The SmartEMG application ( ) enables the implementation of procedures performed during an examination as well as those involved in the management of the collected recordings. The arithmetic mean for the 6 analyzed motions in the injured group is 38.54% lower. The results indicate that the muscle activation force is considerably lower in injured individuals. The study involved examining ten subjects, including five controls. The data obtained by means of the Myo controller was used for pattern recognition of an injured hand with relation to the healthy one. The process of their rehabilitation is complex and requires a continuous monitoring of its progress. The device has been used for the analysis of muscle activation levels in patients with 'tennis elbow' and 'golfer’s elbow'-conditions of upper limbs which usually result from occupational injuries. One such device is the Myo movement controller, produced by Thalmic Labs (now North). With the appearance of new devices retrieving EMG data, novel methods of its processing for various purposes are being developed. The application of this technology is becoming an increasingly popular subject of scientific research. Electromyography (EMG) is a diagnostic technique allowing for the detection of signals generated by changes in electrical potentials of striated muscles.