FR2706763A1 - Osteosynthesis plate - Google Patents
Osteosynthesis plate Download PDFInfo
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- FR2706763A1 FR2706763A1 FR9308092A FR9308092A FR2706763A1 FR 2706763 A1 FR2706763 A1 FR 2706763A1 FR 9308092 A FR9308092 A FR 9308092A FR 9308092 A FR9308092 A FR 9308092A FR 2706763 A1 FR2706763 A1 FR 2706763A1
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- plate
- bone
- plate according
- elasticity
- alloy
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
- A61L31/08—Materials for coatings
- A61L31/10—Macromolecular materials
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8085—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates with pliable or malleable elements or having a mesh-like structure, e.g. small strips
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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
- A61F2/30—Joints
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
-
- 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
- A61F2/30—Joints
- A61F2/38—Joints for elbows or knees
-
- 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
- A61F2/30—Joints
- A61F2/38—Joints for elbows or knees
- A61F2/3859—Femoral components
-
- 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
- A61F2/30—Joints
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/30878—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
-
- 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
- A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
- A61F2310/00389—The prosthesis being coated or covered with a particular material
- A61F2310/00395—Coating or prosthesis-covering structure made of metals or of alloys
- A61F2310/00407—Coating made of titanium or of Ti-based alloys
-
- 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
- A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
- A61F2310/00389—The prosthesis being coated or covered with a particular material
- A61F2310/00395—Coating or prosthesis-covering structure made of metals or of alloys
- A61F2310/00419—Other metals
- A61F2310/00431—Coating made of aluminium or of Al-based alloys
-
- 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
- A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
- A61F2310/00389—The prosthesis being coated or covered with a particular material
- A61F2310/00592—Coating or prosthesis-covering structure made of ceramics or of ceramic-like compounds
-
- 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
- A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
- A61F2310/00389—The prosthesis being coated or covered with a particular material
- A61F2310/00592—Coating or prosthesis-covering structure made of ceramics or of ceramic-like compounds
- A61F2310/00796—Coating or prosthesis-covering structure made of a phosphorus-containing compound, e.g. hydroxy(l)apatite
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2430/00—Materials or treatment for tissue regeneration
- A61L2430/02—Materials or treatment for tissue regeneration for reconstruction of bones; weight-bearing implants
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Neurology (AREA)
- Biomedical Technology (AREA)
- Engineering & Computer Science (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Vascular Medicine (AREA)
- Epidemiology (AREA)
- Prostheses (AREA)
Abstract
Description
Plaque d'ostéosynthèse"
L'invention est relative à une plaque d'ostéosynthèse destinée au traitement chirurgical des fractures.Osteosynthesis plate "
The invention relates to an osteosynthesis plate intended for the surgical treatment of fractures.
Elle concerne donc les plaques se disposant longitudinalement de part et d'autre de la zone de la fracture et dont la fixation est assurée par des vis transversales dont les tiges traversent des perçages ménagés dans la plaque et se vissent dans la corticale, traversent l'os spongieux, se vissent dans la corticale opposée ou dans un autre élément de prothèse. It therefore relates to the plates which are arranged longitudinally on either side of the fracture zone and the fixing of which is ensured by transverse screws, the rods of which pass through holes made in the plate and are screwed into the cortex, pass through the cancellous bones, are screwed in the opposite cortex or in another element of prosthesis.
Les plaques d'ostéosynthèse actuelles possèdent une très importante rigidité sur toute leur longueur et présentent à la pose et à l'usage de nombreux inconvénients. Current osteosynthesis plates have a very high rigidity over their entire length and have many disadvantages during installation and use.
