Final answer:
The patellar ligament requires a bone block on both the proximal (femur) and distal (tibia) sides, as it is associated with the patella that articulates with the femur and lifts the tendon away from the knee joint.
Step-by-step explanation:
The tissue that requires a bone block on both the proximal and distal sides is the patellar ligament. The patella, or kneecap, is the largest sesamoid bone in the body, embedded within the tendon of the quadriceps femoris muscle. This specific arrangement is crucial, as the patella articulates with the patellar surface of the femur, preventing the muscle tendon from rubbing against the bone during joint movements.
At the femoropatellar joint, the patella is crucial for protecting the quadriceps tendon from friction against the distal femur and for increasing the leverage power of the quadriceps femoris muscle during knee extension, which is acted upon by the patellar ligament extending from the patella to the tibia.The patellar ligament requires a bone block on both the proximal and distal sides.