JP5872631B2 - 人工関節 - Google Patents
人工関節 Download PDFInfo
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- JP5872631B2 JP5872631B2 JP2014105411A JP2014105411A JP5872631B2 JP 5872631 B2 JP5872631 B2 JP 5872631B2 JP 2014105411 A JP2014105411 A JP 2014105411A JP 2014105411 A JP2014105411 A JP 2014105411A JP 5872631 B2 JP5872631 B2 JP 5872631B2
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- femur
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- 239000007943 implant Substances 0.000 claims description 122
- 210000000689 upper leg Anatomy 0.000 claims description 52
- 210000000988 bone and bone Anatomy 0.000 claims description 23
- 238000002513 implantation Methods 0.000 claims description 11
- 238000002271 resection Methods 0.000 claims description 11
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 210000002436 femur neck Anatomy 0.000 description 13
- 229910052588 hydroxylapatite Inorganic materials 0.000 description 6
- XYJRXVWERLGGKC-UHFFFAOYSA-D pentacalcium;hydroxide;triphosphate Chemical compound [OH-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XYJRXVWERLGGKC-UHFFFAOYSA-D 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000001356 surgical procedure Methods 0.000 description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 4
- 239000011324 bead Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 230000007935 neutral effect Effects 0.000 description 4
- 239000010936 titanium Substances 0.000 description 4
- 238000011541 total hip replacement Methods 0.000 description 4
- 230000007704 transition Effects 0.000 description 4
- 229910000684 Cobalt-chrome Inorganic materials 0.000 description 3
- 238000002679 ablation Methods 0.000 description 3
- 239000010952 cobalt-chrome Substances 0.000 description 3
- 238000011540 hip replacement Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910001092 metal group alloy Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- 206010011732 Cyst Diseases 0.000 description 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 208000031513 cyst Diseases 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 210000000501 femur body Anatomy 0.000 description 2
- 210000000527 greater trochanter Anatomy 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229910052726 zirconium Inorganic materials 0.000 description 2
- 208000010392 Bone Fractures Diseases 0.000 description 1
- 208000008924 Femoral Fractures Diseases 0.000 description 1
- 229910001200 Ferrotitanium Inorganic materials 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000002391 femur head Anatomy 0.000 description 1
- 210000000528 lesser trochanter Anatomy 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
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- 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
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- 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
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- 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
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- 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
- A61F2/3603—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 implanted without ablation of the whole natural femoral head
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- 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
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- A61F2002/2825—Femur
-
- 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
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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
- 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
- A61F2002/30331—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
- A61F2002/30332—Conically- or frustoconically-shaped protrusion and recess
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- A—HUMAN NECESSITIES
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- 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
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- A—HUMAN NECESSITIES
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- 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
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- 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
