WO2010118894A2 - Corps de prothèse pour une prothèse de cuisse - Google Patents

Corps de prothèse pour une prothèse de cuisse Download PDF

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Publication number
WO2010118894A2
WO2010118894A2 PCT/EP2010/002384 EP2010002384W WO2010118894A2 WO 2010118894 A2 WO2010118894 A2 WO 2010118894A2 EP 2010002384 W EP2010002384 W EP 2010002384W WO 2010118894 A2 WO2010118894 A2 WO 2010118894A2
Authority
WO
WIPO (PCT)
Prior art keywords
support plate
prosthesis
shaft
prosthesis body
body according
Prior art date
Application number
PCT/EP2010/002384
Other languages
German (de)
English (en)
Other versions
WO2010118894A3 (fr
Inventor
Franz Senior Copf
Desirée COPF
Peter Copf
Original Assignee
Franz Senior Copf
Copf Desiree
Peter Copf
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 Franz Senior Copf, Copf Desiree, Peter Copf filed Critical Franz Senior Copf
Publication of WO2010118894A2 publication Critical patent/WO2010118894A2/fr
Publication of WO2010118894A3 publication Critical patent/WO2010118894A3/fr

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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
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3662—Femoral shafts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3601—Femoral heads ; Femoral endoprostheses for replacing only the epiphyseal or metaphyseal parts of the femur, e.g. endoprosthetic femoral heads or necks directly fixed to the natural femur by internal fixation devices
    • 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
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30108—Shapes
    • A61F2002/3011—Cross-sections or two-dimensional shapes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/30878—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
    • A61F2002/3625—Necks
    • A61F2002/3631—Necks with an integral complete or partial peripheral collar or bearing shoulder at its base
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3662—Femoral shafts
    • A61F2002/3678—Geometrical features
    • A61F2002/368—Geometrical features with lateral apertures, bores, holes or openings, e.g. for reducing the mass, for receiving fixation screws or for communicating with the inside of a hollow shaft
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3662—Femoral shafts
    • A61F2002/3678—Geometrical features
    • A61F2002/3686—Geometrical features bent
    • 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
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002—Two-dimensional shapes, e.g. cross-sections

