Clinical value of CT-based patient-specific 3D preoperative design combined with conventional instruments in primary total knee arthroplasty: a propensity score-matched analysis

Abstract Purpose To evaluate the operation and early clinical effect in primary total knee arthroplasty (TKA) about the novel combination of CT-based patient-specific three-dimensional (3D) preoperative design and conventional osteotomy instruments, compared with the conventional method. Methods Aft...

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Main Authors: Kai Lei, Li Ming Liu, Yi Xiang, Xin Chen, Hua Quan Fan, Yang Peng, Jiang Ming Luo, Lin Guo
Format: Article
Language:English
Published: BMC 2020-12-01
Series:Journal of Orthopaedic Surgery and Research
Subjects:
Online Access:https://doi.org/10.1186/s13018-020-02123-5
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author Kai Lei
Li Ming Liu
Yi Xiang
Xin Chen
Hua Quan Fan
Yang Peng
Jiang Ming Luo
Lin Guo
author_facet Kai Lei
Li Ming Liu
Yi Xiang
Xin Chen
Hua Quan Fan
Yang Peng
Jiang Ming Luo
Lin Guo
author_sort Kai Lei
collection DOAJ
description Abstract Purpose To evaluate the operation and early clinical effect in primary total knee arthroplasty (TKA) about the novel combination of CT-based patient-specific three-dimensional (3D) preoperative design and conventional osteotomy instruments, compared with the conventional method. Methods After a 1:1 propensity score-matching (PSM), patients were matched to the novel technique group and the conventional group, 109 cases in each group. The conventional group adopted a preoperative design based on a full-length radiograph (FLX) and received TKA with conventional osteotomy instruments. The novel technique group used a CT-based patient-specific 3D preoperative design combined with conventional osteotomy instruments; during the surgery, the femoral entry point, femoral valgus osteotomy angle, the fix point of tibial plateau extramedullary guide pin, and the position of tibial extramedullary positioning rod were accurately selected according to the preoperative 3D design to ensure accurate intraoperative implementation. The lower limb alignment, component position, operation time, tourniquet time, hospital stay, blood loss volume, incidence of postoperative complications, visual analog scale (Vas) score, and New Knee Society Score System (NEW-KSS) at 1 day before operation and 1, 6, and 12 months after operation were recorded and compared. Results The novel technique group was significantly better than the conventional group in controlling lateral tibial component angle (LTC) (P < 0.001), and the novel technique group had lower percentages of hip-knee-ankle angle (HKA) outliers (P < 0.001) and overcorrection (P = 0.003). The operation time, tourniquet time, and hospital stay of the novel technique group was shorter (P < 0.05). In 1 month after the operation, the novel technique group achieved a significantly better VAS score (P < 0.05), but a similar NEW-KSS score (P > 0.05) when compared with the conventional group. But in 6 and 12 months after surgery, no statistical differences were seen in the above two scores (P > 0.05). Conclusion The novel technique of CT-based patient-specific 3D preoperative design combined with conventional instruments can improve the accuracy of osteotomy in primary total knee arthroplasty, with benefits of significantly reducing pain and rapid recovery during the early postoperative period, but having no obvious effect on outcome after a 1-year follow-up.
