Patella dislocation is an injury affecting teenagers. This pathology is associated in the majority of the cases with a dysplasia of the femoro-patellar joint. MFPL is a passive restraint to patellar lateral displacement. Rupture of the MFPL would predispose the patients to redislocate their patella. Therefore, a reconstruction of this ligament seems to be a logical proposal for the treatment of recurrent patellar instability. This surgery, carried out with three incisions of small size, would decrease the recurrent dislocation. However, a long-term analysis of the results of this surgery is recommended.