JP2007190115A - Internal fixing material for distal radius - Google Patents

Internal fixing material for distal radius Download PDF

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Publication number
JP2007190115A
JP2007190115A JP2006009505A JP2006009505A JP2007190115A JP 2007190115 A JP2007190115 A JP 2007190115A JP 2006009505 A JP2006009505 A JP 2006009505A JP 2006009505 A JP2006009505 A JP 2006009505A JP 2007190115 A JP2007190115 A JP 2007190115A
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distal
radius
locking pin
distal end
reinforcing plate
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JP2006009505A
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Japanese (ja)
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Tsuguo Kuramoto
貢雄 倉本
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FOR S MEDICAL KK
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FOR S MEDICAL KK
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Priority to JP2006009505A priority Critical patent/JP2007190115A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an internal fixing material for a distal radius, securely preventing the shortening dislocation. <P>SOLUTION: The internal fixing material 1 comprises a reinforcing plate 2, a locking pin 4 for fixing a distal arm 3 of the reinforcing plate 2, and a screw 6 for fixing a plate proximal part 5. If the distal radius 7 is fractured, the reinforcing plate 2 is set for recovering the fractured part 8, and is fixed by inserting the locking pin 4 in the distal part and screwing the screw 6 into a diaphysis part 9 in the proximal part. The locking pin 4 has a curved shaft 4a insertable along the inner face 11a of a cortical bone 11 on the joint face side 10 of the distal radius 7. As the locking pin 4 can be inserted along the inner face 11a of the cortical bone, the bone face can be supported with the whole shaft. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

この発明は、橈骨遠位端骨折を整復固定するために用いる内固定材に関する。   The present invention relates to an internal fixation material used for reducing and fixing a distal radius fracture.

手の平をついて倒れた時などに生ずる手関節近位の骨折は、コーレス骨折と呼ばれ、橈骨遠位端の手根関節より３〜４ｃｍ中枢側に起こる。この骨折を治療する方法の一つとして、骨折部を直接的に内固定するプレート固定法がある。   A fracture of the proximal wrist joint that occurs when the user falls on the palm of the hand is called a coreless fracture and occurs 3-4 cm from the carpal joint at the distal end of the radius. As one of the methods for treating this fracture, there is a plate fixing method in which the fracture portion is directly internally fixed.

プレート固定法は、複数のボルト挿通孔を穿設する骨折部補強用プレートを骨折部位に沿わせて設置し、このプレートの橈骨遠位及び近位にボルトを締結したりあるいはピンを刺入して骨折部を整復固定するものであり、このようなプレート固定法には、例えば下記に示すような内固定材が提案されている。
特開２００４−２２３０４２号公報 In the plate fixing method, a fracture-reinforcing plate that has a plurality of bolt insertion holes is installed along the fracture site, and bolts are inserted into the distal and proximal ribs of this plate or pins are inserted. For example, the following internal fixing materials have been proposed for such plate fixing methods.
Japanese Patent Application Laid-Open No. 2004-223042

従来の橈骨遠位端用内固定材は、図５に示すように橈骨遠位端７を骨折した場合、骨折部８を整復するため骨折部補強用プレート１０２を添接し、遠位に固定スクリュー１０４を捻じ込むと共に近位の骨幹部９にも固定スクリュー１０６を捻じ込んで固定していた。   When the distal end of the radius 7 is fractured as shown in FIG. 5, the conventional internal fixation material for the distal end of the radius is attached with the fracture portion reinforcing plate 102 to reduce the fracture portion 8, and is fixed to the distal end. The screw 104 was screwed and the fixing screw 106 was also screwed and fixed to the proximal diaphysis 9.

橈骨遠位端用の内固定材１０１は骨折部位が短縮転位するのを防止するため、遠位の固定スクリュー１０４を図６に示すように、橈骨遠位端７の関節面側１０の皮質骨１１の内面に接するよう捻じ込んでいた。   Since the internal fixation material 101 for the distal end of the radius prevents the fracture site from being shortened and displaced, the distal fixation screw 104 is connected to the cortical bone on the joint surface side 10 of the distal radius 7 as shown in FIG. 11 was screwed into contact with the inner surface.

