US3694820A - Prosthetic shoulder joint - Google Patents

Prosthetic shoulder joint Download PDF

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Publication number
US3694820A
US3694820A US59083A US3694820DA US3694820A US 3694820 A US3694820 A US 3694820A US 59083 A US59083 A US 59083A US 3694820D A US3694820D A US 3694820DA US 3694820 A US3694820 A US 3694820A
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United States
Prior art keywords
fixation means
plane
cup
succession
points
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Expired - Lifetime
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US59083A
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English (en)
Inventor
John Tracey Scales
David Goddard
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National Research Development Corp UK
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Nat Res Dev
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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
    • A61F2/40—Joints for shoulders
    • 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
    • A61F2/40—Joints for shoulders
    • A61F2/4059—Humeral 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
    • A61F2/40—Joints for shoulders
    • A61F2/4081—Glenoid components, e.g. cups
    • 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
    • A61F2002/30316—The 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
    • A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30574—Special structural features of bone or joint prostheses not otherwise provided for with an integral complete or partial collar or flange
    • 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
    • A61F2/30767—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
    • A61F2002/30891—Plurality of protrusions
    • A61F2002/30894—Plurality of protrusions inclined obliquely with respect to each other
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
    • A61F2310/00005—The prosthesis being constructed from a particular material
    • A61F2310/00011—Metals or alloys
    • A61F2310/00029—Cobalt-based alloys, e.g. Co-Cr alloys or Vitallium

Definitions

  • a prosthetic scapular device having a generally cup-shaped member, normally of a hemispherical form at least internally, and intracancellous fixation means extending from approximately one half only of the outer surface of the cup.
  • the fixation means normally in the form of mutually divergent spikes, include long members extending from points adjacent the central radial plane of the relevant cup half and diverge in the same sense from such plane, together with short members on opposite sides of such plane.
  • the long members increase in length and divergence from said plane as they approach the cup rim.
  • the available devices include humeral head prostheses, but no associated glenoid prosthesis.
  • implantation of the existing humeral head devices usually involves removal of the rotator cuff muscles, and the resultant implant is liable to dislocate.
  • the present invention seeks to alleviate this situation by effectively providing a prosthetic glenoid cavity for co-operation with a prosthetic humeral head.
  • a prosthetic scapular glenoid device comprising a generally cup-shaped member having intracancellous fixation means rigidly connected to or integral with, and extending from, approximately one half only of the outer surface of said member.
  • the glenoid cup as said member may be termed, will normally be substantially hemispherical, at least over its inner surface.
  • the fixation means comprise a plurality of mutally divergent spike-like elements, including both long and short spikes.
  • the longer spikes stem from a succession of points adjacent the central radial plane of the relevant half of the cup, and they diverge in the same sense slightly away from such plane.
  • the longer spike of greatest length and divergence from the central radial plane is that closest to the rim of the cup.
  • the associated shorter spikes are located on both sides of the succession of larger spikes and within the relevant half cup surface.
  • the cup has an internal diameter of about A inch and external diameter of about 1 inch, the longer spikes range from about a .to 1 inch in length with respective divergence of about 9 and 13 from the central radial plane, and the shorter spikes are about A; inch in length.
  • spike-like elements as fixation means, this is not essential.
  • the role of some or all of the longer spikes may be served by an appropriately shaped web and the role of some or all of the shorter spikes may be served by ribs.
  • An associated prosthetic humeral head device for use with a cup as just described may be of any suitable form given that it comprises a ball-like head part which can, when the device is implanted, be presented to the cup to form an appropriate ball-and-socket joint. This point will become clearer after consideration of the illustrated embodiment hereinafter and the desired relative attitudes of the joint parts.
  • a preferred form of the latter device comprises a rod-like intramedullary fixation part integrally formed with a ball-like humeral head part at one end, the longitudinal axis of the head part being turned from that of the fixation part by about 45.
  • FIG. 1 shows one embodiment of a glenoid device according to the invention in plan view
  • FIGS. 2 and 3 are side views of the embodiment of FIG. 1 as seen in the directions indicated at A and B,
  • FIGS. 4, 5 and 6 are sectional views respectively takenatC-C,D-D,andE Ein FIG. 1,
  • FIGS. 7 and 8 are sectional views respectively taken at F F, and G G in FIG. 2,
  • FIG. 9 is a sectional view taken at H H in- FIG. 3,
  • FIG. 10 is a plan view of the cup of FIG. 1 showing the co-ordinate positions of the fixation means
  • FIG. 11 is a diametral section of the cup of FIG. 1,
  • FIGS. 12 and 13 respectively show an associated embodiment of a humeral head device according to the invention in plan and side views
  • FIGS. 14 and 15 are sectional views respectively taken at l I, and J J in FIG. 13, and
  • FIGS. 16 and 17 diagrammatically illustrate the manner of implantation of the illustrated devices.
  • the illustrated glenoid device comprises a substantially hemispherical cup 1 and a plurality of mutually divergent, spike-like fixation means 2 to 6 of the preferred form described above.
  • the spikes 2 to 6 extend from substantially one half of the exterior of the cup as separated by the diametral plane in the direction A of FIG. 1, the longer spikes 2, 3 and 4 extend from a succession of points adjacent the central radial plane in the direction B of FIG. I and diverge from the latter plane in the same sense, and the shorter spikes 5 and 6 are located on opposite sides of the succession of longer spikes.
  • the two spikes 2 and 3 of the longer spikes are of similar length and similar lateral inclination to the central radial plane, while spike 4 nearest the rim of the cup is of greater length and lateral inclination than spikes 2 and 3.
  • FIGS. 12 to 15 The associated humeral device illustrated by FIGS. 12 to 15 is detailed in similar manner by the following table:
  • the illustrated devices can be conveniently made of cobalt-chromium alloy as is often the case with such devices.
  • the glenoid device may equally well be made of titanium housing a high-density polythene insert as a bearing liner.
  • the liner is conveniently of hemispherical cup form, retained by a spring circlip seated in an annular groove in the main cup adjacent to its rim.
  • the associated devices may be made of any suitable materials, be they metal, plastics, ceramic, composite or combination thereof.
  • the glenoid is excavated and cancellous bone removed to permit cementing or grouting of the device in position, as shown, with acrylic resin or other suitable material.
  • the cup When correctly positioned the cup should lie at an angle of about 60 to the horizontal plane as viewed anteriorly, and should lie at an angle to 13 to the plane of the glenoid cavity as viewed from above.
  • the humeral device is similarly cemented or grouted into a preformed hole made in the humeral marrow cavity so that the balllike head part engages the glenoidal device cup as shown.
  • a prosthetic device for use as a human shoulder joint replacement which device is designed to be used together with a selfhardening or self-curing gap-filling agent within cavities cut in the bone of the scapular glenoid and humerus, comprising:
  • a scapular glenoid first bearing member having a part-spherically shaped first bearing surface; intracancellous first fixation means connected or integrally formed with said first member;
  • first fixation means projecting from said first member along a succession of points adjacent a symmetrically disposed radial plane of said first surface, said succession of points extending between a central portion and one edge portion of said first member as intersected by said plane, said first fixation means projecting further from said member at said one edge portion than from said central portion, and said first fixation means diverging from said plane to one side thereof with increasing projection from said first member; humeral second bearing member having a partspherically shaped second bearing surface complementary to and rotatably received by said first bearing surface;
  • said second fixation means including an elongate tapered projecting from said second member to terminate in a tapered stem.
  • fixation means project from said first bearing member by progression along said succession of points towards said edge portion, and said second fixation means projects from said second bearing member while turning through an angle of about 45 relative to the longitudinal axis of said tapered stem.
  • a prosthetic device for use as a scapular glenoid replacement which device is designed to be used together with a self-hardenin or self-curing gap-filling agent within cavities cut in e bone of the scapular, which device comprises:
  • cup to act as a scapular glenoid replacement and having a part-spherically shaped inner surface, a generally convex outer surface, and a rim joining said inner and outer surfaces;
  • intracancellous fixation means connected or integrally formed with said cup and for bonding in said gap-filling agent
  • fixation means projecting from said outer surface along a succession of points adjacent a plane which is radially and symmetrically disposed relative to said inner surface;
  • fixation means projecting further from said outer surface at said edge portion than from said central portion;
  • fixation means diverging from said plane to one side thereof with increasing projection from said outer surface.
  • a device wherein the divergence of said fixation means from said plane increases with progression along said succession of points toward said edge portion, said divergence being in the range of about 9 to l 3 relative to said plane.
  • fixation means comprise a plurality of spike-like members, the geometrical projections of which in said plane are mutually divergent.
  • fixation means project from said cup by distances in the range of about /2 inch to 1 inch, and further comprising relatively shorter fixation means projecting from said cup outer surface adjacent the first-mentioned fixation means and on both sides thereof relative to said succession of points.

