DE10123124C1 - Ankle joint prosthetic has plate part attached to tibia part provided with curved recesses cooperating with curved bearing surfaces of talus part - Google Patents

Ankle joint prosthetic has plate part attached to tibia part provided with curved recesses cooperating with curved bearing surfaces of talus part

Info

Publication number
DE10123124C1
DE10123124C1 DE2001123124 DE10123124A DE10123124C1 DE 10123124 C1 DE10123124 C1 DE 10123124C1 DE 2001123124 DE2001123124 DE 2001123124 DE 10123124 A DE10123124 A DE 10123124A DE 10123124 C1 DE10123124 C1 DE 10123124C1
Authority
DE
Grant status
Grant
Patent type
Prior art keywords
part
tibia
talus
curved
plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE2001123124
Other languages
German (de)
Inventor
Hans Grundei
Christian Weber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ORTHODYNAMICS GMBH, DE
Original Assignee
ESKA Implants GmbH and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Grant date

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/42Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes
    • A61F2/4202Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes for ankles
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2002/30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30331Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
    • A61F2002/30362Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit with possibility of relative movement between the protrusion and the recess
    • A61F2002/30364Rotation about the common longitudinal axis
    • A61F2002/30365Rotation about the common longitudinal axis with additional means for limiting said rotation
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2002/30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30383Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by laterally inserting a protrusion, e.g. a rib into a complementarily-shaped groove
    • A61F2002/3039Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by laterally inserting a protrusion, e.g. a rib into a complementarily-shaped groove with possibility of relative movement of the rib within the groove
    • A61F2002/30392Rotation
    • A61F2002/30393Rotation with additional means for limiting said rotation
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2002/30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30383Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by laterally inserting a protrusion, e.g. a rib into a complementarily-shaped groove
    • A61F2002/3039Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by laterally inserting a protrusion, e.g. a rib into a complementarily-shaped groove with possibility of relative movement of the rib within the groove
    • A61F2002/30398Sliding
    • A61F2002/304Sliding with additional means for limiting said sliding
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2002/30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30535Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30604Special structural features of bone or joint prostheses not otherwise provided for modular
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2220/00Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2220/00Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2220/0033Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit

Abstract

The prosthetic has a tibia part (1), implanted in the tibia and a talus part (2), implanted in the talus, a removable plate part (3) attached to the tibia part having 2 curved recesses (5,6) separated by a central region (4) facing towards the talus part, for cooperating with curved bearing surfaces (7,8) of the latter. The plate part is attached to the tibia part via a pivot pin (10) allowing it to pivot through a limited angle of between -5 degrees and +5 degrees.

Description

Die vorliegende Erfindung betrifft eine Sprunggelenkendoprothese. The present invention relates to a total ankle. Eine gattungsgemäße Sprunggelenkendoprothese weist einen in der Tibia implantierbaren Tibiateil, ein in den Talus implantierbaren Talusteil sowie ein mit dem Tibiateil lösbar verbindbares Plateauteil mit zwei taluswärts zugewandten, von einem Mittelsteg getrennten Ausmuldungen, die als Gleitflächen für entsprechend konvex ausgebildete, auf die tibiawärts zugewandte Oberfläche des Talusteils ausgeformte Gleitkufen dienen, welche von einer dem Mittelsteg des Plateauteils entsprechenden Rinne getrennt sind. A generic total ankle comprises an implantable in the tibia tibia part, a implantable in the talus Talusteil and a releasably connectable to the tibia part plateau part with two taluswärts facing, separated by a central web hollowing, formed as sliding surfaces for correspondingly convex, on the tibia facing surface of serve Talusteils molded runners which are separated by a central web of the plateau portion of the corresponding groove.

Eine derartige Sprunggelenkendoprothese ist bekannt aus der DE 39 04 004 C2. Such a total ankle is known from DE 39 04 004 C2.

