Inclusion Criteria:  Patients with section of the superficial and / or profundus flexor tendons in the hand. Patients with section of the flexor tendon in the thumb Tendon injury in any anatomical area In the acute, subacute or chronic phases of the disease Associated or not with fractures Associated or not with arterial or nerve injuries  Exclusion Criteria:  Previous bone disease History of tendon injury to the extensor or flexor tendons Joint stiffness prior to tendon section Rheumatic arthropathy History of operations in the same area.