しかし、従来の内固定材１０１は遠位を固定するスクリュー又はピンが直線的に形成されていたため、湾曲する橈骨遠位端関節面側の皮質骨内面を支持する箇所が一点に集中してしまい、骨折部位が短縮転位するのを十分に防止できない恐れがあった。   However, in the conventional internal fixation material 101, since the screw or pin for fixing the distal end is formed linearly, the portions supporting the inner surface of the cortical bone on the joint surface side of the curved distal end are concentrated at one point. There was a possibility that the fracture site could not be prevented sufficiently from shortening dislocation.

この発明は、橈骨先端部骨折を整復固定するために用いる従来の内固定材が有する上記の問題点を解消すべくなされたものであり、短縮転位を確実に防止し得る橈骨遠位端用内固定材を提供することを目的としている。   The present invention has been made to solve the above-mentioned problems of the conventional internal fixation material used for reducing and fixing the fracture at the distal end of the radius, and is capable of reliably preventing shortened dislocation. The purpose is to provide fixing materials.

上記課題を解決するため、この発明の橈骨遠位端用内固定材は、橈骨先端部骨折を整復固定するために用いる骨折部補強用プレートと、この補強用プレートの遠位部に穿設する遠位ロッキングホールに挿入してプレートを固定するロッキングピンとを有する橈骨遠位端用内固定材において、前記ロッキングピンは、橈骨遠位端関節面側の皮質骨内面に沿って刺入し得る湾曲軸を有することを特徴とするものである。   In order to solve the above-mentioned problems, the internal fixation material for the distal end of the radius of the present invention is formed in the fracture portion reinforcing plate used for reducing and fixing the fracture at the distal end of the radius, and the distal portion of the reinforcing plate. In the internal fixation material for the distal end of the radius having a locking pin that is inserted into the distal locking hole to fix the plate, the locking pin can be inserted along the inner surface of the cortical bone on the joint surface side of the distal end of the radius It has a shaft.

ロッキングピンの湾曲軸は関節面側の皮質骨の断面形状に合致した曲率を有し、これを刺入する際には軸の大半が皮質骨内面に沿うようにし、頭部は遠位ロッキングホールに固定される。   The bending axis of the locking pin has a curvature that matches the cross-sectional shape of the cortical bone on the articular surface side, and when inserting it, most of the axis is along the inner surface of the cortical bone, and the head is the distal locking hole Fixed to.

この発明の橈骨遠位端用内固定材は、補強用プレートの遠位端を固定するロッキングピンが湾曲軸を有するので、軸を関節面側の皮質骨の内面に沿って刺入することができ、軸全体で骨面を支持することが可能となる。このため安定した支持ができ、骨折部位が短縮転位するのを十分に防止できる。   In the internal fixation material for the distal end of the radius of the present invention, since the locking pin for fixing the distal end of the reinforcing plate has a curved axis, the axis can be inserted along the inner surface of the cortical bone on the joint surface side. And the bone surface can be supported by the entire shaft. Therefore, stable support can be achieved, and the fracture site can be sufficiently prevented from being shortened and dislocated.

次にこの発明の実施の形態を添付図面に基づき詳細に説明する。図１はこの発明の内固定材を撓骨遠位端に取り付けた状態の平面図、図２は内固定材を取り付けた撓骨遠位端の断面図である。   Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a plan view showing a state in which the internal fixation material of the present invention is attached to the distal end of the radius, and FIG. 2 is a sectional view of the distal end of the radius to which the internal fixation material is attached.

内固定材１は、補強用プレート２と、補強用プレート２の遠位部アーム３を固定するロッキングピン４と、プレート近位部５を固定するためのスクリュー６を有する。橈骨遠位端７を骨折した場合、骨折部８を整復するため補強用プレート２を設置し、遠位にロッキングピン４を刺入すると共に近位の骨幹部９にもスクリュー６を捻じ込んで固定する。   The inner fixing member 1 includes a reinforcing plate 2, a locking pin 4 that fixes the distal arm 3 of the reinforcing plate 2, and a screw 6 that fixes the plate proximal portion 5. When the distal radius 7 is fractured, the reinforcing plate 2 is placed to reduce the fracture 8, the locking pin 4 is inserted distally, and the screw 6 is screwed into the proximal diaphysis 9. Fix it.