Diese Sprunggelenkendoprothese hat sich in der Praxis sehr bewährt. This total ankle has proven itself in practice very much. Als problematisch hat sich die Starrheit des Gelenkes herausgestellt in dem Moment, wenn durch beispielsweise eine Fehlimplantation des Tibiateils das Gesamtgelenk ständig unter Spannung steht. One problem is the rigidity of the joint has been found in the moment when the whole joint is by implantation, for example, a failure of the tibia part are constantly under tension. Hierfür ist in dem bekannten Gelenk keine Kompensationsmöglichkeit vorgesehen. For this purpose, in the known joint no compensation possibility is provided.

Vor diesem Hintergrund ist es nun die Aufgabe der vorliegenden Erfindung, die gattungsgemäße Sprunggelenkendoprothese so weiterzubilden, daß eine Kompensationsmöglichkeit für Fehlimplantationen des Tibiateils geschaffen wird. Against this background it is the object of the present invention to further develop the generic total ankle so that a compensation possibility for faulty implantation of the tibial part is provided.

Gelöst wird diese Aufgabe durch die kennzeichnenden Merkmale des Anspruches 1 bei einer gattungsgemäßen Sprunggelenksendoprothese. This object is achieved by the characterizing features of claim 1 with a generic ankle joint prosthesis.

Vorteilhafte Weiterbildungen ergeben sich aus den Unteransprüchen. Advantageous further developments are evident from the dependent claims.

Demnach ist erfindungsgemäß vorgesehen, daß das Plateauteil mit dem Tibiateil so verbindbar ist, daß es - ausgehend von der Nulllage - in einem Winkel im Bereich von -5° bis +5° anschlagsbegrenzt um die Hochachse eines in das Tibiateil eingelassenen Zapfens verschwenkbar gelagert ist. Accordingly, the invention provides that the platform member to the tibia part is so connected that it - is pivotably mounted at an angle in the range of -5 ° to + 5 ° in stop-limited about the vertical axis of a set into the tibia pin - starting from the zero position.

Diese Verschwenk- oder Rotationsmöglichkeit kompensiert Fehlimplantationen, das heißt, Implantationen des Tibiateils mit nicht ganz korrekter Orientierung im großen Umfang. This swiveling or rotation possibility compensated faulty implants, ie, implants of the tibia with not quite correct orientation on a large scale. Die Fehlimplantationen kommen dadurch zustande, daß bei den während der Operationen ohnehin eingeschränkten Verhältnissen die Größenverhältnisse relativ klein sind und Abweichungen von nur wenigen Graden von der Idealachse der Implantation Auswirkungen auf das Gesamtgelenk verursachen. The faulty implants arise from the fact that in the already limited during the operations conditions the proportions are relatively small and cause deviations of only a few degrees from the ideal axis of implantation effects on the overall joint. Die Rotationsmöglichkeit bei dem erfindungsgemäßen Sprunggelenk gestattet nun eine Ausgleichsbewegung des Plateauteils an dem Tibiateil und hilft so, gelenkinterne Spannungen zu vermeiden bzw. abzubauen. The possibility of rotation in the inventive ankle now permits a compensating movement of the plateau part of the tibia part, thus helping to prevent joint internal stresses or reduce. Kommt es aufgrund einer Fehlimplantation zu Spannungen in den Bändern, so sucht sich das Plateauteil selbsttätig die Lage geringster Spannung, das heißt, das Gelenk stellt sich selbsttätig auf einen möglichst spannungsfreien Zustand ein. If, due to mis-implantation voltages in the coils, then the platform member automatically searches the position of the lowest voltage, that is, the joint is set automatically to a tension-free as possible state. Der Patient bemerkt dies durch einen beschwerdefreien physiologischen Bewegungsablauf einerseits und einer weitgehenden Schmerzfreiheit des Bandapparates andererseits. The patient notices this by a symptom-free physiological trajectory on the one hand and an extensive freedom from pain of the ligaments on the other hand.

