Background: Although there are many surgical methods to repair and rehabilitation of the flexor digitorum profundus tendon in zone 1, there are still no good results and widely application.Purpose: Repair and rehabilitation of the flexor digitorum profundus tendon in zone 1 may be demanding.The aim of this study was to assess a new technique for the treatment of flexor digitorum profundus tendon complete laceration in zone 1 which involves a tenodesis using a length of palmaris longus tendon one-third of its width.