Method of early diagnostics of pes valgus deformation of feet in children
SUBSTANCE: registration of biomechanical characteristics of the ankle joint work is performed by means of a hardware-software complex in the process of a step cycle with the application of a motion capture system, a dynamic stabiloplatform and electromyography (EMG). First, light-reflecting markers are fixed on the patient's body, devices of wireless EMG are fixed on anterior and posterior groups of the shin muscles. An individual three-dimensional static skeleton model of the patient, for which characteristics of the step cycle are determined by the patient walking on the stabilometric platform with the number of not fewer than 5 repetitions, is created by means of the motion capture system. The obtained biomechanical characteristics are used to calculate the power of the ankle joint work, the pronation angle and the supination angle by means of the complex software. Comparative analysis of the said parameters with the parameters of the norm, varying in the following ranges: power of work 3.01÷4.56 W/kg, pronation angle 3.89÷4.78 degrees, supination angle 2.98÷3.67 degrees, is carried out. Pes valgus deformation of feet is diagnosed if the power of the ankle joint work and the supination angle reduce, and the pronation angle increases in comparison with the norm.
EFFECT: method provides the complex accurate quantitative early diagnostics of pes valgus deformation of the foot in children in short terms, taking into account the biomechanics of walking.
The invention relates to the field of medicine, namely to orthopedics, and can be used to identify the characteristics of gait inherent in the early stages for the talipes valgus in children.
The problem of early diagnosis of flatfoot in children today is quite relevant. Existing in this section of orthopedics diagnostic methods allow for a different degree of accuracy to detect only clinically expressed forms of flatfoot. Control of gait is performed by a podiatrist during routine inspection at the age of three and is visual only. Visual inspection allows to detect only advanced pathology and give a rough estimation of its extent. These same disadvantages suffers a method of photographing stop . Method of odometry (measurement of height and length of the foot, the calculation photometrische index)  allows accurate diagnosis only in cases of anatomically overt signs of flatfoot. The disadvantage of x-ray method  is radiation exposure. If planography (determination of the bearing surface of the foot print on the paper)  results in 30-40% do not coincide with the clinical diagnosis due to the high vulnerability of the methodology and fuzziness of plantogram. Pedobarography (pressure measurement stop bearing at rest and when p�slichnih kinds of loads with subsequent computer processing of the results)  is a means of assessing the efficiency of full-contact insoles patients with flat feet, does not allow to assess the condition of the subtalar joint and muscle activity of the lower leg. Computer and optical diagnostics  (method of registration of the camcorder status of the lower extremities or reflected by a mirror image of the plantar surface of the foot from further processing of the received data on the computer) does not allow to analyze the work of the ankle joint in the dynamics.
The closest adopted for the prototype, is the method of pedobarography. However, it cannot be used to diagnose early stages of flatfoot, as it will not record the kinetic, kinematic characteristics of the ankle joint and the state of activity of the leg muscles, and also change the settings of the stepping cycle.
For any initial stages of deformation of the foot suffers the mechanics of the subtalar joint. The maximum load on the subtalar joint account at the time of the step cycle in the stance phase, when the foot is maximally spread and planiruetsya under the weight of the body. Therefore, it is necessary to investigate the work of the subtalar joint is in the process of walking, and not in a static position.
Normally, in the process of rolling of the foot, the subtalar joint forms an angle of 4 degrees in the frontal plane, alternately in the lateral and medial sides. When flat�algunos deformation increases this angle. In the initial stage of deformation are included compensatory mechanisms to correct the situation - the increase in the workload of the muscular system responsible for movement in the ankle joint, and, as a consequence, the increase in the workload of the joint. Point pressure weight when rolling of the foot is in a walking cycle forms a normal physiological trajectory that runs from the heel to the toe. If any violations of the biomechanics of the ankle joint this trajectory changes even in the absence of external signs of pathology.
A task that allows to solve the present invention is the diagnosis for the talipes valgus in children at early stages.