Konstruktiv weist das Tibiateil besonders bevorzugt talusseitig eine kastenförmige Begrenzungskante auf, die den Anschlag für die Verschwenkbewegung des Plateauteils bildet. Structurally, the tibia part talusseitig particularly preferably a box-shaped boundary edge which forms the stop for the pivoting movement of the plateau part. Dabei weist das Plateauteil einen Schwenksockel auf, dem sich der Abschnitt mit den Ausmuldungen anschließt, wobei die Höhe des Schwenksockels wenigstens gleich der Höhe der Begrenzungskante ist und der Zapfen des Tibiateils in eine entsprechende Ausnehmung im Schwenksockel greift. In this case, the plateau portion has a swivel base on which the portion contiguous with the hollowing, the height of the swivel base is at least equal to the height of the boundary edge and the pin of the tibia part engages in a corresponding recess in the pivot base.

Die kastenförmige Begrenzungskante kann gemäß einer bevorzugten Ausführungsform geschlossen, das heißt, voll umlaufend sein. The box-shaped boundary edge can be closed according to a preferred embodiment, that is, to be fully circumferential. In diese dadurch gebildeten Einfassung wird dann das Plateauteil gesetzt. the plateau part is then placed in this enclosure formed thereby. Der angegebene Verschwenkbereich wird erzielt durch eine entsprechende Formgebung des Schwenksockels, welcher bei einer Auslenkung von -5° bzw. +5° an die Begrenzungskante stößt, so daß die für weitere Verschwenkbewegung unterbunden wird. The mentioned pivoting is achieved by a corresponding shaping of the swivel base, which abuts upon a deflection of -5 ° and + 5 ° at the boundary edge, so that the pivoting movement is inhibited for more.

Gemäß einer zweiten bevorzugten Ausführungsform kann die kastenförmige Begrenzungskante an einer Seite offen sein, so daß der Schwenksockel in den offenen Begrenzungsbereich hinein geschoben werden kann. According to a second preferred embodiment, the box-shaped boundary edge on one side may be open, so that the swivel base in the open bounding area can be pushed. Hierzu ist in dem Schwenksockel ein Langloch eingelassen, in welchem der Zapfen des Tibiateils während des Einsatzes des Plateauteils in das Tibiateil führbar ist und dessen Ende ein Anschlag für den Zapfen in der Endstellung des Plateauteils sowie das Zentrum der Verschwenkbewegung bildet. For this purpose in the pivot socket a slot is recessed, in which the pin of the tibia part during use of the platform part in the tibia part can be guided and the end of which forms a stop for the pin in the end position of the plateau portion and the center of the pivoting movement. Das Plateauteil wird mit seinem Schwenksockel also mit dem eingelassenen Langloch an den Zapfen gesetzt und in den offenen Umgrenzungsbereich hineingeschoben, so lange, bis der Zapfen am Ende des Langloches anschlägt. The plateau part is thus set with its pivot base with the recessed slot on the pins and pushed into the open boundary region, until the pin abuts the end of the slot. In dieser Lage kann das Plateauteil mit dem Zapfen als Schwenkachse in gewünschter Weise verschwenken. In this position, the platform member can pivot with the pin as a pivot axis in a desired manner. Der Vorteil dieser Ausführungsform ist ein einfacheres Austauschen eines etwaig verschleißten Plateauteils. The advantage of this embodiment is a simpler replacement of a possible verschleißten plateau part.

