Biological acetabulum part reconstruction prosthesis for treating hip joint dysplasia
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A dysplasia, bio-based technology, applied in the direction of hip joints, joint implants, joint implants, etc., can solve the problems of high surgical complication rate, easy recurrence, and inapplicability to patients with early mild dysplasia
Pending Publication Date: 2020-12-22
BEIJING JISHUITAN HOSPITAL
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[0005] The purpose of the present invention is to provide a biological acetabular partial reconstruction prosthesis for the treatment of hip joint dysplasia, which is used to solve the problems that the existing methods are not suitable for patients with early mild dysplasia, the high rate of surgical complications and the extremely easy Recurrence and other issues
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Embodiment 1
[0017] Embodiment 1 provides a biological partial acetabular reconstruction prosthesis for treating dysplasia of the hip joint, and its structure will be described in detail below.
[0018] refer to figure 1 with figure 2 , the bio-type acetabular partial reconstruction prosthesis includes a specific base 1 and an articular surface coating 2 .
[0019] The upper end of the specific base 1 is pointed and small, the lower end is thick, and the shape is dome-shaped, including the acetabular contact surface 11, soft tissue contact surface 12 and femoral head joint surface 13, the acetabular contact surface 11 and the soft tissue The contact surface 12 surrounds the side surfaces of the specific base 1, and the femoral head articulation surface 13 constitutes the bottom surface of the specific base 1;
[0020] Described specific base 1 is matched with patient's femoral head 100 and acetabulum 200, and can according to the case of individuation, the femoral head joint surface 13 ...
Embodiment 2
[0034] Embodiment 2 provides a method for partial joint replacement prosthesis, using the biological acetabular partial reconstruction prosthesis provided in Embodiment 1 for the treatment of hip joint dysplasia, the method includes the following steps:
[0035] Step S1: Obtain volumetric examination data such as computed tomography (CT for short) or Magnetic Resonance Imaging (MRI for short) of the hip joint on the affected side and the healthy side of the patient before operation;
[0036] Step S2: Preoperative computer reconstruction of the developmental shape of the acetabulum 200, design of a specific base 1 that matches the patient's femoral head 100 and acetabulum 200, or a patient-specific 3D printed custom prosthesis;
[0037] Step S3: Carry out preoperative planning according to the shape of the prosthesis, design the position of the prosthesis, determine the amount of soft tissue retention, etc.;
[0038] Step S4: performing an operation on the patient's acetabulum ...
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Abstract
The invention discloses a biological acetabulum part reconstruction prosthesis for treating hip joint dysplasia. The biological acetabulum part reconstruction prosthesis comprises a specific base andan articular surface coating; the upper end of the specific base is sharp and small, the lower end of the specific base is thick and big, and the specific base comprises an acetabulum contact surface,a soft tissue contact surface and a femoral head joint junction surface; the acetabulum contact surface and the soft tissue contact surface define the side surface of the specific base, and the femoral head joint junction surface forms the bottom surface of the specific base; and the specific base is of a three-dimensional porous net structure. According to the biological acetabulum part reconstruction prosthesis for treating hip joint dysplasia, the biomechanical environment of the hip joint of a patient is improved, the progress of hip joint inflammation is delayed, and the defects that anexisting periacetabular osteotomy is large in operative wound, poor in morphological combination and the like are overcome; and meanwhile, the biological acetabulum part reconstruction prosthesis is suitable for early treatment of hip joint dysplasia sequelae, joint replacement is delayed or avoided, and the biological acetabulum part reconstruction prosthesis has a remarkable effect on treatmentof mild hip joint dysplasia patients.
Description
technical field [0001] The invention relates to the technical field of medical devices, in particular to a biological acetabular partial reconstruction prosthesis for treating dysplasia of the hip joint. Background technique [0002] Hip dysplasia is one of the most common causes of hip arthritis in our country. Hip arthritis can cause pain in the hip joint, limited mobility and, in severe cases, loss of productivity. Patients with hip dysplasia in childhood can be treated by plaster fixation, muscle release, osteotomy and other methods. However, there are still a large number of patients who still have mild acetabular insufficient coverage after systemic treatment. The angle between the centerline and the edge of the acetabulum is ≤20 degrees. For such patients in adulthood, the traditional treatment for residual deformity is acetabular osteotomy, or conservative treatment first, followed by total hip replacement after arthritis develops. [0003] In short, the conservat...
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