Successful repair of the severed tendon is a problem which has not been completely solved. Numerous excellent articles on the subject have appeared in recent years,1 but certain factors still prevent the surgeon from achieving the best result in the surgical repair of a lacerated tendon, especially of the hand and wrist.
In the period from Jan. 1, 1935 to Jan. 1, 1945 primary suture of the tendons of the hand and wrist was performed at the Mayo Clinic in 43 cases. Only the cases in which the patients were treated within four hours after injury and in which bone was not involved were included. Cases of secondary repair and tendon grafts were excluded from the group. Tendon lacerations, compound fractures and avulsions are encountered fairly commonly in the same case at the clinic because of the accidents which occur in the large surrounding rural community. In the fall