WO1987002882A1 - Prosthetic assembly for the knee joint - Google Patents

Prosthetic assembly for the knee joint Download PDF

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Publication number
WO1987002882A1
WO1987002882A1 PCT/FR1986/000383 FR8600383W WO8702882A1 WO 1987002882 A1 WO1987002882 A1 WO 1987002882A1 FR 8600383 W FR8600383 W FR 8600383W WO 8702882 A1 WO8702882 A1 WO 8702882A1
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WO
WIPO (PCT)
Prior art keywords
prosthesis
internal
assembly
external
lobe
Prior art date
Application number
PCT/FR1986/000383
Other languages
French (fr)
Inventor
Jean Manuel Aubaniac
Original Assignee
Jean Manuel Aubaniac
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
Application filed by Jean Manuel Aubaniac filed Critical Jean Manuel Aubaniac
Publication of WO1987002882A1 publication Critical patent/WO1987002882A1/en

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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
    • A61F2/30—Joints
    • A61F2/38—Joints for elbows or knees
    • A61F2/3877—Patellae or trochleae
    • 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
    • A61F2002/3895—Joints for elbows or knees unicompartimental

Definitions

  • the object of the invention relates to the technical sector of medical sciences.
  • prostheses intended to reconstruct the joint between the femur and the tibia.
  • this type of prosthesis is limited in number; there is essentially a distinction between monobloc trochleo-bicondylar prostheses, patellar prostheses and mono-compartmental prostheses.
  • This limitation in number and shape of the prostheses generates certain disadvantages because, depending on the lesion to be treated, only the closest type of prosthesis can be used so that the result obtained cannot be judged satisfactory.
  • the prosthesis is under-adapted to the treatment of the knee to be carried out or the prosthesis is over-adapted to the treatment to be carried out likely to thus affect the undamaged areas.
  • single compartment prostheses are not shaped to be suitable for either the internal condyle or the external condyle.
  • the invention set itself the aim of breaking down, and of modulating, the knee into several parts corresponding to the different possible lesions and of producing, for each of its parts, a prosthesis particularly well adapted in shape and dimension.
  • a set was thus produced comprising for each knee six different types of prosthesis each corresponding to the lesion to be treated.
  • each type exists in three sizes: large, small, medium.
  • Figures 1, 2, 3 and 4 relate to the one-piece trochleo-bicondylar prosthesis, Figure 1 being the anterior view, Figure 2 the side view, Figure 3 the rear view, Figure 4 the top view corresponding to figure 2.
  • Figures 5, 6, 7 and 8 relate to the internal trochleo-condylar prosthesis, Figure 5 being the anterior view, Figure 6 the side view, Figure 7 the rear view, Figure 8 the top view corresponding to figure 6.
  • Figures 9, 10, 11 and 12 relate to the external trochleocondylar prosthesis, Figure 9 being the anterior view, Figure 10 the side view, Figure 11 the rear view, Figure 12 the top view corresponding to figure 10.
  • FIG. 18 - Figures 13, 14, 15 and la relate to the mono-external prosthesis, Figure 13 being the front view, Figure 14 the side view, Figure 15 the rear view, Figure 16 the corresponding top view in Figure 14.
