DE3840473A1 - Knee joint prosthetic components as replacement for the cruciate ligaments - Google Patents

Knee joint prosthetic components as replacement for the cruciate ligaments

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Publication number
DE3840473A1
DE3840473A1 DE19883840473 DE3840473A DE3840473A1 DE 3840473 A1 DE3840473 A1 DE 3840473A1 DE 19883840473 DE19883840473 DE 19883840473 DE 3840473 A DE3840473 A DE 3840473A DE 3840473 A1 DE3840473 A1 DE 3840473A1
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Germany
Prior art keywords
artificial
knee joint
cruciate ligament
cruciate ligaments
tibia
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.)
Withdrawn
Application number
DE19883840473
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German (de)
Inventor
Michael Dipl Ing Dr Lieke
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE19883840473 priority Critical patent/DE3840473A1/en
Publication of DE3840473A1 publication Critical patent/DE3840473A1/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • A61F2/08—Muscles; Tendons; Ligaments
    • 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
    • A61F2/3872—Meniscus for implantation between the natural bone surfaces
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
    • G09B23/28—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for medicine
    • G09B23/30—Anatomical models
    • G09B23/32—Anatomical models with moving parts

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • General Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Cardiology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Chemical & Material Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Medical Informatics (AREA)
  • Algebra (AREA)
  • Computational Mathematics (AREA)
  • Rheumatology (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Physics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • Theoretical Computer Science (AREA)
  • Rehabilitation Therapy (AREA)
  • Prostheses (AREA)

Abstract

The invention relates to connecting elements for a knee joint endoprosthesis for connection of the femoral component to the tibial component for the total or partial functional replacement of the cruciate ligaments, which essentially comprise mobile components. The entire range of movements of the anatomically normal knee joint is to be achieved by these artificial cruciate ligaments, so that the natural movements in the knee joint, including the physiological terminal rotation, can (are to) be largely simulated. For this purpose, the shapes of the knee joint, above all in the region of the sliding surfaces and in the region of the intercondylar eminences, including the femoral, tibial and patellar joint surfaces, are adapted to suit the shape of the physiologically-anatomically normal knee. The shapes of the cruciate ligaments and their points of attachment, the course of fibres and, if appropriate, the load-bearing capacity imitate the anatomically normal cruciate ligaments. With the precondition that these artificial shapes exactly imitate the normal knee, this results in movements in the knee joint which simulate the physiologically normal movements in a sufficiently exact manner. These artificial cruciate ligaments are to make a contribution to optimising the knee joint endoprosthesis for prevention of premature loosening of the prosthesis due to physiological movements and physiological loads.

Description

Die Erfindung betrifft Verbindungskomponenten für eine Kniegelenksendoprothese zur Verbindung der Fe­ murkomponente mit der Tibiakomponente zwecks funktionellem Teil- oder Total-Ersatz des Kreuzband­ apparates, im wesentlichen bestehend aus beweglichen Teilen.The invention relates to connection components for a knee joint endoprosthesis to connect the Fe Mur component with the tibia component for the purpose Functional partial or total replacement of the cruciate ligament apparatus, consisting essentially of movable Share.

Eines der Probleme in der Endoprothetik des Kniege­ lenkes ist der optimale funktionelle Ersatz des Kreuzbandapparates.One of the problems in knee arthroplasty steering is the optimal functional replacement of the Cruciate ligament apparatus.

Die bisher gebräuchlichen Kniegelenksendoprothesen haben - je nach Modell - einen Teil- oder Totaler­ satz der Funktionen des Kreuzbandapparates vorge­ sehen, wobei - je nach Modell - diese Funktionen sich meistens auf eine bewegliche Verbindung von Tibia und Femur beschränken.The knee joint endoprostheses previously used have - depending on the model - a partial or total set of functions of the cruciate ligament apparatus see, depending on the model, these functions mostly on a moving connection from Limit the tibia and femur.

