Applied Anatomic Study On Posterolateral Complex Reconstruction And Biomechanic Study Of Popliteus Tendon And Lateral Collateral Ligament

Objective: To observe the morphological character of posterolateral complex of the knee in normal adult cadavers, and measure the insertions, the length, the cross section area and the biomechanics of the key components of the PLC in order to provide the anatomical basis for clinical application.Methods: Fresh lower limb specimens of twenty-three male Chinese and nine formalin-preserved lower limb were selected for anatomic study on the posterolateral complex(PLC) of the knee. