CN107252364B - 3D printed humerus model and preparation method thereof - Google Patents
3D printed humerus model and preparation method thereof Download PDFInfo
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- CN107252364B CN107252364B CN201710547255.3A CN201710547255A CN107252364B CN 107252364 B CN107252364 B CN 107252364B CN 201710547255 A CN201710547255 A CN 201710547255A CN 107252364 B CN107252364 B CN 107252364B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/28—Bones
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B34/00—Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
- A61B34/10—Computer-aided planning, simulation or modelling of surgical operations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y80/00—Products made by additive manufacturing
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B34/00—Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
- A61B34/10—Computer-aided planning, simulation or modelling of surgical operations
- A61B2034/101—Computer-aided simulation of surgical operations
- A61B2034/105—Modelling of the patient, e.g. for ligaments or bones
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/28—Bones
- A61F2002/2853—Humerus
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The invention is a 3D printed humeral model comprising a humeral shaft, a proximal humerus, a distal humerus, a fracture surface and/or 10 internal fragments; wherein the humeral model further comprises a 3D printed mirrored humeral structure of the fractured humerus contralateral humerus, with a tack hole or other structure required during the surgical procedure disposed adjacent the fracture surface. The model preparation method comprises the steps of obtaining images and three-dimensional data of the humerus at two sides and a fracture position in a 64-row spiral CT scanning mode, analyzing according to the three-dimensional data to obtain data of a fracture humerus model and a mirror image humerus structure of the contralateral humerus, and converting the data into a 3D printing identification mode to print the model. The mirror image humerus structure is compared with the fracture humerus structure, the operation of an operator can be effectively and intuitively assisted, a young doctor can intuitively know the operation steps, and the model is easy to communicate with a patient through a physical structure.
Description
Technical Field
The invention belongs to orthopaedics, in particular to a simulation structure used for humerus fracture, and particularly relates to a 3D printed humerus model and a preparation method thereof.
Background
Proximal humerus fractures account for 4% -5% of systemic fractures, and have high incidence rate in the elderly, and clinical treatment is difficult due to anatomical characteristics of proximal humerus bones and muscles, senile osteoporosis and other factors, and shoulder joint stiffness, bone nonunion and malformation healing are caused by improper treatment. The incision reduction internal fixation has great damage to soft tissues, can further destroy the blood circulation of humerus head, increases the risks of ischemic necrosis and bone nonunion of the humerus head, and has poor treatment effect on patients with severe comminuted fracture and senile osteoporosis.
For humerus fracture, especially proximal fracture, basic information of fracture can be known by conventional preoperative positive and lateral X-ray films, and for more complex three-and four-component fracture, CT scanning or three-dimensional CT reconstruction can be supplemented, and information such as fracture range, crushing degree, displacement direction and distance of fracture films can be further clarified, but the following problems still exist: (1) the method can only theoretically make an operation scheme, can not perform preoperative real-time exercise on the scheme, and can not perform actual combat; (2) an effective treatment scheme is based on the correct understanding of the fracture occurrence mechanism and the accurate fracture typing, and CT can provide limited information for patients with humeral head replacement; (3) the teaching aid has limited effect on the exchange of illness state information between doctors and patients and young doctors.
In addition, due to the low individuation level of related instruments such as the surgical prosthesis bone fracture plate, the problems of structural non-anastomosis are easily caused, and the later recovery of a patient is influenced.
Along with the development and progress of the current computer aided design and 3D printing technology, if a proper technology can be adopted to design and print out the structure of the fracture, the method can provide good reference significance for personalized treatment; at present, no 3D printing model and related designs for humerus fracture and proximal humerus fracture exist in China, and the personalized 3D printing humerus model and the preparation method thereof are designed and printed by utilizing computer-aided design and 3D printing technology.
Disclosure of Invention
The invention provides a 3D printed humerus model and a preparation method thereof, and aims to solve the problems of insufficient targeted personalized treatment modes, poor postoperative recovery conditions and the like of humerus fracture, in particular humerus proximal fracture, in the prior art.
A 3D printed humeral model comprising a humeral shaft, a proximal humerus, a distal humerus, a fracture face and/or 10 internal bone pieces; the humerus model is characterized by further comprising a 3D printed mirror image humerus structure of the fractured humerus contralateral humerus, and a nail hole or other structures required in the operation process are arranged near the fracture surface. Because fracture bone fracture makes up the concatenation process loaded down with trivial details, and the both sides humerus of human body is basically symmetrical in addition, can compare the mirror image humerus structure of symmetrical humerus with fracture bone, carry out the contrast operation of operation in-process, make things convenient for the doctor to compare, in addition through fracture bone and mirror image humerus structure setting can very directly perceivedly let the patient know the condition of oneself, and guide the clinician study before the year easily, let young doctors know the step of operation and the angle of operation through audio-visual structure, help young clinicians to ripen as early as possible.
