3D-printing-based restoration rebuilding method of large-range osteochondral lesions of talus

A 3D printing, large-scale technology, applied in the direction of bone implants, etc., to achieve good biocompatibility and biosafety

Active Publication Date: 2016-10-12
RUIJIN HOSPITAL AFFILIATED TO SHANGHAI JIAO TONG UNIV SCHOOL OF MEDICINE
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Problems solved by technology

[0004] Aiming at the shortcomings of the prior art that cannot effectively carry out the repair and reconstruction of the osteochondral defect formed after the lesion removal of the large-scale talus osteochondral injury, the present in

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  • 3D-printing-based restoration rebuilding method of large-range osteochondral lesions of talus
  • 3D-printing-based restoration rebuilding method of large-range osteochondral lesions of talus

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Embodiment Construction

[0017] Such as figure 2 As shown, this embodiment includes the following steps:

[0018] Step 1. CT scan the ankle joint with a layer thickness of 0.625mm to obtain a file in .dcm format, and use the medical image processing software 3DRecon to perform individual bone segmentation and three-dimensional reconstruction of the talus to obtain a three-dimensional reconstruction image model of the individual talus;

[0019] Step 2. Export the talus component model data into stl format, import this .stl data into the 3-matic software of materialize company, and design the lesion on the three axes of X, Y, and Z according to the lesion position and range displayed on the talus image According to the cleared range, design the 3D printed talar component and osteotomy guide plate according to this position and range;

[0020] Step 3. Design two screw holes on the talus part, export the designed talus part model in .stl format, import the data into magics software for pre-printing data...

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Abstract

The invention provides a 3D-printing-based restoration rebuilding method of large-range osteochondral lesions of the talus. According to the method, the ankle joint is subjected to CT (Computed Tomography) scanning; then, an obtained image is subjected to single-talus division and 3D rebuilding to obtain a single-talus 3D rebuilding image model; a space to be processed is marked according to a focus region displayed on the 3D rebuilding image model; on the basis of the space to be processed, a 3D printing talus component and osteotomy guide plate with screw holes is generated; finally, the space to be processed is subjected to data processing layer slicing; the layer slicing data is exported; and a man-made talus component and osteotomy guide plate is obtained through 3D printing. The method provided by the invention can realize the treatment on the large-range osteochondral lesions of the talus and the restoration rebuilding on the osteochondral defect of the talus after the focus clearance.

Description

technical field [0001] The invention relates to a technology in the field of medical implant and auxiliary equipment preparation, in particular to a method for repairing and reconstructing a large-scale talus osteochondral injury based on 3D printing. Background technique [0002] Osteochondral lesions of the talus (OCL) are relatively common and can be seen in ankle fractures and dislocations, various sports injuries, chronic ankle instability, abnormal alignment of the mid- and hindfoot, and other metabolic abnormalities. It can lead to pain, swelling and dysfunction of the ankle joint. Long-term damage can even lead to ankle and subtalar arthritis, seriously affecting walking function and quality of life. The treatment of talus osteochondral injury is a clinical difficulty, and now the more generally accepted treatment method is: when the damage range is <1.5cm 3 Arthroscopy and microfracture treatment; when the damage range is >1.5cm 3 and <3cm 3 When using a...

Claims

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Application Information

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IPC IPC(8): A61F2/28
CPCA61F2/28A61F2002/2835
Inventor 王碧菠
Owner RUIJIN HOSPITAL AFFILIATED TO SHANGHAI JIAO TONG UNIV SCHOOL OF MEDICINE
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