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Preoperative prosthesis pre-positioning method and device for joint replacement

A joint replacement and prosthesis technology, applied in the medical field, can solve problems such as low efficiency and poor precision

Active Publication Date: 2020-05-19
ARIEMEDI SCI SHIJIAZHUANG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method is not efficient and has poor accuracy

Method used

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  • Preoperative prosthesis pre-positioning method and device for joint replacement
  • Preoperative prosthesis pre-positioning method and device for joint replacement
  • Preoperative prosthesis pre-positioning method and device for joint replacement

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Embodiment Construction

[0033] Embodiments of the present invention will be described below with reference to the accompanying drawings. Elements and features described in one figure or embodiment of the present invention may be combined with elements and features shown in one or more other figures or embodiments. It should be noted that representations and descriptions of components or processes known to those of ordinary skill in the art that are unrelated to the present invention are omitted from the drawings and description for the purpose of clarity.

[0034] Embodiments of the present invention provide a method for pre-positioning a prosthesis before joint replacement surgery, such as figure 1 As shown, the method includes:

[0035] 101. Acquire CT image data.

[0036] 102. Perform segmentation and three-dimensional reconstruction on the patient's skeleton in the CT image data to obtain a skeleton model of the patient in the model space.

[0037] The skeleton model includes a three-dimension...

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Abstract

The invention relates to the technical field of medical treatment, and discloses a preoperative prosthesis pre-positioning method and device for joint replacement. The method comprises the following steps: acquiring CT image data; performing segmentation and three-dimensional reconstruction on the patient skeleton in the CT image data to obtain a skeleton model of the patient in model space, wherein the skeleton model comprises a joint three-dimensional model; selecting at least two fixed feature points on the end surface of the joint three-dimensional model; selecting the same number of fixedpoints at the same positions as the fixed feature points of the joint three-dimensional model on the end surface of a prosthesis model; and performing three-dimensional matching on the joint three-dimensional model and the prosthesis model to realize prosthesis pre-positioning. The method improves the efficiency and precision of pre-positioning.

Description

technical field [0001] The invention relates to the field of medical technology, in particular, to a method and device for pre-positioning a prosthesis before joint replacement surgery. Background technique [0002] At present, various common orthopedic diseases include osteoarthritis, rheumatoid arthritis, cartilage destruction and so on. With the deepening of aging, the incidence of orthopedic diseases increases, and artificial joint replacement surgery is an effective means to deal with these diseases. [0003] In clinical practice, the determination of the osteotomy plane in conventional hip and knee arthroplasty relies on the operator's empirical judgment. The surgeon estimates the approximate osteotomy position based on the prosthesis to be replaced. This method greatly affects the accuracy of osteotomy and the recovery of patients after surgery, and is prone to various complications. In addition, only judging the osteotomy position based on the operator's experienc...

Claims

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Application Information

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IPC IPC(8): A61F2/46
CPCA61F2/4603A61F2002/4633
Inventor 杨峰
Owner ARIEMEDI SCI SHIJIAZHUANG CO LTD