Further, when the fracture surface is at the humeral head and humeral head replacement is needed, a cross section is arranged below the fracture surface, and a humeral head rod inlet is arranged below the cross section; the mirror image humerus structure is correspondingly provided with a cross section, the cross section divides the mirror image humerus into two parts, one part is an upper humerus head structure, the other part is a humerus shaft structure, and the cross section of the humerus head structure is provided with a humerus head rod. The cross section, the humeral head rod inlet hole and the humeral head rod can facilitate the appearance understanding of the operation part and simulate the operation, thereby providing good guidance for humeral head replacement.
Further, the cross-section is disposed at the distal humeral head and does not pass through the humeral tuberosity. The arrangement can effectively ensure the angle of humeral head replacement operation and ensure the replacement effect.
Furthermore, a personalized 3D printed humeral head replacement prosthesis is also arranged, the personalized setting is strong in pertinence, the patient is set by himself, the anastomosis degree is high, the operability is strong, and the postoperative recovery effect is good.
Further, the material of the prosthesis is a titanium alloy material.
Alternatively, when the fracture surface is not at the humeral head, or no humeral head surgery is required, a bone plate nail hole is provided near the fracture surface. Further, the model also comprises a bone plate which is reversely fitted, and the bone plate is provided with nail holes corresponding to the nail inlet holes.
Further, the number of the bone blocks is within 5, and the bone blocks within 5 can be spliced, so that the bone fracture operation after splicing is realized, otherwise, too many bone blocks are not beneficial to the bone fracture operation.
Furthermore, numbers are arranged on the bone blocks according to the recombination sequence, and the operation of doctors can be better guided by performing simulation splicing under a computer system and numbering the bone blocks.
Further, the 3D printing model is a 1:1 scale model. The equi-sized arrangement can ensure the authenticity of the simulation operation.
The preparation method of the 3D printed humerus model comprises the following steps:
1) Obtaining images and data of the humerus and fracture parts on two sides of a patient through X-ray or CT scanning;
2) The data is imported into a computer for analysis, the two lateral humerus is analyzed, the non-fracture lateral humerus and the fracture lateral humerus are mirror symmetrical through adjustment analysis, and the non-fracture lateral humerus is mirror-imaged, so that a complete three-dimensional mirror image humerus consistent with the fracture lateral humerus is obtained;
3) Analyzing the sizes of fracture surfaces and bone blocks at the fracture position to generate three-dimensional fracture surfaces and bone blocks;
4) The mirror image humerus three-dimensional image and the fracture bone and the three-dimensional image of the fracture surface and the bone block are placed side by side, the fracture surface and the fracture block are recombined by contrasting the mirror image humerus, and a nail inlet hole is arranged near the fracture surface or a cross section is arranged below the fracture surface;
5) All three-dimensional images are converted into a format recognized by a 3D printer, and 3D printing is performed.
Further, the format recognized by the 3D printer is an STL format.
Further, the CT scanning mode is 64 rows of spiral CT scanning, and the scanning mode can better obtain image data.
Further, when the humeral head is required to be replaced by the humeral fracture, a cross section is formed at the same position below the mirror image humerus and the fracture surface, and a humeral head rod inlet is arranged below the cross section; the cross section divides the mirror image humerus into two parts, one part is an upper humerus head structure, the lower part is a humerus shaft structure, and a humerus head rod is arranged at the cross section of the humerus head structure.
Further, when the fracture surface is not at the humeral head, a nail hole is reasonably arranged near the fracture surface;
further, the outside of the nail inlet hole is reversely fitted with a bone fracture plate, and the bone fracture plate is correspondingly provided with a nail hole.
The beneficial effects of the invention are as follows: (1) the 'characteristic' of the fracture can be completely understood on the model, the anatomical relation between fracture blocks is defined, and the fracture type is further defined; (2) for patients needing humeral head replacement, a plurality of problems which cannot be found or suspicious on X-rays and CT can be clear on a model, and important operation marker data for determining the replacement effect and success or failure of the prosthesis can be measured before operation, such as the size of the humeral head, the height of the large tuberosity, the retroversion angle of the humeral head and the like; (3) by data analysis on a computer and a model, indexes such as the size of the prosthesis, the height of the prosthesis to be implanted, the backward tilting angle of the prosthesis to be placed and the like required in the operation can be clarified before the operation, thereby being beneficial to shortening the operation time and achieving more accurate operation effect; (4) the operation preview can be performed on the model before operation, which has important significance for young doctors, and simultaneously can lead the communication between doctors and patients to be visual and simple.
