METHOD FOR COMPLEX ASSESSMENT OF UPPER EXTREMITY FUNCTION Russian patent published in 2020 - IPC A61B5/22 A61B5/488 

FIELD: medicine.

SUBSTANCE: invention refers to medicine, namely to such areas as neurology, orthopaedics, traumatology, ergonomics, biomechanics, sports, physiology and psychophysiology. Disclosed is a method for complex assessment of upper limb function involving a patient's examination using a power platform. Examination is carried out using a power platform and an electromyograph with simultaneous recording of electromyographic and power parameters of the control arm in forearm and hand. Upper limb function is examined in turn for each of the hands or for only one arm. Test person is placed sitting or standing before horizontal surface with installed on it power platform with stationary fixed on platform fixed handle, through which hand forces are transmitted to power platform for their registration at such position of analysed extremity, in which test elbow is located on horizontal surface in front of power platform. Hand of the person being tested is placed in a position at which force is transmitted through the brush to the handle. Force associated with isometric or low-amplitude activity of the hand or forearm muscles is transferred to the handle. It involves simultaneous registration of electromyographic parameters of the control arm in forearm and hand, second, power parameters, third, degree of executing instructions in biological feedback mode. In the task determining the directed application of hand power of the person being tested to the handle with low-amplitude or isometric movements of the hand, determining the calculated parameters describing the trajectory of the force application point, determining electromyographic parameters of flexor and forearm and hand extensors muscles in the form of values of maximum, average, total amplitudes and average frequency of the signal from the turbo-amplitude analysis of the interference electromyogram. Conclusion on improvement of function of upper extremity is made based on change in electrical activity of test muscles, manifested in reduction of maximum, medium and total amplitudes of electromyogram at normal or increased values of muscular contraction frequency, change of power characteristics of hand control, manifested in corresponding change of design factors - reduction of lengths, power consumption of statokinesiogram, as well as increasing the degree of performing the task with biological feedback - from the ratio of the maximum possible result of the execution of the motional task with the actual achieved by the instruction. Conclusion on worsening of function of upper limb is made with increase of amplitude indices of interference electromyogram, reduction of average frequency of muscular activity against background of increased values of indicator of length of statokinesiogram, increasing design length and power capacity of statokineticogram, as well as reducing degree of task-related task execution. Outside the dynamic assessments of the function, a quantitative characteristic of the function of the upper limb or both limbs at the current time is given by the above indices.

EFFECT: invention provides the broader functional capabilities of the method for the upper extremity function integrated assessment by providing the possibility to assess the function for each hand separately or one of the hands, high accuracy of the method by reducing the probability of detecting the weight of the person being tested transmitted through the support to the hands instead of the desired examination of limb function, as well as increasing the information content of the study in the context of the desired complex assessment.

1 cl, 3 tbl, 2 dwg