Chinese Journal of Tissue Engineering Research ›› 2021, Vol. 25 ›› Issue (12): 1820-1825.doi: 10.3969/j.issn.2095-4344.3770

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Three-dimensional-printing assisted total hip arthroplasty for individualized treatment of adult developmental dysplasia of the hip

Zhang Nianjun1, 2, Liu Xiaofang2, Zhou Guanming2, Su Yao3, Hong Shi2   

  1. 1Guangzhou University of Chinese Medicine, Guangzhou 510006, Guangdong Province, China; 2Department of Orthopedics, Foshan Hospital of TCM Affiliated to Guangzhou University of Chinese Medicine, Foshan 528000, Guangdong Province, China; 3Linyi Central Blood Station, Linyi 276002, Shandong Province, China 
  • Received:2020-05-06 Revised:2020-05-12 Accepted:2020-06-09 Online:2021-04-28 Published:2020-12-25
  • Contact: Liu Xiaofang, Master, Chief physician, Department of Orthopedics, Foshan Hospital of TCM Affiliated to Guangzhou University of Chinese Medicine, Foshan 528000, Guangdong Province, China Co-corresponding author: Zhou Guanming, Chief physician, Department of Orthopedics, Foshan Hospital of TCM Affiliated to Guangzhou University of Chinese Medicine, Foshan 528000, Guangdong Province, China
  • About author:Zhang Nianjun, Doctoral candidate, Attending TCM physician, Guangzhou University of Chinese Medicine, Guangzhou 510006, Guangdong Province, China; Department of Orthopedics, Foshan Hospital of TCM Affiliated to Guangzhou University of Chinese Medicine, Foshan 528000, Guangdong Province, China
  • Supported by:
    the Science and Technology Program of Guangdong Province, No. 2017B090904002 (to LXF); the Project of Scientific Innovation from Science and Technology Bureau of Foshan, No. 2017AG100041 (to LXF)

Abstract: BACKGROUND: Total hip arthroplasty is the most effective method for the treatment of middle and late developmental dysplasia of the hip. The anatomical structure of developmental dysplasia of the hip patients is malformed, and acetabulum reconstruction is the difficulty of operation. At present, three-dimensional (3D) printing technology is used to reconstruct the pelvis model and guide the preoperative planning, but the direction and depth of the file have not been well solved. Thus, we will further mine the CT scan data of pelvis, and make a guide device using 3D printing technology to guide the direction of the file.  
OBJECTIVE: To investigate the clinical effect of 3D-printing assisted individualized total hip arthroplasty for adult developmental dysplasia of the hip.
METHODS: Thirty patients with developmental dysplasia of the hip were included and randomly divided into two groups (n=15 per group). In the observation group, 3D pelvis model and operation guide plate were made through 3D printing technology to develop individual operation plan. In the control group, the operation was completed according to the routine operation process. The operation time, intraoperative blood loss, and Harris score of hip joint in the last follow-up were compared between the two groups, and the difference of abduction angle, vertical and horizontal distance with the design value was compared to evaluate the accuracy of acetabular prosthesis placement. 
RESULTS AND CONCLUSION: (1) There was no significant difference in the abduction angle, Harris score during the last follow-up and horizontal distance between the two groups after surgery (P > 0.05). (2) The operation time and intraoperative blood loss of the observation group were significantly less than those of the control group (P < 0.05). (3) The vertical difference between the two groups was statistically significant (P < 0.05), and the design deviation of the observation group was smaller. (4) It is indicated that with the help of 3D printing technology, preoperative observation of personalized 3D model was used to enhance the understanding of the anatomical variation of developmental dysplasia of the hip. During the operation, the guiding function of acetabular prosthesis was used to improve the accuracy of acetabular prosthesis placement, shorten the operation time and reduce the amount of intraoperative blood loss.


Key words: joint, hip joint, developmental, dysplasia, 3D printing, joint arthroplasty, guider, 3D model

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