Definitions

  • the invention relates to a prosthesis body for a femoral prosthesis comprising a shaft with a proximal support plate for a prosthesis head, wherein on the support plate of this depending a medial and a lateral shaft post are arranged, which are proximally spaced and distal to each other and by struts, in particular oblique struts are formed, between the two shaft posts and the struts recesses and / or freely continuous areas are formed, can grow into the cancellous bone.
  • the invention further relates to a rasp instrument for such a prosthesis body having a surface which has rasp projections and which is identical in shape to the surface of the prosthesis body.
  • rasp instruments are used, after resection in the proximal region of a femur (femur) in the spongy part of the bone, which is surrounded by cortical bone, to produce a recess by rasping the cancellous bone to place the prosthesis body in this recess.
  • the prosthesis body of the type mentioned are known in the prior art and form a prosthesis body in the described embodiment, which grows into the bone, ie in which the cancellous bone after an annealing the recesses and / or freely continuous areas between the shaft posts and the struts completely fills so that such a prosthesis body is firmly anchored in the bone, without the need for cementation.
  • the directions used in this specification refer here to the position of the prosthesis body after insertion into the femur in an upright human.
  • the shaft posts may additionally be made for the shaft posts to have additionally spaced anchoring collars, in particular annular anchoring collars, along their longitudinal extent.
  • anchoring collars may be formed as radial thickenings, which serve the surface enlargement, which can also be achieved by other geometric shapes.
  • the anchoring collars may also be formed as grooves.
  • the shaft posts and the possibly provided braces may have such anchoring collars.
  • Denture bodies of this type are usually made of a titanium alloy or of chromium-cobalt-molybdenum alloys or other suitable materials, and moreover, for the purpose of better bonding to the bone mass, they may have a microporous roughened surface, e.g. can be generated by blasting with glass beads / particles or by etching.
  • the posts in the upper region, in which they are connected to the support plate, in the lateral direction - ie in the direction from lateral to medial - are spaced and run towards each other towards the bottom, the posts a curved, In particular, in two dimensions can take curved course, a shape design is achieved, which corresponds to the inner free area of the proximal end of a femur after rasping of cancellous bone structure.
  • a prosthesis optimally adapts to the interior of the bone.
  • the shafts can each be convexly curved medially and / or ventrally
  • such known prosthesis body have a large volume, so that a corresponding amount of spongiosa must be removed for implantation. It has also been shown that the known prosthesis body have only a very low elasticity and therefore show a too low compliance with force stress of the bone.
  • the object of the invention is therefore to provide a prosthesis body of the type mentioned above, as well as a usable Raspelinstrument with which on the one hand with less material used in the prosthesis body and on the other hand with minor interventions on the femur a tight and all loads of everyday prosthesis can be achieved ,
  • the medial shaft post is shorter as the lateral shaft post. Due to the longer lateral shaft post, a sufficiently good support of the prosthesis body is produced laterally on the inside of the femur, whereby, however, the distal part of the medial shaft post projecting beyond the distal end of the shorter medial shaft post has a higher elasticity compared to force loads in comparison to those in the prior art Technology known constructions.
  • the rapid shaft taper from the distal end of the medial shaft post downwards contributes to a resilient compliance of the lower shaft end.
  • a prosthesis body according to the invention has a reduced volume compared to the prior art, so that a smaller resection of the femur is sufficient.
  • a oblique strut is arranged at the distal end of the medial shaft post, which extends distally and on the lateral shaft post.
  • a skew brace may have an angle of substantially 45 degrees.
  • Inclined struts with each other can have an angle of substantially 90 degrees, in particular wherein the respective shaft-proximal ends of the oblique struts adjoin one another.
  • an aspect ratio of lateral shaft post to medial shaft post may be at least substantially 3: 2.
  • the lateral shaft post may have a length below the support plate of 60 mm to 75 mm, preferably 65 mm to 70 mm, particularly preferably 67.4 mm in this or other length ratios.
  • At least one of the two shaft posts preferably both formed as a double post of two double post parts, wherein the two double post parts are ventral / dorsal opposite, in particular in alignment.
  • Such a double post construction may result, for example, in that a shaft post along its extension, in particular medial or lateral one Has material recess and thus then two connected parallel double post parts can be understood.
  • the shaft posts preferably correspond to their course according to the anatomy of the bone and enlarge the surface of the prosthesis shaft with minimal use of metal volume.
  • the construction according to the invention of a prosthesis body with a shortened medial shaft post can be used in conjunction with other support plates known in the art.
  • These known support plates may, for example, on all sides have a projecting beyond the shaft collar, wherein the underside of the support plate may be inclined in the implanted state from the horizontal out.
  • the support plate may protrude medially beyond the shaft, or its cross-section, provided immediately below the connection region, and for the support plate to pass ventrally and dorsally into the shaft without any protrusion.
  • at least the lower connection region of the support plate, to which the shaft posts are fastened may be arranged horizontally.
  • the aforementioned embodiment of the support plate may also be provided if the lower connection region of the support plate deviates from the horizontal alignment.
  • Such a further developed prosthesis body thus essentially supports itself only medially over the region of the support plate projecting there on the cortical bone of the femur, namely here in particular at the point where the cortical area is particularly strong and firm, and with its greatly enlarged surface Spongiosa leaves remaining in the cancellous bone.
  • ventral and dorsal preferably also lateral