Zur Erhöhung der Stabilität des Gesamtgelenks ist besonders bevorzugt vorgesehen, daß an der medialen Ausmuldung des Plateauteils eine Antiluxationskante angeformt ist. To increase the stability of the overall joint is particularly preferred provided that a Antiluxationskante is formed on the medial Ausmuldung the plateau part. Diese Antiluxationskante umschließt die medial ausgeformte Gleitkufe stärker als dies im Bereich der lateralen Gleitkufe der Fall ist und verhindert so eine Luxation nach medial. This Antiluxationskante surrounds the medial shaped skid stronger than is the case in the region of the lateral skid, thus preventing dislocation medially. Diese Maßnahme unterstützt die Rotationseigenschaft des Rotationsteils am Tibiateil, in dem eine etwaige Luxationsneigung bei Verschwenkungen in Grenzbereichen unter Umständen zu einer erhöhten Luxationsneigung führen könnten. This measure supports the rotation property of the rotary member to the tibial component in which a possible luxation at pivotal movements in border areas could possibly lead to increased luxation.

Die Erfindung wird beispielhaft anhand der nachfolgend erläuterten Zeichnungsfiguren näher erläutert. The invention is illustrated by way of example with reference to the drawing figures described below. Hierbei zeigt: Here shows:

Fig. 1 eine perspektivische Ansicht der Einzelteile der Sprunggelenkendoprothese im Blick von medial-lateral, Fig. 1 is a perspective view of the individual parts of the total ankle in view of medial-lateral,

Fig. 2 eine entsprechende Darstellung wie Fig. 1 gesehen von medial- dorsal, Fig. 2 is a corresponding view as Fig. 1 seen from medial dorsal,

Fig. 3 eine Schnittansicht durch die Komponenten der Endoprothese, Fig. 3 is a sectional view through the components of the endoprosthesis,

Fig. 4 eine Schnittansicht von oben entlang der Linie IV-IV in Fig. 3, Fig. 4 is a sectional top view taken along the line IV-IV in Fig. 3,

Fig. 5 eine ähnliche Ansicht wie Fig. 4, ventral gesehen in einer anderen Ausführungsform, Fig. 5 is a view similar to Fig. 4, ventral seen in another embodiment,

Fig. 6 eine ähnliche Ansicht wie Fig. 5 mit einer noch anderen Ausführungsform des Plateauteils, und Fig. 6 is a view similar to Fig. 5 with a still another embodiment of the plateau portion, and

Fig. 7 eine Schnittansicht entlang einer Linie VII-VII in Fig. 6. Fig. 7 is a sectional view taken along a line VII-VII in Fig. 6.

Nachfolgend sind gleiche Teile mit denselben Bezugszeichen versehen. Hereinafter, like components are denoted by the same reference numerals.

Einen ersten Überblick verschaffen die Fig. 1 und 2, die die drei Komponenten der Sprunggelenkendoprothese, das Tibiateil 1 , das Talusteil 2 und das Plateauteil 3 in perspektivischer Darstellung aus unterschiedlichen Richtungen zeigen. A first gain an overview of FIGS. 1 and 2, showing the three components of the total ankle, the tibia part 1, the Talusteil 2 and the plateau portion 3 in a perspective view from different directions.

