Extensor tendon injuries have a documented incidence rate of 14 occurrences per 100,000 person-years, making them the most frequent tendon injuries. With an estimated frequency of 17.9 and 9.9 instances per 100,000 people per year, respectively, extensor tendon injuries and mallet finger represent 16.9% and 9.3% of orthopaedic soft tissue injuries. Here will be discussing regarding a 28 years old male gives alleged h/o work place injury following which he sustained injury to his right hand. On examination, laceration of size 3 x 5 cm exposing the underlying soft tissue, bone, extensor tendon with muscle was seen. Active extension of middle finger was not possible. X ray revealed no obvious bony fracture or dislocations. Intra-operatively, tendon was identified as extensor communis, the tendon freshened and reattached with adjacent tendon. Boutonniere deformity noted in the middle finger, due to the volar subluxation of lateral band was corrected. Patient’s hand was immobilized in plaster for 3 weeks and rehabilitation was started gradually. At the final follow up patient was able to functionally extend his metacarpophalageal and interphalangeal joints to full range of motion without any deformities. His visual analogue scale was 1/10 at the end of 3rd month. Keywords: Tendon injury, Extensor apparatus, Multiple tendon injury, Zone 3 injury, Zone 6 injury, Surgical repair of tendon.