WO2006074954A1 - Procede pour determiner la position neutre d'un femur par rapport a un os iliaque et systeme pour mettre en oeuvre ce procede - Google Patents

Procede pour determiner la position neutre d'un femur par rapport a un os iliaque et systeme pour mettre en oeuvre ce procede Download PDF

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Publication number
WO2006074954A1
WO2006074954A1 PCT/EP2006/000299 EP2006000299W WO2006074954A1 WO 2006074954 A1 WO2006074954 A1 WO 2006074954A1 EP 2006000299 W EP2006000299 W EP 2006000299W WO 2006074954 A1 WO2006074954 A1 WO 2006074954A1
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WO
WIPO (PCT)
Prior art keywords
femur
relative
plane
pelvic
anterior
Prior art date
Application number
PCT/EP2006/000299
Other languages
German (de)
English (en)
Inventor
Benoit Mollard
Cyril Perot
Sergej Kammerzell
Original Assignee
Aesculap Ag & Co. Kg
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 Aesculap Ag & Co. Kg filed Critical Aesculap Ag & Co. Kg
Publication of WO2006074954A1 publication Critical patent/WO2006074954A1/fr

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Classifications

    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B34/00—Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
    • A61B34/20—Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
    • 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
    • A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
    • A61B5/1126—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb using a particular sensing technique
    • A61B5/1127—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb using a particular sensing technique using markers
    • 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
    • A61B5/4504—Bones
    • 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
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/36—Image-producing devices or illumination devices not otherwise provided for
    • 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
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B34/00—Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
    • A61B34/10—Computer-aided planning, simulation or modelling of surgical operations
    • A61B2034/101—Computer-aided simulation of surgical operations
    • A61B2034/102—Modelling of surgical devices, implants or prosthesis
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B34/00—Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
    • A61B34/10—Computer-aided planning, simulation or modelling of surgical operations
    • A61B2034/101—Computer-aided simulation of surgical operations
    • A61B2034/105—Modelling of the patient, e.g. for ligaments or bones
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B34/00—Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
    • A61B34/20—Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
    • A61B2034/2046—Tracking techniques
    • A61B2034/2055—Optical tracking systems
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B34/00—Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
    • A61B34/20—Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
    • A61B2034/2068—Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis using pointers, e.g. pointers having reference marks for determining coordinates of body points
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6846—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive
    • A61B5/6867—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive specially adapted to be attached or implanted in a specific body part
    • A61B5/6878—Bone
    • 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
    • A61F2/32—Joints for the hip
    • 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
    • A61F2/32—Joints for the hip
    • A61F2/34—Acetabular cups
    • 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
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • 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
    • A61F2002/4632—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor using computer-controlled surgery, e.g. robotic surgery
    • A61F2002/4633—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor using computer-controlled surgery, e.g. robotic surgery for selection of endoprosthetic joints or for pre-operative planning

