The management of partially lacerated flexor tendons remains controversial. Some have advocated repair of a partially severed tendon to restore gliding function, whereas others have recommended foregoing tenorrhaphy because of the negative impact of repair on the tensile strength of the tendon. Studies in several laboratories have suggested that tendons with up to 60% cross-sectional area involvement may be strong enough to withstand an early active mobilization regimen without rupture. In addition, tenorrhaphy does not significantly improve gliding function in tendons with up to 70% laceration. For these reasons, we recommend tenorrhaphy only for those tendons with greater than 60% laceration of cross-sectional area or those that trigger. Meticulous surgical technique and early protected mobilization provide the best chance for an optimal result.