La rigidité du montage est telle que, au moins dans la partie centrale de la plaque, c'est à dire au foyer de la fracture, les fragments osseux ne viennent pas en contact étroit avec cette plaque et voire même ne sont pas comprimés. Ils forment ainsi un écart interfragmentaire qui peut ne pas se combler dans le temps et retarder la consolidation, ou conduire à une pseudarthrose. The rigidity of the assembly is such that, at least in the central part of the plate, that is to say at the focal point of the fracture, the bone fragments do not come into close contact with this plate and even are not compressed. They thus form an interfragmentary gap which may not fill in time and delay consolidation, or lead to non-union.
La rigidité de la plaque sur toute la longueur engendre, au niveau de ses extrémités, une discontinuité brutale en ce qui concerne l'élasticité globale du montage. Cette discontinuité est un facteur de rupture de l'os à ces endroits. The rigidity of the plate over the entire length generates, at its ends, a sudden discontinuity with regard to the overall elasticity of the assembly. This discontinuity is a factor in the breaking of the bone at these locations.
Enfin, la rigidité de la plaque l'empêche d'amortir les différentes contraintes que le montage reçoit, en flexion, en rotation axiale et en compression, ce qui favorise la formation d'efforts de cisaillement entre la plaque et les têtes de vis, assurant sa fixation. Ces efforts provoquent le dévissage des vis, de sorte que, si la consolidation osseuse n'est pas acquise quelques mois après la pose de la plaque, le montage devient inopérant et nécessite une nouvelle intervention pour être remis en état. Finally, the rigidity of the plate prevents it from absorbing the various stresses that the assembly receives, in bending, in axial rotation and in compression, which promotes the formation of shear forces between the plate and the screw heads, ensuring its fixation. These efforts cause the screws to be unscrewed, so that, if bone consolidation is not acquired a few months after the placement of the plate, the assembly becomes inoperative and requires a new intervention to be repaired.
La présente invention a pour but de remédier à ces inconvénients en fournissant une plaque à élasticité variable procurant une ostéosynthèse dynamique. Cette plaque est réalisée dans un alliage métallique qui, ayant un module d'élasticité proche de celui de l'os, a une épaisseur comprise entre 3,5 et 4,5 mm et comporte des extrémités amincies en biseau. The present invention aims to remedy these drawbacks by providing a plate with variable elasticity providing dynamic osteosynthesis. This plate is made of a metal alloy which, having a modulus of elasticity close to that of the bone, has a thickness of between 3.5 and 4.5 mm and has tapered tapered ends.
Grâce à sa structure et à sa forme, cette plaque présente une possibilité de déformation élastique qui va en croissant depuis sa partie centrale vers chacune de ses extrémités. Thanks to its structure and its shape, this plate presents a possibility of elastic deformation which increases from its central part towards each of its ends.
Dans une forme d'exécution de l'invention, chaque extrémité amincie comporte, au niveau de son raccordement avec le corps, au moins une rainure transversale débouchant de l'une de ses grandes faces et comportant un fond arrondi. In one embodiment of the invention, each thinned end comprises, at its connection with the body, at least one transverse groove opening out from one of its large faces and comprising a rounded bottom.
Cet agencement, rendant encore plus souples les extrémités en leur donnant une élasticité proche de celle de l'os, permet de réduire considérablement la discontinuité plaque-os, et de supprimer tout risque de rupture de l'os. This arrangement, making the ends even more flexible by giving them an elasticity close to that of the bone, makes it possible to considerably reduce the bone-plate discontinuity, and to eliminate any risk of breaking the bone.
Par ailleurs, l'élasticité variable de la plaque procure un effet amortisseur limitant le déserrage des vis. Furthermore, the variable elasticity of the plate provides a damping effect limiting the loosening of the screws.
D'autres caractéristiques et avantages ressortiront de la description qui suit en référence au dessin schématique annexé, représentant à titre d'exemple non limitatif, une forme d'exécution de cette plaque. Other characteristics and advantages will emerge from the description which follows with reference to the appended diagrammatic drawing, representing by way of nonlimiting example, an embodiment of this plate.