Das Plateauteil 3 weist zwei taluswärts zugewandte Ausmuldungen 5 und 6 auf, die von einem Mittelstege 4 getrennt sind. The plateau portion 3 comprises two facing taluswärts hollowing 5 and 6 which are separated by a central webs. 4 Die Ausmuldungen 5 und 6 dienen als Gleitflächen für entsprechend konvex ausgebildete Gleitkufen 7 und 8 , die auf der tibiawärts zugewandten Oberfläche des Talusteils 2 ausgeformt sind. The hollowing 5 and 6 serving as sliding surfaces for corresponding convex skids 7 and 8, which are formed on the surface of the tibia facing Talusteils. 2 Die Gleitkufen 7 und 8 sind von einer dem Mittelsteg 4 des Plateauteils 3 entsprechenden Rinne 9 voneinander getrennt. The skids 7 and 8, 9 are separated from one another by a central web 4 of the plateau portion 3 corresponding groove. Dar Plateauteil 3 ist vorliegend gebildet aus einem Schwenksockel 12 sowie aus einem Abschnitt 13 , in welchem die Ausmuldungen 5 und 6 ausgebildet sind. Dar plateau portion 3 is formed in the present of a pivot base 12 as well as a portion 13 in which the hollowing formed 5 and 6. FIG. Der Schwenksockel 12 ist dazu konzipiert, mit dem Tibiateil 1 an dessen Unterseite zusammenzuarbeiten. The swivel base 12 is designed to cooperate with the tibial component 1 at its underside. Hierzu weist das Tibiateil 1 talusseitig eine kastenförmige Begrenzungskante 11 auf. For this purpose, the tibia part 1 talusseitig on a box-shaped boundary edge. 11 Der Schwenksockel 12 wird in die Umfassung der Begrenzungskante 11 geschoben. The swivel base 12 is pushed into the enclosure of the boundary edge. 11 Allerdings weist das Tibiateil 1 in diesem Bereich einen Zapfen 10 auf, um den das Plateauteil 3 nach Zusammenbau der Endoprothese in einem Winkel α ( Fig. 4, Fig. 7) im Bereich von -5° bis +5° schwenkbar gelagert sein soll. However, the tibial component 1 in this area, a pin 10, around which the platform member is to be stored for 3 after assembly of the endoprosthesis at an angle α (Fig. 4, Fig. 7) in the range of -5 ° to + 5 ° swiveling. Hierzu ist in den Schwenksockel 12 ein Langloch 15 ( Fig. 2, Fig. 4) vorgesehen, entlang dessen der Zapfen 10 beim Einsetzen des Plateauteils 3 in die Umfassung durch die Begrenzungskante 11 geführt wird. To this end, an elongated hole 15 (Fig. 2, Fig. 4) in the pivot pedestal 12 is provided which is guided along which the pin 10 upon insertion of the plateau portion 3 into the enclosure through the boundary edge 11. Am Ende des Langlochs 15 findet der Zapfen 10 seinen Anschlag. At the end of the long hole 15 of the pin 10 finds its stop. Hierdurch findet das Plateauteil 3 seine Schwenkachse in Form des Zapfens 10 . Hereby is the plateau portion 3 its pivot axis in the form of the pin 10th

Die Formgebung des Schwenksockels 12 bestimmt nun maßgeblich die Größe des Verschwenkwinkels α, dadurch, daß ab einem Winkel, der < α wäre, die Außenkonturen des Schwenksockels 12 an der Begrenzungskante 11 zum Anschlag kommen. The shaping of the swivel pedestal 12 is now largely determines the size of the pivot angle α, characterized in that from an angle that would <α, the outer contours of the swivel base 12 come to stop at the boundary edge. 11

Fig. 3 zeigt eine Schnittansicht durch das zusammengesetzte Implantat mit den vorbeschriebenen Eigenschaften. Fig. 3 shows a sectional view through the assembled implant having the above properties. Vorliegend ist noch dargestellt, wie an der medialen Ausmuldung 6 im Plateauteil 3 eine Antiluxationskante 16 angeformt ist, um dem Gesamtgelenk eine noch höhere Gesamtstabilität zu verleihen. Present is also shown as on the medial Ausmuldung 6 in the plateau portion 3 a Antiluxationskante 16 is formed in order to impart the overall joint even greater overall stability.

Fig. 5 zeigt eine ganz ähnliche Ansicht wie Fig. 3, allerdings mit fehlender Antiluxationskante. Fig. 5 shows a very similar view as Fig. 3, but with missing Antiluxationskante. Diese könnte beispielsweise fortgelassen werden bei einem kleineren Schwenkbereich als der bereits oben angegebene. This could be omitted, for example, at a smaller swivel range than the already above mentioned.

