Abstract:

BACKGROUND: Biceps femoris tendon and lateral collateral ligament are two important components of the knee posterolateral complex, and play important roles in maintaining the stability of knee posterolateral complex.
OBJECTIVE: To study the impact of biceps femoris tendon and lateral collateral ligament attachment point reconstruction on the stability of the knee joint after the fibula head composite flap surgery.
METHODS: Ten cases of male fresh frozen knee cadaver specimens were selected; biomechanical torsion testing machine was used to measure the tibial external rotation angle at different torques before fibula head composite flap surgery and after biceps femoris tendon and lateral collateral ligament attachment point reconstruction.
RESULTS AND CONCLUSION: Under the condition of the same torque, the tibial external rotation angle was increased with extension of knee flexion angle, and there was significant difference of the tibial external rotation angle before fibula head composite flap surgery and after biceps femoris tendon and lateral collateral ligament attachment point reconstruction; under the condition of the different torques, there was a positive correlation between external rotation angle and knee flexion angle. After the fibula head composite flap surgery, biceps femoris tendon and lateral collateral ligament attachment point reconstruction will not influence the stability of the knee joint.