Manufacturing method of personalized absorbable support bone grafting plate for developmental dysplasia of hip

Abstract

The invention discloses a manufacturing method of a personalized absorbable support bone grafting plate for developmental dysplasia of the hip. The manufacturing method comprises the following steps of generating contour lines of all layers of a bone wheel and contour lines of cancellous bones through CT scanning data, further obtaining cortical bone and cancellous bone three-dimensional models, and constructing a support bone grafting plate 3D model according to the damage conditions of the cortical bone and cancellous bone three-dimensional models. and carrying out 3D printing post-treatmentto obtain the support bone grafting plate. Some examples of the invention can satisfy the coverage of the outer side, the front and the rear of the acetabulum, avoid excessive coverage, reconstruct the normal mechanical conduction of the hip joint, effectively relieve cartilage wear caused by stress concentration, and have a wide clinical application prospect.

Description

technical field [0001] The invention relates to the field of surgical implant design, in particular to a manufacturing method of a personalized acetabular dysplasia absorbable support bone graft plate. Background technique [0002] Developmental dysplasia of the hip (DDH) usually includes lack of bone in the acetabulum surrounding the upper and anterior parts of the femoral head, shallow acetabulum, and abnormal lateralization of the hip joint that lead to The reduction of the contact area leads to an increase in the contact pressure of the joints, resulting in cartilage damage and degeneration, leading to the occurrence of degenerative secondary osteoarthritis, which seriously affects the daily life and work of patients. [0003] Among the current treatment methods for DDH, pelvic osteotomy has achieved good results for acetabular dysplasia, but the operation is complicated, the operation risk is high, the technical requirements for the surgeon are very strict, and many com...

AI Technical Summary

Problems solved by technology

[0004] Existing specific disease diagnosis of acetabular dysplasia mainly relies on X-ray and CT, limited by the limitations of instruments and methods, it is difficult to clearly determine the degree of acetabular and femoral head lesions, acetabular size, acetabular Lateral, anterior and posterior bone defects, which put forward higher requirements for the production of individual support plates

[0005] Although individualized support plates are important to DDH patients, there is a lack of effective manufacturing methods in the prior art

The current augmentation block used for hip dysplasia is a fixed product. Although there are different models and sizes to choose from, it is difficult to meet the coverage of the lateral, anterior and posterior aspects of the acetabulum while avoiding excessive coverage

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