JP5410029B2 - 複数の関節接合境界面を有する可動支持組立体 - Google Patents
複数の関節接合境界面を有する可動支持組立体 Download PDFInfo
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- JP5410029B2 JP5410029B2 JP2008090107A JP2008090107A JP5410029B2 JP 5410029 B2 JP5410029 B2 JP 5410029B2 JP 2008090107 A JP2008090107 A JP 2008090107A JP 2008090107 A JP2008090107 A JP 2008090107A JP 5410029 B2 JP5410029 B2 JP 5410029B2
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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
- A61F2/38—Joints for elbows or knees
- A61F2/3868—Joints for elbows or knees with sliding tibial bearing
-
- 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
- A61F2002/30383—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by laterally inserting a protrusion, e.g. a rib into a complementarily-shaped groove
-
- 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
- A61F2002/30383—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by laterally inserting a protrusion, e.g. a rib into a complementarily-shaped groove
- A61F2002/30387—Dovetail connection
-
- 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
- A61F2002/30383—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by laterally inserting a protrusion, e.g. a rib into a complementarily-shaped groove
- A61F2002/3039—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by laterally inserting a protrusion, e.g. a rib into a complementarily-shaped groove with possibility of relative movement of the rib within the groove
- A61F2002/30398—Sliding
-
- 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
- A61F2002/30604—Special structural features of bone or joint prostheses not otherwise provided for modular
-
- 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
- A61F2002/30884—Fins or wings, e.g. longitudinal wings for preventing rotation within the bone cavity
-
- 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
-
- 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
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Physical Education & Sports Medicine (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)
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- Prostheses (AREA)
