US3818513A - Implantable joint prosthesis - Google Patents

Implantable joint prosthesis Download PDF

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Publication number
US3818513A
US3818513A US00300967A US30096772A US3818513A US 3818513 A US3818513 A US 3818513A US 00300967 A US00300967 A US 00300967A US 30096772 A US30096772 A US 30096772A US 3818513 A US3818513 A US 3818513A
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United States
Prior art keywords
central
body portion
joint
medullary
implantable prosthesis
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Expired - Lifetime
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US00300967A
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English (en)
Inventor
J Pillet
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Rhone Poulenc SA
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Rhone Poulenc SA
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    • 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
    • A61F2/42—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes
    • 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
    • A61F2/30907—Nets or sleeves applied to surface of prostheses or in cement
    • 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
    • A61F2002/30003—Material related properties of the prosthesis or of a coating on the prosthesis
    • A61F2002/3006—Properties of materials and coating materials
    • A61F2002/30069—Properties of materials and coating materials elastomeric
    • 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
    • A61F2002/30003—Material related properties of the prosthesis or of a coating on the prosthesis
    • A61F2002/3006—Properties of materials and coating materials
    • A61F2002/3008—Properties of materials and coating materials radio-opaque, e.g. radio-opaque markers
    • 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
    • A61F2002/30112—Rounded shapes, e.g. with rounded corners
    • A61F2002/30125—Rounded shapes, e.g. with rounded corners elliptical or oval
    • 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
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30448—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements using adhesives
    • 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
    • A61F2002/30563—Special structural features of bone or joint prostheses not otherwise provided for having elastic means or damping means, different from springs, e.g. including an elastomeric core or shock absorbers
    • 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
    • A61F2002/30593—Special structural features of bone or joint prostheses not otherwise provided for hollow
    • 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
    • A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2220/005—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements using adhesives
    • 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
    • A61F2230/0004—Rounded shapes, e.g. with rounded corners
    • A61F2230/0008—Rounded shapes, e.g. with rounded corners elliptical or oval
    • 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
    • A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2250/0058—Additional features; Implant or prostheses properties not otherwise provided for
    • A61F2250/0096—Markers and sensors for detecting a position or changes of a position of an implant, e.g. RF sensors, ultrasound markers
    • A61F2250/0098—Markers and sensors for detecting a position or changes of a position of an implant, e.g. RF sensors, ultrasound markers radio-opaque, e.g. radio-opaque markers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S128/00—Surgery
    • Y10S128/21—Silicone

Definitions

  • the present invention relates to an implantable prosthesis of a joint.
  • implantable prosthesis of a joint comprising a central flexible hollow body portion, defining a central unobstructed cavity enabling the central portion to be bent with flattening of the opposite walls, and two medullary pins extending outwardly from said central portion, each dimensioned effective to be inserted into the medullary ducts of the bones to be joined.
  • the flexible portion preferably is of substantially elliptic transverse cross-section and of a longitudinal section of rectangular to diamond shaped configuration; more particularly the longitudinal section may be an ellipse or more simply a rectangle, optionally ending in arcs of a circle, an ellipse or a parabola.
  • the ratio of the major axis to the minor axis of the internal and external transverse cross-sections may be between 1 and 2, the major axis being parallel to the bending axis. Good results have been obtained with a ratio of 1.5 to 1.2.
  • the wall thickness of the central body portion is a function of the elasticity of the material employed and of the result desired.
  • silicone elastomers of medicinal quality 85 to l kg/cm breaking strength, 380 to 550 percent elongation (AFNOR T 46 002), 47 to 60 percent recovery (DIN 53 512)
  • the wall thickness may vary between l/ 10 and H3 and preferably between H6 and V4 of the outer diameter for a tube of circular section. This thickness is not necessarily the same over all of the periphery, it can in particular be greater at the side of the centre of flexion, a ratio of wall thicknesses of up to 2:1 being possible.
  • the length of the central body portion depends on the desired effect, an average length of l to 2% times (preferably 1 to 1% times) the diameter generally being suitable in the case of a body portion having a cavity which is a cylindrical. Most often a body portion of the shortest possible length is chosen, the portion of joint which is to be replaced being itself the shortest possible.
  • the wall of the tube may gradually thicken toward the interior until at the two ends of the cavity a conical or curved wall as indicated above is formed.
  • the tubular portion may initially be filled with sterile air. After implantation water may diffuse through the wall into the tubular portion. It is thus possible initially to introduce into the cavity a sterile, physiologically compatible liquid, for example an isotonic saline solution containing 1 percent of zinc sulphate.
  • a sterile, physiologically compatible liquid for example an isotonic saline solution containing 1 percent of zinc sulphate.
  • the medullary extremities may be of any material and shape currently utilized for implantable prostheses. They may be cylindrical or slightly conical, flexible or rigid, preferably have a surface which is colonizable or adapted to be glued by the well-known surgical adhesives. They may, for example, be of silicone elastomer sheathed in a tricot of polyester fibre which has been adhesively afiixed or of potentially porous ceramic material (described for example in Chemical Engineering, June 16, 1969, p. 42 or in Chemical and Engineering News, Mar. l5,197l,p. 15).
  • implanting of the prosthesis is accomplished according to customary techniques.
  • the prosthesis according to the invention enables the bending line to be well localized, it only offers a weak resistance to flexion and in particular permits bending of large amplitude. Moreover, in contrast to solid, flexible prostheses, it has its maximum restoring couple in a position near the extension which is an important advantage when the muscle or extensor tendon are deficient. It is believed that these advantages are due to the fact that the flexion of the prosthesis causes a two-fold deformation, first flattening of the tube and then bending of the flattened walls, and to the fact that this latter bending affects two layers which are partly movable relative to one another. It is to be noted that filling the cavity with liquid imposes a constant volume on the cavity which limits the tube being crushed and enhances the bending resistance. Moreover, the presence of the cavity improves absorption of terminal shocks.
  • FIGURE is a crosssection through one embodiment of prosthesis according to the invention.
  • the example of joint prosthesis illustrated in the drawing comprises a flexible central tubular portion 1 and two medullary pins 2 and 3.
  • the portion 1 is a tube of circular section of silicone elastomer, outer diameter 8 mm, inner diameter 4 mm, length 14 mm.
  • the pins 2 and 3 are rods of the same kind of elastomer, diameter 4 mm, length 20 mm, embedded 5 mm. in the tube.
  • the cavity 4 may be filled with isotonic saline solution with the aid of a syringe, prior to total curing of the adhesive.
  • the surface of the medullary pins 3 is covered with a sheath 5 of material colonizable by the bone tissue.
  • the articulation may, of course, be obtained from two preformed pieces, one corresponding for example to the whole of portions 1 and 2, or it may even be obtained directly as a single piece, for example in a revolving mould.
  • the elastomer may contain certain radio-opaque charges which facilitate the post-surgery control.
  • implantable prosthesis of a joint comprising a central flexible hollow body portion, defining a central unobstructed cavity, enabling the central portion to be bent with flattening of the opposite walls and two medullary pins extending outwardly from said central portion, each dimensioned efiective to be inserted into the medullary ducts of the bones to be joined.
  • Implantable prosthesis of a joint as claimed in claim 1 wherein said central body portion is in the form of a tubular sleeve, having ends, and wherein said said flexible hollow body portion.