  • - Figures 17, 13, 19 and 20 relate to the mono-internal prosthesis, Figure 17 being the front view, Figure 13 the side view, Figure 19 the rear view, Figure 20 the top view corresponding to FIG. 18.
  • FIG. 21 being the anterior view
  • FIG. 22 the profile view
  • FIG. 23 the rear view
  • FIG. 24 the top view corresponding to FIG. 22.
  • the monobloc trochleo-bicordylar prosthesis illustrated in FIGS. 1 to 4 comprises a part (1) which acts as a patellar shield, extended in a plane perpendicular or substantially perpendicular by profiled half-lobes (2) and (3) separated by a notch (4 ) leaving a common part (5) between said lobes (2) and (3).
  • the lobe (2) is profiled in section to correspond to the mean radius of curvature of the internal condyle.
  • the lobs (3) is profiled in section to correspond in section to the mean radius of curvature of the external condyle.
  • the internal trochleo-condyl prosthesis (Figures 5, 6, 7 and 85 includes the ball joint shield i in (1) extended on one side only, in a plane perpendicular to substantially perpendicular, by the lobe (2) whose profile in section corresponds to the radius of curvature of the inner condyle, opposite the lebe (2), the common part (5) is cut at a bevel (6) at a determined angle corresponding to the normal patellar stroke.
  • External Figures 9,
  • the patellar prosthesis ( Figures 21, 22, 23 and 24) is made from the condylar shield (1) extended in a plane perpendicular or substantially perpendicular, by the common part (5) tooth the lateral ends (8) and (9) are cut at a bevel to correspond respectively to the external and internal patellar stroke.
  • the length of the patellar shield (1) is determined to receive all possible anatomies (high or low patellas).
  • the mono-external prosthesis shown in Figures 13, 14, 15 and 16 only includes the lobe (3) whose: the sectional profile corresponds to the mean radius of curvature of the external condyle.
  • the mono-internal prosthesis shown in Figures 17, 18, 19 and 20 includes only the lobe (2) whose profile in section corresponds to the mean radius of curvature of the internal condyle.
  • each prosthesis has directly or in an attached manner, depending on the nature of the material composing it, anchoring studs (10). These studs are suitably positioned projecting from the internal face of the prostheses to resist the various pressure parts to which the prosthesis is subjected.
  • the studs (10) have the same layout and the same shape. Two studs are formed in overflow from the internal face of each of the lobes (2) and (3), while a stud is formed in overflow from the internal face of the common part (5) relating to the patellar shield. The length of the stud of the patellar shield is greater than that of the studs relating to the lobes (2) and (3).
  • the lobe anchoring studs (2) and (3) are separated and possibly extended laterally by braced webs (11). According to the invention, six types of prostheses have therefore been created for each of the knees, each type preferably being produced in three sizes, ie a total of 36 prostheses.
  • the invention is in no way limited to that of its modes of application any more than to those of the embodiments of its various parts having been more especially indicated; on the contrary, it embraces all its variants.