To solve this problem during routine inspection of children are encouraged to use the motion-capture system (Motion Capture), for the registration of the biomechanical performance of the ankle joint in the process of the step cycle by means of infrared cameras, dynamic stabilometry and electromyography to calculate in a short time quantitative characteristics of the ankle joint, namely
- the angle of rotation of the subtalar joint in the frontal plane in the reference period of the stepping cycle;
- the power output of the subtalar joint;
- the workload of the muscles, correcting the initial pathology in the joint;
trajectory t�chki pressure of body weight on the foot during the stance phase of the step cycle, as well as identifying the nature of these violations and, as a consequence, disturbances of gait.
The proposed method consists of the following sequence of actions:
1. The fixing of retro-reflective markers on the patient's body;
2. Fixation 4 devices for wireless electromyography of the lower extremity of the patient;
3. Calibration of a motion capture system;
4. The static entry models of the patient to create an individual skeletal model;
5. The implementation of the patient pass through the stabilometric platform (at least 5 repetitions);
6. Calculation using specialized software characteristics of the stepping cycle, the power output of the ankle joint; EMG of the muscles of the lower leg; the trajectory of the centre of pressure in a walking cycle; reaction force in support of the stepping cycle;
7. Comparative analysis of the obtained values with the parameters of normal, varied in the following ranges: the power of work - 3.01÷4.56 W/kg, the angle of pronation - 3.89÷4.78 degrees, the angle of supination - 2.98÷3.67 degrees for diagnosis for the talipes valgus.
The present invention is as follows: on the lower limb of the patient in a certain order are fixed retro-reflective markers (18 markers for the two limbs). Using 10 infrared and 2 video cameras data transmission�tsya to the control device and stored in a memory of the hardware-software complex, who with the help of specialized software builds individual three-dimensional model of the patient. To receive data from the computer at the anterior and posterior group of muscles of the lower leg is fixed wireless instrument for electromyography (minimum 4 pieces). Calibrated the system and the construction of three-dimensional skeletal model. After that the patient is on certain sections stabilometric platform (at least 5 times). Hardware transmits the received data for processing using specialized software to calculate key indicators and their analysis for the purpose of diagnosing ploskovalgusnaya deformation. The results of measurements and analyses are stored in the memory of the hardware-software complex and can be output in the form of a research report.
An example of a specific embodiment of the invention.
Example 1. The patient Alexey V. 14.07.2004 year of birth. The study of gait using motion capture system described method.
The research report: date of study 16.05.2013 G. the Capacity of the ankle joints was 1.79-2,33 W/kg, the angle of pronation 5.86, the angle of supination 1.12. Observed medial displacement of the trajectory of the point of pressure during the stance phase, increasing muscle activity goal�and, increasing the base of the stepping cycle. Diagnosis: Initial signs of ploskovalgusnaya deformity of both feet.
The diagnosis was subsequently confirmed by an orthopedic surgeon.
Example 2. The Patient Rodion A. 10.11. 2003 year of birth. The study of gait using motion capture system described method.
The research report: date of study 18.05.2013 G. the Capacity of ankle joints amounted to 3.22-4,23 W/kg, the angle of pronation 4,12, supination angle 3.12. Which corresponds to the parameters of normal, varied in the following ranges: the power of work 3,01-to 4.56 W/kg, the angle of pronation 3,89-4,78, the angle of supination 2,98-3,67. Diagnosis: Initial signs of flat feet is not identified.
The diagnosis was subsequently confirmed by an orthopedic surgeon.
Thus, the proposed diagnostic method allows to identify abnormalities of motor function and biomechanics of the ankle joint, inherent in the early stages for the talipes valgus in children, get them quantitative indicators and a comprehensive evaluation.
The list of references
1. Andreev P. S., Ryabchikov I. V. Digital computer photoplesmography in the practice of the doctor traumatologist-orthopedist. The First International. Conf. in surgery of the foot and ankle in Moscow. The book of abstracts (Moscow, 31.03-01.04 2006). M.; 2006. 10.
2. Under. Mayu B. V. Petrovsky Podometre. Pain�Aya medical encyclopedia. Publisher: Soviet encyclopedia, 1974.
3. Solomin, V., Ignatyev Yu. T., Fedotov V. K. Optoelectronic diagnostics as one of the methods of radiological imaging. Nevsky radiological forum "New horizons" (7-10 APR. 2007). SPb.: Albiceps.; 2007. 746.
