FR2684287A1 - Device for controlling the positioning of the lower limb during an arthroplasty of the hip - Google Patents

Device for controlling the positioning of the lower limb during an arthroplasty of the hip Download PDF

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Publication number
FR2684287A1
FR2684287A1 FR9115115A FR9115115A FR2684287A1 FR 2684287 A1 FR2684287 A1 FR 2684287A1 FR 9115115 A FR9115115 A FR 9115115A FR 9115115 A FR9115115 A FR 9115115A FR 2684287 A1 FR2684287 A1 FR 2684287A1
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Prior art keywords
pelvis
arthroplasty
hip
femur
sleeve
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FR9115115A
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French (fr)
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FR2684287B3 (en
Inventor
Chagneau Francis
Levasseur Michel
Rolland Jean-Jacques
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Priority to FR9115115A priority Critical patent/FR2684287B3/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/45—For evaluating or diagnosing the musculoskeletal system or teeth
    • A61B5/4528—Joints
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
    • A61B5/107—Measuring physical dimensions, e.g. size of the entire body or parts thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2/4657—Measuring instruments used for implanting artificial joints
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2/4657—Measuring instruments used for implanting artificial joints
    • A61F2002/4658—Measuring instruments used for implanting artificial joints for measuring dimensions, e.g. length

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Veterinary Medicine (AREA)
  • General Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Public Health (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Biophysics (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Dentistry (AREA)
  • Pathology (AREA)
  • Physics & Mathematics (AREA)
  • Transplantation (AREA)
  • Molecular Biology (AREA)
  • Medical Informatics (AREA)
  • Vascular Medicine (AREA)
  • Rheumatology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Cardiology (AREA)
  • Surgical Instruments (AREA)
  • Prostheses (AREA)

Abstract

The invention relates to a surgical device making it possible to control, during an arthroplasty of the hip, the relative positioning of the femur with respect to the pelvis. The device consists of a T-shaped bar (1) solidly attached to the pelvis using pins (8) or screws (9) clamped between the two short branches (5) (7) of the T, or using one screw passing through a longitudinal channel (2). The T-shaped bar supports cursors (3) (11) sliding along graduations (4).

Description

La présente invention concerne un dispositif chirurgical pour contrôler, au cours d'une intervention, le positionnement relatif du fémur par rapport au bassin, lors d'une arthroplastie de la hanche. The present invention relates to a surgical device for controlling, during an intervention, the relative positioning of the femur relative to the pelvis, during a hip arthroplasty.

La géométrie de la partie supérieure du fémur diffère beaucoup d'un individu à un autre, tant par les dimensions des éléments comme la tête ou le col du fémur, que par les angles que font ces éléments entre eux ou avec la diaphyse fémorale. The geometry of the upper part of the femur differs greatly from one individual to another, as much by the dimensions of the elements as the head or the neck of the femur, as by the angles that these elements make with each other or with the femoral shaft.

L'usure de la tête fémorale dans la cavité cotyloidienne peut entraîner une dissymetrie des deux hanches qu'il est possible de rétablir au moment de l'arthroplastie. Wear of the femoral head in the acetabulum can cause asymmetry in both hips, which can be restored at the time of the joint replacement.

En conséquence, l'arthroplastie de la hanche nécessite, avant l'ablation des parties osseuses, une étude géométrique du positionnement dans l'espace du fémur par rapport au bassin. Consequently, hip arthroplasty requires, before the removal of the bony parts, a geometric study of the positioning in space of the femur relative to the pelvis.

De façon à remplacer, d'une manière aussi géométriquement parfaite que possible, la partie supérieure du fémur, les prothèses offrent toujours au praticien un choix modulaire de plusieurs longueurs de col et parfois plusieurs positions du col par rapport à la collerette d'appui. In order to replace, in as geometrically perfect a manner as possible, the upper part of the femur, the prostheses always offer the practitioner a modular choice of several neck lengths and sometimes several positions of the neck relative to the support flange.

Ce choix est actuellement effectué préalablement à l'intervention à partir de clichés radiologiques. This choice is currently made prior to the intervention from radiological images.

Cependant, la détermination des longueurs réelles à partir de ces mesures radiographiques est délicate et une erreur est donc toujours possible, sans qu'il existe actuellement d'ancillaire susceptible de vérifier au cours de l'intervention si, par exemple, la latéralisation du fémur par rapport au bassin est satisfaisante.However, determining the actual lengths from these radiographic measurements is delicate and an error is therefore always possible, without there currently being any ancillary device capable of verifying during the intervention if, for example, the lateralization of the femur relative to the pelvis is satisfactory.