Abstract

The object of the invention relates to the technical field of medical sciences. The assembly comprises, for each knee, six types of prosthesis which are specially adapted to the lesion to be treated, a basic trochleo-bicondylar monobloc prosthesis of which the shapes and profiles are determined in order to be adapted to the anatomy of the knee particularly the femoral condyles; an external trochleo-condylar prosthesis, an internal trochleo-condylar prosthesis, a rotular prosthesis, a mono-external prosthesis, a mono-internal prosthesis, each of these prostheses presenting according to the type one or a plurality of parts having the same shapes and profiles as those of the basic trochleo-bicondylar prosthesis.

Description

Ensemble prαthétique pour l'articulation du genou. Prosthetic set for the knee joint.
L'objet de l'invention se rattache au secteur technique des sciences médicales.The object of the invention relates to the technical sector of medical sciences.
Il est connu d'employer pour certaines lésions du genou, des prothèses destinées à reconstituer l'articulation entre le fémur et le tibia. Généralement, ce type de prothèses est limité en nombre ; on distingue essentiellement les prothèses trochléo-bicondyliennes monoblocs, les prothèses rotuliennes et les prothèses mono-compartimentaires. Cette limitation en nombre et en forme des prothèses, engendrent certains inconvénients car , en fonction de la lésion à traiter, on peut utiliser seulement le type le plus rapprochant de prothèse de sorte que le résultat obtenu ne peut pas être jugé satisfaisant.It is known to use for certain knee injuries, prostheses intended to reconstruct the joint between the femur and the tibia. Generally, this type of prosthesis is limited in number; there is essentially a distinction between monobloc trochleo-bicondylar prostheses, patellar prostheses and mono-compartmental prostheses. This limitation in number and shape of the prostheses generates certain disadvantages because, depending on the lesion to be treated, only the closest type of prosthesis can be used so that the result obtained cannot be judged satisfactory.
En effet, ou bien la prothèse est sous-adaptée au traitement du genou à effectuer ou bien la prothèse est suradaptée au traitement à effectuer susceptible d'affecter ainsi les zones non endommagées. Par exemple, les prothèses monocompartimentai res ne sont pas conformées pour être ad-aptéss soit au condyle interne soit au condyle externe. De même il n'existe aucune prothèse trochléo-condylienne interne et externe.Indeed, either the prosthesis is under-adapted to the treatment of the knee to be carried out or the prosthesis is over-adapted to the treatment to be carried out likely to thus affect the undamaged areas. For example, single compartment prostheses are not shaped to be suitable for either the internal condyle or the external condyle. Similarly there is no internal and external trochleocondylar prosthesis.
Le problème étant ainsi posé, l'invention s'est fixée pour but de décomposer, et de moduler, le genou en plusieurs parties correspondant aux différentes lésions possibles et de réaliser, pour chacune de ses parties, une prothèse particulièrement bien adaptée en forme et dimension.The problem being thus posed, the invention set itself the aim of breaking down, and of modulating, the knee into several parts corresponding to the different possible lesions and of producing, for each of its parts, a prosthesis particularly well adapted in shape and dimension.
Dans ce but, on exécute une nouvelle prothèse trochléobicondylienne monobloc dont les formes et profils sont déterminés pour s'adapter à l'anatomie du genou notamment du fémur considéré selon un échantillon représentattif. A partir de cette prothèse de base qui est convenablement équipée de plots d'ancrage, on réalise :For this purpose, a new monobloc trochleobicondylar prosthesis is executed, the shapes and profiles of which are determined to adapt to the anatomy of the knee, in particular of the femur considered according to a representative sample. From this basic prosthesis which is suitably equipped with anchoring studs, we realize:
- une prothèse trochléo-condylienne externe,- an external trochleocondylar prosthesis,
- une prothèse trochléo-condylienne interne,- an internal trochleo-condylar prosthesis,
- une prothèse mono-externe,- a mono-external prosthesis,
- une prothèse mono-interne, - une prothèse rotulienne.- a mono-internal prosthesis, - a patellar prosthesis.
On a ainsi réalisé un ensemble comprenant pour chaque genou six types différents de prothèses correspondant chacun à la lésion à traiter. D'une manière préférée, chaque type existe en trois tailles : une grande, une petite, une moyenne.A set was thus produced comprising for each knee six different types of prosthesis each corresponding to the lesion to be treated. Preferably, each type exists in three sizes: large, small, medium.