4. Jawlensky O. N., Lisitsyn M. P., Neverkovich A. S. Computer planography in the treatment of pathologies of the feet. The First International. Conf. in surgery of the foot and ankle in Moscow. The book of abstracts (Moscow, 31.03-01.04 2006). M.; 2006. 111.4.
5. Gorokhov, S., Udovichenko O. V., Galstyan G. R. In-Shoe computed pedobarography as a new method of evaluating the effectiveness of orthopedic shoes in patients with diabetes mellitus. Diabetes 2009, No. 4.
6. Solomin, V., Fedotov V. K., Ignatyev Yu. T., Vyacheslav Solomin.Yu. Computer optical topography ka method of radiodiagnosis static deformities of the feet in children. Traumatology and orthopedics of the XXI century. The book of abstracts of the VIII Congress of traumatologists and orthopedists Russia: In 2 V. (Samara, 6-8 June 2006). Samara: Etching, Samara state medical University, 2006; II. 977-978.
Method of early diagnostics for the talipes valgus in children, including the use of hardware-software complex, which carry out registration of the biomechanical characteristics of the ankle joint in the process of step cycle with the use of a motion capture system, d�of namic stabilometry and electromyography (EMG), what is initially on the patient's body is fixed with reflective markers on the anterior and posterior group of muscles of the tibia is fixed in the device for a wireless EMG, using a motion capture system to create individual three-dimensional static skeletal model of the patient, which defines the characteristics of the stepping cycle by passage of a patient by stabilometric platform in the amount of not less than 5 reps, on the basis of biomechanical characteristics using the software calculate the complex power of the ankle joint, the angle of pronation and supination angle and conduct comparative analysis of these parameters with the parameters of normal, varied in the following ranges: the power of work 3,01÷4,56 W/kg, the pronation angle 3,89÷4,78 degree angle supination 2,98÷3,67 degrees, ploskovalgusnaya deformation of the foot is diagnosed when reducing the power output of the ankle joint and supination angle and the angle is increased pronation compared to the norm.
FIELD: physics, computer engineering.
SUBSTANCE: invention relates to information technology and neurophysiology. The disclosed method of controlling external devices using brain-machine interface technology includes recording activity data of different parts of the brain using, both separately and collectively, any of electroencephalography, magnetic-resonance imaging and transcranial oximetry techniques, and processing the obtained signal based on formulae known for each type of brain-machine interface, wherein the method includes preliminary training of a classifier with respect to user-solved tasks, such that each possible user reaction is assigned certain posterior probabilities which reflect the individual nature of user preferences and which can be revised during operation of the device; wherein the weights of an instruction classifier are varied such that fewer iterations for the process of receiving instructions are required for more frequent cases and vice versa.
EFFECT: faster operation of brain-machine interface technologies.
FIELD: information technology.
SUBSTANCE: when processing a signal in a recurrent multilayer network with feedback, which closes the loop with unit character delay time less than the nonsusceptibility time of neurons in the network after excitation thereof, with shift of sets of unit characters along layers when transmitting sets of unit characters from layer to layer, said sets are delayed based on the current state of the layers.
EFFECT: broader functional capabilities of intelligent information processing in a neural network.
2 cl, 3 dwg
FIELD: neuron-like computing structures, possible use as processor for high speed computer systems.
SUBSTANCE: device contains artificial neuron network composed of analog neurons, at least one controllable voltage block, a group of long neuron-like nonlinear communication units, each one of which contains serially connected circuit for synchronization and selection of radio impulse envelope, auto-generator with self-suppression circuit, a length of coaxial line, realizing functions of antenna, additional circuit for synchronization and selection of radio-impulse envelope.
EFFECT: increased information processing speed due to increased paralleling degree of computing processes.
SUBSTANCE: system has memory, capable of storage of correlithmic object data, representing a point in local space, and processor, capable of using a metric, which is a formula for calculation of values between correlithmic object and said space points. Other variant of processing system has memory, capable of storing data about multiple cells, and processor, capable during operation of taking input value for individual cell from each of given cells of multiple cells, and to form second output value, connected to individual cell, on basis of input values, determined on basis of imaging means data. Methods describe operation of said systems.