Figure 1 est une vue en perspective montrant une forme de réalisation de cette plaque,
Figure 2 est une vue partielle en coupe transversale montrant, à échelle agrandie, l'une des extrémités de la plaque,
Figure 3 est une vue schématique en coupe transversale représentant une plaque lorsqu'elle est mise en place sur un foyer de fracture,
Figure 4 est une vue en coupe suivant IV-IV de figure 3.FIG. 1 is a perspective view showing an embodiment of this plate,
FIG. 2 is a partial view in cross section showing, on an enlarged scale, one of the ends of the plate,
FIG. 3 is a schematic cross-section view showing a plate when it is placed on a fracture site,
Figure 4 is a sectional view along IV-IV of Figure 3.
Dans ce dessin, la référence numérique 2 désigne la plaque d'ostéosynthèse qui, de façon connue, est rectiligne et est traversée de part en part par des perçages 3. Dans la forme d'exécution représentée, ces perçages sont alignés mais il est évident qu'ils peuvent être aussi disposés en quinconce. Les perçages extrêmes 3 forment deux boutonnières pour coopérer avec les moyens d'accrochage d'un outil de pose, et par exemple, d'un clavier compression. In this drawing, the reference numeral 2 designates the osteosynthesis plate which, in known manner, is rectilinear and is traversed right through by holes 3. In the embodiment shown, these holes are aligned but it is obvious that they can also be staggered. The extreme holes 3 form two buttonholes to cooperate with the attachment means of a fitting tool, and for example, of a compression keyboard.
Selon l'invention, cette plaque est réalisée dans un alliage métallique ayant un module d'élasticité proche de celui de l'os, et en particulier dans un alliage de titane, de type TA6V comportant 90 % de titane, 6 % d'aluminium et 4 % de vanadium, ayant un module d'élasticité de l'ordre de 1 1 000 daN/mm2. According to the invention, this plate is made of a metal alloy having a modulus of elasticity close to that of the bone, and in particular in a titanium alloy, of TA6V type comprising 90% of titanium, 6% of aluminum and 4% vanadium, having a modulus of elasticity of the order of 1 1000 daN / mm2.
Après forgeage et usinage, cet alliage est soumis à une opération d'hypertrempe. L'épaisseur e de cette plaque, mesurée dans sa partie centrale, comme montré à la figure 2, est comprise entre 3,5 et 4,5 mm.After forging and machining, this alloy is subjected to a hyperhardening operation. The thickness e of this plate, measured in its central part, as shown in FIG. 2, is between 3.5 and 4.5 mm.
A chacune de ses extrémités, la plaque est amincie en biseau, c'est à dire comporte au moins, du côté de sa face externe 5, une face pentue 6 réduisant son épaisseur et augmentant localement son élasticité. At each of its ends, the plate is tapered at a bevel, that is to say comprises at least, on the side of its external face 5, a sloping face 6 reducing its thickness and locally increasing its elasticity.
Avantageusement, la face pentue 6, ou chacune des faces pentues, se raccorde à la face externe 5 du corps de la plaque par l'intermédiaire d'une gorge transversale 7 à fond arrondi. Une telle gorge augmente considérablement l'élasticité de chacune des extrémités de la plaque qui possède ainsi localement une élasticité très voisine de celle de l'os. Cet agencement supprime donc toute discontinuité entre la plaque et l'os et évite des fractures d'os au niveau des extrémités de la plaque.Advantageously, the sloping face 6, or each of the sloping faces, is connected to the external face 5 of the body of the plate by means of a transverse groove 7 with a rounded bottom. Such a groove considerably increases the elasticity of each of the ends of the plate which thus locally has an elasticity very close to that of the bone. This arrangement therefore eliminates any discontinuity between the plate and the bone and avoids bone fractures at the ends of the plate.
