Abstract: An external load bearing distracting device, which can be positioned to fully unload a knee joint cartilage while providing the knee joint normal motion, for an articulating anatomical joint. The device includes first and second rotatable extensions arranged longitudinally on opposite sides of the joint, and first and second translational inserts slidably arranged inside the first and second rotatable extensions, respectively. The joint may comprise a ball-and-ring-joint or a cardan joint. The first and second translational inserts include a threaded portion and a pair of threaded nuts thereon, which abut a retainer on each of the first and second rotatable extensions to limit longitudinal translation. The external load-bearing distracting device is temporarily attached to the patient, preferably for a period of 6 to 8 weeks, and is intended for use to treat osteoarthritis, focal cartilage defects, and fractures inside the knee joint, among other conditions of articulating anatomical joints.

Abstract: A device includes a plurality of rings. Each ring has a first face, a second face, and at least one slot defined by first and second interior edges of the ring on opposing sides of the slot. The at least one slot penetrates from the first face to the second face. The first face of each ring has a first recess adjacent the slot on the first edge and a second recess adjacent the slot on the second edge. A plurality of posts join each one of the plurality of rings to an adjacent one of the plurality of rings.

Abstract: An adjustable dynamic distraction mechanism connects proximal and distal components of a fixator system to enable adjustment of the distraction between proximal and distal bones of a joint and fixation thereof. The device is dynamic in that once fixation of distraction is set, the distal portion of the anatomy may be permitted to move essentially freely to flex and extend by rotation at the natural axis of the joint.

Abstract: The current invention relates to an adjustable mandibular advancement device with a unique combination of resilient hinging and adjustability to prevent or reduce snoring and/or obstructive sleep apnea syndrome. The adjustability is described by means of two concepts of adjustability for the relative enlargement or diminution of the members of the device, incremental and successive advancement mechanisms, in either combination or separately. By use of thermoplastic materials the device can be used in the outmost variability of the human dentition.

Abstract: The present disclosure provides an adjustable external fixator which can be utilized in bone transport or bone lengthening. The adjustable external fixator includes a body, a positioning member, a bone coupling member, and a threaded rod. The body includes a slideway. At least one of the positioning member and the bone coupling member is slidably coupled to the slideway of the body.

Abstract: Articulated device (1) for the wrist comprising: a proximal connector (2) for housing a proximal attachment system for pins; —a distal connector (3) for housing a distal attachment system for pins; an articulator joint (4) to provide a controlled movement between the proximal connector (2) and the distal connector (3), characterized in that said articulator joint (3) comprises an arched element (5) that is rotatably mounted on a support element (6) in order to enable rotation around an axis of rotation (X) corresponding to the axis of rotation by flexion and extension of the wrist, said arched element (5) being directly connected to the distal connector (3), blocking means (51) to block the rotation of the arched element (5) and rotation-limiting means (53) to limit the rotation of the arched element (5) for a pre-established portion of a circumferential arc are both directly mounted on said support element (6), and in that said support element (6) is mounted by means of a simple cardan joint (40) on the prox

Abstract: Apparatus and methods for preparing a fractured bone for repair. Preparing the bone may include fracture reduction. Preparing the bone may include holding a fracture in reduction. Preparing the bone may include identifying locations for obtaining access to an interior region of the bone. The apparatus may include structures outside the bone that interact with fragments of the bone. The structures may participate in the reduction. The structures may participate in holding the reduction. The structures may participate in identifying the locations.

Abstract: An external fixation system includes first and second fixation members having first and second pluralities of mounting holes, respectively. The first and second plurality of holes are configured to receive first and second ends of a plurality of struts, each strut having a default or initial mounting position. A simulation of the correction may be performed with the struts in the default positions, but it may be determined that the correction is not achievable. Additional simulations of the correction may be performed with the ends of the struts in different mounting positions to determine if other mounting positions of the struts allow the correction to be completed. During the correction, if one of the struts reaches a maximum length, it may be disconnected and reconnected to a different mounting hole so that, after being reconnected, the strut may be further increased in length to continue the correction.

Abstract: An orthopaedic implant knee hinge and surgical method for minimally invasive insertion of the orthopaedic implant knee hinge. The apparatus and method stabilizes the knee in patients after ligament surgery, conventional fixation of supracondylar and intracondylar fractures of the femur and/or tibial plateau and proximal tibia fractures. The knee hinge is inserted subcutaneously (but supra-muscularly) on one of both of the medial or lateral side of the knee.

