English to Portuguese Tech/Engineering Medical: Instruments Surgical technique

"First, place the superior pin in the midline of the superior body. Insert the needle portion of the pin only. Next, place the notch in the end of the plate against the bulb portion of the pin. Once the plate is precisely positioned, insert the inferior pin through the plate in one of the small midline holes at the other end of the plate. Insert the needle portion of the pin only. Next, place the notch in the end of the plate against the bulb portion of the pin. Once the plate is precisely positioned, insert the inferior pin through the plate in one of the small midline holes at the other end of the plate."