Landscapes

  • 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)
US00300967A 1971-10-27 1972-10-26 Implantable joint prosthesis Expired - Lifetime US3818513A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7138605A FR2158657A5 (enrdf_load_stackoverflow) 1971-10-27 1971-10-27

Publications (1)

Publication Number Publication Date
US3818513A true US3818513A (en) 1974-06-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
US00300967A Expired - Lifetime US3818513A (en) 1971-10-27 1972-10-26 Implantable joint prosthesis

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Country Link
US (1) US3818513A (enrdf_load_stackoverflow)
DE (1) DE2252840A1 (enrdf_load_stackoverflow)
FR (1) FR2158657A5 (enrdf_load_stackoverflow)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4198713A (en) * 1976-10-12 1980-04-22 Swanson Alfred B Protective member for implantable prosthesis and method of protecting the prosthesis
US4313232A (en) * 1979-01-10 1982-02-02 Habal Mutaz B An elastomeric mesh hinge primarily for replacement of the finger joints
US4578080A (en) * 1982-09-06 1986-03-25 Helal Basil H Joint prostheses
US4634445A (en) * 1981-01-30 1987-01-06 Oec Europe Limited Joint prosthesis
US4731088A (en) * 1986-06-02 1988-03-15 Boehringer Mannheim Corp Enclosure member for prosthetic joint
US4787907A (en) * 1987-02-03 1988-11-29 Techmedica, Inc. Morse taper
US5405401A (en) * 1993-10-05 1995-04-11 Orthomet, Inc. Prosthesis for replacement of joints between long bones in the hand
US5405400A (en) * 1993-10-05 1995-04-11 Orthomet, Inc. Joint prosthesis enabling rotary circumduction

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4246662A (en) * 1979-06-07 1981-01-27 Zimmer Usa, Inc. Prosthetic joint
FR2693650B1 (fr) * 1992-07-16 1994-09-30 Simon Henri Implant pour le remplacement partiel ou total d'organes de préférence cartilagineux ou osseux.
US5491882A (en) * 1993-12-28 1996-02-20 Walston; D. Kenneth Method of making joint prosthesis having PTFE cushion
DE19650816B9 (de) * 1996-12-09 2005-02-17 Eska Implants Gmbh & Co. Künstliches Fingergelenk

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3593342A (en) * 1969-01-27 1971-07-20 Cutter Lab Prosthetic joint

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3593342A (en) * 1969-01-27 1971-07-20 Cutter Lab Prosthetic joint

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Calnan Nicolle Encapsulated Finger Joint , Advertisement by Zimmer Orthopaedic Ltd., The Journal of Bone and Joint Surgery, British Vol. 53 B, No. 3, August 1971. *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4198713A (en) * 1976-10-12 1980-04-22 Swanson Alfred B Protective member for implantable prosthesis and method of protecting the prosthesis
US4313232A (en) * 1979-01-10 1982-02-02 Habal Mutaz B An elastomeric mesh hinge primarily for replacement of the finger joints
US4634445A (en) * 1981-01-30 1987-01-06 Oec Europe Limited Joint prosthesis
US4578080A (en) * 1982-09-06 1986-03-25 Helal Basil H Joint prostheses
US4731088A (en) * 1986-06-02 1988-03-15 Boehringer Mannheim Corp Enclosure member for prosthetic joint
US4787907A (en) * 1987-02-03 1988-11-29 Techmedica, Inc. Morse taper
US5405401A (en) * 1993-10-05 1995-04-11 Orthomet, Inc. Prosthesis for replacement of joints between long bones in the hand
US5405400A (en) * 1993-10-05 1995-04-11 Orthomet, Inc. Joint prosthesis enabling rotary circumduction

Also Published As

Publication number Publication date
FR2158657A5 (enrdf_load_stackoverflow) 1973-06-15
DE2252840A1 (de) 1973-05-03

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