Der künstliche Ersatz des vollen Bewegungsumfanges des anatomisch normalen Kniegelenkes wird von den bisher gebräuchlichen Kniegelenksendoprothesen nicht erreicht. Die Folgen dieser unphysiologischen Knie­ gelenksendoprothesen sind unphysiologische Be­ lastungen, die einen prädisponierenden Faktor zur vorzeitigen Implantatlockerung darstellen.The artificial replacement of the full range of motion of the anatomically normal knee joint hitherto common knee joint endoprostheses are not reached. The consequences of these unphysiological knees joint endoprostheses are non-physiological loading burdens that are a predisposing factor for represent premature implant loosening.

Der Erfindung liegt die Aufgabe zugrunde, die Knie­ gelenksendoprothese so zu verbessern, daß die physi­ ologisch-anatomisch normalen Funktionen des Kreuz­ bandapparates weitgehend nachgeahmt werden können, so daß dadurch die natürlichen Bewegungsabläufe im Kniegelenk, einschließlich der physiologischen Schlußrotation, weitgehend nachgeahmt werden können. The invention has for its object the knees to improve joint endoprosthesis so that the physi Ecologically anatomically normal functions of the cross band apparatus can be largely imitated, so that the natural movements in Knee joint, including physiological Final rotation, can be largely imitated.  

Die erfindungsgemäße Lösung besteht darin, daßThe solution according to the invention is that

1. die Formen des Kniegelenkes vor allem im Gleitflächenbereich und im Bereich der Eminentia intercondylica, einschließlich Femur-, Tibia- und Patellagelenkflächen, der Form des physiolo­ gisch-anatomisch normalen Knies nachgeahmt sind;1. the shapes of the knee joint especially in Sliding surface area and in the area of the Eminentia intercondylica, including femur, tibia and Patellar articular surfaces, the shape of the physiolo gisch-anatomically normal knees are imitated;

2. vor allem die Formen der Kreuzbänder und ihrer Ansatzstellen, der Faserverlauf und ggfls. die Belastbarkeit dem anatomich normalen Kreuzbandappa­ rat nachempfunden sind.2. especially the shapes of the cruciate ligaments and their attachment points, the fiber course and if necessary. the Resilience to the anatomically normal cruciate ligament appa are based on advice.

Unter der Voraussetzung, daß diese künstlichen Formen exakt dem normalen Knie nachempfunden sind, resultiert ein Bewegungsablauf im Kniegelenk, wel­ cher dem physiologisch normalen Bewegungsablauf aus­ reichend exakt nachgeahmt ist.Provided that these are artificial Shapes are modeled exactly on the normal knee, results in a sequence of movements in the knee joint, wel cher the physiologically normal movement is sufficiently imitated.

Im folgenden wird die Erfindung, in Verbindung mit der Zeichnung, näher erläutert.The following is the invention in connection with the drawing, explained in more detail.

Fig. 1 zeigt die Ansatzstellen der künstlichen Kreuzbänder (Lig. cruc. ant.=vorderes Kreuzband; Lig. cruc. post.=hinteres Kreuzband) in der Drauf­ sicht auf das Tibiaplateau. Fig. 1 shows the attachment points of the artificial cruciate ligaments (Lig. Cruc. Ant. = Anterior cruciate ligament; Lig. Cruc. Post. = Posterior cruciate ligament) in a plan view of the tibial plateau.

Die künstlichen Menisken (Men. lat.=lateraler Meniskus=Außenmeniskus; Men. med.=medialer Meniskus=Innenmeniskus) sind hier ebenfalls darge­ stellt.The artificial menisci (men. Lat. = Lateral Meniscus = outer meniscus; Men. Med. = Medial Meniscus = inner meniscus) are also shown here poses.

Das künstliche vordere Kreuzband entspringt an der inneren Fläche der lateralen künstlichen Femurrolle und ist befestigt vorn zwischen den künstlichen Schienbeintellern (künstliche Area intercondylaris ant. der Tibia). Es verläuft also schräg von oben hinten lateral nach unten vorn medial. The artificial anterior cruciate ligament arises from the inner surface of the lateral artificial femoral roller and is fastened in front between the artificial ones Shin plates (artificial area intercondylaris ant. the tibia). So it runs diagonally from above back lateral downward front medial.  

