JPS6241734B2 - - Google Patents
Info
- Publication number
- JPS6241734B2 JPS6241734B2 JP91384A JP91384A JPS6241734B2 JP S6241734 B2 JPS6241734 B2 JP S6241734B2 JP 91384 A JP91384 A JP 91384A JP 91384 A JP91384 A JP 91384A JP S6241734 B2 JPS6241734 B2 JP S6241734B2
- Authority
- JP
- Japan
- Prior art keywords
- artificial
- sliding part
- small
- head
- femoral head
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
Links
- 210000003041 ligament Anatomy 0.000 claims description 26
- 241001653121 Glenoides Species 0.000 claims description 23
- 210000000323 shoulder joint Anatomy 0.000 claims description 16
- 239000000919 ceramic Substances 0.000 claims description 4
- 210000004095 humeral head Anatomy 0.000 claims description 2
- 210000000988 bone and bone Anatomy 0.000 description 12
- 229920004933 Terylene® Polymers 0.000 description 5
- 239000005020 polyethylene terephthalate Substances 0.000 description 5
- 238000011882 arthroplasty Methods 0.000 description 4
- 230000006378 damage Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000001356 surgical procedure Methods 0.000 description 4
- 210000001519 tissue Anatomy 0.000 description 4
- 239000002639 bone cement Substances 0.000 description 3
- 210000001991 scapula Anatomy 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 241000906034 Orthops Species 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 229920001903 high density polyethylene Polymers 0.000 description 2
- 239000004700 high-density polyethylene Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 208000018084 Bone neoplasm Diseases 0.000 description 1
- 101100512786 Caenorhabditis elegans mei-2 gene Proteins 0.000 description 1
- 206010019468 Hemiplegia Diseases 0.000 description 1
- 206010061223 Ligament injury Diseases 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 241001506137 Rapa Species 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 208000037873 arthrodesis Diseases 0.000 description 1
- 239000002473 artificial blood Substances 0.000 description 1
- 239000012620 biological material Substances 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 210000000845 cartilage Anatomy 0.000 description 1
- 230000001684 chronic effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 210000000629 knee joint Anatomy 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 206010039073 rheumatoid arthritis Diseases 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 210000004872 soft tissue Anatomy 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Landscapes
- Prostheses (AREA)
Description
【発明の詳細な説明】
肩関節周辺の疾患、たとえば慢性関節リウマ
チ、骨腫瘍等の病変が骨・軟骨を侵し、更に広汎
な肩関節周囲の軟部組織の破壊・欠損を惹き起こ
す例が、日常の臨床上、稀ならず見られるが、こ
の様な組織破壊の高度な症例には、連結型人工肩
関節が適応とされる。[Detailed Description of the Invention] Diseases around the shoulder joint, such as chronic rheumatoid arthritis and bone tumors, attack bone and cartilage, and cause widespread destruction and loss of soft tissue around the shoulder joint. Although this is not uncommon in clinical practice, a connected shoulder prosthesis is indicated in cases of severe tissue destruction.
ところで、一般に、人工肩関節には連結型と非
連結型があり、前者はその機構の中に何らかの脱
臼防止装置を内蔵しており、他方後者は肩関節周
囲の筋群が充分に脱臼防止の役目を果している場
合に使われる。本発明は前者、すなわち、連結型
人工肩関節にかかわるものであるが、これより
前、同出願人は、昭和58年11月24日に出願した特
願昭58−219333号及び特願昭58−219334に記載さ
れた人工骨頭及びグレノイド・コンポーネントを
発明した。今回われわれは、上記人工骨頭及びグ
レノイド・コンポーネントに人工靭帯を加えて、
かつて類例を見ない全く新しいタイプの連結型人
工肩関節を発明するに至つた。 By the way, in general, there are two types of artificial shoulder joints: connected and unconnected.The former has some kind of dislocation prevention device built into its mechanism, while the latter has a mechanism in which the muscle groups around the shoulder joint are sufficiently strong to prevent dislocation. Used when fulfilling a role. The present invention relates to the former, that is, a connected artificial shoulder joint. -invented the artificial femoral head and glenoid component described in No. 219334. This time, we added an artificial ligament to the above artificial head and glenoid component,
This led to the invention of a completely new type of connected artificial shoulder joint that has never been seen before.