ロッキングピン４は、橈骨遠位端７の関節面側１０の皮質骨１１の内面１１ａに沿って刺入し得る湾曲軸４ａを有する。このロッキングピン４を皮質骨内面１１ａに沿うように刺入するため、例えば図３に示すように橈骨遠位端７の皮質骨１１に図示しないドリルにて孔部を穿設した後、関節面側の皮質骨１１の断面形状に合致した曲面（例えば、半径Ｒ＝９〜１５ｍｍ）を有する骨ノミ１２（φ１．８〜２．１ｍｍ）を刺入して海綿骨１３内に下穴１３ａを形成する。   The locking pin 4 has a curved axis 4 a that can be inserted along the inner surface 11 a of the cortical bone 11 on the joint surface side 10 of the distal radius 7. In order to insert this locking pin 4 along the cortical bone inner surface 11a, for example, as shown in FIG. 3, after drilling a hole in the cortical bone 11 at the distal end 7 of the radius with a drill (not shown), A bone flea 12 (φ1.8 to 2.1 mm) having a curved surface (for example, radius R = 9 to 15 mm) matching the cross-sectional shape of the cortical bone 11 on the side is inserted, and a pilot hole 13 a is formed in the cancellous bone 13. Form.

なお、下穴を形成せず、皮質骨１１に孔部を穿設した後、ロッキングピン４を直接海綿骨１３内に刺入する手法でもよい。   In addition, after forming a hole in the cortical bone 11 without forming a pilot hole, a technique of inserting the locking pin 4 directly into the cancellous bone 13 may be used.

ロッキングピン４の頭部は補強用プレート２に固定されるが、この詳細を図４に示す。補強用プレート２の遠位部アーム３には、複数のロッキングホール３ａを穿設し、その内面には雌ネジ３ｂを螺刻する。このロッキングホール３ａには、中空ネジ体４ｃが螺合する。中空ネジ体４ｃは、外面に雄ネジ、中空面４ｄには雌ネジを形成する。   The head of the locking pin 4 is fixed to the reinforcing plate 2, and details thereof are shown in FIG. 4. The distal arm 3 of the reinforcing plate 2 is provided with a plurality of locking holes 3a, and female screws 3b are threaded on the inner surface thereof. A hollow screw body 4c is screwed into the locking hole 3a. The hollow screw body 4c has a male screw on the outer surface and a female screw on the hollow surface 4d.

ロッキングピン４を補強用プレート２に固定する際には、ロッキングホール３ａに湾曲軸４ａを遊挿しながら骨内の所定深さまで刺入するが、その時ロッキングピン４の頂部ネジ体４ｂがロッキングホール３ａ内に納まるように設定する。次に中空ネジ体４ｃをロッキングホール３ａに捻じ込みながら、その中空面４ｄに形成する雌ネジにロッキングピン４の頂部ネジ体４ｂが螺合するように調整し、中空ネジ体４ｃをドライバーを用いて締め上げ固定する。   When the locking pin 4 is fixed to the reinforcing plate 2, the curved shaft 4a is inserted into the locking hole 3a to a predetermined depth in the bone, and the top screw body 4b of the locking pin 4 is inserted into the locking hole 3a. Set to fit within. Next, while screwing the hollow screw body 4c into the locking hole 3a, an adjustment is made so that the top screw body 4b of the locking pin 4 is screwed into the female screw formed on the hollow surface 4d, and the hollow screw body 4c is used with a screwdriver. Tighten and fix.

この発明の橈骨遠位端用内固定材は、掌側プレートのみならず背側プレートにも適用可能である。   The internal fixation material for the distal end of the radius of the present invention can be applied not only to the palm side plate but also to the back side plate.

内固定材を撓骨遠位端に取り付けた状態の平面図である。It is a top view of the state which attached the internal fixing material to the distal end of the radius. 内固定材を取り付けた撓骨遠位端の断面図である。It is sectional drawing of the distal end of the radius with the internal fixation member attached thereto. 下穴を形成する際の撓骨遠位端の断面図である。It is sectional drawing of the distal end of a radius when forming a pilot hole. ロッキングピンの頭部構成を示す拡大断面図である。It is an expanded sectional view which shows the head structure of a locking pin. 従来の内固定材を撓骨遠位端に取り付けた状態の正面図である。It is a front view of the state which attached the conventional internal fixing material to the distal end of the radius. 従来の内固定材を取り付けた撓骨遠位端の断面図である。It is sectional drawing of the distal end of the radius with the conventional internal fixation material attached thereto.