Definitions

  • the invention relates to a method for determining the neutral position of a femur relative to a pelvic bone.
  • a femoral sagittal plane is determined from the position data of the hip joint center, the knee joint and the ankle in the angled lower leg.
  • the determination of the femoral sagittal plane is based on the finding that, when the lower leg is bent, the ankle is pivoted in the femoral sagittal plane, which in the neutral position of the thigh is actually perpendicular to the anterior pelvic plane and perpendicular to the connecting line of the two anterior superior iliac spines. It is beneficial to palpate the three pelvic bone points to determine the anterior pelvic plane.
  • the hip center can be determined by pivoting the femur relative to the hip joint. Assuming that the hip joint is a ball joint, all points of the thigh that are spaced apart from the hip joint center move on a ball cup around the center of the hip joint.
  • This ball socket can be determined by measurement, for example by means of a navigation system, and from this the ball center can be determined, which coincides with the hip joint center.
  • the position of the knee joint can preferably also be determined by palpation of the patella, and the position of the ankle can also be determined by palpation, for example by palpation of the two lateral ankle projections and / or bony prominences on the front of the lower leg.
  • the invention also relates to a device for carrying out this method, wherein at the pelvic bone and the femur in each case a marking element is set, these marking elements are in terms of their location, so in terms of position and orientation in space, monitored by a navigation system, so that at any moment the location of these marking elements in the room can be determined.
  • the marking elements are fixed to the pelvic bone and the thigh, there is a permanent relationship between the position data of the marking elements on the one hand and the position data of the above-described NEN marking points on the pelvic bone on the one hand and the mechanical femur axis and the sagittal plane on the thigh bone on the other hand, once this relationship is established, it remains the same and by determining the position of the marking can then calculate the respective location of said marker points, connecting lines and levels.
  • a button provided with a marking element is used to determine the marking points, the position of which is also monitored by the navigation system. This makes it possible in a simple manner, to capture the described marking points in terms of their location from the navigation system and to create a corresponding record.
  • FIG. 1 shows a schematic view of the pelvic bone, of the thigh bone and of the lower leg bone of a patient and of a navigation system with a data processing system for determining the position data of endogenous marking points and further geometric data;
  • Figure 2 is a view of the patient similar to the representation of Figure 1 with additional indication of the mechanical femur axis of the femur and
  • FIG. 3 shows a view of the pelvic bone, the thigh bone and the lower leg bone angled at 90 ° Patients indicating the anterior pelvic plane, the mechanical femoral axis and the femoral sagittal plane.
  • a navigation system 1 which emits infrared radiation through three mutually spaced transmitters 2, 3, 4, which impinges on reflector elements of marking elements 5, 6, 7 and from there on as recipients working transmitter 2, 3,4 is reflected back. From the transit time differences and the directions of the reflected radiation, the navigation system at any time determine the exact position and orientation, ie the location of each marking element 5, 6, 7 in space and generate a corresponding record, which are then fed to a data processing system 8 for further processing can.
  • the data processing system is assigned a display unit in the form of a screen 9.
  • Such navigation systems are known per se and can be deviating in a known manner, for example, instead of infrared radiation electromagnetic radiation or ultrasound radiation can be used etc. It is only essential that the navigation system can determine the location of the marking elements in the room at any time and can generate a record.
  • a first marking element 5 is firmly connected to a femur 10 of a patient, for example by means of a bone screw screwed into the bone, to which the marking element 5 is rigidly fastened.
  • the marker 6 is fixedly connected to the pelvic bone 11 of a patient, and finally the marker 7 is rigid with a Tastinstrument 12 connected, which has, for example, a needle-shaped stylus tip 13.
  • the data processing system 8 calculates a plane, which is referred to below as the anterior pelvic plane. This is arranged almost vertically in a standing patient and forms a reference plane for the pelvic bone.
  • the position of the hip joint center 17 is determined.
  • the thigh bone 10 is pivoted relative to the pelvic bone 11.
  • the marking element 5 moves on a spherical shell around the hip joint center point 17.
  • This spherical shell is measured by the navigation system, and the data processing system 8 can determine the position of the hip joint center 17 therefrom, relative to the femur 10, that is, to the marrow. kierelement 5, and relative to the pelvic bone 11, that is to the marking element. 6
  • the position of the knee joint is determined. Since this is not initially opened in the operation, this position is approximately determined by taking a certain point on the patella 18 and defines this as the knee center.
  • the data processing system 8 calculates from the position data of the hip joint center 17 and the knee joint a connecting line, which is referred to as a mechanical femur axis 19 (FIG. 2). Thus, the orientation of this mechanical femur axis relative to the femur 10 and thus against the marking element 5 is determined.
  • the lower leg of the patient is angled relative to the thigh by approximately 90 °, as shown in FIG.
  • the position of the ankle 20 is determined. This can also be done by palpation with the stylus 12, for example, the most prominent points of the two hocks of the foot or on the front of the leg a prominent bone point in the ankle is palpated and from these data, the position of the ankle is determined.
  • the data processing system 8 calculates a plane from the position data of the hip joint center 17, the knee joint and the ankle, this is referred to as femoral sagittal plane 21.
  • the geometric data of this Femursagittalebene 21 relative to the femur 10 are thus known, and thus also relative to the marking element. 5
  • the patient's leg will normally not be oriented relative to the pelvic bone, that is, it will not be in the neutral position.
  • the neutral position is characterized in that the mechanical femoral axis 19 is parallel to the anterior pelvic plane 22 and perpendicular to the connecting line 23 of the two iliac spine anteriores superiores and that the femoral axis 21 is perpendicular to the anterior pelvic plane 22.
  • This assumption is essentially true in most patients, so this description is a very good representation of the neutral position.
  • this position of the leg was not taken when taking the measurement, deviations arise, and these deviations can easily be calculated by the data processing system 8, that is, the coordinate transformations necessary to derive from the actually measured orientations of the femoral axis plane 21 and the mechanical femur axis 19 to reach the corresponding positions in the neutral position. From this transformation data can then also calculate the transformation data describing the transition of the position of the marking element 5 from the actual measurement position to the neutral position or the transition of an inserted into the femur and fixedly connected to this implant.
  • the position of this implant in the femur 10 is either mathematically simulated before the operation, it is said that a certain position of the implant in the femur, for example, using image data of the femur and image data of the implant part, which are copied one above the other, or receives one the position of the implant part after implantation in that also the implant part is navigated, for example by a temporarily rigidly connected to the implant part marking.
  • the data processing system 8 the position of the implant in the neutral position of the femur from the actual position of the implant, which can be determined at any time by determining the position of the thigh bone own marker 5, relative to the pelvic bone 11th