EFFECT: broader functional capabilities.
10 cl, 4 dwg, 23 tbl
FIELD: measurement equipment.
SUBSTANCE: invention relates to facilities to monitor user motion. The method to determine risk of user fall includes stages, when they produce measurements of user motion, assess the value of the parameter related to user gait according to measurement results, and determine risk of user fall by results of comparison of the assessed value with the normal value of the parameter determined on the basis of user motion. The stage of assessment includes identification of step border in produced measurements by identification of clusters of results of adjacent measurements in produced measurements, in which the value of each measurement results exceeds the limit, or by identification of clusters of results of adjacent measurements, apart from the subset of measurement results, the value of which is less than the limit, provided that the subset covers period of time that is less than the limit time, or by identification of clusters of results of adjacent measurements, besides, the first produced result of measurements, the value of which exceeds the first limit, means the first result of measurements in the cluster, and the first produced result of measurements after the first result of measurements in the cluster, the size of which is less than the second limit, means the last result of measurements in the cluster, provided that the last measurement was made upon expiration of the minimum period after the first measurement. The fall prevention device comprises at least one sensor to produce measurements of device user motion and a processor to assess the value of the parameter made as capable of performing method actions and equipped with a machine-readable medium.
EFFECT: usage of the invention makes it possible to determine instantaneous risk of user fall.
12 cl, 6 dwg
SUBSTANCE: curvature of a root canal of a tooth is investigated by means of Picasso Trio, cone-beam computerised tomography with Ezlmplant software. The computerised tomography processes an image and transmits it to the computer. The Ezmplant software contains four active windows of object images: upper and lower teeth in frontal (coronal view), sagittal (sagittal view), axial (axial view) projections, and an object 3D-reconstruction. A section thickness of the dentofacial tissues is specified at 1 mm for all active windows of the image; after that an image of the examined tooth is selected in the required active window. The mouse cursor is passed in the active window, and the button Enter on the keyboard is pressed to remove the axes; the primary mouse button is pressed in the Measure section of the menu on the left to activate the function Angle. That activates the section Tool Options in the menu automatically, wherein the angle 4-point measurement method 4-Point Click is selected. Then the mouse cursor is passed beyond the tooth being guided by a tooth canal orifice and the mort actual point of the root canal lumen curvature for display purposes; the mouse button is pressed beyond the tooth to display the first point of the first line. The first line is drawn approximately through an apex of a triangle to be constructed and extends behind the tooth to cover the root canal lumen. The mouse button is pressed again to mark the second point of the first line; line No. 1 is produced as one side of the determined curvature angle of the root canal of the tooth - points 1 and 2. The cursor is moved onto the expected apex of the angle of the triangle describing the root canal curvature with the lines being continuous. The mouse button is pressed to mark the first point of the second line that is the third point. The cursor is displaced towards the root apex by drawing a line through it behind the tooth. The function Angle is deactivated; all four points of the angular structure are activated; their position is specified to produce the final curvature angle in degrees to be calculated automatically. The root canal curvature is taken into consideration when choosing the instruments for the high-grade endodontal treatment of the root canal.
EFFECT: method enables measuring all the root canal curvature angles precisely by enabling the multiple activation of all the elements of the angular structure and correcting positions of the points and lines of the angular structure.
5 dwg, 2 ex
SUBSTANCE: group of inventions refers to medicine. A method for measuring an individual's heart rate and/or heart rate variability is implemented by means of a device and is applicable for monitoring and/or for determining heart failure cases. When diagnosing the heart failure, the device generates an alarm signal. The device comprises a holder for placing the individual's part of the body and a motion sensor functionally connected to the holder. The holder is configured to be movable horizontally in relation to the base. The motion sensor is configured to measure the individual's motion signal horizontally. The motion sensor correlates with an electrical motion sensor and comprises a capacitor with an electric capacity formed between the first and second electrodes. The first electrode is fixed in relation to the base, while the second electrode - in relation to the holder. That is combined with measuring the individual's horizontal motion signal in relation to the base. The individual's part of the body lies on the holder and rests against it. The signal is measured by means of the electric capacity of the capacitor.