本発明を詳しく説明すると、該連結型人工肩関
節において、人工骨頭部は骨頭部、頚部、ステム
より構成され、骨頭部は楕円球から小部分を切り
取り、その切り口において、これと対称な立体形
を下方に一部延長して得られる形を呈し、切り口
の長径a′、短径b′、小部分の高さc′1、対称な立体
形の高さc′2、としa′：34〜47mm、b′：32〜46mm、
c′1：12〜20mm、c′2：３〜７mmに分布するものと
する。 To explain the present invention in detail, in the connected type artificial shoulder joint, the artificial bone head is composed of a bone head, a neck, and a stem. It has a shape obtained by partially extending downward, the major axis of the cut end a′, the short axis b′, the height of the small part c′ 1 , the height of the symmetrical three-dimensional shape c′ 2 , and a′: 34 ~47mm, b′: 32~46mm,
It is assumed that c' 1 is distributed between 12 and 20 mm, and c' 2 is distributed between 3 and 7 mm.
頚部は、背ヒレＡ、一対の横ヒレB1，B2、下
ヒレＣを有し、背ヒレＡは３ケの小孔を有し凸曲
線を呈し、一対の横ヒレB1，B2は、めいめい２
ケの小孔を有し凸曲線を呈し、下ヒレＣは凹曲線
を呈し、ステムは小判形の断面を呈することを特
徴とするセラミツクス製の人工骨頭において、角
度α43゜〜47゜好ましくは45゜とし、ステムの中
心軸により骨頭部切り口の長径a′が分割される比
82％〜78％：18％〜22％好ましくは80％：20％と
し、断面が小判形のステムは、断面の長径d′：７
〜15mm、短径e′：５〜９mm、ステム長f′：10〜16
mmとする。 The neck has a dorsal fin A, a pair of lateral fins B 1 , B 2 , and a lower fin C. The dorsal fin A has three small holes and has a convex curve, and a pair of lateral fins B 1 , B 2 . Ha, Mei Mei 2
In an artificial bone head made of ceramics, the lower fin C has a convex curve, the lower fin C has a concave curve, and the stem has an oval cross section.゜, the ratio at which the long axis a′ of the femoral head incision is divided by the central axis of the stem.
82% to 78%: 18% to 22% Preferably 80%: 20%, and for stems with an oval cross section, the major axis of the cross section d': 7
~15mm, short diameter e': 5~9mm, stem length f': 10~16
Let it be mm.
該人工骨頭の摺動部中央から摺動部背側に抜け
る小孔は、入口部の形状が、円又は楕円を呈し、
円の場合直径ＳH：５〜20mmとし、楕円の場合、
長径ＲH：10〜25mm、短径ｒH：３〜15mmとし、背
側の出口に向かつて、ラツパ管様の先細りの形状
を呈し、出口は直径R′H：３〜10mmの円を呈す
る。 The small hole extending from the center of the sliding part of the artificial femoral head to the dorsal side of the sliding part has an entrance shape of a circle or an ellipse,
In the case of a circle, the diameter S H : 5 to 20 mm; in the case of an oval,
The major axis R H is 10 to 25 mm, the minor axis R H is 3 to 15 mm, and it has a tapered shape similar to the canal of Rhapsma toward the dorsal exit, and the exit has a circular diameter R' H : 3 to 10 mm. .
本発明のグレノイド・コンポーネントにおい
て、その摺動部は凹曲面を呈し、摺動部の外輪
は、その中心同士がｌmm：15〜23mm離れた小円
ａ：直径ｒmmと大円ｂ：直径2rmm、及びこれらに
内接する凸曲線ｃ、外接する凸曲線ｄの各円弧に
より構成され、ｒ：10〜14mmとし、摺動部の厚
さ：３〜５mm好ましくは４mmとし、ステム部は３
〜５枚の鶏冠状翼により構成され、各翼は２〜４
ケの高さ１〜３mmの小突起を有しながら、摺動部
外輪縁より３〜７mm内側寄りから始まり、摺動面
後方に15〜20mm離れた点に曲線を描きながら収束
し、各翼の厚さは２〜10mmとし、該グレノイド・
コンポーネントの摺動部中央から背側に抜ける小
孔を穿ち、小孔入口の形状は、円又は楕円を呈
し、円の場合直径Sg：２〜７mmとし、楕円の場
合、長径Rg：２〜８mm、短径rg：２〜６mmと
し、背側の出口に向かつてラツパ管様の先細りの
形状、又は円筒形を呈し、いずれの場合も出口は
直径S′g：２〜７mmの円形を呈している。 In the glenoid component of the present invention, the sliding part has a concave curved surface, and the outer ring of the sliding part has a small circle a with a diameter of rmm and a large circle b with a diameter of 2 rmm, with their centers separated by lmm: 15 to 23 mm. It is composed of arcs of a convex curve c inscribed and a convex curve d circumscribed therein, r: 10 to 14 mm, thickness of the sliding part: 3 to 5 mm, preferably 4 mm, and the stem part is 3 mm.