Drawings
FIG. 1 is a schematic view of an overall model of a fracture at the humeral head of the present invention;
FIG. 2 is a schematic diagram of a cross-sectional model of a fracture at a humeral head according to the present invention;
FIG. 3 is a schematic view of a proximal humeral model of a fracture at the humeral head of the present invention;
FIG. 4 is a schematic view of a humeral fracture surface model according to the present invention;
FIG. 5 is a schematic view of a model of a humeral head on a mirrored humerus of the invention with a humeral head fracture;
FIG. 6 is a schematic view of a cross-sectional model of the humeral head of the present invention when fractured;
FIG. 7 is a schematic view of the overall model of the fracture surface of the present invention without the humeral head;
FIG. 8 is a schematic view of a fracture model of the fracture surface of the present invention without the humeral head;
FIG. 9 is a schematic view of a fracture surface model of the present invention with the fracture surface not in the humeral head;
FIG. 10 is a schematic view of a bone plate model of the present invention with the fracture surface not in the humeral head;
in the figure, 1, humeral stem; 2. proximal humerus; 3. a distal humerus; 4. humeral head; 5. bone pieces; 6. mirror image of humerus; 7. cross section; 8. a humeral head rod access hole; 9. a humeral head rod; 10. a replacement prosthesis; 11. a nail inlet hole; 12. a bone plate; 13. nail hole, 14, fracture surface.
Detailed Description
Example 1 preparation method of 3D printed humerus model
Obtaining the image and data of the humerus and the fracture position at the two sides of the patient through 64 rows of spiral CT scanning; the data is imported into a computer for analysis, the two lateral humerus is analyzed, the non-fracture lateral humerus and the fracture lateral humerus are mirror symmetrical through adjustment analysis, and the non-fracture lateral humerus is mirror-imaged, so that a complete three-dimensional mirror image humerus 6 consistent with the fracture lateral humerus is obtained; analyzing the sizes of the fracture surface 14 and the bone block 5 at the fracture position to generate a three-dimensional fracture surface 14 and the bone block 5; by placing the mirrored humerus 6 three-dimensional image and the fractured bone and its fracture surface 14 and bone pieces 5 side by side, the fracture surface 14 and fracture pieces are reorganized against the mirrored humerus 6,
when the humerus head 4 is fractured and the humerus head 4 is required to be replaced, a cross section 7 is formed at the same position below the mirror image humerus 6 and the fracture surface 14, and a humerus head rod inlet hole 8 is arranged below the cross section 7; the cross section 7 divides the mirror image humerus 6 into two parts, one part is in the structure of the upper humerus head 4, the lower part is in the structure of the humerus shaft 1, and the humerus head rod 9 is arranged at the cross section 7 of the humerus head 4.
When the fracture surface 14 is not positioned at the humeral head 4, reasonably arranging the nail hole 11 near the fracture surface 14; the outside of the nail inlet hole 11 is reversely fitted with a bone plate 12, and the bone plate 12 is correspondingly provided with a nail hole 13. And finally, converting all the three-dimensional images into an STL format recognized by a 3D printer, and performing 3D printing.
Example 2 3D printed humerus model
A 3D printed humeral model comprising a humeral shaft 1, a proximal humerus end 2, a distal humerus end 3, a fracture face 14 and/or 10 internal bone pieces 5; wherein the humerus model further comprises a 3D printed mirrored humerus 6 structure of the fractured humerus contralateral humerus, when the fracture surface 14 is at the humerus head 4 and the humerus head 4 is required to be replaced, a cross section 7 is arranged below the fracture surface 14, and a humeral head rod inlet 8 is arranged below the cross section 7; the mirror image humerus 6 is correspondingly provided with a cross section 7 structurally, the cross section 7 divides the mirror image humerus 6 into two parts, one part is in an upper humerus head 4 structure, the other part is in a humerus shaft 1 structure, and a humerus head rod 9 is arranged at the cross section 7 of the humerus head 4 structure. The cross section 7, the humeral head rod inlet hole 8 and the humeral head rod 9 can facilitate the appearance understanding of the operation part and simulate the operation, thereby providing good guidance for the replacement of the humeral head 4. The cross section 7 is disposed at the distal end of the humeral head 4 and does not pass through the humeral tuberosity. This arrangement effectively ensures the angle of the humeral head 4 replacement and the effect of the replacement. The 3D printing model is a 1:1 scale model. The equi-sized arrangement can ensure the authenticity of the simulation operation. By 1: the model 1 can intuitively know the sizes of all parts, and conveniently assists in selecting the humeral head 4 prosthesis with proper size. In addition, because fracture bone fracture is complicated in combination and splicing process, the two lateral humerus of a human body are basically symmetrical, the mirror image humerus 6 structure of the symmetrical humerus can be compared with the fracture bone, the comparison operation in the operation process is carried out, a doctor can conveniently carry out the comparison, in addition, the patient can know own conditions through the arrangement of the fracture bone and the mirror image humerus 6 structure, and the doctor can learn easily before the year, the young doctor can know the operation steps and the operation angles through the visual structure, and the young doctor is assisted to mature as soon as possible.