EFFECT: using the group of inventions enables measuring the heart rate and/or heart rate variability reliably or discreetly with using no sensors attached to the individual's body or adjacent the individual's body.
12 cl, 2 dwg
SUBSTANCE: group of inventions refers to medicine. A method for detecting individual's respiration and/or cardiac function is implemented by means of movement detection. A multiaxial accelerometer is placed on the individual's body. The accelerometer generates signals indicating the acceleration along separate spatial axes. A signal generation unit is used to generate a movement signal by linear combination of the accelerometer signals along the separate spatial axes. The movement signal indicates the individual's respiration and/or cardiac function. The accelerometer signals are weighed so that the accelerometer signal characterised by the maximum acceleration variation has the highest weight. The movement signal generation unit detects the accelerometer signal weight depending on correlation of the respective accelerometer signal and the accelerometer signal characterised by the maximum acceleration variation. The respective accelerometer signal weight is a correlation sign.
EFFECT: using the group of inventions enables increasing the movement signal quality having a high signal/noise ratio.
11 cl, 8 dwg
SUBSTANCE: posturographic platform is used for testing, which involves doing vertical posture maintaining exercises. Doing each exercise involves measuring vibration signals of projections of pressure centres in a horizontal plane in two mutually perpendicular directions, and an ataxy type is diagnosed. Measuring the vibration signals of the projections of the pressure centres is combined with measuring calves electromyograms, electrocardiogram and electroencephalogram An additive trend is removed from the prepared posturographic signals, and residues are used to evaluate discrete two-channel auto-regression second-order model parameters, and amplitude, medium and median powers of myograms; the electrocardiogram shows a heart rate and PQ, QS, QT lengths, a maximum power of the electroencephalogram spectrum and the respective frequency. The derived set of the informative values are classified by the statistical procedure of linear discriminant analysis.
EFFECT: method enables providing higher reliability of the diagnostic results of individual's locomotor disorders as shown by the posturographic studies by the complex assessment of the significant values.
SUBSTANCE: invention relates to field of anthropology, as well as to forensic medicine, and is intended for carrying out graphical and sculptural reconstruction of faces of ancient people from different territories and identification of personality by bone remains, in particular by skull. By skull for mongoloid groups determined are sex, age, head shape and morphologic characteristics of face by algorithm of skull correspondence by table 1. Then, by structural elements of skull calculated are characteristics, which do not have direct analogues on skull: physiognomic face height (PFH), ear height (EH), nose width (NW), width between nasolabial folds (WBNLF), filter width (FW), mouth width (MW) by equations. PFH=90.515+0.748×(MFH+6 mm) - males; PFH=86.357+0.746×(MFH+6 mm) - females; EH=55.488+0.073×(MFH+6 mm) - males; EH=45.650+0.110×(MFH+6 mm) - females; where MFH is morphological face height. NW=12.115+0.584×WBF - males; NW=13.780+0.510×WBF - females; WBN-LF=26.944+0.763×WBF - males; WBN-LF=25.657+0.685×WBF - females; FW=7.295+0.318×WBF - males; FW=7.792+0.202×WBF - females; where WBF is width between fang points. MW=25.613+0.672×WBSP - males; MW=22.915+0.541×WBSP - females; where WBSP is width of dental arch at the level of second premolars. Graphic and/or sculptural reconstruction of face is formed by measured and calculated parameters.
EFFECT: method makes it possible, due to calculation of characteristics, which do not have direct analogues on skull, by equations of regression, including dependencies, increase degree of reliability of personality identification in verbal portrait with graphic and/or sculptural method of reconstructing faces of people, belonging to mongoloid anthropological type.