- A61F2/32—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
- A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
- A61F2002/3654—Connections of heads directly to 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
- 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
- A61F2220/0033—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit
-
- 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
- A61F2310/00389—The prosthesis being coated or covered with a particular material
- A61F2310/00592—Coating or prosthesis-covering structure made of ceramics or of ceramic-like compounds
- A61F2310/00796—Coating or prosthesis-covering structure made of a phosphorus-containing compound, e.g. hydroxy(l)apatite
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)
Description
1)それは、大腿骨頭及び大腿骨頚の一部の広範囲にわたる骨切除を必要とする。
2)それは、非生理学的な様態で大腿骨体に荷重を与える状態に導き、遠位の負荷伝達及び近位の大腿骨体のストレス遮蔽に導く。
3)近位の大腿骨体における固定点から所定の距離で、人工関節の大腿骨頭上の負荷点とともに、片持ちばり効果(cantilever effect)が存在するように、全人工股関節置換術
のステムの緩和が存在する場合がある。
手術中に、大腿骨は、大腿骨が、略平坦とされる切除された端部を有するように、切除される。インプラントは、切除された大腿骨内に設置される。インプラントの着座位置が最適化されることは、必須である。しかしながら、存在するインプラントとともに、外科医にとってインプラントが適切に着座されるかどうかを決定することは難しい。インプラントが適切に着座されていない場合に、インプラントのオーバードライブの重大なリスクが存在し、大腿骨の骨折を生じ、可能ならば、回復手術(revision surgery)の必要性を生
じる。
る。
数のローブ(lobe)とされてもよい。前記係合手段は、1つ又は複数のタブとされてもよい。前記係合手段は、1つ又は複数のリップとされてもよい。
ステムの近位領域は、Porocast(登録商標)などの複数のビード(bead)を備えてもよい。前記ステムの近位領域は、ビード又はグリットブラストとされてもよい。
よい。前記非回転手段は、1つ又は複数のブレード、1つ又は複数のフィン、1つ又は複数のフルート、1つ又は複数のスプライン、1つ又は複数のリブ、及び/又は1つ又は複数の溝を備えてもよい。
る場合がある。
前記インプラントは、チタニウムから形成されてもよい。
17と大腿骨頭16を接続する部分は、大腿骨頚18であり、大腿骨頭16と大腿骨頚18との間の移行領域は、参照符号19で示されるように実質的に滑らかに凹形的に湾曲されている。大腿骨頚の上方境界は大転子20で終端する一方、大腿骨頚の下方境界は、小転子21で終端する。
係合手段は、それによって、外科医に停止点を表す。図10は、図9における大腿骨インプラント以外の、より中立な位置で方向付けられた大腿骨インプラント30を示す。
2 インプラントステム
3 ベース部分
4 近位端部
5 ステム部分
6 遠位端部
7 係合手段
8 円錐状区域
9 略円筒区域
10 人工関節
11 骨
12 人工股関節全置換術のステム
13 大腿骨部分
14 天頂部
15 大腿骨
16 大腿骨頭
17 大腿骨体
18 大腿骨頚
19 移行領域
20 大転子
21 小転子
22 非回転手段
23 コネクタ、テーパー部
24 ねじ穴
25 モジュラー式大腿骨頭
26 切除された大腿骨
27 切除端部
30 一体式の大腿骨インプラント
31 インプラントステム
Claims (8)
- 大腿骨における移植のためのインプラントステムであって、
前記インプラントステムの近位端部で配置されたベース部分と、
前記インプラントステムの遠位端部に向けて延在しているステム部分と、
前記ステム部分に向けて先細し、前記ベース部分で終端する円錐状区域と、
前記円錐状区域と前記ステム部分との間に配置された円筒状区域と、
を備え、
前記ベース部分は、使用時に前記大腿骨の切除端部と係合するための係合手段を有し、
前記円錐状区域は、円錐形態又は略円錐形態である外側表面を有することを特徴とする、インプラントステム。 - 前記係合手段は、フランジ、カラー、プレート、放射状ディスク、リップ、ローブ、及びタブからなるグループから選択されることを特徴とする請求項1に記載のインプラントステム。
- 前記インプラントステムの近位領域は、骨内部成長表面を備えていることを特徴とする請求項1又は2に記載のインプラントステム。
- 前記ステム部分は、骨内部成長表面を備えていることを特徴とする請求項1〜3のいずれか一項に記載のインプラントステム。
- 前記ステム部分は、少なくとも1つの非回転手段を備えていることを特徴とする請求項1〜4のいずれか一項に記載のインプラントステム。
- 前記大腿骨の前記切除端部は、切除された大腿骨頭であることを特徴とする請求項1〜5のいずれか一項に記載のインプラントステム。
- 使用時に、モジュラー式大腿骨頭を前記インプラントステムに接続するためのコネクタをさらに備えることを特徴とする請求項1〜6のいずれか一項に記載のインプラントステム。
- 大腿骨に移植するためのインプラントであって、
インプラントステムであって、前記インプラントステムの近位端部で配置されたベース部分と、前記インプラントステムの遠位端部に向けて延在しているステム部分と、円錐形態又は略円錐形態である先細の外側表面を有する先細部分と、を備えるインプラントステムと、
モジュラー式大腿骨頭と、
を備え、
前記ベース部分は、前記大腿骨の切除された大腿骨頭と係合するため、かつ、前記大腿骨の前記切除された大腿骨頭との係合のたに構成された遠位に面する骨係合面を画定するための係合手段を有し、これにより、前記インプラントに前記大腿骨の前記切除された大腿骨頭内への前記ステム部分の挿入を限定する単一の停止点を設け、
前記先細の外側表面は、前記ステム部分から延在し、前記遠位に面する骨係合面で終端し、これにより、前記骨係合面は、前記先細の外側表面を越えて延在するリップを画定し、
前記先細部分の前記先細の外側表面は、前記係合手段の前記遠位に面する骨係合面に対して不連続になり、表面の不連続性を画定し、
前記単一の停止点と前記リップとを画定する前記骨係合面は、前記モジュラー式大腿骨頭によってではなく、前記インプラントステムによって画定され、
前記モジュラー式大腿骨頭は、前記インプラントステムの前記ベース部分から延在するコネクタによって前記インプラントステムに解放可能に取り付けられ、
前記インプラントステムの前記ベース部分は、前記リップによって画定される前記遠位に面する骨係合面を越えて遠位方向に延在する部分と、前記インプラントステムに取り付けられている際、前記リップを越えて遠位方向に延在する前記モジュラー式大腿骨頭と、を全く含まず、
前記モジュラー式大腿骨頭は、前記大腿骨の前記切除された大腿骨頭との前記骨係合面の係合中に前記インプラントステムから分離され、これにより、前記大腿骨の前記切除された大腿骨頭と共に前記リップによって画定される前記骨係合面の適切な係合の目安になることを特徴とするインプラント。
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US8764844B2 (en) | 2014-07-01 |
KR101883387B1 (ko) | 2018-08-30 |
GB0720596D0 (en) | 2007-11-28 |
CN106420115A (zh) | 2017-02-22 |
KR20100111661A (ko) | 2010-10-15 |
EP2211783A2 (en) | 2010-08-04 |
CN101868198A (zh) | 2010-10-20 |
US20100298949A1 (en) | 2010-11-25 |
JP5551074B2 (ja) | 2014-07-16 |
JP2014166580A (ja) | 2014-09-11 |
KR20160054610A (ko) | 2016-05-16 |
WO2009053690A3 (en) | 2009-06-11 |
AU2008315802B2 (en) | 2015-03-26 |
WO2009053690A2 (en) | 2009-04-30 |
AU2008315802A1 (en) | 2009-04-30 |
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JP2011508612A (ja) | 2011-03-17 |
CA2702675A1 (en) | 2009-04-30 |
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