CN217525283U - Buckling clearance angle measurement cushion block group - Google Patents
Buckling clearance angle measurement cushion block group Download PDFInfo
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- CN217525283U CN217525283U CN202220901823.1U CN202220901823U CN217525283U CN 217525283 U CN217525283 U CN 217525283U CN 202220901823 U CN202220901823 U CN 202220901823U CN 217525283 U CN217525283 U CN 217525283U
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- measuring
- osteotomy
- block
- measuring part
- cushion
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- 238000005259 measurement Methods 0.000 title claims description 16
- 210000002303 tibia Anatomy 0.000 claims abstract description 24
- 210000000629 knee joint Anatomy 0.000 claims abstract description 15
- 210000000988 bone and bone Anatomy 0.000 abstract description 11
- 238000013461 design Methods 0.000 abstract description 2
- 210000004872 soft tissue Anatomy 0.000 description 10
- 238000011883 total knee arthroplasty Methods 0.000 description 7
- 210000000689 upper leg Anatomy 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 208000003947 Knee Osteoarthritis Diseases 0.000 description 1
- 208000004550 Postoperative Pain Diseases 0.000 description 1
- 241000469816 Varus Species 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 210000000544 articulatio talocruralis Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006355 external stress Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 210000001699 lower leg Anatomy 0.000 description 1
- 201000008482 osteoarthritis Diseases 0.000 description 1
- 231100000915 pathological change Toxicity 0.000 description 1
- 230000036285 pathological change Effects 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000002271 resection Methods 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 210000001694 thigh bone Anatomy 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
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Abstract
The utility model discloses a flexion gap angle measuring cushion group, which comprises at least one cushion block, wherein each cushion block comprises a measuring part and a handheld part, the measuring part is used for measuring the included angle between the lower edge surface of a knee joint flexion 90-degree osteotomy guider and the proximal tibia osteotomy surface in TKA operation, and the handheld part is fixedly connected with the measuring part and is used for placing the measuring part between the lower edge surface of the osteotomy guider and the proximal tibia osteotomy surface; the measuring part is provided with a contact surface A for contacting with the lower edge surface of the osteotomy guide and a contact surface B for contacting with the proximal osteotomy surface of the tibia, and the included angle between the contact surface A and the contact surface B is alpha and alpha is epsilon [0,7 degrees ]. The utility model has the advantages of simple structure and reasonable design, can measure the angle between shin bone near-end osteotomy face and the lower edge face of osteotomy director. When carrying out the TKA operation, can increase or reduce the external rotation angle of cutting the bone director accurately according to this measuring result cooperation cuts bone director positioner, and then ensures to cut the bone precision.
Description
Technical Field
The utility model belongs to the technical field of medical instrument, concretely relates to bucking clearance angle measurement backing block group.
Background
Total Knee Arthroplasty (TKA) is an effective method for treating terminal knee osteoarthritis, and mainly includes a gap balancing technique and a measured osteotomy technique.
The gap balancing technology is to determine the rotation osteotomy of the femur according to the soft tissue tension on two sides of the knee joint by taking the tibia osteotomy surface as a reference so as to obtain a rectangular flexion gap, but for the knee joint with serious pathological changes, if the soft tissue on one side of the knee joint contracts, the femur prosthesis can be over-rotated outwards or over-rotated inwards. The measurement osteotomy technology is to measure osteotomy according to the mechanical axis and anatomical positioning mark of femur and tibia, firstly consider the force line, then release the soft tissue, and finally reach good balance of the force line and the soft tissue. Both osteotomy techniques have advantages and disadvantages.
At present, the measurement osteotomy technique of 3 degrees of external rotation of the distal femur is the most common, but the soft tissue imbalance of the flexion gap often occurs, and the conditions of small medial side and large lateral side of the flexion gap after the resection of the femoral posterior condyle are particularly suitable for patients with serious varus deformity. The conventional approach is to loosen the tight side soft tissue to achieve flexion gap soft tissue balance, but this increases the level of trauma and post-operative pain, which is detrimental to the early postoperative performance of knee function exercises.
