A 1993 AAOS instructional course lecture by Fu and colleagues reviewing the biomechanics of the four major knee ligaments — ACL, PCL, MCL, and LCL — covering material properties, kinematics, ligament healing biology, and graft science as a foundation for reconstructive surgery.
When counseling patients after ACL reconstruction, remember that even a well-placed graft operates at 30–40% of native strength for months to years — this is the biomechanical basis for staged rehabilitation and delayed return-to-sport criteria.
When managing isolated MCL injuries, the data support non-operative treatment: the MCL heals spontaneously (unlike the ACL), though its material properties never fully normalize.
A 1993 AAOS instructional course lecture by Fu and colleagues reviewing the biomechanics of the four major knee ligaments — ACL, PCL, MCL, and LCL — covering material properties, kinematics, ligament healing biology, and graft science as a foundation for reconstructive surgery.
When counseling patients after ACL reconstruction, remember that even a well-placed graft operates at 30–40% of native strength for months to years — this is the biomechanical basis for staged rehabilitation and delayed return-to-sport criteria.
When managing isolated MCL injuries, the data support non-operative treatment: the MCL heals spontaneously (unlike the ACL), though its material properties never fully normalize.