Description
〔関連出願との相互参照〕
この開示は広くは整形外科用プロテーゼ(orthopaedic prostheses)に関し、特に脛骨トレー(tibial tray)と脛骨インサート(tibial insert)とを含む脛骨組立体(tibial assemblies)に関する。
患者の生涯の間に、例えば病気あるいは外傷の結果、患者に関節置換処置(joint replacement procedure)を行うことを必要とする場合がある。例えば、膝関節の置換手術(knee replacement surgeries)が毎年多く行われている。膝関節の全置換あるいは膝関節形成では、大腿骨の中央骨幹部分(mid-shaft portion)、近位大腿骨、遠位大腿骨および/あるいは大腿骨全体さらに近位脛骨の置換を伴うことがある。人工膝単顆関節置換、即ち人工膝単顆関節形成(unicompartmental knee replacement or arthroplasty)には、単顆表面再形成(unicondylar resurfacing)が含まれる。人工膝単顆関節形成術は、外傷、あるいは非炎症変性関節疾患(noninflammatory degenerate joint disease)または変形性関節症(osteoarthritis)もしくは外傷後関節炎(post-traumatic arthritis)の総合診断などの病気の結果、関節顆が一つだけ損傷した場合、膝のリハビリのために全膝関節形成術(total knee arthroplasty)の代替手段を提供する。従って、膝の関節顆が一つだけ(内側または外側)罹患している場合に、変形性関節症、外傷性関節炎(traumatic arthritis)、リウマチ性関節炎あるいは前に行ったインプラントの失敗により損傷し激痛および/あるいは障害のある関節の手術を受けようとする患者に人工膝単顆関節形成術が使用されうる。さらに、人工膝単顆関節置換術は、単顆脛骨インサート(unicompartmental tibial insert)を使って患者の内側顆および外側顆のそれぞれを置換する「多数部品」の置換("multi-piece" replacement)であってもよい。一つの全大腿骨コンポーネントあるいは二つの部分からなる大腿骨コンポーネントを用いて二つの単顆脛骨インサートと協働させることができる。
本発明の一局面によれば、単顆可動脛骨組立体は、脛骨トレーと、脛骨インサートと、脛骨トレーおよび脛骨インサートとは別体のプラットフォームとを含む。脛骨トレーは脛骨の近位端の外科的に準備された(surgically-prepared)表面に結合するように構成されうる。脛骨インサートは大腿骨の遠位端の外科的に準備された表面に接触するように構成された上部支持面を備えることができる。プラットフォームは、脛骨トレーおよび脛骨インサートに結合するように構成されることができ、プラットフォームが脛骨トレーに対して動くことができ、また脛骨インサートがプラットフォームに対して動くことができる。
本開示の思想はさまざまな変形および代替形態が可能であるが、その特定の典型的実施形態を例として図面に示し本明細書で詳細に述べる。しかしながら、ここに開示する思想を記述した特定の形態に限定する意図はなく、逆に添付の特許請求の範囲で定義するように本発明の精神および範囲内の変形、等価物および代替手段をすべてカバーすることを意図するものであることを理解すべきである。
(1)可動脛骨組立体において、
脛骨の近位端の外科的に準備された表面に結合されるように構成された脛骨トレーと、
上部支持面を有する脛骨インサートと、
前記脛骨トレーおよび前記脛骨インサートとは別体のプラットフォームであって、前記脛骨トレーおよび前記脛骨インサートに結合されるように構成された、プラットフォームと、
を備え、
前記プラットフォームは、前記脛骨トレーに対して動くことができ、
前記脛骨インサートは、前記プラットフォームに対して動くことができる、可動脛骨組立体。
(2)実施の態様1に記載の可動脛骨組立体において、
(i)前記脛骨トレーは、上面であって、前記上面に定められた凸状支持体を有する、上面を含み、
(ii)前記プラットフォームは、内部に定められた凹所を有する底面を含み、前記凹所は、前記脛骨トレーの前記凸状支持体の一部を収容するように構成されている、可動脛骨組立体。
(3)実施の態様1に記載の可動脛骨組立体において、
前記プラットフォームは、内部に定められた凹所を有する上面を含み、前記凹所は、前記脛骨インサートの一部を収容するように構成されている、可動脛骨組立体。
(4)実施の態様3に記載の可動脛骨組立体において、
前記脛骨インサートは、前記プラットフォームの前記上面に定められた前記凹所に収容されるように構成された凸状底面を含む、可動脛骨組立体。
(5)実施の態様1に記載の可動脛骨組立体において、
