WO2000003647A1 - Dispositif orthopedique - Google Patents

Dispositif orthopedique Download PDF

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Publication number
WO2000003647A1
WO2000003647A1 PCT/GB1999/002291 GB9902291W WO0003647A1 WO 2000003647 A1 WO2000003647 A1 WO 2000003647A1 GB 9902291 W GB9902291 W GB 9902291W WO 0003647 A1 WO0003647 A1 WO 0003647A1
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WO
WIPO (PCT)
Prior art keywords
struts
strut
orthopaedic
pivoting
mounting members
Prior art date
Application number
PCT/GB1999/002291
Other languages
English (en)
Inventor
Roger Michael Atkins
Original Assignee
Roger Michael Atkins
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Roger Michael Atkins filed Critical Roger Michael Atkins
Priority to AU50494/99A priority Critical patent/AU5049499A/en
Publication of WO2000003647A1 publication Critical patent/WO2000003647A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/60—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like for external osteosynthesis, e.g. distractors, contractors
    • A61B17/62—Ring frames, i.e. devices extending around the bones to be positioned
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/60—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like for external osteosynthesis, e.g. distractors, contractors
    • A61B17/64—Devices extending alongside the bones to be positioned
    • A61B17/6458—Devices extending alongside the bones to be positioned with pin-clamps fixed at ends of connecting element

