Early motion of the affected finger is essential to healing of repaired flexor tendon,but it may result rupture if the tensile strength of the tendon is not great enough to sustain pulling force.On the other hand, over protection by inhibiting finger motion, the repaired tendon tends to adhere to the surrounding tissue.A good strong suture should be tight and secure against rupture and concomittently allow early motion of the finger. In this study we compared 4 basic suture techniques on one tendon end and eight both ends tendon suture technique as derived from basic methods.Although there are some differences between groups the most significant factor is the number of strands between the repaired tendon ends. The mean tensile strength were 1.75,3.09 and 4.54 Kgs in each group of two, four and six strands. The selection of suture technique depends on number of strands and clinical feasibily.