A
Loose in flexion and loose in extension
B
Tight in flexion and loose in extension
C
Tight in extension and loose in flexion
D
Isometrically tight throughout the entire range of motion
Explanation:Correct Option: B. Graft isometry is highly dependent on femoral tunnel position. A femoral tunnel placed too anteriorly (high in the notch in extension, shallow) relative to the native ACL footprint will cause the graft length to increase significantly as the knee flexes. This results in a graft that is excessively tight in flexion (limiting knee flexion or 'capturing' the joint) and unacceptably loose in extension. (Ref: Amis and Dawkins, J Bone Joint Surg Br, 1991)