Das künstliche hintere Kreuzband entspringt von der Innenfläche der künstlichen medialen Femurrolle und zieht schräg nach hinten zur lnsertion in die künst­ liche Area intercondylaris post. der Tibia ein.The artificial posterior cruciate ligament arises from the Inner surface of the artificial medial femoral roller and pulls diagonally backwards for insertion into art intercondylar area of the tibia.

Die künstlichen Kreuzbänder sind so gelagert, daß in fast allen Stellungen Teile von ihnen in Spannung geraten.The artificial cruciate ligaments are stored so that in almost all positions parts of them in tension devices.

Bei der Streckung spannen sich vorzugsweise der vordere Anteil des vorderen Kreuzbandes und der hintere Anteil des hinteren Kreuzbandes. Bei der Beugung werden umgekehrt vorzugsweise die einander zugekehrten Faserstreifen gespannt.When stretching, preferably stretch the anterior portion of the anterior cruciate ligament and posterior portion of the posterior cruciate ligament. In the Conversely, diffraction is preferred to each other facing fiber strips stretched.

In der Feinstruktur bestehen diese künstlichen Kreuzbänder aus gerichteten Fasern resp. Faser­ bündeln.These are artificial in their fine structure Cruciate ligaments made of directional fibers. Fiber bundle up.

Das künstliche hintere Kreuzband ist vorzugsweise kräftiger als das vordere.The artificial posterior cruciate ligament is preferred stronger than the front.

Claims (1)

Verbindungskomponenten für eine Kniegelenksendopro­ these zur Verbindung der Femurkomponente mit der Tibiakomponente zwecks funktionellem Teil- oder To­ tal-Ersatz des Kreuzbandapparates, im wesentlichen bestehend aus beweglichen Teilen,
dadurch gekennzeichnet, daß die Formen des Kniegelenkes, vor allem im Gleitflä­ chenbereich und im Bereich der Eminentia intercon­ dylica, sowie einschließlich Pemur-, Tibia- und Pa­ tellagelenkflächen, der Form des physiologisch-ana­ tomischen Kniegelenkes nachgeahmt sind,
und daß vor allem die Formen der Kreuzbänder und ihrer Ansatzstellen, der Faserverlauf und ggfls. die Belastbarkeit dem anatomisch normalen Kreuzbandappa­ rat nachempfunden sind;
dadurch gekennzeichnet, daß das künstliche vordere Kreuzband an der inneren Fläche der lateralen künst­ lichen Femurrolle entspringt und befestigt ist vorn zwischen den künstlichen Schienbeintellern (künst­ liche Area intercondylaris ant. der Tibia), wobei es von schräg oben hinten lateral nach unten vorn me­ dial verläuft;
dadurch gekennzeichnet, daß das künstliche hintere Kreuzband von der Innenfläche der künstlichen medi­ alen Femurrolle entspringt und schräg nach hinten zur Insertion in die künstliche Area intercondylaris post. der Tibia einzieht;
dadurch gekennzeichnet, daß bei der Streckung vor­ zugsweise der vordere Anteil des künstlichen vor­ deren Kreuzbandes und der hintere Anteil des künst­ lichen hinteren Kreuzbandes sich spannen;
dadurch gekennzeichnet, daß bei der Beugung vorzugs­ weise die einander zugekehrten Faserstreifen der Kreuzbänder gespannt sind;
dadurch gekennzeichnet, daß das hintere künstliche Kreuzband vorzugsweise kräftiger ist als das künst­ liche vordere;
dadurch gekennzeichnet, daß die künstlichen Kreuz­ bänder ausgerichteten Fasern resp. Faserbündeln be­ stehen;
dadurch gekennzeichnet, daß der künstliche Kreuz­ bandapparat an der Tibiakomponente der Kniegelenks­ endoprothese vorzugsweise etwas elastisch-gefedert angebracht ist;
dadurch gekennzeichnet, daß der künstliche Kreuz­ bandapparat an der Femurkomponente der Kniegelenks­ endoprothese vorzugsweise etwas elastisch-gefedert angebracht ist;
dadurch gekennzeichnet, daß die Femurkomponente so­ wie die Tibiakomponente, an welchen der Kreuzband­ apparat angebracht ist, dauerhaft fest und stabil an den jeweiligen Verankerungskomponenten anbringbar sind, wobei vorzugsweise diese Anbringung über eine Verschraubung, z. B. kombiniert mit einer Verstiftung erfolgt (vgl. Kniegelenksendoprothese).Connection components for a knee joint endoprosthesis for connecting the femoral component to the tibia component for the purpose of functional partial or total replacement of the cruciate ligament apparatus, essentially consisting of moving parts,
characterized in that the shapes of the knee joint, especially in the area of the gliding surface and in the area of the intercon dylica, as well as including the surfaces of the pemur, tibia and patella joint, mimic the shape of the physiological-anatomical knee joint,
and that above all the shapes of the cruciate ligaments and their attachment points, the fiber course and if necessary. the resilience is modeled on the anatomically normal cruciate ligament apparatus;
characterized in that the artificial anterior cruciate ligament arises on the inner surface of the lateral artificial femoral roller and is fastened at the front between the artificial tibia plates (artificial area intercondylar ant. the tibia), whereby it runs diagonally from the top back laterally downwards to the front me dial ;
characterized in that the artificial posterior cruciate ligament arises from the inner surface of the artificial medial femoral roller and is drawn obliquely backwards for insertion into the artificial area intercondylaris post. of the tibia;
characterized in that the stretching before preferably the front portion of the artificial in front of their cruciate ligament and the rear portion of the artificial posterior cruciate ligament;
characterized in that the mutually facing fiber strips of the cruciate ligaments are stretched preferentially at the diffraction;
characterized in that the posterior cruciate ligament is preferably stronger than the artificial anterior ligament;
characterized in that the artificial cross ribbons aligned fibers respectively. Fiber bundles are available;
characterized in that the artificial cruciate ligament device is preferably slightly elastic-sprung attached to the tibia component of the knee joint endoprosthesis;
characterized in that the artificial cruciate ligament device is preferably slightly elastic-sprung attached to the femoral component of the knee joint endoprosthesis;
characterized in that the femoral component as well as the tibial component to which the cruciate ligament apparatus is attached can be attached permanently and firmly to the respective anchoring components, preferably this attachment via a screw connection, e.g. B. combined with a pinning (see. Knee joint endoprosthesis).
DE19883840473 1988-12-01 1988-12-01 Knee joint prosthetic components as replacement for the cruciate ligaments Withdrawn DE3840473A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19883840473 DE3840473A1 (en) 1988-12-01 1988-12-01 Knee joint prosthetic components as replacement for the cruciate ligaments