Cette plaque comporte au moins sur sa face concave 8, destinée à venir en contact avec l'os, un revêtement 16 en matériau augmentant sa rugosité et favorisant l'ostéogénèse, tels que titane poreux, alumine, céramique, hydroxy-apatite. Avec ce revêtement, la plaque colle littéralement à l'os avant vissage. En outre, cette adhérence diminue par trois les contraintes en cisaillement subi par les vis et évite les dévissages intempestifs. This plate comprises at least on its concave face 8, intended to come into contact with the bone, a coating 16 of material increasing its roughness and promoting osteogenesis, such as porous titanium, alumina, ceramic, hydroxyapatite. With this coating, the plate literally sticks to the bone before screwing. In addition, this adhesion reduces by three the shear stresses undergone by the screws and avoids untimely unscrewing.
Comme montré à la figure 2, lorsque les alésages 3, ménagés dans la plaque, comportent des cuvettes coniques 9 pour les têtes de vis 15, ces cuvettes sont recouvertes par une couche 10 d'un matériau compressible et à fort coefficient de glissement tels que du polytétrafluorétylène. Cette couche favorise le glissement des têtes de vis dans leur logement, donc leur serrage, et joue un rôle de matériau amortisseur s'ajoutant à l'amortissement dynamique procuré par l'élasticité de la plaque. As shown in FIG. 2, when the bores 3, formed in the plate, include conical cups 9 for the screw heads 15, these cups are covered by a layer 10 of a compressible material and with a high sliding coefficient such as polytetrafluoroetylene. This layer promotes the sliding of the screw heads in their housing, therefore their tightening, and plays a role of damping material adding to the dynamic damping provided by the elasticity of the plate.
L'élasticité de la plaque évite l'amincissement de la corticale diaphysaire contre laquelle elle est plaquée, corticale gardant une meilleure densité minérale. The elasticity of the plate prevents the thinning of the diaphyseal cortex against which it is pressed, cortex keeping a better mineral density.
La flexibilité variable de la plaque diminue considérablement la concentration des contraintes entre les extrémités de la plaque et la diaphyse et supprime tout risque de rupture de l'os. The variable flexibility of the plate considerably reduces the concentration of stresses between the ends of the plate and the diaphysis and eliminates any risk of breaking the bone.
Enfin, par son grand module d'élasticité, cette plaque joue un rôle d'amortisseur, ce qui réduit les contraintes exercées sur les vis 15 et limite les risques de déserrage de ces vis. Finally, by its large modulus of elasticity, this plate acts as a shock absorber, which reduces the stresses exerted on the screws 15 and limits the risks of loosening of these screws.
La figure 3 montre que, grâce à son élasticité, la plaque peut, au niveau du foyer de fracture 11, être amenée au contact de la corticale 12 pour épouser au maximum cette dernière et soulager ainsi la corticale opposée. Ce montage favorise l'ostéogénèse au niveau du foyer et permet de réduire considérablement le temps de consolidation osseuse. Dans la forme d'exécution représentée à la figure 3, les extrémités de la plaque sont liées, pour celle supérieure à une prothèse de hanche 13, et pour celle inférieure à la tige fémorale 14 d'une prothèse de genou, mais il est évident que cette plaque peut être utilisée avec des fragments osseux sans coopérer avec un autre élément de prothèse. Figure 3 shows that, thanks to its elasticity, the plate can, at the fracture site 11, be brought into contact with the cortex 12 to marry the latter as much as possible and thus relieve the opposite cortex. This arrangement promotes osteogenesis at the focal point and makes it possible to considerably reduce the time for bone consolidation. In the embodiment represented in FIG. 3, the ends of the plate are linked, for that superior to a hip prosthesis 13, and for that inferior to the femoral stem 14 of a knee prosthesis, but it is obvious that this plate can be used with bone fragments without cooperating with another prosthesis element.
