Search for: [Abstract = "uteus maximus, rectus femoris, tensor fascia latae\) using surface electromyography \(sEMG\) during standing position on one lower limb. Kinematic measurement of the range of hip joint mobility \(ROM\) was performed. The energy expenditure during the 3\-minute exercise test was also calculated with the Physiological Cost Index \(PCI\). The functional status of the patient was determined using The Western Ontario McMaster Osteoarthritis Index \(WOMAC\) and Harris Hip Score \(HHS\). Selected biomechanical parameters were measured before the procedure and three and six months after the total hip replacement. Results\: Bioelectric recording of muscle activity showed statistically significant differences between the lower limb with OA and a healthy hip joint for GMed, GMax and TFL in the first study. The muscles on the non\-degenerative side were more active and the muscle most involved in the attempt to stand on one lower limb was GMed. In the subsequent stages of the examination, the tensor fasciae latae of both hip joints took the greatest part in the task. In the third month after the operation the difference in muscle activity between limbs was statistically significant only for GMed and TFL, whereas in the sixth month only for RF. The activity of all examined lower limb muscles increased with each subsequent measurement with statistical significance especially for GMed and TFL. In the case"]