  • the support plate in this development, no or no substantial supernatant over the cross section of the shaft immediately below the connection area, so that the support plate is arranged with its ventral and dorsal side regions substantially only medial in the femur, ie not rests on the Corticalisknochen in these areas, as was the case in the embodiments of the prior art so far.
  • an approx. 4-6 ml larger resection can be carried out, which does not negatively influence the ingrowth of the prosthesis body, but a smaller support plate is sufficient because it is resected distally, and thus material can be saved on the prosthesis body.
  • the support plate on all sides i. Medial, lateral, ventral and dorsal without supernatant passes into the shaft area.
  • Under support plates without supernatant are therefore understood to be those which are arranged with their ventral and dorsally arranged side surfaces, if necessary, medial and lateral side surfaces medial in the femur.
  • protrusions to the shaft in the range of 0 - 10%, preferably 0 - 5% based on the thickness of the shaft between the ventral and dorsal, or medial and lateral side surfaces of the support plate be given.
  • Support plates with such small projections are understood as support plates, which are inventively formed without projection in comparison to those support plates as they are known from the prior art.
  • a prosthesis body in the usual manner as is known in the prosthesis bodies of this generic type, are implanted in the femur, wherein the metal-free volume of the prosthesis stem should be filled either with auto or artificial cancellous graft.
  • the prosthesis body laterally in the region of the support plate, or the support plate itself ends laterally such that the prosthesis body or the support plate after insertion into the femur is at least predominantly without resort to Corticalisknochen the trochanter major ,
  • prosthesis body of the type mentioned laterally on the support plate have a laterally and upwardly facing projection in particular of a curved type with which the known prosthesis body is supported on the corticalis of the greater trochanter.
  • the prosthesis body at the height of the support plate or the support plate itself laterally sloping down to the shaft.
  • support plates with a trochanteric support ended laterally increasing in height in order to be supported with this rising area against the cortical bone of the trochanter.
  • a shape of the prosthesis body is obtained which is less bulky in the upper region and therefore also easier to implant.
  • a prosthesis body at the height of the support plate such that the prosthesis body or the support plate itself parallel to the longitudinal axis of a prosthesis head or its neck, which is arranged on the support plate, at a distance of 20 to 30 mm, preferably 22 to 26 mm and most preferably ends of 24 mm. At these small distances it is ensured that no element or region is arranged laterally on the prosthesis body, which abuts against the greater trochanter or its cortical bone after the insertion of a prosthesis body according to the invention.
  • a prosthesis head is fixedly arranged on the support plate.
  • This prosthesis head has a neck region, which merges into the upper region of the support plate, wherein a joint ball is fastened to the prosthesis head or can be attachable.
  • a prosthesis head with its neck region can be fastened to a support plate.
  • a prosthesis head can subsequently be attached to a prosthesis body according to the invention, for example, only after an insertion of the prosthesis body into the femur.
  • a prosthesis head can be fastened in different angular positions on a support plate, for example in at least two angular positions. These may preferably be discrete angular positions, i. a prosthetic head can be fixed in one or the other angular position, but not in intermediate positions.
  • the neck region or a projection or fastening part arranged thereon can be inserted into a fastening counterpart, for example a recess, in particular one of at least two recesses on the Support plate is inserted.
  • a fastening counterpart for example a recess, in particular one of at least two recesses on the Support plate is inserted.
  • Such recesses for example two recesses, may overlap, at least in their upper regions.
  • such recesses may each be formed as a bore, wherein the holes extending from a common opening in the support plate below the support plate in two or more depending on the number of holes and more different directions.
  • a prosthesis head which is inserted with its neck region through such a common opening, can thus be used depending on the insertion direction in one of the holes provided and thus occupy different angles in the same support plate.
  • a support plate of the aforementioned type according to the invention preferably horizontally aligned after insertion and is arranged in particular perpendicular to the axis of the longitudinal extent of the shaft to arrange the neck of the prosthesis head at an angle of 58 degrees to the prosthesis support plate, i. in the so-called valgus position.
  • the neck of the prosthesis head at an angle of 58 degrees to the prosthesis support plate, i. in the so-called valgus position.
  • the prosthesis body has at least one connecting element, in particular in each case a connecting element in a proximal and a distal region, which may be designed for example as a threaded bore can and with which the prosthesis body with a vibrating device is connectable.
  • a connecting element in particular a threaded hole in the support plate and / or at the lower end of the shaft (olive) can be arranged ventrally and / or dorsally.
  • a threaded bore can preferably be arranged at the distal end of the lateral shaft post or in a lower region between the medial and lateral shaft posts.
  • a prosthesis which has grown into a bone can be subsequently removed again from the bone by the application of oscillations to the prosthesis.
  • a vibrating device for example via rods which are screwed into the threaded bores in the dorsal and proximal region, vibrations are introduced into the prosthesis body, whereby controlled destruction of the cancellous bone around the prosthesis body or its shaft can be achieved around. It is thus possible, after loosening of the prosthesis body in cancellous bone this in turn pull out of the femur, for example, with a single targeted impact.
  • the neck of a prosthesis head is arranged at an angle of 4 to 5 degrees, in particular at an angle of 4.4 degrees, relative to the ventral end surface of the support plate.
  • a chip which can be read without contact from the outside.
  • a chip may be e.g. to trade an RFID chip.