~ Consists of 5 crest-like wings, each wing having 2 to 4 wings
It has small protrusions with a height of 1 to 3 mm, starting from 3 to 7 mm inward from the outer ring edge of the sliding part and converging in a curved line at a point 15 to 20 mm behind the sliding surface. The thickness of the glenoid is 2 to 10 mm.
A small hole is drilled from the center of the sliding part of the component to the dorsal side, and the shape of the small hole entrance is circular or elliptical. In the case of a circle, the diameter Sg is 2 to 7 mm, and in the case of an ellipse, the major axis Rg is 2 to 8 mm. , short diameter rg: 2 to 6 mm, and toward the exit on the dorsal side, it exhibits a tapered shape like a canal of rappa, or a cylindrical shape, and in either case, the exit has a circular shape with a diameter S'g: 2 to 7 mm. There is.
本発明は上述の如き形状のグレノイド・コンポ
ーネントをHDPを用いて作製した。 In the present invention, a glenoid component having the shape described above was manufactured using HDP.
なお、HDPとは、ハイ・デンシテイ・ポリエ
チレン（high density polyethylene）を意味
し、医学の領域、とりわけ関節外科においては人
工の生体用材料として広く使われている。（参考
文献：Charnley Ｊ、Cupic Z.The nine and
ten−year results of the low−friction
arthroplasty of the hip.Clin Orthop 1973；
95：９−25.Griffith MJ、Seidenstein MK、
Williams Ｄ、Charnley J.Socket wear in
Charnley low friction arthroplasty of the hip.
Clin Orthop 1978；137：37−47.Wroblewski
BM.Direction And Rate Of Socket Wear In
Charnley Low−Friction Arthroplasty.J Bone
Joint Surg.1985：67−Ｂ：757−761.）。 HDP means high density polyethylene, and is widely used as an artificial biomaterial in the medical field, especially in joint surgery. (References: Charnley J, Cupic Z. The nine and
ten−year results of the low−friction
arthroplasty of the hip.Clin Orthop 1973;
95:9-25.Griffith MJ, Seidenstein MK,
Williams D, Charnley J.Socket wear in
Charnley low friction arthroplasty of the hip.
Clin Orthop 1978;137:37−47.Wroblewski
BM.Direction And Rate Of Socket Wear In
Charnley Low−Friction Arthroplasty.J Bone
Joint Surg.1985:67-B:757-761.).
ところで従来の連結型人工肩関節では、これを
構成する人工骨頭とグレノイド・コンポーネント
の関係は、全てボール・アンド・ソケツトの連結
様式をとつている。ところが実際の肩関節では、
ボールのころがり運動、横すべり運動、回旋運動
が行われており、この複雑な運動様式をとるため
に、上腕骨々頭は凸楕円球形、肩甲窩は楕円球凹
曲面に近い形状を呈することになり、ボール・ア
ンド・ソケツトの関係となつていない。又、従来
の人工肩関節は、その材質の大部分が金属である
ため、特に連結型の場合にその総重量が大きくな
り、菲薄な骨板よりなる肩甲骨への負担が大き
く、時には肩甲骨の骨破壊を招いている。更に金
属の人工置換物の錨着には、為害性の高いボー
ン・セメントが大量に必要とされる。手術後の脱
臼に関しても、従来の人工骨頭とグレノイド・コ
ンポーネント同士の結合が弱いために、しばしば
脱臼例が報告されている。又手術後の肩関節の可
動域に関しても充分な結果を得ていない。 By the way, in conventional connected-type artificial shoulder joints, the relationship between the artificial bone head and the glenoid component that constitute this joint is all connected in a ball-and-socket manner. However, in the actual shoulder joint,
The ball undergoes rolling, side-sliding, and rotational movements, and in order to achieve this complex movement, the humeral head has a convex elliptical spherical shape, and the scapular fossa has a shape close to the concave curved surface of an elliptical sphere. Therefore, it is not a ball-and-socket relationship. In addition, since most of the material of conventional shoulder prostheses is metal, the total weight is large, especially in the case of a connected type, which places a heavy burden on the scapula, which is made of a thin bone plate, and sometimes causes damage to the scapula. leading to bone destruction. Furthermore, anchoring artificial metal replacements requires large amounts of highly toxic bone cement. Regarding dislocation after surgery, cases of dislocation are often reported due to the weak bond between the conventional artificial femoral head and glenoid component. Furthermore, satisfactory results have not been obtained regarding the range of motion of the shoulder joint after surgery.