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

Abstract

L'invention concerne un procédé pour déterminer la position neutre d'un fémur par rapport à un os iliaque. Selon ce procédé, le plan pelvien antérieur est déterminé à partir des trois points suivants de l'os iliaque : 1) l'épine iliaque antéro-supérieure gauche, 2) l'épine iliaque antéro-supérieure droite, 3) le pubis. Un plan sagittal du fémur est déterminé à partir des données de position du centre de l'articulation de la hanche, de l'articulation du genou (100) et de l'articulation de la cheville lorsque la jambe inférieure est pliée. Les modifications angulaires nécessaires pour que la ligne de jonction entre le centre de l'articulation de la hanche et l'articulation du genou (axe mécanique du fémur) s'étende dans un plan parallèle au plan pelvien antérieur en passant par le centre de l'articulation de la hanche et perpendiculairement à la ligne de jonction entre les deux épines iliaques antéro-supérieures (150) sont calculées. Les modifications angulaires nécessaires pour que le plan sagittal du fémur soit orienté perpendiculairement au plan pelvien antérieur sont également calculées.
PCT/EP2006/000299 2005-01-17 2006-01-14 Procede pour determiner la position neutre d'un femur par rapport a un os iliaque et systeme pour mettre en oeuvre ce procede WO2006074954A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005003317.2 2005-01-17
DE102005003317A DE102005003317A1 (de) 2005-01-17 2005-01-17 Verfahren zur Bestimmung der neutralen Position eines Oberschenkelknochens relativ zu einem Beckenknochen und Vorrichtung zur Durchführung dieses Verfahrens

Publications (1)

Publication Number Publication Date
WO2006074954A1 true WO2006074954A1 (fr) 2006-07-20

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DE (1) DE102005003317A1 (fr)
WO (1) WO2006074954A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012108151A1 (de) 2012-09-03 2014-03-06 Aesculap Ag Verfahren und Vorrichtung zur Bestimmung der Längenänderung und der Änderung des Versatzes eines Femurs sowie Computerprogrammprodukt und Computerprogramm

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Publication number Priority date Publication date Assignee Title
DE102007049668B3 (de) 2007-10-17 2009-04-16 Aesculap Ag Verfahren und Vorrichtung zur Bestimmung der Winkellage einer Hüftgelenkpfanne in einem Beckenknochen
DE102007049671A1 (de) 2007-10-17 2009-04-30 Aesculap Ag Verfahren und Vorrichtung zur Bestimmung der Frontalebene des Beckenknochens
DE102009037208B3 (de) * 2009-08-12 2011-06-01 Aesculap Ag Verfahren und Vorrichtung zur Bestimmung der Lage einer Tangentialebene an drei Extrempunkten eines Körpers
DE202010000546U1 (de) 2010-04-09 2010-06-10 Aesculap Ag Vorrichtung zum Bestimmen einer Referenzebene des menschlichen Beckens
DE102010016386A1 (de) * 2010-04-09 2011-10-13 Aesculap Ag Nichtinvasives Verfahren und Vorrichtung zum Bestimmen einer Referenzebene des menschlichen Beckens

Citations (3)

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Publication number Priority date Publication date Assignee Title
DE10306793A1 (de) * 2002-05-21 2003-12-04 Plus Endoprothetik Ag Rotkreuz Anordnung und Verfahren zur intraoperativen Festlegung der Lage eines Gelenkersatzimplantats
EP1402855A1 (fr) * 2002-09-24 2004-03-31 BrainLAB AG Appareil et méthode pour déterminer le débattement d'une articulation
US20040230199A1 (en) * 2002-10-04 2004-11-18 Jansen Herbert Andre Computer-assisted hip replacement surgery

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US6711431B2 (en) * 2002-02-13 2004-03-23 Kinamed, Inc. Non-imaging, computer assisted navigation system for hip replacement surgery
KR100533321B1 (ko) * 2003-04-21 2005-12-05 한국과학기술원 골반정합을 위한 ｔ형 게이지장치
ES2302984T3 (es) * 2003-09-27 2008-08-01 AESCULAP AG & CO. KG Procedimiento y dispositivo para determinar la movilidad de una protesis de articulacion de cadera.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10306793A1 (de) * 2002-05-21 2003-12-04 Plus Endoprothetik Ag Rotkreuz Anordnung und Verfahren zur intraoperativen Festlegung der Lage eines Gelenkersatzimplantats
EP1402855A1 (fr) * 2002-09-24 2004-03-31 BrainLAB AG Appareil et méthode pour déterminer le débattement d'une articulation
US20040230199A1 (en) * 2002-10-04 2004-11-18 Jansen Herbert Andre Computer-assisted hip replacement surgery

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012108151A1 (de) 2012-09-03 2014-03-06 Aesculap Ag Verfahren und Vorrichtung zur Bestimmung der Längenänderung und der Änderung des Versatzes eines Femurs sowie Computerprogrammprodukt und Computerprogramm

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