符号の説明Explanation of symbols

１ 内固定材
２ 補強用プレート
３ 遠位部アーム
４ ロッキングピン
４ａ 湾曲軸
７ 橈骨遠位端
８ 骨折部
１０ 関節面側
１１ 皮質骨
１２ 内面 DESCRIPTION OF SYMBOLS 1 Internal fixation material 2 Reinforcing plate 3 Distal arm 4 Locking pin 4a Curved shaft 7 Distal distal end 8 Fracture part 10 Joint surface side 11 Cortical bone 12 Inner surface

Claims (1)

橈骨先端部骨折を整復固定するために用いる骨折部補強用プレートと、この補強用プレートの遠位部に穿設する遠位ロッキングホールに挿入してプレートを固定するロッキングピンとを有する橈骨遠位端用内固定材において、前記ロッキングピンは、橈骨遠位端関節面側の皮質骨内面に沿って刺入し得る湾曲軸を有することを特徴とする橈骨遠位端用内固定材。   A distal end of the radius having a fracture portion reinforcing plate used for reducing and fixing the fracture of the distal end of the radius, and a locking pin that is inserted into a distal locking hole drilled in a distal portion of the reinforcing plate and fixes the plate The internal fixation material for distal radius, wherein the locking pin has a curved axis that can be inserted along the inner surface of the cortical bone on the joint surface side of the distal radius.
JP2006009505A 2006-01-18 2006-01-18 Internal fixing material for distal radius Pending JP2007190115A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120203228A1 (en) * 2010-05-07 2012-08-09 Osteomed L.P. System for Treating Bone Fractures
US9833270B2 (en) 2013-09-19 2017-12-05 Mcginley Engineered Solutions, Llc Variable angle blade plate system and method
JP2018149298A (en) * 2017-03-13 2018-09-27 グローバス メディカル インコーポレイティッド Volar distal radius stabilization system
US11278332B2 (en) 2016-08-17 2022-03-22 Globus Medical, Inc. Distal radius stabilization system
US11331128B2 (en) 2016-08-17 2022-05-17 Globus Medical Inc. Distal radius stabilization system

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10111688B2 (en) 2010-05-07 2018-10-30 Mcginley Engineered Solutions, Llc System for treating bone fractures
US8603148B2 (en) * 2010-05-07 2013-12-10 Raymond B. Raven, III System for treating bone fractures
US20140094804A1 (en) * 2010-05-07 2014-04-03 Raymond B. Raven, III System for treating bone fractures
US9066766B2 (en) 2010-05-07 2015-06-30 Osteomed Llc System for treating bone fractures
US9295506B2 (en) 2010-05-07 2016-03-29 Osteomed Llc System for treating bone fractures
US9649141B2 (en) * 2010-05-07 2017-05-16 Mcginley Engineered Solutions, Llc System for treating bone fractures
US20120203228A1 (en) * 2010-05-07 2012-08-09 Osteomed L.P. System for Treating Bone Fractures
US9833270B2 (en) 2013-09-19 2017-12-05 Mcginley Engineered Solutions, Llc Variable angle blade plate system and method
US10117689B2 (en) 2013-09-19 2018-11-06 Mcginley Engineered Solutions, Llc Variable angle blade plate system and method
US11278332B2 (en) 2016-08-17 2022-03-22 Globus Medical, Inc. Distal radius stabilization system
US11331128B2 (en) 2016-08-17 2022-05-17 Globus Medical Inc. Distal radius stabilization system
US11986225B2 (en) 2016-08-17 2024-05-21 Globus Medical Inc. Distal radius stabilization system
US11992252B2 (en) 2016-08-17 2024-05-28 Globus Medical, Inc. Distal radius stabilization system
US12004790B2 (en) 2016-08-17 2024-06-11 Globus Medical, Inc Volar distal radius stabilization system
JP2018149298A (en) * 2017-03-13 2018-09-27 グローバス メディカル インコーポレイティッド Volar distal radius stabilization system

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