Abstract: The current invention relates to an adjustable mandibular advancement device with a unique combination of resilient hinging and adjustability to prevent or reduce snoring and/or obstructive sleep apnea syndrome. The adjustability is described by means of two concepts of adjustability for the relative enlargement or diminution of the members of the device, incremental and successive advancement mechanisms, in either combination or separately. By use of thermoplastic materials the device can be used in the outmost variability of the human dentition.

Abstract: An external fixation system for adjusting a load occurring at a joint connecting a first bone to a second bone. The external fixation system includes a first bone clamp to connect to the first bone, a second bone clamp to connect to the second bone, and a pivot assembly to operatively connect the first bone clamp and to the second bone clamp. The pivot assembly includes a first pivot body pivotably coupled to a second pivot body at a pivot axis, wherein one of the first pivot body and the second pivot body includes an adjustment mechanism configured to adjust the position of one of the first pivot body and the second pivot body with respect to the other of the first pivot body and the second pivot body at other than the pivot axis.

Abstract: Total knee replacements for hinged knee implants include a tibial member, a femoral member, a hinge assembly having a laterally extending axle configured to hingedly attach the femoral member to the tibial member, and a lock mechanism in communication with the hinge assembly. The lock mechanism is configured to (i) lock the femoral member in alignment with the tibial member for a full extension or other defined stabile walking configuration to thereby allow an arthrodesis or stiff knee gait and (ii) unlock to allow the femoral and tibial members to pivot relative to each other for flexion or bending when not ambulating.

Abstract: A bone spreader includes two tubular pin holders which are connected to one another by a parallel guide system, and two pins that are configured to be connected to the bone parts that are to be spread apart. In order to give the bone parts that are to be spread apart a more secure position in relation to one another, at least one of the pin holders is provided with a locking device for a pin located in the pin holder. This locking device includes a locking finger which is movable tangentially with respect to the pin holder and which, in the locking position, engages in a transverse groove of the associated pin and can be formed by a pivotably mounted hook.

Abstract: Ankle distraction or load bypassing devices include a shoe or shoe insert that securely holds a patient's foot, and a cuff that securely holds the patient's lower leg. A load bypassing device can transmit force between the cuff and the shoe or shoe insert bypassing a portion of the load around the joint. A distraction force generating mechanism between the cuff and the shoe or shoe insert can distract the patient's ankle, while permitting the ankle to flex at a joint which joins together the cuff and the shoe.

Abstract: A screw nail correcting apparatus used for treating ingrown nails seen in human feet and/or hands adapts to different nail widths and to the changes that may occur in time on the same nail and practically enables pulling of the nail with an amount of force complying with the requirement. The fact that the apparatus is not a single piece and that it can be mounted separately from both sides of the nail provides ease of use, and the screw mobile part in the middle thereof helps to adjust the tautness according to the requirement of the nail at the concerned moment.

Abstract: Ankle distraction or load bypassing devices include a shoe or shoe insert that securely holds a patient's foot, and a cuff that securely holds the patient's lower leg. A load bypassing device can transmit force between the cuff and the shoe or shoe insert bypassing a portion of the load around the joint. A distraction force generating mechanism between the cuff and the shoe or shoe insert can distract the patient's ankle, while permitting the ankle to flex at a joint which joins together the cuff and the shoe.

Abstract: A fixator system includes an active strut that that can be gradually or acutely adjusted. Adjustments can be made in six degrees of freedom. Embodiments of the active strut can provide for two of the six degrees of freedom being about a first common point of rotation, and another two of the six degrees of freedom being about a second common point of rotation. Embodiments of the fixator can include one or more active struts in combination with one or more passive struts. The passive struts can be rigidly locked or can be unlocked so as to be freely and acutely adjustable while gradual or acute adjustments are made using the one or more active struts.

Abstract: An external fixation system comprising: first and second planar at least part-circular ring elements, the first ring element having a circumferential track extending along the part-circular circumference thereof; a plurality of struts each having a first and second end, the first end of each strut coupled to the first ring by a first connector and the second end of each strut coupled to a second ring by a second connector, the first connector including a spherical joint; the second connector non-rotatably coupled to the second ring, the strut second end being coupled to the second connector by a U-joint; shuttles mounted on the track of the first ring for movement there along with one shuttle coupled to each strut; and means for controlling the angular position of each strut second end and means for controlling the position of each shuttle along the circumferential track on the first ring.