Cette erreur ne deviendra évidente que lorsque le patient reprendra la marche : une claudication et des douleurs musculaires constituant le triste résultat d'une erreur géométrique. This error will only become evident when the patient resumes walking: claudication and muscle pain constituting the sad result of a geometric error.

Le dispositif décrit dans la présente invention est destiné à éviter cette erreur géométrique, en contrôlant au cours de l'intervention que certains positionnements anatomiques comme la latéralisation, ou la longueur du membre, sont bien conformes au souhait du chirurgien. The device described in the present invention is intended to avoid this geometric error, by checking during the intervention that certain anatomical positions such as lateralization, or the length of the limb, are indeed in accordance with the wishes of the surgeon.

En cas d'anomalie, il est alors encore possible de choisir parmi les éléments modulaires offerts au praticien, celui qui va convenir le mieux. Après quoi, l'intervention peut se conclure au mieux des intérêts du patient. In the event of an anomaly, it is then still possible to choose from among the modular elements offered to the practitioner, the one that will best suit. After which, the intervention can be concluded in the best interests of the patient.

Le dispositif selon l'invention permet de repérer, dans un référentiel fixe, une poutre démontable liée au bassin, les positions de certains points ou directions anatomiques, appartenant à l'extrémité supérieure du fémur, comme un point du grand trochanter par exemple. The device according to the invention makes it possible to locate, in a fixed reference frame, a removable beam linked to the pelvis, the positions of certain anatomical points or directions, belonging to the upper end of the femur, such as a point of the greater trochanter for example.

D'autres caractéristiques et avantages de l'invention apparaîtront de la description et des dessins annexes, qui présentent un mode de réalisation préférentiel de l'invention. Other characteristics and advantages of the invention will appear from the description and the accompanying drawings, which show a preferred embodiment of the invention.

La figure 1 représente en perspective le dispositif selon l'invention. Figure 1 shows in perspective the device according to the invention.

La figure 2 représente une variante du dispositif précédent où la liaison du dispositif au bassin est assurée par une seule vis. Figure 2 shows a variant of the previous device where the connection of the device to the pelvis is provided by a single screw.

En référence à la figure 1, le dispositif comporte une poutre prismatique en T (1), percée longitudinalement (2), destinée à recevoir un index (3) coulissant le long d'une graduation (4) inscrite sur la grande longueur du T qui comporte à la jonction avec sa branche courte (5) une tige filetée (6) destinée à permettre la fixation, au moyen d'un écrou par exemple, d'une poutre (7) parallèle à la branche courte qui vient pincer des broches (8) ou des vis (9) préalablement fixées dans le bassin et chemisées ou non par un manchon (10). Referring to Figure 1, the device comprises a prismatic T-beam (1), pierced longitudinally (2), intended to receive an index (3) sliding along a graduation (4) inscribed on the long length of the T which comprises at the junction with its short branch (5) a threaded rod (6) intended to allow the fixing, by means of a nut for example, of a beam (7) parallel to the short branch which pinches pins (8) or screws (9) previously fixed in the basin and jacketed or not by a sleeve (10).

Le dispositif constitue alors avec sa poutre graduée, un référentiel rigide fixé, en porte à faux, au bassin, aisément montable ou démontable. The device then constitutes with its graduated beam, a rigid reference frame fixed, cantilevered, to the basin, easily mountable or dismountable.

La figure 1 montre aussi comment le dispositif, relié au bassin, permet de déterminer les coordonnées XAet d'un point A par exemple. FIG. 1 also shows how the device, connected to the basin, makes it possible to determine the coordinates XA and of a point A for example.

La description du montage du dispositif permettra de mettre en évidence l'originalité et la qualité du dispositif selon une réalisation préférentielle mais non limitative. The description of the assembly of the device will make it possible to highlight the originality and the quality of the device according to a preferential but not limiting embodiment.

Après avoir accompli les gestes préparatoires à une arthroplastie de la hanche, le chirurgien commence par fixer deux broches chirurgicales telles que (8) de 3 mm de diamètre par exemple. Cette fixation a nécessité la traversée de la masse musculaire située au dessus du sourcil cotyloïdien.  After performing the preparatory gestures for a hip replacement, the surgeon begins by attaching two surgical pins such as (8) 3 mm in diameter for example. This fixation required the crossing of the muscle mass located above the acetabular eyebrow.

Le long d'une des broches, le praticien fait glisser un manchon (10) de diamètre intérieur légèrement supérieur à 3,5 mm à travers la masse musculaire jusqu'au contact du bassin. Along one of the pins, the practitioner slides a sleeve (10) with an internal diameter slightly greater than 3.5 mm through the muscle mass until it contacts the pelvis.