(i)前記脛骨トレーは、上面であって、前記上面に定められた凸状支持体を有する、上面を含み、
(ii)前記脛骨インサートは、凸状底面を含み、
(iii)前記プラットフォームは、内部に定められた第1凹所を有する上面、および、内部に定められた第2凹所を有する底面を含み、前記第1凹所は、前記脛骨インサートの前記凸状底面の一部を収容するように構成され、前記第2凹所は、前記脛骨トレーの前記凸状支持体の一部を収容するように構成されている、可動脛骨組立体。
(6)実施の態様1に記載の可動脛骨組立体において、
前記プラットフォームは、前記プラットフォームの上面に定められた第1の細長い凹所、および、前記底面に定められた第2の細長い凹所を含み、
前記第1の細長い凹所は、その長さ方向において前後方向に整列され、
前記第2の細長い凹所は、その長さ方向において内側‐外側方向に整列されている、可動脛骨組立体。
(7)実施の態様1に記載の可動脛骨組立体において、
(i)前記脛骨トレーは、上面、および前記上面に定められた軌道を含み、
(ii)前記プラットフォームの一部は、前記プラットフォームが前記軌道に沿って前記脛骨トレーに対して動けるように前記軌道に挿入されるように構成されている、可動脛骨組立体。
(8)実施の態様7に記載の可動脛骨組立体において、
前記軌道は、底面壁、第1側壁、第2側壁、前記第1側壁から前記底面壁の一部を越えて延びる第1リップ、および、前記第2側壁から前記底面壁の一部を越えて延びる第2リップを含み、
前記第1および第2リップは、それらの間に開口を画定している、可動脛骨組立体。
(9)実施の態様7に記載の可動脛骨組立体において、
前記プラットフォームは、上面、および前記上面から上方に延びるステムを含む、可動脛骨組立体。
(10)実施の態様9に記載の可動脛骨組立体において、
前記脛骨インサートは、内部に定められた軌道を有する底面を含み、
前記脛骨インサートの前記軌道は、前記プラットフォームの前記ステムを収容するように構成されている、可動脛骨組立体。
前記脛骨インサートの前記軌道は、底面壁、第1側壁、第2側壁、前記第1側壁から前記底面壁の一部を越えて延びる第1リップ、前記第2側壁から前記底面壁の一部を越えて延びる第リップを含み、
前記第1および第2リップは、それらの間に開口を画定している、可動脛骨組立体。
(12)実施の態様11に記載の可動脛骨組立体において、
前記第1および第2リップのそれぞれは、前記脛骨インサートの前記軌道の前記底面に対して斜めの底面壁を含む、可動脛骨組立体。
(13)実施の態様12に記載の可動脛骨組立体において、
前記ステムは、フランジを含み、
前記フランジは、
(i)前記ステムが前記脛骨インサートの前記軌道に収容されると、前記脛骨インサートの前記軌道の前記底面壁に接触するように構成された底面と、
(ii)前記フランジの前記底面に対して斜めの上面であって、前記ステムが前記脛骨インサートの前記軌道に収容されると、前記脛骨インサートの前記軌道の前記第1リップおよび前記第2リップのうち少なくとも一方の底面に接触するように構成された、上面と、
を有する、可動脛骨組立体。
(14)実施の態様11に記載の可動脛骨組立体において、
前記第1および第2リップのそれぞれは、前記軌道の前記底面壁にほぼ平行な底面壁を含む、可動脛骨組立体。
(15)実施の態様14に記載の可動脛骨組立体において、
前記ステムは、フランジを含み、
前記フランジは、
(i)前記ステムが前記脛骨インサートの前記軌道に収容されたとき、前記脛骨インサートの前記軌道の前記底面壁に接触するように構成された底面と、
(ii)前記フランジの前記底面にほぼ平行な上面であって、前記ステムが前記脛骨インサートの前記軌道に収容されると、前記脛骨インサートの前記軌道の前記第1リップおよび前記第2リップのうち少なくとも一方の底面に接触するように構成された、上面と、
を有する、可動脛骨組立体。
(16)実施の態様9に記載の可動脛骨組立体において、
前記ステムは、フランジを含み、
前記フランジは、平面で見て長方形の底面外形を有しており、前記ステムが前記脛骨インサートの前記軌道に収容されると前記脛骨インサートの前記プラットフォームに対する動きを一方向に制限するように構成されている、可動脛骨組立体。
(17)実施の態様1に記載の可動脛骨組立体において、
前記脛骨インサートは、前記プラットフォームに対してある軸を中心に回転するように構成されている、可動脛骨組立体。
(18)実施の態様1に記載の可動脛骨組立体において、
前記プラットフォームは、前記脛骨トレーに対し前後方向に動くように構成され、
前記脛骨インサートは、前記プラットフォームに対しある軸を中心にして回転するように構成されている、可動脛骨組立体。
(19)実施の態様1に記載の可動脛骨組立体において、
前記脛骨インサートは、前記プラットフォームに対し横方向に動き、また前記プラットフォームの前記ステムにより定められる軸を中心に回転するように構成されている、可動脛骨組立体。
(20)可動脛骨組立体において、
脛骨の近位端の外科的に準備された表面に結合されるように構成された脛骨トレーであって、上面、および前記上面に定められた軌道を含む、脛骨トレーと、
上部支持面を有する脛骨インサートと、
前記脛骨トレーおよび前記脛骨インサートとは別体のプラットフォームであって、前記プラットフォームの一部は、前記プラットフォームが前記脛骨トレーに対して動くことができるように前記脛骨トレーの前記軌道に挿入されるように構成され、かつ前記脛骨インサートが前記プラットフォームに対して動くことができるように前記脛骨インサートに結合されるように構成されている、プラットフォームと、
を備える、
可動脛骨組立体。
前記プラットフォームは、上面、および前記上面から上方に延びるステムを含む、可動脛骨組立体。
(22)実施の態様21に記載の可動脛骨組立体において、
前記脛骨インサートは、内部に定められた軌道を有する底面を含み、
前記脛骨インサートの前記軌道は、前記脛骨トレーの前記ステムを収容するように構成されている、可動脛骨組立体。
(23)実施の態様20に記載の可動脛骨組立体において、
(i)前記脛骨インサートは、底面、および前記底面から下方に延びるステムを含み、
(ii)前記プラットフォームは、前記脛骨インサートの前記ステムを収容するように構成された開口を含む、可動脛骨組立体。
(24)実施の態様23に記載の可動脛骨組立体において、
前記脛骨インサートは、前記ステムが前記プラットフォームの前記開口に収容されると、前記ステムにより定められた軸を中心に回転するように構成されている、可動脛骨組立体。
(25)脛骨組立体を植え込む方法において、
脛骨の近位端の外科的に準備された表面に脛骨トレーを固定することと、
プラットフォームが前記脛骨トレーに対し一方向に動けるように、前記プラットフォームを前記脛骨トレーに結合することと、
脛骨インサートが前記プラットフォームに対し一方向に動けるように、前記脛骨インサートを前記プラットフォームに結合することと、
を含む、方法。
Claims (4)
- 可動脛骨組立体において、
脛骨の近位端の外科的に準備された表面に結合されるように構成された脛骨トレーと、
大腿骨コンポーネントの大腿骨顆と関節接合するように構成された上部支持面を有する脛骨インサートと、
前記脛骨トレーおよび前記脛骨インサートとは別体のプラットフォームであって、前記脛骨トレーと前記脛骨インサートとの間に挿入され、前記脛骨トレーおよび前記脛骨インサートに結合されるように構成された、プラットフォームと、
を備え、
前記脛骨トレーは、長さ方向においてほぼ内側−外側方向に延びている細長い凸形状の支持体を備える上面を有し、
前記プラットフォームは、長さ方向においてほぼ内側−外側方向に延びている凹状の細長い下方凹所を備える底面を有し、前記下方凹所は前記脛骨トレーの前記凸形状の支持体の一部を収容して前記プラットフォームが内側−外側方向に動くように構成されており、
前記プラットフォームは、凹状の上方凹所を備える上面を有し、前記脛骨インサートは、前記プラットフォームの上面の前記上方凹所に収容され、
前記プラットフォームは、前記脛骨トレーに対して動くことができ、
前記脛骨インサートは、前記プラットフォームに対して動くことができる、可動脛骨組立体。 - 請求項1に記載の可動脛骨組立体において、
前記プラットフォームの前記上方凹所は、細長く、その長さ方向において前後方向に整列されている、可動脛骨組立体。 - 請求項1または2に記載の可動脛骨組立体において、
人工膝単顆関節形成術に用いられる可動脛骨組立体。 - 請求項1または2に記載の可動脛骨組立体において、
人工膝関節全置換術に用いられる可動脛骨組立体。
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JP2008253773A JP2008253773A (ja) | 2008-10-23 |
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US (1) | US8147558B2 (ja) |
EP (2) | EP2301479B1 (ja) |
JP (1) | JP5410029B2 (ja) |
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US8147558B2 (en) | 2012-04-03 |
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JP2008253773A (ja) | 2008-10-23 |
ATE529072T1 (de) | 2011-11-15 |
AU2008201468A1 (en) | 2008-10-16 |
AU2008201468B2 (en) | 2012-09-13 |
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