The article describes the use of high-intensity magnetic stimulation (IUD) apparatus in patients with sarcopenia who underwent total knee arthroplasty. For this purpose, the magnetic stimulator “Neuro-MS” and the electroencephalographic apparatus “Neuron-Spectrum-5” were used. Based on electroencephalography, the dominant spectral peak (DSP) of the alpha rhythm and theta rhythm of the motor area of ​​the patient’s brain was determined. The use of the device allows you to reduce swelling, the intensity of pain, restore muscle strength, increase the range of motion in the operated joint.

Keywords: High-intensity magnetic stimulation, HIMC, sarcopenia, total knee arthroplasty, TKR

In order to improve minimally invasive technique knee arthroplasty authors propose "retractor to retract the patella in minimally invasive total knee arthroplasty," which can improve visualization during surgery to protect the extensor apparatus of the knee joint and reduce the number of complications and "Apparatus for carrying a minimally invasive knee arthroplasty" to improve the accuracy of the endoprosthesis implantation through access «quadriceps-sparing».

Keywords: invasive knee replacement, gonarthrosis, medical instruments

In order to improve techniques of minimally invasive total knee arthroplasty (IEAC) based on anatomical studies, we have developed a mathematical model and a computer program IEAC preoperative planning that takes into account the anthropometric data of the patient (body type, size patellar index Insall-Salvati), type and size of prosthesis and allows to calculate minimal incision and maximum elongation wound during surgery. Use of this software improves the accuracy of the planning and preparation of surgery, to improve the accuracy of implantation of the prosthesis.

Keywords: minimally invasive replacement of knee joint, computer modelling, preoperative planning, computer software preoperative planning