Le chirurgien peut alors retirer la broche en laissant le manchon et la remplacer par une vis (9) de diamètre 3,5 mm qui va plaquer l'extrémité distale du manchon sur le bassin. A ce stade du montage, la broche (8) et la vis (9) font saillie de quelques millimètres de la masse musculaire mais ne perturbent pas la liberté de mouvement autour de l'extrémité supérieure du fémur. The surgeon can then remove the pin leaving the sleeve and replace it with a screw (9) with a diameter of 3.5 mm which will press the distal end of the sleeve on the pelvis. At this stage of assembly, the pin (8) and the screw (9) protrude a few millimeters from the muscle mass but do not disturb the freedom of movement around the upper end of the femur.

Le chirurgien peut alors solidariser au bassin la poutre en T, en coinçant les extrémités proximales de la vis (9) et de la broche (8) entre les deux ailes parallèles de la branche courte (5) du T. La vis (6) assure ce pincement. The surgeon can then secure the T-beam to the pelvis, wedging the proximal ends of the screw (9) and the pin (8) between the two parallel wings of the short branch (5) of the T. The screw (6) ensures this pinching.

Le chirurgien peut donc maintenant se servir du dispositif pour mesurer les coordonnées du point A de la figure 2 par exemple, avant de procéder au démontage de la poutre (1) par dévissage de (6) puis à l'arthroplastie proprement dite. The surgeon can therefore now use the device to measure the coordinates of point A in FIG. 2 for example, before dismantling the beam (1) by unscrewing from (6) and then by the arthroplasty itself.

Après la pose de la prothèse, le chirurgien peut à nouveau fixer le dispositif sur la vis (9) et la broche (8), qui sont restées en attente sans gêner l'opération1 et vérifier que le nouveau positionnement du point A correspond à ses voeux. After placing the prosthesis, the surgeon can again fix the device on the screw (9) and the spindle (8), which have remained on hold without interfering with the operation1 and check that the new positioning of point A corresponds to its wishes.

Il reste, soit à modifier la géométriede la prothèse, soit à démonter le dispositif et terminer l'intervention si le nouveau positionnement est satisfaisant. It remains either to modify the geometry of the prosthesis, or to dismantle the device and complete the intervention if the new positioning is satisfactory.

On peut remarquer qu'il serait possible de solidariser le dispositif au moyen d'une vis traversant longitudinalement (2) la poutre, vis qui traverserait la masse musculaire dans un manchon posé comme cela a été décrit plus haut pour la vis (9). La pose du dispositif est plus rapide et sa stabilité suffisante dans bien des cas. It can be noted that it would be possible to secure the device by means of a screw passing longitudinally (2) the beam, a screw which would pass through the muscle mass in a sleeve placed as described above for the screw (9). The installation of the device is faster and its stability sufficient in many cases.

La figure 2 représente une variante de cette dernière version du dispositif. Elle consiste à rendre solidaire un manchon (12) et la poutre en T. Ceci implique le remplacement de la vis par une broche entre les deux séries de mesures.  Figure 2 shows a variant of this latest version of the device. It consists in joining a sleeve (12) and the T-beam. This involves replacing the screw with a pin between the two series of measurements.

Claims (4)