Cette plaque à élasticité variable autorise la mise en charge précoce du membre opéré, réalisant ainsi une ostéosynthèse dynamique, diminuant la durée de l'incapacité fonctionnelle du patient et favorisant la formation du cal osseux, sans risque pour le montage de l'ostéosynthèse ainsi réalisée, en raison de ses effets d'amortissement au niveau du foyer de fracture. This variable elasticity plate allows early loading of the operated limb, thus achieving dynamic osteosynthesis, reducing the duration of the patient's functional incapacity and promoting the formation of bone callus, without risk for mounting the osteosynthesis thus performed. , due to its damping effects at the fracture site.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9308092A FR2706763A1 (en) | 1993-06-25 | 1993-06-25 | Osteosynthesis plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9308092A FR2706763A1 (en) | 1993-06-25 | 1993-06-25 | Osteosynthesis plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2706763A1 true FR2706763A1 (en) | 1994-12-30 |
| FR2706763B1 FR2706763B1 (en) | 1995-08-11 |
Family
ID=9448812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR9308092A Granted FR2706763A1 (en) | 1993-06-25 | 1993-06-25 | Osteosynthesis plate |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2706763A1 (en) |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997009000A1 (en) * | 1995-09-06 | 1997-03-13 | Synthes Ag Chur | Bone plate |
| WO2003032851A1 (en) * | 2001-10-18 | 2003-04-24 | Ldr Medical | Plate for osteosynthesis device and preassembly method |
| WO2003032850A1 (en) * | 2001-10-18 | 2003-04-24 | Ldr Medical | Progressive approach osteosynthesis device and preassembly method |
| NL1021137C2 (en) * | 2002-07-23 | 2004-01-27 | Fondel Finance B V | Support element for attachment to bone. |
| US7229445B2 (en) | 2004-06-21 | 2007-06-12 | Synthes (Usa) | Bone plate with bladed portion |
| EP2016918A1 (en) | 2007-07-18 | 2009-01-21 | Mario Angel Pizzicara | Blocked plate with combined holes, stability control and double angulation, to join fractured bones |
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| FR2833151B1 (en) | 2001-12-12 | 2004-09-17 | Ldr Medical | BONE ANCHORING IMPLANT WITH POLYAXIAL HEAD |
| FR2859095B1 (en) | 2003-09-01 | 2006-05-12 | Ldr Medical | BONE ANCHORING IMPLANT WITH A POLYAXIAL HEAD AND METHOD OF PLACING THE IMPLANT |
| US8105367B2 (en) | 2003-09-29 | 2012-01-31 | Smith & Nephew, Inc. | Bone plate and bone plate assemblies including polyaxial fasteners |
| JP5270339B2 (en) | 2005-07-25 | 2013-08-21 | スミス アンド ネフュー インコーポレーテッド | System and method for using a multi-axis plate |
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| WO1989009037A1 (en) * | 1988-04-01 | 1989-10-05 | The Trustees Of Columbia University In The City Of | Dual-taper, asymmetric hole placement in reconstruction and fracture plates |
| FR2637494A1 (en) * | 1988-10-06 | 1990-04-13 | Legre Gerard | Femoral element for a hip endoprosthesis |
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| FR2412300A1 (en) * | 1977-12-21 | 1979-07-20 | Serole Michelle | Osteosynthesis plate of composite material - has modulus of elasticity similar to that of bone and roughened contact surface |
| DE3803435C1 (en) * | 1988-02-05 | 1989-09-21 | Ethicon Gmbh & Co Kg, 2000 Norderstedt, De | Implanted splint for rib fractures |
| WO1989009037A1 (en) * | 1988-04-01 | 1989-10-05 | The Trustees Of Columbia University In The City Of | Dual-taper, asymmetric hole placement in reconstruction and fracture plates |
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| WO1997009000A1 (en) * | 1995-09-06 | 1997-03-13 | Synthes Ag Chur | Bone plate |
