle, control study

CLC Number:

You Fengyuan, Chen Guoxian, Lin zongjin, Xu Guosong, Chen Weiyi, Chen Jinguo. Comparison of 3D printing assisted osteotomy of distal femur and osteotomy of distal femur in the treatment of genu valgus osteoarthritis[J]. Chinese Journal of Tissue Engineering Research, 2020, 24(24): 3780-3785.

Figures/Tables 7

References

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