Therefore, the combination of the measurement osteotomy technology and the gap balancing technology becomes a research hotspot, namely, after the osteotomy guide is installed, the knee joint bends by 90 degrees to judge whether the space between the proximal tibial osteotomy surface and the four-in-one osteotomy guide is a rectangle or not, and if the space between the proximal tibial osteotomy surface and the four-in-one osteotomy guide is not a rectangle, the distal femoral external rotation osteotomy angle is adjusted; if the two are approximately rectangular, the bone is directly cut, and a rectangular buckling gap is obtained. The mode that above-mentioned both combine together is favorable to obtaining knee joint flexion clearance balance, avoids the soft tissue to loosen, promotes the operation effect. However, in the actual clinical operation, how to accurately adjust the external rotation osteotomy angle becomes a difficult problem. In actual operation, the measurement osteotomy technology is usually adopted to externally rotate by 3 degrees to install the four-in-one osteotomy guide, an assistant holds the far end of a thigh, an operator reversely pulls a shank at a position where a knee joint bends by 90 degrees, and after the shape between the proximal osteotomy surface of the tibia and the lower edge surface of the osteotomy guide is observed, the adjustment is carried out by means of personal experience, and errors possibly exist.
Disclosure of Invention
For solving exist among the prior art more than not enough, the utility model aims at providing a bucking clearance angle measurement backing block group to the realization is to the determination of best external rotation osteotomy angle, and then avoids the circumstances that both sides soft tissue is unbalanced behind the osteotomy.
In order to achieve the above object, the utility model adopts the following technical scheme: a flexion gap angle measuring cushion set comprises at least one cushion block, wherein each cushion block comprises a measuring part and a handheld part, the measuring part is used for measuring an included angle between the lower edge surface of a knee joint flexion 90-degree osteotomy guide and the proximal tibia osteotomy surface in TKA surgery, and the handheld part is fixedly connected with the measuring part and used for placing the measuring part between the lower edge surface of the osteotomy guide and the proximal tibia osteotomy surface;
the measuring part is provided with a contact surface A for contacting with the lower edge surface of the osteotomy guide and a contact surface B for contacting with the proximal osteotomy surface of the tibia, and the included angle between the contact surface A and the contact surface B is alpha and alpha is epsilon [0,7 degrees ].
As a limitation of the present invention, the angle α between the contact surface a and the contact surface B of the measuring portion is an integer value.
As a further limitation of the utility model, the measuring part is a rectangular block or a wedge-shaped block.
As another limitation of the utility model, the middle thickness of each cushion block measuring part is 15-19 mm.
As the utility model discloses a further inject, all carve the sign that is equipped with corresponding measurement portion specification on the handheld portion of every cushion, including middle thickness value and contact surface A, contact surface B's angle value.
As the utility model discloses a third kind is injectd, it includes that the measuring part is a set of cushion of rectangle piece, 2 wedges, 3 wedges, 5 wedges and 7 wedges respectively to every cushion measuring part's middle thickness is 15mm in this group.
As the utility model discloses a still another limited, it includes that the measuring part is a set of cushion of rectangle piece, 2 wedges, 3 wedges, 5 wedges and 7 wedges respectively to the middle thickness of every cushion measuring part is 17mm in this group.
As other limitations of the utility model, the utility model comprises two groups of cushion blocks, the measuring parts of which are respectively a rectangular block, a 2-degree wedge block and a 3-degree wedge block, wherein the middle thickness of each cushion block measuring part in the first group is 15mm, and the middle thickness of each cushion block measuring part in the second group is 17mm; the thickness of the middle of each pad in the third group was 19mm.
Since the technical scheme is adopted, compared with the prior art, the utility model, the beneficial effect who gains is:
the utility model relates to a can put into and cut standard block between bone director lower limb face and shin bone near-end osteotomy face, moreover, the steam generator is simple in structure, specification and size reasonable in design, can accurately measure out the angle that four unifications cut between bone director and the shin bone near-end osteotomy face before 90 positions of knee joint bucking cut the bone, when carrying out the TKA operation, but according to this measuring result cooperation cut bone director positioner increase accurately or reduce the external rotation angle who cuts the bone director, thereby ensure that the thighbone postcondylar can obtain a rectangle bucking clearance after cutting the bone, be favorable to knee joint bucking clearance balance, avoid adopting the simple measurement to cut the unbalanced condition of both sides soft tissue behind the bone technique, effectively promoted the operation effect.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a front view of the structure relationship of embodiment 1 of the present invention;
FIG. 2 isbase:Sub>A cross-sectional view A-A of FIG. 1;
fig. 3 is a schematic structural diagram of embodiment 2 of the present invention;
in the figure: 1. a measuring section; 2. a hand-held portion.