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19883840473 DE3840473A1 (en) 1988-12-01 1988-12-01 Knee joint prosthetic components as replacement for the cruciate ligaments

Publications (1)

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DE3840473A1 true DE3840473A1 (en) 1990-06-13

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DE19883840473 Withdrawn DE3840473A1 (en) 1988-12-01 1988-12-01 Knee joint prosthetic components as replacement for the cruciate ligaments

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997033263A1 (en) * 1996-03-06 1997-09-12 United Surgical Services Limited Surgical model
WO1998020473A1 (en) * 1996-11-07 1998-05-14 United Surgical Services Limited Method of manufacturing a surgical model
GB2333637A (en) * 1996-11-07 1999-07-28 United Surgical Services Ltd Method of manufacturing a surgical model
GB2403416A (en) * 2003-07-02 2005-01-05 Biomet Merck Ltd Prosthesis with artificial ligament

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997033263A1 (en) * 1996-03-06 1997-09-12 United Surgical Services Limited Surgical model
US5967790A (en) * 1996-03-06 1999-10-19 United Surgical Services Limited Surgical model
WO1998020473A1 (en) * 1996-11-07 1998-05-14 United Surgical Services Limited Method of manufacturing a surgical model
GB2333637A (en) * 1996-11-07 1999-07-28 United Surgical Services Ltd Method of manufacturing a surgical model
GB2333637B (en) * 1996-11-07 2000-12-06 United Surgical Services Ltd Method of manufacturing a surgical model
US6361729B1 (en) 1996-11-07 2002-03-26 United Surgical Services Limited Method of manufacturing a surgical model
GB2403416A (en) * 2003-07-02 2005-01-05 Biomet Merck Ltd Prosthesis with artificial ligament

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