L'invention est exposée ci-après plus en détail à l'aide des dessins qui représentent les formes et profils de chaque type de prothèse, étant souligné que les prothèses illustrées correspondent au genou droit et sont illustrées à l'échelle i correspondant à la grande taille.The invention is set out below in more detail using the drawings which represent the shapes and profiles of each type of prosthesis, it being emphasized that the prostheses illustrated correspond to the right knee and are illustrated on a scale i corresponding to the big size.
- Les figures 1, 2, 3 et 4 sont relatives à la prothèse trochléo-bicondylienne monobloc, la figure 1 étant la vue antérieure, la figure 2 la vue de profil, la figure 3 la vue postérieure, la figure 4 la vue de dessus correspondant à la figure 2.- Figures 1, 2, 3 and 4 relate to the one-piece trochleo-bicondylar prosthesis, Figure 1 being the anterior view, Figure 2 the side view, Figure 3 the rear view, Figure 4 the top view corresponding to figure 2.
- Les figures 5, 6, 7 et 8 sont relatives à la prothèse trochléo-condylienne interne, la figure 5 étant la vue antérieure, la figure 6 la vue de profil, la figure 7 la vue postérieure, la figure 8 la vue de dessus correspondant à la figure 6.- Figures 5, 6, 7 and 8 relate to the internal trochleo-condylar prosthesis, Figure 5 being the anterior view, Figure 6 the side view, Figure 7 the rear view, Figure 8 the top view corresponding to figure 6.
- Les figures 9, 10, 11 et 12 sont relatives à la prothèse trochléo-condylienne externe, la figure 9 étant la vue antérieure, la figure 10 la vue de profil, la figure il la vue postérieure, la figure 12 la vue de dessus correspondant a la figure 10.- Figures 9, 10, 11 and 12 relate to the external trochleocondylar prosthesis, Figure 9 being the anterior view, Figure 10 the side view, Figure 11 the rear view, Figure 12 the top view corresponding to figure 10.
- Les figures 13, 14, 15 et la sont relatives à la prothèse mono-externe, la figure 13 étant la vue antérieure, la figure 14 la vue de profil, la figure 15 la vue postérieure, la figure 16 la vue de dessus correspondant à la figure 14. - Les figures 17, 13, 19 et 20 sont relatives à la prothèse mono-interne, la figure 17 étant la vue antérieure, la figure 13 la vue de profil, la figure 19 la vue postérieure, la figure 20 la vue de dessus correspondant à la figure 18.- Figures 13, 14, 15 and la relate to the mono-external prosthesis, Figure 13 being the front view, Figure 14 the side view, Figure 15 the rear view, Figure 16 the corresponding top view in Figure 14. - Figures 17, 13, 19 and 20 relate to the mono-internal prosthesis, Figure 17 being the front view, Figure 13 the side view, Figure 19 the rear view, Figure 20 the top view corresponding to FIG. 18.
- Les figures 21, 22, 23 et 24 sont relatives à la prothèse rotulienne, la figure 21 étant la vue antérieure, la figure 22 la vue de profil, la figure 23 la vue postérieurs, la figure 24 la vue de dessus correspondant à la figure 22.- Figures 21, 22, 23 and 24 relate to the patellar prosthesis, Figure 21 being the anterior view, the FIG. 22 the profile view, FIG. 23 the rear view, FIG. 24 the top view corresponding to FIG. 22.
La prothèse trochléo-bicordylienne monobloc illustrée figures 1 à 4 comprend une partis ( 1 ) qui fait office de bouclier rotulien, prolongé dans un plan perpendiculaire ou sensiblement perpendiculaire par demi-lobes profilés (2) et (3) séparés par une échancrure (4) laissant subsister une partie commune (5) entre lesdits lobes (2) et (3). Dans le cas du genou droit, le lobe (2) est profilé an section pour correspondre au rayon moyen de courbure du condyle interne. Inversement, le lobs (3) est profilé en section pour correspondre en section au rayon de courbure moyen du condyle externe.The monobloc trochleo-bicordylar prosthesis illustrated in FIGS. 1 to 4 comprises a part (1) which acts as a patellar shield, extended in a plane perpendicular or substantially perpendicular by profiled half-lobes (2) and (3) separated by a notch (4 ) leaving a common part (5) between said lobes (2) and (3). In the case of the right knee, the lobe (2) is profiled in section to correspond to the mean radius of curvature of the internal condyle. Conversely, the lobs (3) is profiled in section to correspond in section to the mean radius of curvature of the external condyle.
La prothèse trochléo-condyl isnne interne (figures 5, 6, 7 et 85 comprend le bouclier rotul i en (1) prolongé d'un côté seulement, dans un plan perpendiculaire au sensiblement perpendiculaire, par le lobe (2) dont le profil en section correspond su rayon de courbure noyen du condyle interne. A l'opposé du lebe (2), la partie commune (5) est coupée en biseau (6 ) selon un angle détermine correspondant à la course rotulienne normale. La prothèse trochléo-condvlienne externe (figures 9,The internal trochleo-condyl prosthesis (Figures 5, 6, 7 and 85 includes the ball joint shield i in (1) extended on one side only, in a plane perpendicular to substantially perpendicular, by the lobe (2) whose profile in section corresponds to the radius of curvature of the inner condyle, opposite the lebe (2), the common part (5) is cut at a bevel (6) at a determined angle corresponding to the normal patellar stroke. external (Figures 9,
