The artificial replacement of the hip joint has become a routine operation the assessment of load resistance of the total hip prothesis (THP), on the other hand, is very variable. If at all possible, a THP should only be implanted in elderly people usually with the object of obtaining painless and improved walking ability. Occasionally, however, the question of the possibility of sports activities arises. But for this there are no practical pointers for better orientation. Therefore 120 operated patients under the age of 60 were questioned in detail on their sports activities and followed up. Then an attempt was made to classify the types of sport. Swimming, cycling, gymnastics, walking and rowing seemed suitable.