Definitions

  • the present invention relates to an orthopaedic frame for use in correction of bone and soft tissue deformities, limb lengthening or treatment of fractures.
  • Ilizarov frame In its simplest form it consists of two mountings interconnected by four rods. Each mounting itself has two axially- spaced rings, and each two ring mounting in use is firmly attached to a segment of bone by wires or pins. The rings are typically parallel, spaced apart perpendicular to their planes and aligned at right angles to the long axis of the bone segment to which they are attached.
  • the two ring mountings are themselves connected together by four extensible struts attached to one of the rings of each mounting so that the two segments of bone can be compressed together or moved apart by gradual or rapid shortening or lengthening of the struts, so compressing or distracting the "focus" of activity which lies between the two bone segments.
  • bone as used herein may be used with reference to parts of the body including a number of bone elements.
  • the Ilizarov frame may be located on a patient's leg with its two mountings respectively attached to the tibia and femur so that the frame is attached across the knee joint as the focus.
  • a more complex Ilizarov frame may have more than two mountings, so that two or more foci can be independently controlled by adjacent mountings.
  • each mounting may have more or less than two rings and the simple ring may be modified at special sites according to the local anatomy.
  • the upper rings may be replaced by open arcs for patient comfort.
  • the full rings are often replaced by arcuate elements which make up only five eighths of a circle in order to allow a fuller range of knee movement.
  • the actions that the Ilizarov frame described above can perform on a bone are limited to stretching (distraction) or compressing the focus.
  • Such frames may allow correction of other deformities, including any one or more of angulation and translation of the bone segments with respect to each other, rotation of one bone segment with respect to the other in an axis parallel to the long axis of the bone segment, and shortening or lengthening of the focus.
  • the devices used to interconnect the mounting rings are complex, cumbersome and heavy and relatively inflexible; it is for example extremely difficult to perform rotation and angulation simultaneously using the traditional frame system. For this reason variations of the Ilizarov frame have been proposed, including "translation/rotation" boxes, which are simpler to fit than the original frame and allow simple translation or rotation to be performed easily, often with the addition of an extra ring between the mountings.
  • the two mountings are connected by six variable length struts, each of which is connected at its two ends to the respective mounting rings by universal joints.
  • the connections between the rings and struts are regularly spaced around the rings, with 3-fold rotational symmetry.
  • Variations in the lengths of the struts can produce any desired relative orientation of the mountings and hence of the underlying bone segments, including rotation, angulation, translation, elongation or any combination of these.
  • control of the device is extremely complicated, because it is impossible to determine intuitively what changes in the length of each strut are needed. For this reason, deformity correction must usually be carried out using a microcomputer.
  • Measurements of the deformity are entered into the computer, which calculates the exact strut length changes required to correct the deformity.
  • the process of measurement of deformity and computer calculation may have to be performed several times .
  • the electronic circuitry necessary to perform this operation raises the cost of the frame considerably.
  • the Taylor frame is unnecessarily complex for the majority of deformity corrections, which require correction of angulation and translation in one plane only, without a simultaneous rotational deformity correction around the long axis of the bone segments.
  • Angulation may be defined as a relative rotation of the bone segments about a central axis at right angles to the longitudinal axis of the bone segment, and translation may be considered as an angulation in which the radius of the curve is infinitely long. It follows that where there is a need for both angulation and translation, angulation by rotation of one bone segment with respect to the other through an appropriate axis of the angulation can also perform the required translation, while angulation through an incorrect axis will induce unwanted translation. In the simple Ilizarov frame, angulation is accomplished by the use of frame hinges about which the mountings and therefore the attached bone segments rotate.
  • the hinges must be placed precisely at the axis of the deformity. This may be difficult or impossible. There may also be a need to modify the axis of the deformity during correction, because of imprecise initial assessment or because the frame buckles or the mounting wires distort.
  • the present invention seeks to provide an orthopaedic frame that at least partially alleviates some of the above problems by providing a hinge system, which allows independent control of angulation and translation in one plane.
  • the invention proposes that the mounting rings are interconnected by a variable length strut arrangement which allows the segments of bone to be relatively angulated and translated independently in a single plane.
  • This device is simpler than the Taylor frame described above, but when appropriately located in relation to the axis and plane of the focus and deformity, is capable of performing the bone correction operations obtainable from the Taylor frame provided that, as is often the case, misalignments lie substantially in one plane. This is because the plane in which the bone connection members are allowed to move relative to one another can be selected in accordance with the bone correction operation to be performed.
  • the simpler geometry of the frame means that it can be much simpler to install and may not require complicated control circuitry or mechanical components thus reducing its cost.
  • the invention provides an orthopaedic frame comprising: two mounting members for connection to a bone or to respective bone segments; one or more variable length struts extending between the mounting members, the or each strut being pivotable with respect to both the mounting members in respective pivoting planes, the pivoting planes of said strut or all said struts with both the mounting members being parallel; and means for selectively fixing the angles the or at least one strut makes with each of the mounting members; wherein the first mounting member is not pivotable relative to the other mounting member perpendicular to the pivoting planes.
  • the first mounting member is prevented from rotating relative to the second mounting member perpendicular to the pivoting planes by ensuring that the connections between (some or all of) the struts and the mounting members only allow relative rotation in a single plane (the pivoting plane) .