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spelling doaj.art-e152abb5f4e540388e613149a45ab1312022-12-22T04:21:17ZengBMCJournal of Orthopaedic Surgery and Research1749-799X2020-12-0115111210.1186/s13018-020-02123-5Clinical value of CT-based patient-specific 3D preoperative design combined with conventional instruments in primary total knee arthroplasty: a propensity score-matched analysisKai Lei0Li Ming Liu1Yi Xiang2Xin Chen3Hua Quan Fan4Yang Peng5Jiang Ming Luo6Lin Guo7Center for Joint Surgery, Southwest Hospital, Third Military Medical UniversityCenter for Joint Surgery, Southwest Hospital, Third Military Medical UniversityDepartment of Orthopaedics, Logistic Support Forces of the Chinese PLA 985 HospitalCenter for Joint Surgery, Southwest Hospital, Third Military Medical UniversityCenter for Joint Surgery, Southwest Hospital, Third Military Medical UniversityCenter for Joint Surgery, Southwest Hospital, Third Military Medical UniversityCenter for Joint Surgery, Southwest Hospital, Third Military Medical UniversityCenter for Joint Surgery, Southwest Hospital, Third Military Medical UniversityAbstract Purpose To evaluate the operation and early clinical effect in primary total knee arthroplasty (TKA) about the novel combination of CT-based patient-specific three-dimensional (3D) preoperative design and conventional osteotomy instruments, compared with the conventional method. Methods After a 1:1 propensity score-matching (PSM), patients were matched to the novel technique group and the conventional group, 109 cases in each group. The conventional group adopted a preoperative design based on a full-length radiograph (FLX) and received TKA with conventional osteotomy instruments. The novel technique group used a CT-based patient-specific 3D preoperative design combined with conventional osteotomy instruments; during the surgery, the femoral entry point, femoral valgus osteotomy angle, the fix point of tibial plateau extramedullary guide pin, and the position of tibial extramedullary positioning rod were accurately selected according to the preoperative 3D design to ensure accurate intraoperative implementation. The lower limb alignment, component position, operation time, tourniquet time, hospital stay, blood loss volume, incidence of postoperative complications, visual analog scale (Vas) score, and New Knee Society Score System (NEW-KSS) at 1 day before operation and 1, 6, and 12 months after operation were recorded and compared. Results The novel technique group was significantly better than the conventional group in controlling lateral tibial component angle (LTC) (P < 0.001), and the novel technique group had lower percentages of hip-knee-ankle angle (HKA) outliers (P < 0.001) and overcorrection (P = 0.003). The operation time, tourniquet time, and hospital stay of the novel technique group was shorter (P < 0.05). In 1 month after the operation, the novel technique group achieved a significantly better VAS score (P < 0.05), but a similar NEW-KSS score (P > 0.05) when compared with the conventional group. But in 6 and 12 months after surgery, no statistical differences were seen in the above two scores (P > 0.05). Conclusion The novel technique of CT-based patient-specific 3D preoperative design combined with conventional instruments can improve the accuracy of osteotomy in primary total knee arthroplasty, with benefits of significantly reducing pain and rapid recovery during the early postoperative period, but having no obvious effect on outcome after a 1-year follow-up.https://doi.org/10.1186/s13018-020-02123-5Total knee arthroplastyPropensity score matchingThree-dimensionalAlignmentVASKSS
spellingShingle Kai Lei
Li Ming Liu
Yi Xiang
Xin Chen
Hua Quan Fan
Yang Peng
Jiang Ming Luo
Lin Guo
Clinical value of CT-based patient-specific 3D preoperative design combined with conventional instruments in primary total knee arthroplasty: a propensity score-matched analysis
Journal of Orthopaedic Surgery and Research
Total knee arthroplasty
Propensity score matching
Three-dimensional
Alignment
VAS
KSS
title Clinical value of CT-based patient-specific 3D preoperative design combined with conventional instruments in primary total knee arthroplasty: a propensity score-matched analysis
title_full Clinical value of CT-based patient-specific 3D preoperative design combined with conventional instruments in primary total knee arthroplasty: a propensity score-matched analysis
title_fullStr Clinical value of CT-based patient-specific 3D preoperative design combined with conventional instruments in primary total knee arthroplasty: a propensity score-matched analysis
title_full_unstemmed Clinical value of CT-based patient-specific 3D preoperative design combined with conventional instruments in primary total knee arthroplasty: a propensity score-matched analysis
title_short Clinical value of CT-based patient-specific 3D preoperative design combined with conventional instruments in primary total knee arthroplasty: a propensity score-matched analysis
title_sort clinical value of ct based patient specific 3d preoperative design combined with conventional instruments in primary total knee arthroplasty a propensity score matched analysis
topic Total knee arthroplasty
Propensity score matching
Three-dimensional
Alignment
VAS
KSS
url https://doi.org/10.1186/s13018-020-02123-5
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