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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)
US59083A 1969-08-25 1970-07-29 Prosthetic shoulder joint Expired - Lifetime US3694820A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4219769 1969-08-25

Publications (1)

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US3694820A true US3694820A (en) 1972-10-03

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US (1) US3694820A (fr)
CH (1) CH528897A (fr)
DE (1) DE2041929C3 (fr)
FR (1) FR2057881A5 (fr)
GB (1) GB1324990A (fr)

Cited By (93)

* Cited by examiner, † Cited by third party
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US3815157A (en) * 1971-11-30 1974-06-11 Nat Res Dev Prosthetic shoulder joint devices
US3842442A (en) * 1972-09-04 1974-10-22 Nat Res Dev Endoprosthetic shoulder joint
US3869730A (en) * 1973-07-25 1975-03-11 Barry A Skobel Surgically implantable joint prosthesis
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US5593448A (en) * 1995-11-14 1997-01-14 Osteonics Corp. Glenoid component for shoulder prosthesis and implant method
WO1998046172A1 (fr) 1997-04-11 1998-10-22 Smith & Nephew, Inc. Prothese humerale modulaire
US5928285A (en) * 1997-05-30 1999-07-27 Bristol-Myers Squibb Co. Orthopaedic implant having an articulating surface with a conforming and translational surface
US5961555A (en) * 1998-03-17 1999-10-05 Huebner; Randall J. Modular shoulder prosthesis
US6364910B1 (en) 2001-07-11 2002-04-02 Biomet, Inc. Method and apparatus for use of a glenoid component
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US8753403B2 (en) 2011-08-30 2014-06-17 Linares Medical Devices, Llc Multi-component knee implant assembly with combined articulating and belt support and traveling surfaces
US8771365B2 (en) 2009-02-25 2014-07-08 Conformis, Inc. Patient-adapted and improved orthopedic implants, designs, and related tools
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Also Published As

Publication number Publication date
DE2041929C3 (de) 1981-09-03
GB1324990A (en) 1973-07-25
DE2041929A1 (de) 1971-03-11
FR2057881A5 (fr) 1971-05-21
CH528897A (fr) 1972-10-15
DE2041929B2 (de) 1980-10-23

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