Detailed Description
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It is to be understood that the preferred embodiments described herein are for purposes of illustration and understanding only and are not intended to limit the invention.
Embodiment 1A cushion block for measuring angle of flexure gap
The embodiment is a standard cushion block capable of accurately measuring the angle between the lower edge surface of a 90-degree knee joint flexion osteotomy guider and the proximal tibia osteotomy surface before femoral posterior condylar osteotomy in the TKA operation. As shown in fig. 1, the pad comprises a measuring part 1 and a hand-held part 2 which are fixedly connected into a whole.
The measuring part 1 is used for measuring an included angle between the lower edge surface of the osteotomy guide and the proximal tibia osteotomy surface in the TKA operation, and is a standard block, and two opposite surfaces with the largest area are respectively used as a contact surface A in contact with the lower edge surface of the osteotomy guide and a contact surface B in contact with the proximal tibia osteotomy surface. The included angle between the contact surface A and the contact surface B is alpha, and alpha belongs to [0,7 degrees ].
In this embodiment, the angle α between the contact surface a and the contact surface B of the measuring part 1 is an integer value. When α =0 °, the measuring portion 1 of the cushion block is a rectangular block; it should be noted that when α ∈ (0,7 ° ], the measuring portion 1 of the pad block is a trapezoidal block, and when α ∈ (0,7 ° ], the measuring portion 1 of the pad block may be an isosceles trapezoidal block in which both the contact surface a and the contact surface B have a slope of α/2, or may be a right-angled trapezoidal block in which only the contact surface a or the contact surface B has a slope of α.
Furthermore, because the linear distance between the lower edge surface of the osteotomy guide and the proximal tibia osteotomy surface is generally 15-19 mm in the TKA operation, the middle thickness of the pad measuring part is correspondingly set to be 15-19 mm in the embodiment.
The hand-held portion 2 is a long block integrally formed with the measuring portion 1, and marks corresponding to the specification of the measuring portion 1 are engraved on the surface thereof. The alpha value and the middle thickness of the cushion block measuring part 1 can be obtained through the mark on the handheld part 2.
Embodiment 2A flexion gap angle measuring cushion group
As shown in fig. 3, the present embodiment is composed of a plurality of blocks with different specifications, which may be in any combination of the following forms:
a. the device comprises a group of 0-degree cushion blocks, 2-degree cushion blocks, 3-degree cushion blocks, 5-degree cushion blocks and 7-degree cushion blocks, wherein the middle thickness of each cushion block measuring part 1 in the group is 15mm;
b. the device comprises a group of 0-degree cushion blocks, 2-degree cushion blocks, 3-degree cushion blocks, 5-degree cushion blocks and 7-degree cushion blocks, wherein the middle thickness of each cushion block measuring part 1 in the group is 17mm;
c. the device comprises three groups of 0-degree cushion blocks, 2-degree cushion blocks and 3-degree cushion blocks, wherein the middle thickness of each cushion block measuring part in the first group is 15mm, and the middle thickness of each cushion block measuring part in the second group is 17mm; the thickness of the middle of each pad in the third group was 19mm.
Note that the "0 ° pad" is a pad having an angle α =0 ° between the contact surface a and the contact surface B of the measurement portion 1 disclosed in example 1; the "2 ° pad" is a pad having an angle α =2 ° between the contact surface a and the contact surface B of the measuring part 1 disclosed in embodiment 1; and so on … …
Of course, this embodiment can also be any other combination of at least one of the cushion blocks disclosed in embodiment 1.