Example 3D printed humerus model
A 3D printed humeral model comprising a humeral shaft 1, a proximal humerus end 2, a distal humerus end 3, a fracture face 14 and/or 10 internal bone pieces 5; wherein the humerus model further comprises a 3D printed mirrored humerus 6 structure of the fractured humerus contralateral humerus, when the fracture surface 14 is at the humerus head 4 and the humerus head 4 is required to be replaced, a cross section 7 is arranged below the fracture surface 14, and a humeral head rod inlet 8 is arranged below the cross section 7; the mirror image humerus 6 is correspondingly provided with a cross section 7 structurally, the cross section 7 divides the mirror image humerus 6 into two parts, one part is in an upper humerus head 4 structure, the other part is in a humerus shaft 1 structure, and a humerus head rod 9 is arranged at the cross section 7 of the humerus head 4 structure. The cross section 7, the humeral head rod inlet hole 8 and the humeral head rod 9 can facilitate the appearance understanding of the operation part and simulate the operation, thereby providing good guidance for the replacement of the humeral head 4. The cross section 7 is disposed at the distal end of the humeral head 4 and does not pass through the humeral tuberosity. This arrangement effectively ensures the angle of the humeral head 4 replacement and the effect of the replacement. The personalized 3D-printed humeral head 4 replacement prosthesis 10 is also arranged, the personalized setting is strong in pertinence, the patient is set by himself, the anastomosis degree is high, the operability is strong, and the postoperative recovery effect is good. The material of the prosthesis is titanium alloy material.
Example 4 3D printed humerus model
A 3D printed humeral model comprising a humeral shaft 1, a proximal humerus end 2, a distal humerus end 3, a fracture face 14 and/or 10 internal bone pieces 5; wherein the humeral model further comprises a 3D printed mirrored humeral 6 structure of the fractured humeral contralateral humerus, the bone plate 12 is positioned adjacent the fracture surface 14 with the fracture surface 14 not at the humeral head 4 or without requiring humeral head 4 surgery. The model also comprises a reverse fitting bone plate 12, and the bone plate 12 is provided with a nail hole 13 corresponding to the nail inlet hole 11. The number of the bone pieces 5 is within 5, the bone pieces 5 within 5 can realize splicing of the bone pieces 5, and the bone fracture operation after splicing is performed, otherwise, too many bone pieces 5 are not beneficial to the bone fracture operation. The 3D printing model is a 1:1 scale model. The equi-sized arrangement can ensure the authenticity of the simulation operation.
Example 5 3D printed humerus model
A 3D printed humeral model comprising a humeral shaft 1, a proximal humerus end 2, a distal humerus end 3, a fracture face 14 and/or 10 internal bone pieces 5; wherein the humeral model further comprises a 3D printed mirrored humeral 6 structure of the fractured humeral contralateral humerus, the bone plate 12 is positioned adjacent the fracture surface 14 with the fracture surface 14 not at the humeral head 4 or without requiring humeral head 4 surgery. The model also comprises a reverse fitting bone plate 12, and the bone plate 12 is provided with a nail hole 13 corresponding to the nail inlet hole 11. The number of the bone pieces 5 is within 5, the bone pieces 5 within 5 can realize splicing of the bone pieces 5, and the bone fracture operation after splicing is performed, otherwise, too many bone pieces 5 are not beneficial to the bone fracture operation. The serial numbers are arranged on the bone blocks 5 according to the recombination sequence, and the operation of doctors can be better guided by performing simulation splicing under a computer system and numbering the bone blocks 5. The 3D printing model is a 1:1 scale model. The equi-sized arrangement can ensure the authenticity of the simulation operation.
