Enhancing scapular glenoid prosthesis
A prosthesis, shoulder glenoid technology, applied in the direction of prosthesis, shoulder joint, medical science, etc., can solve the problems of increased loosening rate of shoulder glenoid prosthesis, stress concentration of the prosthesis, Trojan horse effect, etc., and achieve good long-term stability, Potential effects of improved extraction force and reduced early loosening
Pending Publication Date: 2020-05-19
THE AFFILIATED HOSPITAL OF QINGDAO UNIV
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Problems solved by technology
[0002] Although artificial total shoulder arthroplasty is an effective means for the treatment of end-stage shoulder diseases such as osteoarthritis, and complex fractures, for more complex cases, such as primary or revision cases of posterior or anterior glenoid bone defects, conventional sham The bone defect will cause local stress concentration of the prosthesis, resulting in a "Trojan horse effect", resulting in an increase in the loosening rate of the glenoid prosthesis in the short term or in the long term
Prostheses for these more complex cases are currently lacking
Method used
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[0032] The enhanced glenoid prosthesis of the invention can be used for conventional glenoid prosthesis replacement, and can also be used for cases with bone defects of the glenoid, especially for revision or fracture cases with bone defects in the front or rear of the glenoid, the present invention can provide Good overall initial stability, reducing fretting, and avoiding the short-term, mid-term and long-term loosening caused by it.
[0033] Below in conjunction with accompanying drawing, the realization mode of the present invention is described in detail by specific embodiment:
[0034] Such as Figure 1-7 As shown, this embodiment proposes a reinforced glenoid prosthesis, which is made of metal or alloy and consists of a glenoid base 10 , a reinforcing spacer 20 , connecting screws 30 and locking screws 40 .
[0035] refer to figure 1 with figure 2 Shown is a schematic diagram of the structure of the glenoid base 10, the upper surface and the lower surface of the upp...
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The invention provides an enhancing scapular glenoid prosthesis. The enhanced scapular glenoid prosthesis includes a scapular glenoid base, an enhancing cushion block, a connecting screw and a lockingscrew. After the scapular glenoid base and enhancing cushion block are connected and locked so as to fill bony defects of scapular glenoid, and a stable combination system is formed; and the enhancedscapular glenoid prosthesis can be applied to replacement of conventional scapular glenoid prosthesises, or to cases with complicated bony defects of scapular glenoid, especially to total-shoulder joint replacement for complicated bony defects at the anterior or posterior of scapular glenoid. After an implantation device is utilized to implant the enhancing scapular glenoid prosthesis into the to-be-replaced articular surface of scapula, good, overall and initial stability can be obtained, and the bony defect of scapular glenoid can be filled with the enhancing cushion block, so that early-stage and long-term loosening of the prosthesis is reduced, the stress on the scapular glenoid prosthesis is reduced, and an excellent, overall and long-term effect is produced after bone healing is achieved through the enhancing cushion block.
Description
technical field [0001] The invention belongs to the technical field of the special prosthesis for replacing the glenoid with partial bone defect, in particular the reinforced glenoid prosthesis which can be connected with the reinforced block. Background technique [0002] Although artificial total shoulder arthroplasty is an effective means for the treatment of end-stage shoulder diseases such as osteoarthritis, and complex fractures, for more complex cases, such as primary or revision cases of posterior or anterior glenoid bone defects, conventional sham The bone defect will cause local stress concentration of the prosthesis, resulting in a "Trojan horse effect", resulting in an increase in the loosening rate of the glenoid prosthesis in the short term or in the long term. Prostheses for these more complex cases are currently lacking. Contents of the invention [0003] The purpose of the present invention is to provide a reinforced glenoid prosthesis, which can be used ...
Claims
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IPC IPC(8): A61F2/40A61F2/46
CPCA61F2/40A61F2/4081A61F2/4601A61F2/4612A61F2/4644A61F2002/4018A61F2002/4085A61F2002/4645
Inventor 张海宁冷萍
Owner THE AFFILIATED HOSPITAL OF QINGDAO UNIV