10, 11 et 12) est semblapis à la prothèse trochléo-condylienne interne, la seule différence résidant dans l'implantation du loba (3) et de la coupe en biseau (7) qui sent inversés.10, 11 and 12) is similar to the internal trochleocondylar prosthesis, the only difference residing in the implantation of the loba (3) and the bevel cut (7) which feels inverted.
La prothèse rotulienne (figures 21, 22, 23 et 24) est réalisée a partir du bouclier condylien (1) prolongé dans un plan perpendiculaire ou sensiblement perpendiculaire, par la partie commune (5) dent les extrémités latérales ( 8) et (9) sont coupées en biseau pour correspondre respectivement à la course rotulienne externe et interne. D'une manière mpertante, la longueur du bouclier rotulien (1) est déterminée pour recevoir toutes les anatomies possibles (rotuIes hautes ou basses).The patellar prosthesis (Figures 21, 22, 23 and 24) is made from the condylar shield (1) extended in a plane perpendicular or substantially perpendicular, by the common part (5) tooth the lateral ends (8) and (9) are cut at a bevel to correspond respectively to the external and internal patellar stroke. Importantly, the length of the patellar shield (1) is determined to receive all possible anatomies (high or low patellas).
La prothèse mono-externe montrée figures 13, 14, 15 et 16 comprend seulement le lobe (3) dont: le profil en section correspond au rayon de courbure moyen du condyle extern e. A l'in verse, la prothèse mono-interne montrée figures 17, 18, 19 et 20, comprend seulement le lobe (2) dont le profil en section correspond au rayon de courbure moyen du condyle interne.The mono-external prosthesis shown in Figures 13, 14, 15 and 16 only includes the lobe (3) whose: the sectional profile corresponds to the mean radius of curvature of the external condyle. Inside pours, the mono-internal prosthesis shown in Figures 17, 18, 19 and 20, includes only the lobe (2) whose profile in section corresponds to the mean radius of curvature of the internal condyle.
D'une manière importante, chaque prothèse présente directement ou d'une manière rapportée, en fonction de la nature du matériau la composant, des plots d'ancrage (10). Ces plots sont convenablement positionnés en débordement de la face interne des prothèses pour résister aux différentes parties de pression auxquelles est soumise la prothèse. Selon l'invention, pour chaque type de prothèse, les plots (10) ont la même implantation et la même forme. Deux plots sont formés en débordement de la face interne de chacun des lobes (2) et (3), tandis qu'un plot est formé en débordement de la face interne de la partie commune (5) relative au bouclier rotulien. La longueur du plot du bouclier rotulieπ est supérieure à celle des plots relatifs aux lobes (2) et (3).Importantly, each prosthesis has directly or in an attached manner, depending on the nature of the material composing it, anchoring studs (10). These studs are suitably positioned projecting from the internal face of the prostheses to resist the various pressure parts to which the prosthesis is subjected. According to the invention, for each type of prosthesis, the studs (10) have the same layout and the same shape. Two studs are formed in overflow from the internal face of each of the lobes (2) and (3), while a stud is formed in overflow from the internal face of the common part (5) relating to the patellar shield. The length of the stud of the patellar shield is greater than that of the studs relating to the lobes (2) and (3).
Les plots d'ancrage des lobes (2) et (3) sont séparés et éventuellement prolongés latéralement par des toiles entretoisées (11). Selon l'invention, on a donc créé six types de prothèses pour chacun des genoux, chaque type étant réalisé de préférence en trois tailles, soit au total 36 prothèses.The lobe anchoring studs (2) and (3) are separated and possibly extended laterally by braced webs (11). According to the invention, six types of prostheses have therefore been created for each of the knees, each type preferably being produced in three sizes, ie a total of 36 prostheses.
L'invention ne se limite aucunement à celui de ses modes d'applications non plus qu'à ceux des modes de réalisation de ses diverses parties ayant plus spécialement été indiquées ; elle en embrasse au contraire toutes les variantes. The invention is in no way limited to that of its modes of application any more than to those of the embodiments of its various parts having been more especially indicated; on the contrary, it embraces all its variants.