  • the prosthesis body used can be identified, e.g. by a stored serial number and on the other hand also e.g. relative to a fixed initial position in the chip, a coordinate can be stored, which is read from the outside and indicating where relative to the original position, a connecting element is arranged to secure a vibrating device to the prosthesis body can.
  • a connecting element is arranged to secure a vibrating device to the prosthesis body can.
  • An inventive Raspelinstrument mentioned above for a prosthesis body of the aforementioned type according to the invention which has rasp projections on its surface to ream the cancellous bone in the proximal end of a femur, characterized in that it is identical with its surface to the surface of the prosthesis body, in particular its shaft part, at least to the surface of an imaginary shell of the prosthesis body, which is thought to be wrapped around the shaft posts.
  • the surface of the prosthesis body is greater than that of the rasp instrument, in particular such that the cross section of the prosthesis body at each point 0.5 - 4 mm, preferably 1 - 3 mm and especially preferably 2 mm larger.
  • Fig. 1 the top view of a prosthesis body according to the invention
  • Fig. 2 a view from the medial to an inventive
  • FIG. 3 shows a view from laterally on a prosthesis body according to the invention
  • FIG. 4 shows a view of a prosthesis body according to the invention, in which the support plate is also formed medially without projection.
  • a prosthesis body of the type according to the invention is shown, which can be inserted into the upper proximal part of a femur.
  • the prosthesis body has a support plate 4 from which downwards exactly two shaft posts 5 a and 5 b hang down, which are firmly connected to the lower connection region of the support plate 4 with this. Accordingly, in this embodiment, there is exactly one medial shaft post 5a and one lateral 5b.
  • the upper part of the prosthesis body may have been manufactured with the support plate 4 and the lower part with the shaft posts 5a and 5b common in a casting process. If the shaft posts 5a, 5b are designed as double posts, the rear double post parts are not recognizable in this view.
  • oblique struts 6 extend between the shaft posts 5a and 5b in order to connect the shaft posts 5a and 5b together and to stabilize the entire shaft 5. This results in between the shaft posts 5a and 5b and the struts 6 recesses and open passage areas 12, in which after the insertion of such a prosthesis body cancellous bone can grow.
  • the metal volume of the prosthesis stem should not exceed the cancellous bone volume in which the prosthesis stem is seated by more than 9-12%.
  • the support plate 4 only has a medial projection or collar region 7, which projects beyond the medial shaft post 5a or the cross section of the proximal end of the shaft directly below the support plate 4, in particular, that this projecting area 7 with its lower surface 4b hangs on the cortical bone of the femur, which is particularly stable at this point.
  • ventral side surface 8 of the support plate 4 as well as the not visible here dorsal side surface of the support plate 4 has no or at least only in the context of the invention unessential projection against the shaft directly below the support plate 4. This is particularly the figure 2 and 3 This results in that the support plate 4 in the anterior and posterior region does not rest on the cortical bone of the femur, but is arranged medially in the femur during implantation.
  • the lateral end 4a of the support plate 4 does not form an upwardly upstanding region, as is known in the prior art, but the support plate 4 ends substantially in extension of the shaft 5 underneath.
  • the support plate may have a sloping down to the shaft 5 area.
  • the lateral end 4a of the support plate or the prosthesis body ends in its lateral region such that it is at least substantially free of attachment to the trochanter major after insertion, that is at least not substantially supported there .
  • a prosthesis head 15 whose longitudinal axis 11 to the horizontal H, in which at least the underside of the support plate 4 is arranged, occupies an angle of 58 degrees, is fastened to the support plate 4.
  • an angle of 30 or 38 degrees would be preferred here.
  • a joint ball can be fastened here in a known manner, which corresponds to a joint socket in the hip bone.
  • the embodiment shown here shows a further preferred development, which may be provided, but need not necessarily be provided and which consists in that both at the distal end 9 of the post 5b 5 as well as at the proximal end and here in particular in the ventral side surface.
  • a threaded bore 10 is arranged.
  • a rod can be screwed, can be initiated by the vibration of a vibrating device in the prosthesis body to stimulate them within the cancellous bone as well as a vibration and thereby the cancellous bone around the shaft 5 to smash around so that after a healing of such a prosthesis body this can also be removed from the femur later.
  • the length ratio of shaft post 5b to shaft post 5a is about 3: 2, thus thus the lateral shaft post projects beyond the medial by about one third and forms an elastic lower end region.
  • FIG. 2 shows, in a medial view, a prosthesis body according to the invention, it being apparent here that the support plate 4 has a projection with respect to the shaft and here in particular the medial shaft post 5 a only in its medial region 4 a which faces the hip bone that the bottom 4b of this medial collar 4a can hang on the cortical bone of the thigh.
  • the lateral view shows that the ventral and dorsal side surfaces 4c do not protrude, or only insignificantly, in a region of less than 10% with respect to the shaft 5 directly below the support plate 4.
  • the shaft post 5a as a double post consists of the two ventral / dorsally spaced double post parts 5a1 and 5a2.
  • the design as a double post can be understood that the post 5a has a medial groove N, which extends along the longitudinal extension of the post 5a from top to bottom.
  • FIG. 2 shows here as well as Fig. 1, that in the axial extent of the shaft posts 5 a and 5 b in each spaced thickenings, so-called anchoring collars 14 are provided, which also serve to increased stability after ingrowth in the femur.
  • anchoring collars 14 are provided, which also serve to increased stability after ingrowth in the femur.
  • the most important function of these anchoring collars is the surface enlargement.
  • Fig. 3 shows the same prosthesis body in lateral view. Otherwise, the same statements apply here as in FIG. 2.
  • FIG. 4 additionally shows a prosthesis body in which, in deviation from FIG. 1, the support plate 4 also has no protrusion medially, that is to say the part designated as collar 7 in FIG. Otherwise, the same statements apply as to the other figures.