  • the invention provides an orthopaedic frame comprising: two mounting members for connection to a bone or to respective bone segments; one or more variable length struts extending between the mounting members, the or each strut being pivotable with respect to both the mounting members in respective pivoting planes, the pivoting planes of said strut or all said struts with both the mounting members being parallel; and means for selectively fixing the angles the or at least one strut makes with each of the mounting members; wherein the length of any one of said one or more struts and said angles determine the relative orientation of the mounting members.
  • the mounting members are preferably rings which encircle the limb of the patient. It is to be understood that as in the prior art, the mounting members need not be connected directly to the bone of the patient, but may instead be connected via an auxiliary ring spaced from the mounting member and co- planar therewith.
  • the auxiliary ring may carry pins which project inwardly to contact and/or penetrate the bone of the patient.
  • the auxiliary ring may be rotatable relative to the mounting ring between different fixed rotational alignments, to torsion or rotate the bone around its longitudinal axis.
  • the ends of the struts are preferably arranged so that there is a plane of mirror symmetry parallel to the pivoting plane.
  • the struts of the frame include four primary struts arranged in two pairs, a first pair on one side of the plane of symmetry, and a second pair on the other side of the plane of symmetry.
  • the four end points of the two primary struts are the points of a trapezoid
  • the trapezoid is the mirror image of a trapezoid defined by the four ends of the other pair of struts .
  • the angle which the primary struts make with the mounting members is fixed by providing for each pair of primary struts a variable length support strut having one end located at or near the connection point between the primary strut and the first of the mounting members, and the other end located at or near the connection point between the other primary strut of the same pair and the other of the mounting members .
  • the support struts then extend substantially diagonally relative to the trapezoid referred to above.
  • the support struts are pivotable in the pivoting plane about both of their ends.
  • the angle which each primary strut makes with each of the mounting members can be independently altered and fixed, for example to deform the trapezoids into trapezia.
  • the pivotal connection between the mounting member and one primary strut of the first pair is a common pivot with the connection between the mounting member and a primary strut of the other pair.
  • each of the struts (primary struts and support struts) is preferably substantially straight, but this is not a necessary feature of the invention. Rather, any or all of the struts may, for example, have an S-shaped configuration, for example including a linear section of variable length.
  • each strut need not be coplanar (although this is preferable for simplicity) although they must be parallel.
  • the pivoting plane of one of each pair of primary struts with one mounting member is coplanar with the pivoting plane of the other of the pair of primary struts with the other mounting member, this too is not a necessary feature.
  • the support struts may extend obliquely (i.e. having a component of their direction perpendicular to the pivot mirror plane. However in this case, elongation of the strut will usually need to be substantially parallel to the pivoting plane) .
  • connection points between the primary struts and each mounting member are preferably arranged so that they define a rectangle by arranging the two primary struts of each pair so that the pivoting planes of the two pairs of struts are the same.
  • this concept constitutes a further, independent aspect of the invention.
  • the invention provides an orthopaedic frame comprising: two mounting members for connection to a bone; four struts extending between the mounting members, each strut being pivotable with respect to both the mounting members in respective pivoting planes, the pivoting planes of all of the struts with both the mounting members being parallel; and means for selectively fixing the angle at least one strut makes with each of the mounting members; wherein the connections between the first mounting member and the four struts are arranged in a substantially rectangular configuration, preferably in a substantially square configuration.
  • the struts used herein are preferred to be axially rigid, not being hinged except to the respective mounting members .
  • the invention also provides a method of treating a bone or soft tissue deformity, misalignment, contracture, discontinuity or any other abnormality using any apparatus according to the invention as described herein.
  • Figure 1 shows a first embodiment of the invention
  • Figure 2 illustrates re-arrangements of the embodiment of Figure 1;
  • Figure 3 illustrates the embodiment of Figure 1 m place on a bone
  • Figure 4 illustrates a second embodiment of the invention
  • Figure 5 illustrates a third embodiment of the invention
  • Figure 6 illustrates a fourth embodiment of the invention
  • Figure 7 illustrates a fifth embodiment of the invention.
  • Figure 8 illustrates a sixth embodiment of the invention.
  • a first embodiment of a frame according to the invention is shown m relation to a set of three dimensional axes X-Y-Z.
  • the frame has two ring-shaped mounting members, "rings", 1,2, mutually connected by primary struts 3,4,5,6.
  • the rings 1,2 lie m the X-Y plane, whereas the primary struts 3,4,5,6 are all m the Z-direction.
  • Each of the struts 3,4,5,6 is of variable length, with a screw device 7 is located at an intermediate portion along each strut for controllably and incrementally varying its length.
  • Such variable-length struts are well known in this field. Generally they are straight, but the invention is not limited in this respect.
  • FIG. 1 there are two pairs of primary struts, a first pair 3,5 and a second pair 4,6. Their ends are labelled A-H in Figure 1.
  • the upper ends F, E of the struts 3,4 each pivot bar about the ring 1 on a pivot 8 extending in the X-direction.
  • Other, parallel pivots 8 are provided to connect upper, or respectively lower, ends of two struts from different pairs (i.e. A and B; C and D; and G and H) . Since all of the pivots 8 are parallel (in the X-direction) the struts 3,4,5,6 are constrained to pivot in the Y-Z plane. Thus, the rings 1,2 can be relatively rotated around the X-axis in the Y- Z plane.
  • the traversing pivot bars 8 are not essential but provide a useful practical way of maintaining all the pivoting planes parallel.
  • the rings 1,2 are parallel, and remain so on relative movements of the rings 1,2 due to pivoting of the primary struts 3,4,5,6 in the Y-Z plane.
  • the rings 1,2 can be relatively separated in the Z-direction by varying the lengths of the struts 3,4,5,6 using their length adjusters 7. As explained below, a combination of rotation in the Y-Z plane and translation in the Z-direction provides the option of translation in the Y-direction. However, no relative rotation of the rings 1,2 is possible about either of the Y-axis or the Z-axis.
  • Support struts 9,10 extend between the primary struts 3,4,5,6.