Claims

REVENDICATIONS
-1- Ensemble prothétique pour l'articulation du genou, caractérisé en ce qu'il comprend, pour cnaque genou, six types de prothèses spécialement adaptés à la lésion à traiter, à savoir :-1- Prosthetic assembly for the knee joint, characterized in that it comprises, for each knee joint, six types of prostheses specially adapted to the lesion to be treated, namely:
- une prothèse trochléo-bicondylienne monobicc de base dont les formes et profils sont déterminés pour être acaptés a l'anatomie du genou notamment les condyles fémoraux ;- a basic trochleo-bicondylar monobic prosthesis whose shapes and profiles are determined to be adapted to the anatomy of the knee, in particular the femoral condyles;
- une prothèse trochléo-condylienne externe, une prothèse trochléo-condylienne interne, une prothèse rotulienne, une prothèse mono-externe, uns prothèse mono-interne, chacune desdites prothèses présentant, selon son type, une ou plusieurs parties de mêmes formes et profils pue ceux de la prothèse trochléobicondylienne de base.an external trochleo-condylar prosthesis, an internal trochleo-condylar prosthesis, a patellar prosthesis, a mono-external prosthesis, a mono-internal prosthesis, each of said prostheses having, according to its type, one or more parts of the same shape and profiles those of the basic trochleobicondylar prosthesis.
-2- Ensemble selon la revendicatien 1 cans lapue! la prothèse trochléo-bicondyllenne monobloc, est caractérisé par la forms an atomiqua particulière illustrée aux figures 1 à 4 des dessins selon laquelle elle comprend une partie (1) qui fait office de bouclier rotuiien prolongé dans un plan perpendiculaire ou sensiblement perpendiculaire par deux lobes profilés (2) et (3) sépares par une échancrure (4) laissant susbister, antre lesdits lobes, une partie commune (5), le lobe (2) étant profilé en section peur correspondre au rayon moyen de courbure du condyle interne tandis que le lobe (3) est profilé en section pour correspondre au rayon de courbure moyen au cancvle externe.-2- Set according to the claimant 1 cans lapue! the monobloc trochleo-bicondyllal prosthesis, is characterized by the particular atomic form illustrated in FIGS. 1 to 4 of the drawings according to which it comprises a part (1) which acts as a rotuiian shield extended in a plane perpendicular or substantially perpendicular by two profiled lobes (2) and (3) separated by a notch (4) letting support, between said lobes, a common part (5), the lobe (2) being profiled in section to correspond to the mean radius of curvature of the internal condyle while the lobe (3) is profiled in section to correspond to the mean radius of curvature at the external carcvle.
-3- Ensemble selon les revendications 1 et 2 ensemble, dans lequel la prothèse trocchléo-cordvlienne interne est caractérisé par la forme anatomique particulière illustrée aux figures 5 à 8 des dessins selon laquelle elle comprend le bouclier retulien (1) prolongé, d'un côté seulement, pans un plan perpendiculaire ou sensiblement perpendiculaire, par le lobe (2) cent le profil en section correspond au rayon de courbure moyen eu condyle in terne ; à l'opposé dudit lobe, la partie commune (5) étant coupée en biseau (ό) selon un angle déterminé correspondant à la course rotulienne normale.-3- The assembly of claims 1 and 2 assembly, wherein the internal trocchleocordial prosthesis is characterized by the particular anatomical shape illustrated in Figures 5 to 8 of the drawings according to which it comprises the retulian shield (1) extended by a side only, sides a plane perpendicular or substantially perpendicular, by the lobe (2) cent the profile in section corresponds to the mean radius of curvature in condyle in dull; opposite said lobe, the common part (5) being cut at a bevel (ό) at a determined angle corresponding to the normal patellar stroke.
-4- Ensemble selon les revendications 1 et 2 ensemble, dans lequel la prothèse trcchléo-condylienne externe est caractérisée par la forme anatomique particulière illustrée aux figures 9 à 12 des dessins, selon laquelle elle comprend le bouclier rotulien (1) prolongé, d'un côté seulement, dans un pian perpendiculaire ou sensiblement perpendiculaire, par le lobe (3) dont le profil en section correspond au rayon de courbure moyen du condyle externe ; à l'opposé dudit lobe, la partie commune (5) étant coupée en biseau (7) selon un angle déterminé correspondant à la course rotulienne normale.-4- The assembly of claims 1 and 2 together, wherein the external trcchleocondylar prosthesis is characterized by the particular anatomical shape illustrated in Figures 9 to 12 of the drawings, according to which it comprises the patellar shield (1) extended, only one side, in a plane perpendicular or substantially perpendicular, by the lobe (3) whose profile in section corresponds to the mean radius of curvature of the external condyle; opposite said lobe, the common part (5) being cut at a bevel (7) at a determined angle corresponding to the normal patellar stroke.
