In Vietnam injuries of the hand are common. Of these hand injuries, flexor tendon injury is one of the most common, with many patients having a poor surgical outcome. This study looked at patients presenting for a revision of their flexor tendon repair, and followed their rehabilitation. Patients selected for this study were those that were having repairs of flexor tendon zones 3, 4, and 5. The study enrolled patients being admitted to Viet Duc hospital, between October 2008 and March 2011. The cohort was comprised of 30 patients, with a total of 116 fingers. The outcome of the operation was either good, or very good, in 50 percent of these revisions. Furthermore, flexion was improved in post-operative examination in all of the cohort. Factors affecting the outcome were: the mechanism of injury, the occupation of the patient, the time between the original operation and the revision, the patient's access to rehabilitation, and whether the tendon injury had an accompanying bone injury. Post-operative complications occurred in 10 percent of patients.