一方、われわれの連結型人工肩関節は、人工骨
頭の摺動部が楕円球凸曲面を呈し、グレノイド・
コンポーネントは楕円球凹曲面に近い形状を呈し
ており、本来の肩関節により近い構造をとつてい
る。更に人工骨頭はセラミツクス製であり金属に
比して軽く、骨へのなじみがよいために、錨着に
はボーン・セメントが不要である。HDP製のグ
レノイド・コンポーネントの錨着に少量のボー
ン・セメントが使われるのみである。更に人工骨
頭とグレノイド・コンポーネントとを連結する人
工靭帯は、材質の軽さ、強さ、生体とのなじみ易
さの点で、金属同士の連結に比して、遥かにすぐ
れている。尚使用される人工靭帯はテリレン
（Terylene）又はカーボン・フアイバーとする
が、合成繊維のポリエステルの一種であるテリレ
ンは、現在世界的に使われているカーボン・フア
イバーに劣らない組織誘導性（tissue
induction）を有し、伸び率も生体の靭帯と同じ
５％であり、既に人工血管の素材として使われて
おり、生体内での安全性が証明されている。特に
テリレンを素材とするリーズ・ケイオー（Leeds
Keio）人工靭帯は直径８〜10μのテリレン・フ
イラメント（Terylene filament）で糸
（strand）をつくり、これをメツシユ（mesh）構
造に平織りしたものであるが、組織誘導された新
生組織の把持力に乏しいテリレンの短所を増殖し
た組織の把持に最も適当な構造、すなわち、約
2.5mm×2.5mmのメツシユ構造にすることで克服し
更にメツシユ構造の過剰な弾力性も平織りにする
ことで解決しており、縦糸は靭帯に加わる応力を
支え、横糸は縦糸のずれを少なくする役目を果し
ている。更に、該人工靭帯は直径10mmの管状構造
（tube）を呈しており、望ましい形状の新生靭帯
が誘導される。又材質としての疲労（fatigue）
の問題に関しても疲労現象が起こる前に組織誘導
された、新生靭帯が本来の靭帯を上まわる強度を
獲得することが動物実験で確認されており、既に
臨床の場で膝関節靭帯損傷に使われて、すぐれた
結果が報告されている。尚、該人工靭帯について
は、雑誌 膝８（２）：240〜249、1983に記載さ
れており、公知の事実である。 On the other hand, in our connected artificial shoulder joint, the sliding part of the artificial head has a convex ellipsoidal surface, and the glenoid
The component has a shape close to the concave curved surface of an ellipsoid, and has a structure that is closer to the original shoulder joint. Furthermore, the artificial femoral head is made of ceramics, which is lighter than metal and fits better into the bone, so bone cement is not required for anchoring. Only a small amount of bone cement is used to anchor the HDP glenoid components. Furthermore, the artificial ligament that connects the artificial femoral head and glenoid component is far superior to metal-to-metal connections in terms of lightness, strength, and compatibility with the living body. The artificial ligament used is Terylene or carbon fiber. Terylene, a type of synthetic polyester, has tissue conductivity comparable to that of carbon fiber, which is currently used worldwide.
It has an elongation rate of 5%, the same as that of living ligaments, and has already been used as a material for artificial blood vessels, and its safety in living bodies has been proven. In particular, Leeds is made from terylene.