Abstract: A rotational correction system includes an implant having first and second sections, the implant having a rotatable permanent magnet disposed in a housing of the first section, the rotatable permanent magnet mechanically connected to a nut operatively coupled to the second section. A keyed portion is interposed between the nut and one or more non-linear grooves disposed on an inner surface of the housing. An external adjustment device having at least one rotatable magnet configured to rotate the rotatable permanent magnet of the implant is part of the system. Rotation of the rotatable permanent magnet of the implant in a first direction effectuates a clockwise change in the rotational orientation of the first section relative to the second section and rotation of the rotatable permanent magnet of the implant in a second direction effectuates a counter-clockwise change in the rotational orientation of the first section relative to the second section.

Abstract: An orthopedic joint hinge assembly includes a first elongated member, a first coupler attached to the first elongated member and including a first interface surface, a second elongated member, and a second coupler attached to the second elongated member and including a second interface surface. Each of the first and second couplers is constrained to rotate about an axis of rotation. The first and second interface surfaces are offset from the axis of rotation and engage each other to block a relative rotation between the first and second members in a first direction and separate from each other to permit a relative rotation in an opposite direction.

Abstract: An orthopedic device for fixating bone parts includes a set of one or more bone fixation pins for engaging a bone piece, an elongated fixator body having an internally threaded bore extending longitudinally therethrough, a pair of opposed longitudinally extending slots in the fixator body, and a pin-holder received within the fixator body and configured to removably hold the set of one or more bone fixation pins. The pin-holder is longitudinally movable within the fixator body for controlling the position of the set of bone fixation pins within the fixator body. The fixator body also can be configured to removably hold a second set of one or more bone fixation pins at a location fixed along the fixator body.

Abstract: A telescopic strut for use with an external fixator includes a tube and a rod, especially a threaded rod being in threaded engagement with the tube. The tube comprises at least one hole for accommodating a ball, the ball having the spherical shape for engagement with the threaded rod. A sleeve is provided on the portion of the tube comprising the hole. The sleeve comprises a non-spherical inner cross-section. The greater diameter of the sleeve has a dimension which is at least the sum of the outer diameter of the threaded rod plus the diameter of an accommodating ball for allowing direct axial movement of the threaded rod against the tube in such a rotational position of the sleeve. The lesser diameter has a dimension to place the ball within the threaded rod for allowing a rotational movement of the threaded rod against the tube.

Abstract: Adjustable restraint includes a plantar plate surrounded by a peripheral element about which a plurality of supports can be positioned; a support system attachable to that plate or element for providing vertical and horizontal support; and a lower leg securing housing. The housing is attachable to the support system through adjustable fastener(s) such it can be adjusted vertically and secured in position with respect to the plantar plate. A sole portion of the plantar plate may be removable. The support system can include first support(s) and second support(s) attachable to the plate or element, and, through first adjustable fastener(s) and second adjustable fastener(s), respectively, the first adjustable fastener(s) and second adjustable fastener(s) be attachable to the housing.

Abstract: An external fixation device for the extension of the distance between two clamping members of an external fixator has a central internal rod and an outer hollow housing. The internal rod is movable axially. One end of the internal rod projects over the one end of the housing, and serves to fix the one clamping member. An adjusting member is provided disposed at the other end of the housing and is connected with internal rod and/or the outer hollow housing, whereby the axial position of the interior shaft can be adjusted in relation to the housing by means of rotation of the adjusting member. Furthermore, an adjusting knob is provided that can be detachably attached to the adjusting member with an essentially positive fit.

Abstract: A method and apparatus for treatment of sleep apnea employs bone screws implanted into a patient's anterior maxillary bone above and posterior to the cuspids, and posterior mandibular bone below and between any of the posterior teeth. Elastics are stretched between the maxillary and mandibular bone screws to exert forces to bias the mandible forward with respect to the maxilla. An aligner can be placed between the patient's upper and lower to help maintain proper positioning of the mandible.

Abstract: An external fixation assembly for bone fusion is disclosed. The assembly includes an extension arm having a fixation joint portion and a pin element moveably disposed along the extension arm defining a first joint portion. The assembly further comprises a plurality of connecting pins for bone fusion. Each of the connecting pins is configured to engage with bone matter for bone fusion and to singly attach to one of the joint portions for support.