Fig. 6 zeigt eine ähnliche Ansicht wie Fig. 5, allerdings mit einer umlaufenden Einfassung der kastenförmigen Begrenzungskante 11 ' ( Fig. 7). Fig. 6 shows a view similar to Fig. 5, but with a peripheral rim of the box-shaped boundary edge 11 '(Fig. 7). Hier wird der Schwenksockel 12 des Plateauteils 3 vollständig von der Begrenzungskante 11 ' umfaßt. Here, the swivel base 12 of the plateau portion 3 'comprises completely from the boundary edge. 11 Der Zapfen 10 findet sein Widerlager in der Ausnehmung 14 in dem Plateauteil 3 . The pin 10 shall be abutment in the recess 14 in the platform member. 3 Auch hier liegen die Außenkonturen des Schwenksockels 12 die Größe des Verschwenkbereichs fest. Again, the outer contours of the swivel base 12 are the size of the pivoting range.

Claims (4)

  1. 1. Sprunggelenkendoprothese, aufweisend ein in der Tibia implantierbaren Tibiateil ( 1 ), ein in den Talus implantierbaren Talusteil ( 2 ) sowie ein mit dem Tibiateil ( 1 ) lösbar verbindbares Plateauteil ( 3 ) mit zwei taluswärts zugewandten, von einem Mittelsteg ( 4 ) getrennten Ausmuldungen ( 5 , 6 ), die als Gleitflächen für entsprechend konvex ausgebildete, auf die tibiawärts zugewandte Oberfläche des Talusteils ( 2 ) ausgeformte Gleitkufen ( 7 , 8 ) dienen, welche von einer dem Mittelsteg ( 4 ) des Plateauteils ( 3 ) entsprechenden Rinne ( 9 ) getrennt sind, dadurch gekennzeichnet , daß das Plateauteil ( 3 ) mit dem Tibiateil ( 1 ) so verbindbar ist, daß es - ausgehend von der Nulllage - in einem Winkel α im Bereich von -5° < α < 5° anschlagsbegrenzt um die Hochachse eines in das Tibiateil ( 1 ) eingelassenen Zapfens ( 10 ) verschwenkbar gelagert ist. 1. total ankle, comprising an in the tibia implantable tibial part (1), a implantable in the talus Talusteil (2) as well as a with the tibia part (1) is releasably connectable plateau part (3) facing with two taluswärts from a central web (4) separate hollowing (5, 6), formed as sliding surfaces for correspondingly convex, on the tibia facing surface of Talusteils (2) molded runners (7, 8) are used, which corresponding one of a central web (4) of the plateau portion (3) groove ( 9 are separated), characterized in that the plateau portion (3) to the tibia part (1) is so connected that it - starting from the zero position - a stop-limited at an angle α in the range of -5 ° <α <5 ° around the is pivotally mounted a vertical axis in the tibial component (1) embedded pin (10).
  2. 2. Sprunggelenkendoprothese nach Anspruch 1, dadurch gekennzeichnet, daß das Tibiateil ( 1 ) talusseitig eine kastenförmige Begrenzungskante ( 11 ) aufweist, die den Anschlag für die Verschwenkbewegung des Plateauteils ( 3 ) bildet, daß das Plateauteil ( 3 ) einen Schwenksockel ( 12 ) aufweist, dem sich der Abschnitt ( 13 ) mit den Ausmuldungen ( 5 , 6 ) anschließt, wobei die Höhe des Schwenksockels ( 12 ) wenigstens gleich der Höhe der Begrenzungskante ( 11 ) ist und daß der Zapfen ( 10 ) des Tibiateils ( 1 ) in eine entsprechende Ausnehmung ( 14 ) im Schwenksockel ( 12 ) greift. 2. total ankle of claim 1, characterized in that the tibia part (1) has talusseitig a box-shaped boundary edge (11) which forms the stop for the pivoting movement of the platform part (3), that the plateau portion (3) comprises a pivot base (12) is the closest portion (13) with the hollowing (5, 6) connects, with the height of the pivot base (12) at least equal to the height of the limiting edge (11) and that the pin (10) of the tibia part (1) in a corresponding recess (14) in the swivel base (12) engages.
  3. 3. Sprunggelenkendoprothese nach Anspruch 2, dadurch gekennzeichnet, daß die kastenförmige Begrenzungskante ( 11 , 11 ') an einer Seite offen ist, wobei in dem Schwenksockel ( 12 ) ein Langloch ( 15 ) eingelassen ist, in welchem der Zapfen ( 10 ) des Tibiateils ( 1 ) während des Einsatzes des Plateauteils ( 3 ) in das Tibiateil ( 1 ) führbar ist und dessen Ende ein Anschlag für den Zapfen ( 10 ) in der Endstellung des Plateauteils ( 3 ) sowie das Zentrum der Verschwenkbewegung bildet. 3. total ankle according to claim 2, characterized in that the box-shaped boundary edge (11, 11 ') is open on one side, in the pivot base (12) an oblong hole (15) is recessed, in which the pin (10) of the tibia part (1) during use of the plateau portion (3) in the tibia part (1) is feasible and the end of which a stop for the pin (10) in the end position of the plateau portion (3) and forms the center of pivotal movement.
  4. 4. Sprunggelenkendoprothese nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß an der medialen Ausmuldung ( 6 ) des Plateauteils ( 3 ) eine Antiluxationskante ( 16 ) angeformt ist. 4. total ankle according to one of claims 1 to 3, characterized in that on the medial Ausmuldung (6) of the plateau portion (3) a Antiluxationskante (16) is formed.
DE2001123124 2001-05-03 2001-05-03 Ankle joint prosthetic has plate part attached to tibia part provided with curved recesses cooperating with curved bearing surfaces of talus part Expired - Fee Related DE10123124C1 (en)

