Final answer:
A surgeon may use a shaver or bone burr to remove excess bone from the femoral tunnel during ACL reconstruction, a procedure made less invasive by the use of arthroscopic techniques.
Step-by-step explanation:
During an ACL reconstruction, a surgeon might use a variety of instruments to remove excess bone from the femoral tunnel. One common tool for this purpose is a surgical shaver or bone burr. A reamer is a surgical tool used to widen or shape a hole, and in this case, it is used to trim any excess bone from the tunnel created in the femur during the reconstruction procedure. These instruments are designed to carefully remove bone tissue while minimizing damage to the surrounding areas. The use of arthroscopic surgical techniques has significantly streamlined procedures like ACL reconstructions, making such surgeries less invasive with reduced recovery times.