Keio) Artificial ligaments are made of strands of Terylene filaments with a diameter of 8 to 10μ, and are plain woven into a mesh structure. The most suitable structure for grasping the proliferated tissue overcomes the shortcomings of terylene, i.e., approximately
The mesh structure of 2.5mm x 2.5mm overcomes this problem, and the excess elasticity of the mesh structure is also solved by using a plain weave.The warp threads support the stress applied to the ligaments, and the weft threads reduce the misalignment of the warp threads. It is fulfilling its role. Furthermore, the artificial ligament has a tube-like structure (tube) with a diameter of 10 mm, and a new ligament with a desired shape is induced. Fatigue as a material
As for the problem, it has been confirmed in animal experiments that the new ligament induced by tissue acquires strength exceeding the original ligament before fatigue phenomenon occurs, and it has already been used in clinical settings to treat knee joint ligament injuries. Excellent results have been reported. The artificial ligament is described in the magazine Knee 8(2): 240-249, 1983, and is a well-known fact.
該人工肩関節の手術後の脱臼に関しても人工靭
帯によつて連結された人工骨頭とグレノイド・コ
ンポーネントの間には、脱臼は起こり得ない。関
節の可動域に関しても、本発明のデザインでは、
摺動部小孔に工夫がこらされており、正常に近い
可動域が得られる。すなわち、本発明は形状、材
質、連結様式、運動様式、脱臼のしにくさ、関節
可動域、そのいずれをとつても、従来の技術を上
まわるものである。尚、人工靭帯の固定法につい
ては、グレノイド・コンポーネント側は人工靭帯
のはじに結節をつくつて抜けない様にしてから肩
甲骨の中に埋没させ、人工骨頭側は余剰の人工靭
帯をステムに巻きつけ、丈夫なナイロン糸等で人
工靭帯同士を締結するものとする。この際、人工
骨頭及びグレノイド・コンポーネントの両摺動面
の間に約５mm内外の人工靭帯の遊びを残すことに
なる。この遊びが、小孔のデザインとあいまつて
正常に近い関節可動域を可能ならしめるものであ
る。 Regarding dislocation after surgery of the shoulder prosthesis, no dislocation can occur between the prosthesis head and the glenoid component, which are connected by the prosthesis ligament. Regarding the range of motion of the joints, the design of the present invention also allows for
The small holes in the sliding part are designed to provide a near-normal range of motion. That is, the present invention is superior to conventional techniques in terms of shape, material, connection style, movement style, resistance to dislocation, and joint range of motion. Regarding the method of fixing the artificial ligament, on the glenoid component side, a knot is made at the edge of the artificial ligament to prevent it from coming off, and then it is buried in the scapula, and on the artificial head side, the excess artificial ligament is wrapped around the stem. The artificial ligaments shall be tied together using strong nylon thread, etc. At this time, approximately 5 mm of play in the artificial ligament is left between the sliding surfaces of the artificial femoral head and the glenoid component. This play, combined with the design of the ostium, allows for a near-normal range of joint motion.
実施例
多結晶アルミナ・セラミツクスで骨頭部の長径
a′：43mm、短径b′：42mm、高さc′1：17mm、c′2：
５mm、背ヒレＡは高さ：５mm、厚さ：３mm、長
さ：20mm、小孔直径：２mm、一対の横ヒレB1，
B2は高さ：4.5mm、厚さ：３mm、小孔直径：２
mm、長さ：22mm、下ヒレＣは切り口下縁より５mm
内側より始まり凹曲線を描きながらステムに移行
し、厚さ：３mmとし、角度α：45゜、ステムの中
心軸により骨頭部切り口の長径a′が分割される
比：80％：20％として、ステムの長さf′：13.5セ
ンチメーター、ステムの長径d′：13mm、ステムの
短径e′：11mm、骨頭部背面は波状の形状を有する
人工骨頭の摺動部中央から摺動部背側に抜ける小
孔を穿ち、小孔入口部は楕円を呈し、縦長の長径
ＲH；20mm、短径ｒH：６mmとし、ラツパ管様に先
細りの形状を呈しながら、摺動部背側に抜けるも
のとし、出口は直径５mmの円形とする。一方、
HDP製のグレノイド・コンポーネントにおい
て、摺動部は、直径43mmの球が平面上を7.5mm平
行移動した時に出来る球面の軌跡、すなわち、滑
らかな凹曲面を呈し、その外輪は中心同士がｌ
mm：14mm離れた小円ａ：直径12mmと大円ｂ：直径
24mm及びこれらに接する凸曲線ｃ：直径96mmの
円、外接する凹曲線ｄ：直径72mmの円の各円弧に
より構成され、円ｂ、円ｃ、円ｄの中心をｂ゜、
ｃ゜、ｄ゜とすると、角ｄ゜ｂ゜ｃ゜＝33゜とな
る様に決定され、摺動部の厚さは４mmとし、ステ
ム部はたがいに直角にまじわる４枚の鶏冠状翼に
より構成され、各翼は３ケの高さ2.0の小突起を
有し、摺動部外輪縁より５mm内側寄りから始ま
り、摺動面後方に18mm離れた点に曲線を描きなが
ら収束し、各翼の厚さは７mmとし、該グレノイ
ド・コンポーネントは、その摺動部中央から背側
に抜ける直径５mmの円筒状の小孔を有する。これ
