OBJECTIVES: In the rehabilitation of people with osteoarthritis the unstable - and the suspension devices relevance still unclear, but there have been plenty of studies abroad confirmed the suspension training method efficiency, among athletes, healthy people and also people with certain types of musculoskeletal insufficiencies. In our research, we wanted to compare the efficiency of the suspension training method versus a general physiotherapy training program. We created an intensive 4 week long training program using a TRX Suspension device and also we made an other program with general open kinetic chain exercises, both adapted to elderly person with osteoarthritis. METHODS: There were 75 volunteers, but only 50 were suitable of them to start the training program the other 25 were not capable of doing it because of our inclusion criteria (55-75 years of age with Seyfried I. or II. stadium of osteoarthritis) or exclusion criteria (lower limb emergency intervention, osteoporosis, or internal medical disease). For the data collection we used a physiotherapy test sheet which was created by Péter Tardi. We used special test to determine their balancing capacity (Flamingo test), the strength endurance (Squat Test at Home), the functional physical performance (Timed Up and Go), the muscle strength (Oxford Medical Scale), and their Range of Movement (with goniometer). RESULTS: The patients in the TRX group have a significantly greater improvement in static balancing ability (p < 0.05), functional performance (p < 0.05), strength-endurance (p < 0.05), and muscle strength and in the joint’s range of movement. CONCLUSIONS: Given the results that were achieved, we can say that the TRX Suspension Trainer or other suspension devices are useful in the rehabilitation for people with hip or knee osteoarthritis.