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  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)

Abstract

L'invention concerne un corps de prothèse pour une prothèse de cuisse comprenant une tige (5, 5a, 5b) avec une plaque support proximale (4) pour une tête de prothèse (15), un montant de tige médial (5a) et un montant de tige latéral (5b) étant disposés sur la plaque support (4) en dépassement de celle-ci, lesquels montants sont disposés à proximité les uns des autres et allant l'un vers l'autre dans un plan distal et sont reliés par des entretoisements (6), en particulier des entretoisements inclinés (6), des évidements (12) et/ou des zones continues (12) étant formés entre les deux montants de tige (5a, 5b) et les entretoisements (7), évidements et zones dans lesquels une matière spongieuse peut se développer, corps sur lequel le montant de tige médial (5a) est conçu plus court que le montant de tige latéral (5b). L'invention concerne également un instrument à râpe pour un corps de prothèse selon l'une quelconque des revendications précédentes, doté d'une surface qui présente des saillies de râpe et qui est identique au niveau de la forme à la surface du corps de prothèse, en particulier sa partie de tige, sur laquelle la surface du corps de prothèse est supérieure à celle de l'instrument de râpe, en particulier de telle sorte que la section du corps de prothèse en tout endroit va de 0,5 à 4 mm, de préférence de 1 à 3 mm, et avec une préférence particulière est supérieure à 2 mm.
PCT/EP2010/002384 2009-04-17 2010-04-19 Corps de prothèse pour une prothèse de cuisse WO2010118894A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009017532A DE102009017532A1 (de) 2009-04-17 2009-04-17 Prothesenkörper für eine Oberschenkelprothese
DE102009017532.6 2009-04-17

Publications (2)

Publication Number Publication Date
WO2010118894A2 true WO2010118894A2 (fr) 2010-10-21
WO2010118894A3 WO2010118894A3 (fr) 2011-02-24

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/002384 WO2010118894A2 (fr) 2009-04-17 2010-04-19 Corps de prothèse pour une prothèse de cuisse

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DE (1) DE102009017532A1 (fr)
WO (1) WO2010118894A2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20121334A1 (it) * 2012-07-31 2014-02-01 Uni Degli Studi Brescia Stelo femorale per protesi d'anca.
EP3355833B1 (fr) * 2015-09-30 2023-01-11 David Phillip Kirwan Prothèse de hanche
WO2020252166A1 (fr) * 2019-06-12 2020-12-17 Government Of The United States Of America As Represented By The Department Of Veterans Affairs Système d'arthroplastie de la tête fémorale

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DE8302706U1 (de) * 1983-05-11 Aesculap-Werke Ag Vormals Jetter & Scheerer, 7200 Tuttlingen Hüftgelenkendoprothese
US3510883A (en) * 1967-10-30 1970-05-12 Robert F Cathcart Joint prosthesis
DE2933271A1 (de) * 1979-08-16 1981-03-26 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8000 München Gelenkprothesenteil
CS245599B1 (en) * 1984-11-09 1986-10-16 Rudolf Pavlansky Adaptable isoelastic hip endoprosthesis
CH669107A5 (de) * 1986-04-03 1989-02-28 Sulzer Ag Blattartiger schaft fuer die verankerung einer hueftgelenksprothese im femur.
US5330536A (en) * 1987-09-18 1994-07-19 Howmedica Gmbh Femur portion of a hip
DE19740755A1 (de) * 1997-09-16 1999-03-18 Franz Prof Dr Med Copf Satz aus Prothesen unterschiedlicher Größe
ES2255965T3 (es) * 1999-03-04 2006-07-16 Zimmer Gmbh Escofina quirurgica para una protesis de la cabeza femoral.
US7326217B2 (en) * 2003-11-28 2008-02-05 Bubb Stephen K Orthopedic and dental implant system and method
US20070006887A1 (en) * 2005-07-08 2007-01-11 Med-Track Partners Llc Tracking system for prosthetic and implantable devices
DE102007012858A1 (de) * 2007-03-17 2008-09-18 Martin Storz Hüftgelenkprothesensystem

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Also Published As

Publication number Publication date
WO2010118894A3 (fr) 2011-02-24
DE102009017532A1 (de) 2010-10-21

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