Graphic comparison indicates that the results of grafts within the flexor tunnel are distinctly better than those of primary repair. The relatively poor results of primary repair would seem to indicate that grafting procedures might be preferable in the treatment of injuries within the flexor tunnel. However, the results of primary repair outside the flexor tunnel and of the flexor pollicis longus are markedly better than those within the tunnel. The shorter period of disability following primary repair would seem to justify the continued handling of those injuries outside the flexor tunnel and of the thumb in this manner. Grafting remains available for the severely traumatized wound, or to correct the poor result.