らの小孔にリーズ・ケイオー人工靭帯を通して連
結型人工肩関節とする。人工靭帯の締結法は、第
７図に示す通りである。Example: Long axis of femoral head made of polycrystalline alumina ceramics
a′: 43mm, short axis b′: 42mm, height c′1 : 17mm, c′2 :
5mm, dorsal fin A height: 5mm, thickness: 3mm, length: 20mm, small hole diameter: 2mm, pair of side fins B 1 ,
B 2 is height: 4.5mm, thickness: 3mm, small hole diameter: 2
mm, length: 22mm, lower fin C is 5mm from the lower edge of the cut
Starting from the inside and moving to the stem while drawing a concave curve, the thickness is 3 mm, the angle α is 45°, and the ratio of the long axis a′ of the cut of the bone head divided by the central axis of the stem is 80%:20%. Stem length f': 13.5 cm, stem major axis d': 13 mm, stem minor axis e': 11 mm, the back of the femoral head has a wavy shape.From the center of the sliding part of the artificial femoral head to the dorsal side of the sliding part A small hole is made, and the entrance part of the small hole has an elliptical shape, and the long axis R H is 20 mm, the short axis R H is 6 mm, and it exits to the dorsal side of the sliding part while exhibiting a tapered shape like a rapa tube. The outlet shall be circular with a diameter of 5 mm. on the other hand,
In the HDP glenoid component, the sliding part exhibits a spherical locus created when a sphere with a diameter of 43 mm is translated 7.5 mm on a plane, that is, a smooth concave curved surface, and the outer rings have centers located at l.
mm: Small circle a 14mm apart: diameter 12mm and large circle b: diameter
24mm and a convex curve c that touches these: a circle with a diameter of 96mm, a concave curve that circumscribes them d: a circle with a diameter of 72mm, and the centers of circles b, c, and d are set at b°,
When c゜ and d゜, the angle is determined to be d゜b゜c゜=33゜, the thickness of the sliding part is 4 mm, and the stem is made up of four comb-shaped wings that intersect at right angles to each other. Each blade has three small protrusions with a height of 2.0, which start 5mm inward from the outer ring edge of the sliding part and converge in a curved line at a point 18mm behind the sliding surface. The glenoid component has a thickness of 7 mm, and has a small cylindrical hole with a diameter of 5 mm extending dorsally from the center of the sliding part. The Leeds-Keioh artificial ligament is passed through these small holes to create a connected artificial shoulder joint. The method of fastening the artificial ligament is as shown in FIG.
われわれは本発明の連結型人工肩関節を脳卒中
後の片麻痺により、肩関節脱臼を来たした患者の
脱臼防止のため、及び肩関節固定術を受けた患者
の新しい肩関節形成術の目的で使用し、所期の目
的を達した。尚、グレノイド・コンポーネントに
使われるHDPとは、High Density Polyethylene
をさすものとする。 We are using the connected artificial shoulder joint of the present invention to prevent dislocation of the shoulder joint in patients who have suffered from hemiplegia after a stroke, and as a new shoulder arthroplasty for patients who have undergone shoulder arthrodesis. used and achieved the intended purpose. HDP used in glenoid components is High Density Polyethylene.
shall refer to
第１図：人工骨頭を正面から見た図を示し、格
子模様は人工靭帯を容れる小孔を表わし、記号Ｄ
はこの小孔に連続する下ヒレＣの小孔を表わす。
第２図：人工骨頭を側面から見た図を示す。第３
図：人工骨頭を上方から見た図を示し、格子模様
は人工靭帯を容れる小孔を表わす。第４図：右肩
用グレノイド・コンポーネントを正面から見た図
を示し、斜線部は摺動部の断面を表わし、格子模
様は人工靭帯を容れる小孔を表わす。第５図：右
肩用グレノイド・コンポーネントを側面から見た
図を示し、格子模様は人工靭帯を容れる小孔を表
わす。第６図：右肩用グレノイド・コンポーネン
トを上から見た図を示し、格子模様は人工靭帯を
容れる小孔を表わす。第７図：本発明の人工骨
頭、グレノイド・コンポーネント、人工靭帯のた
がいの関係を示す。
Figure 1: Shows the front view of the artificial femoral head, the grid pattern represents the small hole that accommodates the artificial ligament, and the symbol D
represents a small hole in the lower fin C that is continuous with this small hole.