4 tbl, 3 dwg
SUBSTANCE: invention refers to medical equipment, studying motion parameters (shivering) of individual's movable links of the individual's body, reflecting the functional status of the central nervous system (CNS), and can be used in diagnostic purposes for early detection of CNS pathology, in research studies of neuron mechanisms of motion management. Both hands of the person being tested are placed in contact to a support member; a marker shift on the display screen shows a voluntary isometric effort applied to the support member, and time sequences (TS) of involuntary and voluntary components of the isometric efforts are formed. Graphically main components (MC) the amplitude-frequency parameters of which describe a cyclic activity of motion control system loops closed at different levels of the CNS from the TS within the frequency range of 100 to 0.1 Hz by mathematical analysis SSA-Caterpillar are recovered and displayed. That is followed by the frequency-amplitude analysis of the parameters of each TS in accordance with the position range in relation to a frequency axis and the visual analysis of a pattern structure obtained for the isometric effect on the basis of signs specific for healthy persons being tested and the patients suffering neuromotor disorders. The TS is distributed in the MCs at a quantising pitch of not less than 100 Hz; the MCs that are involved in the TS by not less than 5% are recovered for the analysis. The CNS pathology and functional status is shown by asymmetry of the right- and left-hand MCs, and/or by maximum MC shift in relation to the frequency axis, and/or by fusion of two or more MCs.
EFFECT: method provides high-accuracy diagnosing the functional status of the CNS by recovering the specific diagnostic parameters enabling determining activity and its disorders for the respective CNS structures.
SUBSTANCE: group of inventions refers to medicine. A device for cardiac value measurement comprises a catheter and the first measurement unit detecting the repeated local heartbeat within a readout point from a readout signal as the first cardiac value. The catheter comprises the first value readout unit for the heartbeat signal readout specifying the repeated local heartbeat within the heart readout. The first measurement unit is configured to determine the repeated local heartbeat rate and/or phase. A computer program for cardiac measurement is saved on machine-readable media and comprises a program control unit to command the computer executing the computer program to control the device for cardiac measurement.
EFFECT: using the group of inventions provides more accurate cardiac measurement.
12 cl, 11 dwg
FIELD: aircraft engineering.
SUBSTANCE: proposed system comprises sensitive transducers arranged at pilot outfit and connected with built-in computer. Flying gear incorporates inertial transducers (accelerometers and gyros) and mechanical goniometric sensors for definition of the pilot upper and lower extremities. Gloves house inertial sensors for definition of motion and orientation (angular position) of hands, strain gage transducers for determination of hands flexion, palm compression, hands turn, and piezoelectric crystal transducers at finger tips for determination of pressure on the surface. Socks house strain gages and piezoelectric crystal transducers for determination of foot motion and depression at pedals. Belt accommodates accelerometers and gyros for determination of pilot body motion jointly with aircraft at manoeuvring. Pilot outfit accommodates the built-in computer for compensation for errors in integration of accelerometers and errors in measurements of rough mechanical sensors.
EFFECT: higher precision of evaluation of pilot working condition.
SUBSTANCE: electronic device employs a mathematical model based on acceleration data to estimate power consumption of a person as a function of actual activity and acceleration values. Acceleration values are converted to a power consumption estimate for given activity by scaling the value of time-integrated acceleration data, with activity scaling parameters. The activity scaling parameters for various activities are determined separately by comparing measured power consumption, for example during the day, with estimated power consumption during the same period. The estimate is determined using a mathematical model.
EFFECT: higher accuracy of determination.
11 cl, 3 dwg
SUBSTANCE: invention relates to medicine, namely to traumatology of the maxillofacial area, and can be applied for the treatment of mandibular fractures. For this purpose the reposition and fixation of bone fragments by means of osteosynthesis or dental splints are carried out. After the reposition and fixation of bone fragments, diluted with physiological solution or the local anaesthetic botulinum toxin A - Botox or B Myoblock is introduced once into the muscles, participating in the displacement of mandible fragments. The preparation is introduced with the distribution of the total volume and maximally allowed quantity of units by 20% in the area of muscle fixation to the bones and by 80% into the zone of the highest electric activity of the muscles, verified by the method of electromyography.
EFFECT: method provides an increased rigidity of fixation of the mandible bone fragments due to the reduction of a risk of displacement and mobility of the fragments, acceleration of consolidation processes.