  • primary struts 3,5 compose two sides of the parallelogram and support strut 9 extends across the diagonal CF. Accordingly, variations in the length of the support strut 9, using a length adjuster 17, control the angle between the primary struts 3,5 and the Z-axis. For example, shortening of the support struts 9 requires that the struts 3, 5 rotate away from the Z-axis and towards the Y-axis: translation in the Y-Z plane.
  • the length adjuster 17 therefore provides selective adjustment and fixing of the angle between the struts 3,5 and the rings 1,2.
  • the points of connection between the struts 3,4,5,6 and the rings 1,2 are selected so that at each ring 1,2 the connection points are the points of a square ABDC, FEGH.
  • the points of connection may be chosen otherwise.
  • the pivots 8 ensure that the shape ABDC is a trapezium, the trapezium need not be a square, and need not even be rectangular or indeed quadrilateral.
  • the relative orientation of the rings 1,2 is fully determined by the lengths of the primary struts 3,5 and support struts 9 (i.e. from two primary struts of the same pair and the support strut which connects them).
  • the second pair of struts 4,6 and the support strut 10 provide mechanical support. Movements of the struts 3,5,9 must be matched by movements of the struts 4,6,10. In principle, if the struts 3,5,9 and their pivots were strong and strict enough, the extra set of struts 4,6,10 could be omitted.
  • FIG 2 various arrangements of the embodiment of Figure 1 are illustrated schematically.
  • the pivots 8 and support struts 9,10 have been omitted.
  • the arrangement in Figure 2 (a) is as in Figure 1: the rings lie in the X-Y plane and the struts extend in the Z-direction.
  • the separation of the rings in the Z-direction is referred to herein as h z .
  • Angulation of the rings 1,2 about the X-axis is adjustable by differentially adjusting the length of the struts 3,4 vis a vis the struts 5,6; see Figure 2(d).
  • the frame can be easily adjusted in any combination of translational motions in the Z-direction and/or Y-direction or rotations about the X-axis. However, no rotations about the Y-axis or Z-axis are possible .
  • the first embodiment is shown attached to a bone 12.
  • Two auxiliary rings 13,14 are shown, each attached conventionally by a plurality of pins 15 to a respective portion of the bone 12.
  • the rings 1,2 of the first embodiment are rigidly attached to the auxiliary rings 13,14 by connection struts 17. It is possible to connect each auxiliary ring 13,14 to its rings 1,2 in a way that allows rotational adjustment of the auxiliary rings 13,14 in their own planes relative to the rings 1,2, e.g. with a drive to actuate this rotation. Thus, it is possible to torsion the bone about the Z-axis.
  • the support struts 19,20 are not connected at their ends to pivots 8, but instead at pivot positions slightly displaced around the rings 1,2.
  • the support struts 19,20 nevertheless, as before, are pivotable in planes parallel to those of the primary struts 3,4,5,6.
  • the lengths of the support struts 19,20 determine the angles which the struts 3,4,5,6 make with the two rings 1,2. It would equally be possible, although it is less mechanically convenient, to attach the support struts 19,20 to intermediate positions along the two struts of each respective pair of struts (e.g. such that support strut 19 extends between intermediate positions of the struts 3 and 5) .
  • FIG. 5 A third embodiment of the invention is illustrated with respect to Figure 5.
  • this embodiment there are only three primary struts 3,4,25 extending in the Z- direction.
  • each of the primary struts is arranged to pivot at both ends about the ring 1,2.
  • the support struts 29,30 extend from a first ring 1 to end portions of the pivot 28 on which the primary strut 25 rotates.
  • the pivots 8 and 28 are parallel, so that at the primary struts 3,4,25 pivot in parallel planes.
  • the struts are arranged such that the frame has a plane of mirror symmetry parallel to the pivoting plane and half way between the struts 3 and 4.
  • the struts 3 and 5 of the first embodiment correspond respectively to the struts 4 and 6, that is the other pair of struts.
  • the mirror symmetry of all three embodiments is preserved on rotation of the primary struts about the rings 1,2 in the pivoting plane.
  • Some variants do not have mirror symmetry, e.g. by having pivoting planes shifted in the X-direction.
  • FIG. 6 shows a fourth embodiment of the invention in which the rings 1,2 are connected by only a single primary strut 3 of high rigidity and strength, which is connected to the rings 1,2 at its ends A, F.
  • a pivotal connection element 31,33 At each of the ends of the primary strut 3 is a pivotal connection element 31,33.
  • Each of the pivotal connection elements 31,33 permits the primary strut 3 to rotate about the corresponding mounting ring 1,2 in a pivoting plane parallel to the Y and Z axes and perpendicular to the X- axis. These two pivoting planes are parallel.
  • the pivotal connection elements 31,33 are each capable of fixing the adjustable angle which the primary strut 3 makes with the respective mounting ring 1,2.
  • the length of the primary strut 3 can be varied by variation of the length adjuster 7.
  • the mountings do not have to be rings or even arcs of a circle. Any shape of mounting may be used in line with current practice. They do not always have to encircle the bone, and may each be, e.g. a simple block (or a bar, or a set of connected bars) attachable by pins to one side of the bone.
  • Figure 7 shows a fifth embodiment of the invention in which the primary struts 3,4,5,6 extend in a direction having a component parallel to the X-direction, but, as before, are each constrained by their mechanical pivots to pivot in the XY plane.
  • This fifth embodiment can have traversing common pivot bars 8 corresponding to the pivots 8 shown in Figure 1, and support struts corresponding to support struts 9,10 shown in Figure 1, but for simplicity these are not shown in Figure 7.
  • a mirror plane of symmetry exists perpendicular to the X-axis. This plane of symmetry is useful for simplicity but is not essential, providing that all the pivoting planes are parallel and the connection points E,G,B,D are displaced from the connection points F,H,A, C by displacement in the X- direction only.
  • FIG 8 shows schematically a portion of a sixth embodiment of the invention.
  • This sixth embodiment of the invention is identical to the fifth embodiment of the invention, except that each of the primary struts 3,4,5,6 is replaced by a respective strut which is not straight along its entire length.
  • a single primary strut 36 e.g. corresponding to primary strut 5 in Figure 7
  • This primary strut has curved end regions, and a substantially straight central section (designated generally by the reference numeral 38), and a variable length component 39.
  • each primary strut in the sixth embodiment the end portions of each primary strut are perpendicular to the X-direction (that is lie in the pivoting plane) , although (as in the fifth embodiment) the two pivoting planes at the end of each strut are not the same as each other, but are relatively displaced in the X-direction.
  • the pivoting planes remain parallel.
  • the elongation of the variable length component 39 must be parallel to the pivoting plane.