Figure 2: Shows a side view of the artificial bone head. Third
Figure: The artificial bone head is viewed from above, and the grid pattern represents the small hole that accommodates the artificial ligament. Figure 4: A front view of the glenoid component for the right shoulder, with the hatched area representing the cross section of the sliding part, and the grid pattern representing the small hole that accommodates the artificial ligament. Figure 5: A side view of the right shoulder glenoid component, with the checkered pattern representing the ostium that accommodates the artificial ligament. Figure 6: A top view of the right shoulder glenoid component, with the checkered pattern representing the ostium that accommodates the artificial ligament. Figure 7: shows the relationship between the artificial femoral head, glenoid component, and artificial ligament of the present invention.
Claims (1)
骨頭において、骨頭部は楕円球から少部分を切り
取り、その切り口においてこれと対称な立体形を
下方に一部延長して得られる形を呈し、頚部は、
背ヒレＡ、一対の横ヒレB1，B2、下ヒレＣを有
し、背ヒレＡは、３ケの小孔を有し凸曲線を呈
し、下ヒレＣは、凹曲線を呈し、ステムは小判形
の断面を呈することを特徴とするセラミツクス製
の人工骨頭の摺動部中央から、摺動部背側に抜け
る小孔を穿ち、グレノイド・コンポーネントにお
いて、その摺動部は凹曲面を呈し、摺動部の外輪
は、その中心同士がｌmm離れた小円ａ、大円ｂ及
びこれらに接する凸曲線Ｃ、凹曲線ｄにより構成
され、ステム部は３枚以上の鶏冠状翼により構成
されることを特徴とするHDP製のグレノイド・
コンポーネントの摺動部中央から、背側に抜ける
小孔を穿ち、これらの小孔に人工靭帯を通して、
人工骨頭とグレノイド・コンポーネントを連結す
ることによつて出来る連結型人工肩関節。1. In an artificial humeral head consisting of a femoral head, a neck, and a stem, the femoral head has a shape obtained by cutting out a small portion from an elliptical sphere and partially extending a symmetrical three-dimensional shape downward at the cut end, The neck is
It has a dorsal fin A, a pair of lateral fins B 1 and B 2 , and a lower fin C. The dorsal fin A has three small holes and has a convex curve, and the lower fin C has a concave curve. A small hole is drilled from the center of the sliding part of the prosthetic head made of ceramics, which is characterized by an oval-shaped cross section, to the dorsal side of the sliding part, and in the glenoid component, the sliding part has a concave curved surface. , the outer ring of the sliding part is composed of a small circle a, a large circle b whose centers are separated by 1 mm, and a convex curve C and a concave curve d that touch these, and the stem part is composed of three or more crest-shaped wings. A glenoid made of HDP that is characterized by
A small hole is made dorsally from the center of the sliding part of the component, and the artificial ligament is passed through these holes.
A connected artificial shoulder joint created by connecting an artificial femoral head and glenoid component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP91384A JPS60156453A (en) | 1984-01-09 | 1984-01-09 | Connection type artificial shoulder joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP91384A JPS60156453A (en) | 1984-01-09 | 1984-01-09 | Connection type artificial shoulder joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60156453A JPS60156453A (en) | 1985-08-16 |
| JPS6241734B2 true JPS6241734B2 (en) | 1987-09-04 |
Family
ID=11486914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP91384A Granted JPS60156453A (en) | 1984-01-09 | 1984-01-09 | Connection type artificial shoulder joint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60156453A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7329284B2 (en) | 2002-09-27 | 2008-02-12 | Depuy Products, Inc. | Concave resurfacing prosthesis |
-
1984
- 1984-01-09 JP JP91384A patent/JPS60156453A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60156453A (en) | 1985-08-16 |
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