The aim of this paper was to evaluate quadriceps peak torque after 6 months from the muscle contusion. The clinical material consists of 4 male cases, age range from 19 to 47 who sustained a quadriceps contusion of dominant leg. An isokinetic evaluation of quadriceps peak torque showed significant decrease in comparison to opposite healthy leg by average 19,5% in spite of full range of motion recovery. Heterotopic bone formation was disclosed on x-rays in two cases. This study indicate the need of additional objective isokinetic evaluation of quadriceps muscle after its contusion.