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EP1433444A1 (en) * 2002-12-23 2004-06-30 DePuy Products, Inc. Mobile talar component for total ankle replacement implant
EP1563807A1 (en) * 2004-02-13 2005-08-17 Buechel-Pappas Trust Ankle prosthesis including tibial component having peripheral wall for preventing the formation of bone cysts
WO2005037135A3 (en) * 2003-10-14 2005-10-06 Univ Iowa Res Found Ankle prosthesis and method for implanting ankle prosthesis
WO2006047805A2 (en) * 2004-11-08 2006-05-11 Alphamed Medizintechnik Fischer Gmbh Endoprosthetic elements for an ankle joint
WO2006134262A1 (en) * 2005-06-15 2006-12-21 Hassan Razian Device insertable between two successive vertebras
FR2896404A1 (en) * 2006-01-24 2007-07-27 Tornier Sas Surgical instrumentation kit for installing ankle prosthesis, has tibial phantom of tibial implant connected in fixed manner to phantom pad and being displaceable freely against lower end of tibia of patient
US20080103603A1 (en) * 2006-10-26 2008-05-01 Beat Hintermann Ankle prosthesis with neutral position adjustment
WO2008151644A1 (en) * 2007-06-12 2008-12-18 Link America, Inc. Endoprosthesis having a convex design
US20090082875A1 (en) * 2007-09-26 2009-03-26 Depuy Products, Inc. Talar implant system and method
WO2012145707A1 (en) * 2011-04-22 2012-10-26 Imds Corporation Ankle arthroplasty
US8591595B2 (en) 2003-08-27 2013-11-26 Link America, Inc. Ankle-joint endoprosthesis
CN103598936A (en) * 2013-10-21 2014-02-26 上海市第十人民医院 Combined tumor-type ankle joint prosthesis
US9248024B2 (en) 2006-10-13 2016-02-02 Integra Life Sciences Corporation Ankle prosthesis for the arthrodesis of the calcaneum
US9320609B2 (en) 2002-06-27 2016-04-26 Lew C. Schon Semi-constrained ankle joint prosthesis and its method of implantation