| WO2003032851A1 (en) * | 2001-10-18 | 2003-04-24 | Ldr Medical | Plate for osteosynthesis device and preassembly method |
| WO2003032850A1 (en) * | 2001-10-18 | 2003-04-24 | Ldr Medical | Progressive approach osteosynthesis device and preassembly method |
| FR2831048A1 (en) * | 2001-10-18 | 2003-04-25 | Ldr Medical | Osteosynthesis device for spinal support or correction comprising implant screwed into vertebrae and plate joined to implant without preventing implant screwing rotation |
| FR2831049A1 (en) * | 2001-10-18 | 2003-04-25 | Ldr Medical | Osteosynthesis device comprising implants screwed into two vertebra and plate used to hold and displace the spine |
| JP2005523046A (en) * | 2001-10-18 | 2005-08-04 | エル・デ・エール・メデイカル | Incremental osteosynthesis device and pre-assembly method |
| CN100464718C (en) * | 2002-07-23 | 2009-03-04 | 丰德尔财经公司 | Supporting element for attachment to bone |
| NL1021137C2 (en) * | 2002-07-23 | 2004-01-27 | Fondel Finance B V | Support element for attachment to bone. |
| WO2004021905A1 (en) * | 2002-07-23 | 2004-03-18 | Fondel Finance B.V. | Supporting element for attachement to bone |
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| US10653466B2 (en) | 2003-05-30 | 2020-05-19 | DePuy Synthes Products, Inc. | Bone plate |
| US11259851B2 (en) | 2003-08-26 | 2022-03-01 | DePuy Synthes Products, Inc. | Bone plate |
| US10342586B2 (en) | 2003-08-26 | 2019-07-09 | DePuy Synthes Products, Inc. | Bone plate |
| US10335211B2 (en) | 2004-01-26 | 2019-07-02 | DePuy Synthes Products, Inc. | Highly-versatile variable-angle bone plate system |
| US11291484B2 (en) | 2004-01-26 | 2022-04-05 | DePuy Synthes Products, Inc. | Highly-versatile variable-angle bone plate system |
| US7229445B2 (en) | 2004-06-21 | 2007-06-12 | Synthes (Usa) | Bone plate with bladed portion |
| US10751187B2 (en) | 2007-06-08 | 2020-08-25 | Ldr Medical | Intersomatic cage, intervertebral prosthesis, anchoring device and implantation instruments |
| EP2016918A1 (en) | 2007-07-18 | 2009-01-21 | Mario Angel Pizzicara | Blocked plate with combined holes, stability control and double angulation, to join fractured bones |
| US9980760B2 (en) | 2014-11-19 | 2018-05-29 | Paragon 28, Inc. | Step off bone plates, systems, and methods of use |
| EP3023068A3 (en) * | 2014-11-19 | 2016-08-31 | Paragon 28, Inc. | Bone plates, plate alignment systems, and methods of use |
| US10820930B2 (en) | 2016-09-08 | 2020-11-03 | DePuy Synthes Products, Inc. | Variable angle bone plate |
| US10905476B2 (en) | 2016-09-08 | 2021-02-02 | DePuy Synthes Products, Inc. | Variable angle bone plate |
| US10624686B2 (en) | 2016-09-08 | 2020-04-21 | DePuy Synthes Products, Inc. | Variable angel bone plate |
| US11529176B2 (en) | 2016-09-08 | 2022-12-20 | DePuy Synthes Products, Inc. | Variable angle bone plate |
| US11026727B2 (en) | 2018-03-20 | 2021-06-08 | DePuy Synthes Products, Inc. | Bone plate with form-fitting variable-angle locking hole |
| US10772665B2 (en) | 2018-03-29 | 2020-09-15 | DePuy Synthes Products, Inc. | Locking structures for affixing bone anchors to a bone plate, and related systems and methods |
| US11013541B2 (en) | 2018-04-30 | 2021-05-25 | DePuy Synthes Products, Inc. | Threaded locking structures for affixing bone anchors to a bone plate, and related systems and methods |
| US10925651B2 (en) | 2018-12-21 | 2021-02-23 | DePuy Synthes Products, Inc. | Implant having locking holes with collection cavity for shavings |
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|---|---|
| FR2706763B1 (en) | 1995-08-11 |
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