Abstract: The fixator is an apparatus for repairing fractures of the distal radius and wrist. Distal, pivot, distraction, and radial members provide an anatomically contoured, radiolucent apparatus that permits the wrist to move through a substantially normal range of motion. A means for distraction of the bones by the fixator is also provided. The fixator may be affixed to the lower arm and hand by spaced-apart elongate distal mounting pins with lower ends adapted or mounting in the metacarpal bone and by spaced-apart elongate radial mounting pins with lower ends adapted for mounting in the radius.

Abstract: An external fixator includes a main body and an outrigger for extending over a fractured joint, such as a wrist joint. The main body can be positioned next to a right arm, or flipped over and positioned next to a left arm. The outrigger is attachable to extend either to the left or to the right of the main body, as appropriate. A distal body is removeably connectable to the distal end of the main body, and the distal body can be affixed to bone on the opposite side of the fracture to immobilize the joint where the fracture occurs. The distal body is connected to the main body with an adjustable securement section which provides six degrees of adjustment freedom. The outrigger is attached to the main body through a slide plate in a dual rail configuration which provides two dimensions of adjustment. Fragment pin supports ride in a track of the outrigger, and provide seven degrees of adjustment freedom for directed fixation of fragments at the fracture site.

Abstract: By providing components securable to anchor pins or screws of different diameters as well as providing clamps which hold associated pins in any position during adjustments, an external fixation or adjustable frame structure is provided which is capable of being quickly and easily assembled in any desired configuration. In the present invention, the frame structure is retained in any assembled configuration in order to allow final adjustments to be made, prior to the final securement of the frame assembly in the precisely desired configuration by closure of each clamp member. In this way, an entire frame assembly is capable of being constructed, adjusted, and readjusted in order to assure each component is oriented in the precisely desired position prior to final closure of the clamping members.

Abstract: The invention relates to a fixing device for orthopedic applications, in which at least one coupling member is mounted in the connecting rod of, or the guiding rod for, the clamping members, intended for receiving orthopedic pins, which coupling member can be brought into a rigid or a flexible coupling position. Further, preferably it has been provided for, that in the flexible coupling position, the flexibility can be adjusted across a certain range.

Abstract: A joint of a human upper extremity is biased by an apparatus that includes a U-shaped frame, a distal attachment portion mounted to the frame through a biasing member and attachable to the extremity at a location distal to the joint, and a wrist brace or proximal attachment portion that attaches to the extremity at a location proximal to the joint, the frame being rotatable relative to both the distal attachment portion and the wrist brace. Up to four distal attachment portions can be attached to the same U-shaped frame to bias joints on each of four distinct extremities, such as four fingers on the same hand.

Abstract: A device immobilizes bones of a patient such as a surgically exposed femur and tibia during a knee replacement operation. The device has a vertical frame including a pair of first members and at least one second member bracing the first members. A support mechanism is mounted on the first members to permit adjustment of the height of the support mechanism. A first and second series of cantilever members is supported by the support mechanism. First and second bone engagement mechanisms are mounted on respective cantilever members and engage a patient's surgically exposed first and second bones.

Abstract: The same orthosis can be used to sequentially move joints of different fingers of a hand. A hand cuff of the orthosis is mounted on the hand. Mechanisms operable to move the joints are connected to the hand cuff at locations aligned with the fingers. The mechanisms are connected with the fingers. The joints of the fingers are moved by operating the mechanisms. The joints and first and second portions of the fingers define on one side of the joints outer sectors which decrease in angle as the joints are extended. Force is applied to the first and second portions of the fingers to move the joints by providing relative rotation between internally and externally threaded members disposed in the outer sectors. Actuator members connected with the internally or externally threaded members are moved along paths that extend through the joints.

Abstract: A joint support is attachable to a limb of an animal to limit movement of an associated limb joint substantially about a single axis. The joint support includes a radial element having a longitudinal axis and a transverse element having a longitudinal axis. The transverse element is pivotally connected to the radial element about an axis of rotation. The longitudinal axis of the radial element substantially intersects with the axis of rotation, and radial rotation of the radial element is restricted about the axis of rotation. The longitudinal axis of the transverse element is partially fixed relative to the radial element so that the same is substantially coplanar with the longitudinal axis of the radial element and substantially offset from the axis of rotation.

Abstract: An external fixator for securing a first bone portion in a fixed relationship with respect to a second bone portion includes a longitudinally extending rod and a bone screw clamping assembly. The bone screw clamping assembly receives at least one bone screw. The bone screw clamping assembly is mounted to the rod for relative universal movement about a point through which the rod passes and is normally permitted to longitudinally translate along an axis defined by the rod.