-5- Ensemble selon les revendications 1 et 2 ensemble dans lequel la prothèse rotulienne, est caractérisé par la forme anatomique particulière illustrée aux figures 21 a 24 des dessins, selon laquelle elle comprend le bouclier rotulien (1) prolongé d'un plan perpendiculaire ou sensiblement perpendiculaire, par la partie commune (5) dont les extrémités latérales (8) et (9) sont coupées en biseau pour correspondre respectivement à la course rotulienne externe et interne.-5- The assembly of claims 1 and 2 assembly in which the patellar prosthesis, is characterized by the particular anatomical shape illustrated in Figures 21 to 24 of the drawings, according to which it comprises the patellar shield (1) extended by a perpendicular plane or substantially perpendicular, by the common part (5) whose lateral ends (8) and (9) are cut at a bevel to correspond respectively to the external and internal patellar stroke.
-6- Ensemble selon l'une quelconque des revendications 2, 3, 4 et 5, caractérisé en ce que la longueur du bouclier rotuiien (1) est déterminée pour recevoir toutes les anatomiss possibles.-6- An assembly according to any one of claims 2, 3, 4 and 5, characterized in that the length of the rotuiian shield (1) is determined to receive all possible anatomis.
-7- Ensemble selon les revendications 1 et 2 ensemble, dans lequel la prothèse mono-externe est caractérisée par la forme particulière anatomique i l l ustrée aux figures 13 à 16 des dessins, selon laquelle elle comprend seulement le lobe (3) dont le profil en section correspond au rayon de courbure moyen du condyle exte rn e. -8- Ensemble selon les revendications 1 et 2 ensemble, dans lequel la prothèse mono-interne est caractérisée par la ferme particulière anatomique illustrée aux figures 17 à 20 des dessins, selon laquelle elle comprend seulement le lobe (2) dont le profil en section correspond au rayon de courbure moyen du condyle interne.-7- The assembly of claims 1 and 2 together, wherein the mono-external prosthesis is characterized by the particular anatomical shape ill ustrated in Figures 13 to 16 of the drawings, according to which it comprises only the lobe (3) whose profile section corresponds to the mean radius of curvature of the external condyle. -8- The assembly of claims 1 and 2 together, wherein the mono-internal prosthesis is characterized by the particular anatomical firm illustrated in Figures 17 to 20 of the drawings, according to which it comprises only the lobe (2) whose profile in section corresponds to the mean radius of curvature of the internal condyle.
-9- Ensemble selon l'une quelconque des reverdicactions 2 è 8, caractérisé en ce que chaque type de prothèses présente en débor dem ent ce sa face interne des plots d'ancrage (10) convenablement positionnés pour résister aux différentes pressions exer ées.-9- An assembly according to any one of reverdicactions 2 to 8, characterized in that each type of prosthesis has in debor dem ent that its inner face of the anchoring pads (10) suitably positioned to withstand the various pressures exerted.
-10- Ensemble selon la re vendication 9, caractérisé en ce que, pour chaque type de prcthëse, les plots (10) ont la même forme et la même implantation, deux plots étant forcés en débordement de la fa ce interne de cha cun ces lobes (2) et (3), tandis qu'un plot est formé en débordement de la face interne de la partie commune (5) . -10- Assembly according to re vendication 9, characterized in that, for each type of prcthëse, the studs (10) have the same shape and the same location, two studs being forced to overflow from the internal fa of each lobes (2) and (3), while a stud is formed projecting from the internal face of the common part (5).
PCT/FR1986/000383 1985-11-14 1986-11-13 Prosthetic assembly for the knee joint WO1987002882A1 (en)

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Application Number Priority Date Filing Date Title
FR85/17203 1985-11-14
FR8517203A FR2589720A1 (en) 1985-11-14 1985-11-14 KNEE JOINT PROSTHETIC ASSEMBLY

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AU (1) AU6624686A (en)
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Publication number Publication date
EP0245410A1 (en) 1987-11-19
AU6624686A (en) 1987-06-02
FR2589720A1 (en) 1987-05-15

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