Patient was using a chain saw, which slipped, and the patient sustained a 5.0 cm laceration to the dorsum of the proximal portion of the left index finger, extending through the extensor tendon and capsule. debridement of tissue was done to facilitate a better repair of this deep laceration. tendon and capsule were sutured with five 6-0 silk sutures. bleeders were ligated with plain catgut. skin was debrided extensively and approximated with seven sutures of 4-0 dermal.