Comparison of treatment results - survival and reconstruction of autographs and functional results of the knee joint, and functional results of the ankle joint, obtained in the study groups operated using two methods:~A- the use of a long fibular tendon autograft taken from the lower leg of the same limb and used as a graft for ACL reconstruction (anterior cruciate ligament) of the knee joint; B- the use of Hamstring muscle tendon autograft (Semitendonus and slender muscle) taken from the lower leg of the same limb and used as a graft for ACL reconstruction (anterior cruciate ligament) of the knee joint.
Comparative evaluation of functional results and survival rate of peroneus longus tendon - PLT and hamstring tendon - HT used for reconstruction of the anterior cruciate ligament.