Final answer:
The loose packed position of the tibiofemoral joint is around 25 degrees of flexion, where ligaments and joint capsule have the least tension and there is increased joint mobility.
Step-by-step explanation:
The loose packed position of the tibiofemoral (knee) joint is generally considered to be around 25 degrees of flexion. This is the position where there is the least amount of tension in the ligaments and the joint capsule, and where the joint structures are not as closely apposed. In this position, there is minimal congruence of joint surfaces, which means less bony stability but more freedom for the structures within the knee to move and accommodate, making it optimal for joint mobilization and manual therapy treatment interventions.