This embodiment is specifically c combination forms. When the angle between a tibia bone-connecting surface and a lower edge surface of a bone-cutting guide device at a position where a knee joint of a patient bends by 90 degrees is measured by the aid of the angle measuring device, firstly, a femur far-end four-in-one bone-cutting guide device is installed by conventionally outward rotating by 3 degrees, an assistant holds the thigh far end, an operator holds an ankle joint to perform reverse traction at the position where the knee joint bends by 90 degrees, and the distance and the shape between the lower edge surface of the bone-cutting guide device and the proximal tibia bone-cutting surface are judged; then the cushion block with corresponding thickness is taken, the measuring part 1 is placed between the lower edge surface of the osteotomy guider and the proximal tibia osteotomy surface by means of the handheld part 2, the knee joint internal and external stress tests are carried out, if the buckling clearance angle measuring cushion block is tightly jointed between the lower edge surface of the osteotomy guider and the proximal tibia osteotomy surface and does not open, the angle between the proximal tibia osteotomy surface and the lower edge surface of the guider can be obtained, and therefore the external rotation osteotomy angle can be accurately adjusted. Finally, the external rotation angle of the osteotomy guide is increased or decreased according to the measurement result, and then subsequent osteotomy operation can be carried out.
It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and the present invention is not limited thereto, and although the present invention has been described in detail with reference to the above-mentioned embodiments, it will be apparent to those skilled in the art that modifications can be made to the technical solutions described in the above-mentioned embodiments, or some technical features can be replaced with equivalents. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a bucking clearance angle measurement cushion group which characterized in that: the device comprises at least one cushion block, wherein each cushion block comprises a measuring part and a handheld part, the measuring part is used for measuring an included angle between the lower edge surface of the knee joint flexion 90-degree osteotomy guide and the proximal tibia osteotomy surface in the TKA operation, and the handheld part is fixedly connected with the measuring part and used for placing the measuring part between the lower edge surface of the osteotomy guide and the proximal tibia osteotomy surface;
the measuring part is provided with a contact surface A for contacting with the lower edge surface of the osteotomy guide and a contact surface B for contacting with the proximal osteotomy surface of the tibia, and the included angle between the contact surface A and the contact surface B is alpha and alpha is epsilon [0,7 degrees ].
2. The buckling gap angle measuring pad set of claim 1, wherein: the angle alpha between the contact surface a and the contact surface B of the measuring part is an integer value.
3. The flexure gap angle measurement pad set of claim 2, wherein: the measuring part is a rectangular block or a wedge-shaped block.
4. The flexion gap angle measurement pad set of any of claims 1-3, wherein: the middle thickness of each cushion block measuring part is 15-19 mm.
5. The buckling gap angle measuring pad set of claim 4, wherein: and the handheld part of each cushion block is engraved with an identifier corresponding to the specification of the cushion block measuring part.
6. The flexion gap angle measurement pad set of any of claims 1-3 and 5, wherein: the device comprises a group of cushion blocks of which the measuring parts are respectively a rectangular block, a 2-degree wedge block, a 3-degree wedge block, a 5-degree wedge block and a 7-degree wedge block, and the middle thickness of each cushion block measuring part in the group is 15mm.
7. The flexion gap angle measurement pad set of any of claims 1-3 and 5, wherein: the device comprises a group of cushion blocks of which the measuring parts are respectively a rectangular block, a 2-degree wedge block, a 3-degree wedge block, a 5-degree wedge block and a 7-degree wedge block, and the middle thickness of each cushion block measuring part in the group is 17mm.
8. The flexure gap angle measuring pad set of any one of claims 1-3, 5, wherein: the measuring device comprises three groups of cushion blocks, wherein the measuring parts are respectively a rectangular block, a 2-degree wedge block and a 3-degree wedge block, the middle thickness of each cushion block measuring part in the first group is 15mm, and the middle thickness of each cushion block measuring part in the second group is 17mm; the thickness of the middle of each pad in the third group was 19mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220901823.1U CN217525283U (en) | 2022-04-19 | 2022-04-19 | Buckling clearance angle measurement cushion block group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220901823.1U CN217525283U (en) | 2022-04-19 | 2022-04-19 | Buckling clearance angle measurement cushion block group |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217525283U true CN217525283U (en) | 2022-10-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220901823.1U Expired - Fee Related CN217525283U (en) | 2022-04-19 | 2022-04-19 | Buckling clearance angle measurement cushion block group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217525283U (en) |
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2022
- 2022-04-19 CN CN202220901823.1U patent/CN217525283U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20221004 |