The above description of embodiments is only for the understanding of the present invention. It should be noted that it will be apparent to those skilled in the art that modifications can be made to the present invention without departing from the principles of the invention, and such modifications will fall within the scope of the claims.
Claims (8)
1. A 3D printed humeral model comprising a humeral shaft (1), a proximal humerus (2), a distal humerus (3), a fracture face (14) and/or 10 internal bone pieces (5); the humerus model is characterized by further comprising a 3D printed mirror image humerus (6) structure of a fractured humerus contralateral humerus, wherein a nail hole (11) or other structures required in the operation process are arranged near a fracture surface (14); when the fracture surface (14) is positioned at the humerus head (4) and the humerus head (4) is required to be replaced, a cross section (7) is arranged below the fracture surface (14), and a humerus head rod inlet hole (8) is arranged below the cross section (7); the mirror image humerus (6) is correspondingly provided with a cross section (7) structurally, the cross section (7) divides the mirror image humerus (6) into two parts, one part is in an upper humerus head (4) structure, the other part is in a humerus stem (1) structure, and a humerus head rod (9) is arranged at the cross section (7) of the humerus head (4) structure; the cross section is arranged at the tail end of the humerus head (4) and does not pass through the tuberosity of the humerus; and setting numbers on each bone block according to the recombination sequence, and carrying out simulated splicing under a computer system and numbering the bone blocks.
2. 3D printed humerus model according to claim 1, characterized in that a 3D printed humeral head (4) replacement prosthesis (10) is also provided.
3. The 3D printed humerus model of claim 2, wherein the material of the prosthesis is a titanium alloy material.
4. 3D printed humeral model as claimed in claim 1, characterised in that a bone plate (12) screw hole (11) is provided near the fracture face (14) when the fracture face (14) is not at the humeral head (4) or no humeral head (4) surgery is required.
5. 3D printed humerus model according to claim 4, characterized in that it also comprises a reverse fitting bone plate (12), the bone plate (12) being provided with nail holes (13) corresponding to the nail holes (11).
6. The method of preparing a 3D printed humerus model of claim 1, comprising:
1) Obtaining images and data of the humerus and fracture parts on two sides of a patient through X-ray or CT scanning;
2) The data is imported into a computer for analysis, the two lateral humerus is analyzed, the non-fracture lateral humerus and the fracture lateral humerus are mirror symmetrical through adjustment analysis, and the non-fracture lateral humerus is mirror-imaged, so that a complete three-dimensional mirror image humerus (6) consistent with the fracture lateral humerus is obtained;
3) Analyzing the sizes of a fracture surface (14) and a bone block (5) at the fracture position to generate a three-dimensional fracture surface (14) and a three-dimensional bone block (5);
4) By arranging the mirror image of the humerus (6) and the three-dimensional images of the fractured bone and its fracture surface (14) and bone pieces (5) side by side, the fracture surface (14) and the fracture pieces are reorganized against the mirror image of the humerus (6), a nail hole (11) is arranged near the fracture surface (14) or a cross section (7) is arranged below the fracture surface (14);
5) All three-dimensional images are converted into a format recognized by a 3D printer, and 3D printing is performed.
7. The method of claim 6, wherein the CT scan is a 64-row helical CT scan.
8. The preparation method according to claim 6, characterized in that when the humerus head (4) is fractured and the humerus head (4) is replaced, a cross section (7) is formed at the same position under the mirror image humerus (6) and the fracture surface (14), and a humerus head rod inlet hole (8) is arranged under the cross section (7); the mirror image humerus (6) is divided into two parts by the cross section (7), one part is in an upper humerus head (4) structure, the lower part is in a humerus stem (1) structure, and a humerus head rod (9) is arranged at the cross section (7) of the humerus head (4) structure; when the fracture surface (14) is not positioned at the humeral head (4), the nail hole (11) is reasonably arranged near the fracture surface (14).
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| CN107616839A (en) * | 2017-11-10 | 2018-01-23 | 岳春华 | A kind of flap perforating artery localization method rebuild based on 3D printing |
| CN110338943B (en) * | 2019-07-17 | 2023-11-24 | 天津市天津医院 | Computer aided design individuation humerus prosthesis and manufacturing method |
| CN111035477A (en) * | 2019-12-31 | 2020-04-21 | 益阳市中心医院 | Method for repairing diseased pelvis through 3D printing |
| CN112120789B (en) * | 2020-09-08 | 2022-08-05 | 杭州三坛医疗科技有限公司 | Broken bone reduction simulation method and broken bone reduction simulation device |
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