Abstract: A modular fixator assembly capable of allowing motion at the wrist during treatment of wrist fractures. The fixator assembly includes a distractor device, a pin outrigger attached to the distrator device, at least one pin for fixating the fracture fragments, and pin clamping assemblies for attaching the pin to the outrigger. The outrigger conforms to the anatomical configuration of the fractured bone thereby enabling direct fixation of the fracture fragments.

Abstract: An apparatus for adjustably securing the humerous, which is on a proximal side of elbow joint, relative to the ulna on the distal side of the elbow joint. The apparatus includes a central body having inner and outer ring members interconnected for relative rotation about a common mechanical axis adapted to align with the anatomical axis of the elbow joint. The central body defines a radiographic window for permitting lateral radiographic examination of the anatomical pivot axis of the elbow joint. The apparatus preferably includes a distraction mechanism for distracting the humerus perpendicular to the proximal end of the ulna.

Abstract: An orthopaedic apparatus, particularly for the surgical correction of angular and longitudinal defects of the bones of limbs, of the femur and tibia type, comprising a longitudinal rod externally positionable substantially parallel to a bone for correction, a first clamp movably anchored to the rod for supporting drilling guides for screws insertable in a proximal portion of the bone, and at least one second clamp movably anchored to the rod for supporting drilling guides for screws insertable in a distal portion of the bone. The first and second clamps are orientable and selectively lockable, before the surgical intervention, in predetermined angular positions with respect to the rod corresponding to the angular deformations of the bone, and are repositionable with respect to the rod in correct angular positions after the osteosynthesis for the proximal and distal portions of the bone so as to eliminate the angular deformations of the bone.

Abstract: A wrist brace provides a mounting point, a means to hold the hand in position relative to the apparatus, and spreads the force evenly over a large area. Positioned over the dorsal surface of the brace is a "U" shaped transverse member that is attached to the wrist brace through two swivel joints on the ulnar and radial sides of the brace. The pivot means are positioned such that a straight line drawn between them generally passes through the axes of rotation of the metacarpal phalangeal (MP) joints. Positioned dorsally above the proximal interphalangeal (PIP) joint are two members, one of which has an arc shaped tail for its dorsal surface. The other is a slider block which engages and slides around this first arc member. The arc member is mounted to the middle phalanx of the subject finger in such a way that the projected center of the arc would be coincident with the axis of rotation of the PIP Joint.

Abstract: A modular fixator assembly capable of allowing motion at the wrist during treatment of wrist fractures. The fixator assembly includes a distractor device, a pin outrigger attached to the distrator device, at least one pin for fixating the fracture fragments, and pin clamping assemblies for attaching the pin to the outrigger. The outrigger conforms to the anatomical configuration of the fractured bone thereby enabling direct fixation of the fracture fragments.

Abstract: An external fixator for adjustably securing a first bone portion in a position relative to a second bone portion. The fixator includes a first clamping assembly for receiving a first bone screw connected to the first bone portion and a second clamping assembly for receiving a second bone screw connected to the second bone portion. The first and second clamping assemblies are interconnected by a connection member. The external fixator also includes a drive unit for controlling angular adjustment of the second clamping assembly relative to the first clamping assembly.

Abstract: This invention is directed toward a hand fracture, burn and contraction treatment device that is capable of imparting the desired amount of long term force and moment to the interphalangeal and metacarpalphalangeal joints so as to effectively combat deformity due to burn scar or trauma, to prevent and/or correct contractures, and to reduce and immobilize fractures. The invention comprises two axial members slidably mounted within respective housings and joined by a spherical joint (with a slot to provide a selectable axis of increased range of motion). The invention permits movement of one axial member with respect to the other axial member in up to five degrees of freedom. The invention further provides for the adjustable mobilization of each axial member.

Abstract: A fixator for adjustably securing a first skeletal element on a superior side of an ankle joint relative to a skeletal element on the inferior side of the ankle joint. The fixator includes a bone screw clamping assembly that preferably secures a pair of screws to the bones of the foot. The bone screw clamping assembly is attached to a central body of the fixator and is operative for articulating the pair of bone screws about an axis substantially co-axial with the anatomical pivot axis of the ankle joint. The bone screw clamping assembly further defines a radiographic window for permitting lateral radiographic examination of the anatomical pivot axis of the ankle joint.

