Final answer:
In a PCL-deficient knee, it is generally considered beneficial to decrease the tibial slope to help stabilize the joint and reduce strain on the PCL graft during arthroscopic surgery.
Step-by-step explanation:
In cases of a PCL-deficient knee, adjustments to the tibial slope are considered to help stabilize the joint. Arthroscopic surgery, a minimally invasive procedure, can be used to treat various knee injuries including damage to the meniscus or the cruciate ligaments. During reconstruction of the anterior cruciate ligament (ACL), a patellar ligament graft is utilized. The tibial slope is an important factor in knee biomechanics and altering it can affect the tension on the cruciate ligaments. While the exact adjustment to the slope depends on the specifics of the injury and the reconstruction technique, generally, a decreased tibial slope can help reduce strain on a PCL graft. In contrast, for injuries to the ACL, increased tibial slope might be beneficial because it can reduce anterior tibial translation and strain on the reconstructed ACL.