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  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Medical Informatics (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)
  • Prostheses (AREA)

Abstract

L'invention concerne un châssis orthopédique destiné à corriger des déformations physiques. Il possède un premier et un deuxième anneaux de montage espacés (1, 2) qui peuvent être reliés par des moyens traditionnels à des parties d'un os espacées en longueur. Un ensemble d'entretoises principales (3, 4, 5, 6) à longueur réglable relie les anneaux entre eux. Les entretoises (3, 4, 5, 6) sont reliées aux anneaux de montage (1, 2) au niveau des raccords pivotants (A-H) qui limitent le mouvement pivotant à un seul plan de pivotement. Le réglage des positions angulaires relatives des deux anneaux de montage (1, 2) peut se faire uniquement dans ce plan, lesdits anneaux étant bloqués après le réglage, par exemple, par des entretoises de blocage (9, 10) réglables en longueur qui s'étendent obliquement. L'utilisation de ce mouvement pivotant dans un seul plan garantit la simplicité d'assemblage et d'utilisation tout en autorisant plusieurs réalignements correctifs.
PCT/GB1999/002291 1998-07-16 1999-07-16 Dispositif orthopedique WO2000003647A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU50494/99A AU5049499A (en) 1998-07-16 1999-07-16 Orthopaedic device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9815530.2 1998-07-16
GBGB9815530.2A GB9815530D0 (en) 1998-07-16 1998-07-16 Orthopaedic device

Publications (1)

Publication Number Publication Date
WO2000003647A1 true WO2000003647A1 (fr) 2000-01-27

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ID=10835665

Family Applications (1)

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PCT/GB1999/002291 WO2000003647A1 (fr) 1998-07-16 1999-07-16 Dispositif orthopedique