Abstract: A preferred embodiment of the invention provides an accessory device which is removably applicable to a double ball-jointed fixator, to assume the relation of a cage that effectively surrounds both ball-joints of the fixator. One longitudinal end of the accessory cage quickly mounts to one bone-screw mounting member of the fixator and establishes first intersecting orthogonally related articulation axes of a first half of a dual Cardan joint, wherein such first intersection is coincident with the ball center of a first ball-joint of the fixator; the other longitudinal end of the accessory cage quickly mounts to the other bone-screw mounting member of the fixator and establishes second intersecting orthogonally related articulation axes of a second half of the dual Cardan joint, with such second intersection coincident with the ball center of the second ball-joint of the fixator.

Abstract: There is described an external fixator for use in the treatment of a fractured bone having a first bone fragment and a second bone fragment which external fixator comprises:a first movable element and;a second movable element,wherein the first movable element is movably mounted in the fixator so as to be capable of angular motion in one plane, and the second movable element is movably mounted in the fixator so as to be capable of angular motion in another plane, with the plane in which the second element moves being substantially orthogonal to the plane in which the first element moves, and the first and second movable elements are coupled together in such a way as to allow simultaneous angular movement of the external fixator in the two substantially orthogonal planes.

Abstract: An anterior cruciate ligament or soft tissue tensioning and knee displacement measuring device and method for its use to apply a tensile stress into a repaired or replaced graft and to maintain tension on that graft while an interference screw, or like fastener, is turned into a tunnel section end, containing the graft or sutures connected to the graft, wedging it against the tunnel wall, and, during application of the tensile stress, for determining the distance that the knee is displaced. The invention includes a tensioning device having, as a body, a pair of straight rails with a cross member secured across the rails rear or distal ends with forward or proximal rail ends connected to mounting tubes that are for fitting into pins as have been mounted into to extend from a bone cortex, alongside the tunnel section end, and including a trolley maintained to travel between the body rails.

Abstract: A preferred embodiment of the invention provides an accessory device which is removably applicable to a double ball-jointed fixator, to assume the relation of a cage that effectively surrounds both ball-joints of the fixator. One longitudinal end of the accessory cage quickly mounts to one bone-screw mounting member of the fixator and establishes first intersecting orthogonally related articulation axes of a first half of a dual Cardan joint, wherein such first intersection is coincident with the ball center of a first ball-joint of the fixator; the other longitudinal end of the accessory cage quickly mounts to the other bone-screw mounting member of the fixator and establishes second intersecting orthogonally related articulation axes of a second half of the dual Cardan joint, with such second intersection coincident with the ball center of the second ball-joint of the fixator.

Abstract: The invention provides a fixator device for controlling the position of the femur relative to the pelvis during surgery, comprising a first curved rigid bar member having a pelvis anchor member disposed along its length for anchoring the bar member to the innominate bone of the pelvis, said bar member having a first end for anchoring to the upper pelvis and a second end for anchoring to the lower pelvis, and a second bar member attached at one end to the first bar member, and having a femur anchor member at its second end for anchoring to the base of the femur, to thereby control and fix the position of the femur relative to the pelvis during surgical operations.

Abstract: A device for dynamic external fixation of a distal fracture of the radius having a proximal leg fixed to the radius and a distal leg fixed to the metacarpal using fixation pins. The proximal and distal legs of the external fixator are connected by a hinge mechanism, which defines a range of flexion and extension of the wrist, and a track-track housing mechanism, which defines a range of radial and ulnar deviation of the wrist. The axis of movement of the hinge mechanism and the axis of movement of the track-track housing mechanism passes through the proximal pole of the capitate bone.

Abstract: The external fixation device for osteosynthesis is made up of first and second longitudinal bars (3,4) as carriers for fixation elements (5;10) to the bone (7), a three-dimensional shell (1) attached to the extremity of said first bar (4) and a gliding element (2) attached to the extremity of said second bar (3) having at least three gliding points on each side of said shell (1). The gliding element (2) can consists of a first disk (2A) gliding on one side of the shell (1) and a second disk (2B) gliding on the opposite side of the shell (1), both disks (2A,2B) being connected through a central hole (12) in the center of the shell (1) by a threaded extension (2C).The shell (1) and the gliding element (2) are movably arranged to each other in such a way that the free ends of the bars (3,4) are extending in opposite directions.The device enables motion of the wrist joint about all three axes, while keeping the center of rotation at one point during treatment of the fracture and thus preventing complications.