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US9320609B2 (en) 2002-06-27 2016-04-26 Lew C. Schon Semi-constrained ankle joint prosthesis and its method of implantation
EP1433444A1 (en) * 2002-12-23 2004-06-30 DePuy Products, Inc. Mobile talar component for total ankle replacement implant
US8591595B2 (en) 2003-08-27 2013-11-26 Link America, Inc. Ankle-joint endoprosthesis
US9681958B2 (en) 2003-08-27 2017-06-20 Stryker European Holdings I, Llc Ankle-joint endoprosthesis
US7963996B2 (en) 2003-10-14 2011-06-21 University Of Iowa Research Foundation Ankle prosthesis methods
US8636744B2 (en) 2003-10-14 2014-01-28 University Of Iowa Research Foundation Positioning device for ankle joint replacement surgery
WO2005037135A3 (en) * 2003-10-14 2005-10-06 Univ Iowa Res Found Ankle prosthesis and method for implanting ankle prosthesis
US7625409B2 (en) 2003-10-14 2009-12-01 University Of Iowa Research Foundation Ankle prosthesis
EP1563807A1 (en) * 2004-02-13 2005-08-17 Buechel-Pappas Trust Ankle prosthesis including tibial component having peripheral wall for preventing the formation of bone cysts
US7485147B2 (en) 2004-02-13 2009-02-03 Pappas Michael J Ankle prosthesis including tibial component having peripheral wall for preventing the formation of bone cysts
CN101098666B (en) 2004-11-08 2012-11-14 阿法梅德医疗技术费希尔有限责任公司 Endoprosthetic elements for an ankle joint
WO2006047805A2 (en) * 2004-11-08 2006-05-11 Alphamed Medizintechnik Fischer Gmbh Endoprosthetic elements for an ankle joint
WO2006047805A3 (en) * 2004-11-08 2006-10-05 Alphamed Medizintechnik Fische Endoprosthetic elements for an ankle joint
WO2006134262A1 (en) * 2005-06-15 2006-12-21 Hassan Razian Device insertable between two successive vertebras
FR2887138A1 (en) * 2005-06-15 2006-12-22 Hassan Razian Device adapted to be inserted between two consecutive vertebrae
FR2896404A1 (en) * 2006-01-24 2007-07-27 Tornier Sas Surgical instrumentation kit for installing ankle prosthesis, has tibial phantom of tibial implant connected in fixed manner to phantom pad and being displaceable freely against lower end of tibia of patient
US8715363B2 (en) 2006-01-24 2014-05-06 Tornier Sas Surgical instrumentation kit for inserting an ankle prosthesis
EP1813230A1 (en) * 2006-01-24 2007-08-01 Tornier Sa Chirurgical instumentation kit for placing a dowel prosthesis.
US8114091B2 (en) 2006-01-24 2012-02-14 Tornier Surgical instrumentation kit for inserting an ankle prosthesis
US9248024B2 (en) 2006-10-13 2016-02-02 Integra Life Sciences Corporation Ankle prosthesis for the arthrodesis of the calcaneum
US20080103603A1 (en) * 2006-10-26 2008-05-01 Beat Hintermann Ankle prosthesis with neutral position adjustment
US9278006B2 (en) * 2006-10-26 2016-03-08 European Foot Platform Sc Ankle prosthesis with neutral position adjustment
WO2008151644A1 (en) * 2007-06-12 2008-12-18 Link America, Inc. Endoprosthesis having a convex design
US20090082875A1 (en) * 2007-09-26 2009-03-26 Depuy Products, Inc. Talar implant system and method
WO2012145707A1 (en) * 2011-04-22 2012-10-26 Imds Corporation Ankle arthroplasty
CN103598936A (en) * 2013-10-21 2014-02-26 上海市第十人民医院 Combined tumor-type ankle joint prosthesis

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