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AU (1) AU5049499A (fr)
GB (1) GB9815530D0 (fr)
WO (1) WO2000003647A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8574232B1 (en) 2012-11-13 2013-11-05 Texas Scottish Hospital for Children External fixation connection rod for rapid and gradual adjustment
US8864750B2 (en) 2008-02-18 2014-10-21 Texas Scottish Rite Hospital For Children Tool and method for external fixation strut adjustment
US9078700B2 (en) 2008-02-12 2015-07-14 Texas Scottish Rite Hospital For Children Fast adjust external fixation connection rod
US9155559B2 (en) 2008-02-08 2015-10-13 Texas Scottish Rite Hospital For Children External fixator strut
US20160000465A1 (en) * 2014-07-07 2016-01-07 Texas Scottish Rite Hospital For Children Collapsible fixator system
US9295493B2 (en) 2008-02-05 2016-03-29 Texas Scottish Rite Hospital For Children External fixator ring
US9443302B2 (en) 2010-08-20 2016-09-13 Amei Technologies, Inc. Method and system for roentgenography-based modeling

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2559380A1 (fr) * 1984-02-13 1985-08-16 Orthofix Srl Dispositif exterieur de fixation axiale orthopedique
US4922896A (en) * 1989-05-05 1990-05-08 John M. Agee Colles' fracture splint
US5358504A (en) * 1993-05-05 1994-10-25 Smith & Nephew Richards, Inc. Fixation brace with focal hinge
US5728095A (en) * 1995-03-01 1998-03-17 Smith & Nephew, Inc. Method of using an orthopaedic fixation device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2559380A1 (fr) * 1984-02-13 1985-08-16 Orthofix Srl Dispositif exterieur de fixation axiale orthopedique
US4922896A (en) * 1989-05-05 1990-05-08 John M. Agee Colles' fracture splint
US5358504A (en) * 1993-05-05 1994-10-25 Smith & Nephew Richards, Inc. Fixation brace with focal hinge
US5728095A (en) * 1995-03-01 1998-03-17 Smith & Nephew, Inc. Method of using an orthopaedic fixation device

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9808289B2 (en) 2008-02-05 2017-11-07 Texas Scottish Rite Hospital For Children External fixator ring
US9295493B2 (en) 2008-02-05 2016-03-29 Texas Scottish Rite Hospital For Children External fixator ring
US9155559B2 (en) 2008-02-08 2015-10-13 Texas Scottish Rite Hospital For Children External fixator strut
US9681892B2 (en) 2008-02-08 2017-06-20 Texas Scottish Rite Hospital For Children External fixator strut
US9456849B2 (en) 2008-02-12 2016-10-04 Texas Scottish Rite Hospital For Children Fast adjust external fixation connection rod
US9078700B2 (en) 2008-02-12 2015-07-14 Texas Scottish Rite Hospital For Children Fast adjust external fixation connection rod
US8864750B2 (en) 2008-02-18 2014-10-21 Texas Scottish Rite Hospital For Children Tool and method for external fixation strut adjustment
US9443302B2 (en) 2010-08-20 2016-09-13 Amei Technologies, Inc. Method and system for roentgenography-based modeling
US8574232B1 (en) 2012-11-13 2013-11-05 Texas Scottish Hospital for Children External fixation connection rod for rapid and gradual adjustment
US9381042B2 (en) 2012-11-13 2016-07-05 Texas Scottish Rite Hospital For Children External fixation connection rod for rapid and gradual adjustment
US9579122B2 (en) 2014-07-07 2017-02-28 Texas Scottish Rite Hospital For Children Collapsible fixator system
CN106659523A (zh) * 2014-07-07 2017-05-10 德克萨斯苏格兰礼仪儿童医院 可折叠的固定器系统
WO2016005841A1 (fr) * 2014-07-07 2016-01-14 Texas Scottish Rite Hospital For Children Système de fixation pliable
JP2017524449A (ja) * 2014-07-07 2017-08-31 テキサス スコティッシュ ライト ホスピタル フォー チルドレン 折畳み式固定器システム
US20160000465A1 (en) * 2014-07-07 2016-01-07 Texas Scottish Rite Hospital For Children Collapsible fixator system
AU2015287388B2 (en) * 2014-07-07 2019-06-13 Texas Scottish Rite Hospital For Children Collapsible fixator system

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Publication number Publication date
GB9815530D0 (en) 1998-09-16
AU5049499A (en) 2000-02-07

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