Digital three-dimensional measurement and design of proximal femoral nail antirotation for intertrochanteric femoral fractures

doi:10.3969/j.issn.2095-4344.2016.31.011

Abstract

Abstract:

BACKGROUND: For the department of orthopedics, digital technology can be used for a three-dimensional reconstruction of the fracture site, and visual virtual reset. This not only can preoperatively plan the operation path, make reasonable operation plan, but also can predict the prognosis after surgery.

OBJECTIVE: To discuss the feasibility and clinical effect of digital technology for three-dimensional measurement and preoperative design in intertrochanteric fracture patients undergoing proximal femoral nail antirotation.
METHODS: Eighty patients of intertrochanteric fractures, who underwent proximal femoral nail antirotation in the Changyi People’s Hospital from January 2010 to January 2014, were selected in this study. According to the order of visiting, they were randomly divided into traditional treatment group and three-dimensional design group, with 40 cases in each group. Patients in the traditional treatment group received proximal femoral nail antirotation. Patients in the three-dimensional design group received preoperative CT scan to establish the digital three-dimensional model of intact femur. The analog was reset by technology. The length and diameter of medullary cavity were measured. The appropriate specifications of intramedullary nail were selected. On this basis, the plan of the operation and implementation of operation were made. Operation time, intraoperative bleeding volume and blood transfusion were recorded in the two groups. Hip function was evaluated by hip Harris score.

RESULTS AND CONCLUSION: (1) Operations in the two groups were successful. Significant differences in operation time, intraoperative bleeding volume and blood transfusion were determined between the two groups (P < 0.05). No significant difference in length of stay was detected between the two groups (P > 0.05). (2) All patients were followed up. Postoperative wound was healed. Broken nail or broken rod was not found at the end of the study. (3) At the end of the follow-up, the excellent and good rate of Harris hip score was 95% in the traditional treatment group and 93% in the three-dimensional design group; no significant difference was detected between the two groups. (4) Results suggested that the application of digital department of orthopedics technology for the treatment of intertrochanteric fracture of femur in patients with preoperative three-dimensional measurement and surgical design can significantly shorten the operation time and improve hip function.

中国组织工程研究杂志出版内容重点：人工关节；骨植入物；脊柱；骨折；内固定；数字化骨科；组织工程

Key words: Femoral Fractures, Bone Nails, Internal Fixators, Tissue Engineering

CLC Number:

R318

Chen Shao-ming, Lu Bin, Yang Zhi-qiang, Zhou Xue-li, Chen Xiao-hua. Digital three-dimensional measurement and design of proximal femoral nail antirotation for intertrochanteric femoral fractures[J]. Chinese Journal of Tissue Engineering Research, 2016, 20(31): 4637-4643.

Figures/Tables 2

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