Introduction- The main motor abnormalities commonly seen after ulnar nerve palsy are claw finger deformity, asynchronous finger motion, loss of lateral movement of the fingers, and decreased grasp and pinch strength. The present case series of 10 patients was done to share our experience on tendon transfer surgery for claw hands. Material and methods- The present prospective study was conducted at department of plastic and reconstructive surgery during the study period of one year. Through convenience sampling a total of 10 patients were selected. Age, gender, level, palsy time, follow-up time, grip strength, preoperative and post-operative active extension lag, and percent of improvement were assessed and results were analyzed using SPSS version 25.0. Results- The mean age of patients was 31.23±3.8 years. Out of 10 patients 6 were male and 4 were female. Mean paralysis time was 46.54±3.8. level of injury was high in 7 patients and low in 3 patients. Mean follow up time was 44.12±5.6 months. The mean value of extension lag was 27º ±9 preoperatively which changed to 9º±6 post operatively. Mean patients were 20% active at the time before surgery while improvement was seen in 75% of patients condition post operatively. Both of the results were significant with p value <0.05. No complication was found in 7 patients while 2 patients developed swan-neck deformity and 1 patient had PIP joint contracture of less than 30°. Conclusion- In protracted instances, the application of the FDS 4-tail approach is a highly effective method for achieving favourable prognoses. Preoperative rehabilitation is essential for equilibrating the strength of the donor and antagonist muscles of the recipient.