A
An isolated anterior cruciate ligament tear
B
A total meniscectomy in that compartment
C
A bucket-handle tear of the lateral meniscus
D
A partial meniscectomy with intact hoop stresses
Explanation:Correct Option: B. A complete posterior medial meniscal root tear profoundly disrupts the circumferential 'hoop stresses' of the meniscus. Biomechanically, this renders the meniscus completely incompetent, leading to altered contact mechanics, increased peak contact pressures, and joint kinematics that are equivalent to a total medial meniscectomy, rapidly accelerating osteoarthritis. (Ref: Allaire et al., J Bone Joint Surg Am, 2008)