REVENDICATIONS 1) Dispositif chirurgical pour contrôler le positionnement1) Surgical device to control positioning relatif du fémur par rapport au bassin caractérisé en relative of the femur in relation to the pelvis characterized in ce qu'il comporte une poutre en T (1) percée what it has a pierced T-beam (1) longitudinalement (2) destinée à recevoir un index (3) longitudinally (2) intended to receive an index (3) coulissant le long d'une graduation (4) inscrite sur la sliding along a graduation (4) inscribed on the grande branche du T qui comporte, à la jonction avec sa large branch of the T which comprises, at the junction with its branche courte (5), une tige filetée (6) destinée à short branch (5), a threaded rod (6) intended for permettre la fixation d'une poutre (7), parallèle à la allow the fixing of a beam (7), parallel to the branche courte (5), qui vient pincer des broches (8) ou short branch (5), which pinches pins (8) or vis (9) fixées préalablement dans le bassin et screws (9) previously fixed in the basin and chemisées ou non par un manchon (10) whether or not lined with a sleeve (10) 2) Dispositif selon la revendication 1 caractérisé en ce2) Device according to claim 1 characterized in that que la liaison de la poutre (1) avec le bassin est that the connection of the beam (1) with the pelvis is assurée par une vis ou une broche passant par le canal secured by a screw or spindle passing through the channel longitudinal (2).  longitudinal (2). 3) Dispositif selon les revendications 1 ou 2 caractérisé3) Device according to claims 1 or 2 characterized en ce que l'index (3) comporte une règle graduée in that the index (3) includes a graduated ruler coulissante (11) permettant de repérer un point dans sliding (11) allowing to locate a point in une direction orthogonale ou parallèle à la première an orthogonal or parallel direction to the first mesure (4). measure (4). 4) Dispositif selon l'une des revendications 1 à 34) Device according to one of claims 1 to 3 caractérisé en ce que le manchon (12) prolongeant le characterized in that the sleeve (12) extending the canal longitudinal (2) est solidaire de la poutre (1).  longitudinal channel (2) is integral with the beam (1).
FR9115115A 1991-12-03 1991-12-03 DEVICE FOR CONTROLLING THE POSITIONING OF THE LOWER LIMB DURING HIP ARTHROPLASTY. Expired - Fee Related FR2684287B3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9115115A FR2684287B3 (en) 1991-12-03 1991-12-03 DEVICE FOR CONTROLLING THE POSITIONING OF THE LOWER LIMB DURING HIP ARTHROPLASTY.

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FR9115115A FR2684287B3 (en) 1991-12-03 1991-12-03 DEVICE FOR CONTROLLING THE POSITIONING OF THE LOWER LIMB DURING HIP ARTHROPLASTY.

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FR2684287A1 true FR2684287A1 (en) 1993-06-04
FR2684287B3 FR2684287B3 (en) 1994-03-11

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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994012109A1 (en) * 1992-11-26 1994-06-09 Gustaf Gadelius Means to safely determine the mutual positions of a femur and an ilium in hip surgery
US5700268A (en) * 1997-01-06 1997-12-23 Zimmer, Inc. Device for measuring leg length and off-set for a total hip replacement
EP0957841A1 (en) * 1995-06-07 1999-11-24 Bentwood Place, Inc. Hip offset-inset apparatus and method
WO2004034904A1 (en) * 2002-10-21 2004-04-29 Poul Torben Nielsen Measuring equipment for use in connection with hip prosthesis surgery
EP1430859A1 (en) * 2002-12-20 2004-06-23 Depuy Products, Inc. Adjustable biomechanical measuring instrument
WO2005055838A1 (en) * 2003-12-12 2005-06-23 Gursharan Singh Chana Improved targeting device
US7022141B2 (en) 2002-12-20 2006-04-04 Depuy Products, Inc. Alignment device for modular implants and method
US7235106B2 (en) 2002-12-20 2007-06-26 Depuy Products, Inc. Modular hip stems and associated method of trialing
WO2010063117A1 (en) * 2008-12-02 2010-06-10 Andre Novomir Hladio Method and system for aligning a prosthesis during surgery using active sensors
US7854737B2 (en) 2002-12-20 2010-12-21 Depuy Products, Inc. Instrument and associated method of trailing for modular hip stems
FR2948550A1 (en) * 2009-07-29 2011-02-04 Denis Pichon Device for measuring distance, has support tube formed in sliding part of guide pin and equipped with positioning plate, ruler equipped with slider that is fitted with needle for locating in center of femur head
US9168153B2 (en) 2011-06-16 2015-10-27 Smith & Nephew, Inc. Surgical alignment using references
US9247998B2 (en) 2013-03-15 2016-02-02 Intellijoint Surgical Inc. System and method for intra-operative leg position measurement
US9314188B2 (en) 2012-04-12 2016-04-19 Intellijoint Surgical Inc. Computer-assisted joint replacement surgery and navigation systems
US10117748B2 (en) 2010-12-17 2018-11-06 Intellijoint Surgical Inc. Method and system for aligning a prosthesis during surgery
WO2018220140A1 (en) 2017-05-31 2018-12-06 Medichanical Engineering Aps Measuring equipment for use in connection with hip prosthesis surgery

Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5616147A (en) * 1992-11-26 1997-04-01 Meduse Scandinavia Ab Means to safely determine the mutual positions of a femur and an ilium in hip surgery
WO1994012109A1 (en) * 1992-11-26 1994-06-09 Gustaf Gadelius Means to safely determine the mutual positions of a femur and an ilium in hip surgery
EP0957841A1 (en) * 1995-06-07 1999-11-24 Bentwood Place, Inc. Hip offset-inset apparatus and method
EP0957841A4 (en) * 1995-06-07 2002-05-22 Bentwood Place Inc Hip offset-inset apparatus and method
US5700268A (en) * 1997-01-06 1997-12-23 Zimmer, Inc. Device for measuring leg length and off-set for a total hip replacement
US7331965B2 (en) 2002-10-21 2008-02-19 Poul Torben Nielsen Measuring equipment for use in connection with hip prosthesis surgery
WO2004034904A1 (en) * 2002-10-21 2004-04-29 Poul Torben Nielsen Measuring equipment for use in connection with hip prosthesis surgery
EP1430859A1 (en) * 2002-12-20 2004-06-23 Depuy Products, Inc. Adjustable biomechanical measuring instrument
US7022141B2 (en) 2002-12-20 2006-04-04 Depuy Products, Inc. Alignment device for modular implants and method
US7235106B2 (en) 2002-12-20 2007-06-26 Depuy Products, Inc. Modular hip stems and associated method of trialing
US8529578B2 (en) 2002-12-20 2013-09-10 DePuy Synthes Products, LLC Instrument and associated method of trialing for modular hip stems
US7854737B2 (en) 2002-12-20 2010-12-21 Depuy Products, Inc. Instrument and associated method of trailing for modular hip stems
WO2005055838A1 (en) * 2003-12-12 2005-06-23 Gursharan Singh Chana Improved targeting device
AU2004296595B2 (en) * 2003-12-12 2010-07-08 Chana, Gursharan Singh Improved targeting device
US8588892B2 (en) 2008-12-02 2013-11-19 Avenir Medical Inc. Method and system for aligning a prosthesis during surgery using active sensors
US10932921B2 (en) 2008-12-02 2021-03-02 Intellijoint Surgical Inc. Method and system for aligning a prosthesis during surgery using active sensors
WO2010063117A1 (en) * 2008-12-02 2010-06-10 Andre Novomir Hladio Method and system for aligning a prosthesis during surgery using active sensors
US10441435B2 (en) 2008-12-02 2019-10-15 Intellijoint Surgical Inc. Method and system for aligning a prosthesis during surgery using active sensors
US10682242B2 (en) 2008-12-02 2020-06-16 Intellijoint Surgical Inc. Method and system for aligning a prosthesis during surgery using active sensors
FR2948550A1 (en) * 2009-07-29 2011-02-04 Denis Pichon Device for measuring distance, has support tube formed in sliding part of guide pin and equipped with positioning plate, ruler equipped with slider that is fitted with needle for locating in center of femur head
US11865008B2 (en) 2010-12-17 2024-01-09 Intellijoint Surgical Inc. Method and system for determining a relative position of a tool
US10117748B2 (en) 2010-12-17 2018-11-06 Intellijoint Surgical Inc. Method and system for aligning a prosthesis during surgery
US11229520B2 (en) 2010-12-17 2022-01-25 Intellijoint Surgical Inc. Method and system for aligning a prosthesis during surgery
US9168153B2 (en) 2011-06-16 2015-10-27 Smith & Nephew, Inc. Surgical alignment using references
US11103363B2 (en) 2011-06-16 2021-08-31 Smith & Nephew, Inc. Surgical alignment using references
US9314188B2 (en) 2012-04-12 2016-04-19 Intellijoint Surgical Inc. Computer-assisted joint replacement surgery and navigation systems
US9655749B2 (en) 2013-03-15 2017-05-23 Intelligent Surgical Inc. Sterile optical sensor system having an adjustment mechanism
US10881468B2 (en) 2013-03-15 2021-01-05 Intellijoint Surgical Inc. Systems and methods to compute a subluxation between two bones
US10194996B2 (en) 2013-03-15 2019-02-05 Intellijoint Surgical Inc. Systems and methods to compute a positional change between two bones
US11589930B2 (en) 2013-03-15 2023-02-28 Intellijoint Surgical Inc. Systems and methods to compute a subluxation between two bones
US11826113B2 (en) 2013-03-15 2023-11-28 Intellijoint Surgical Inc. Systems and methods to compute a subluxation between two bones
US11839436B2 (en) 2013-03-15 2023-12-12 Intellijoint Surgical Inc. Methods and kit for a navigated procedure
US9247998B2 (en) 2013-03-15 2016-02-02 Intellijoint Surgical Inc. System and method for intra-operative leg position measurement
WO2018220140A1 (en) 2017-05-31 2018-12-06 Medichanical Engineering Aps Measuring equipment for use in connection with hip prosthesis surgery
US11439518B2 (en) 2017-05-31 2022-09-13 Medichanical Engineering Aps Measuring equipment for use in connection with hip prosthesis surgery

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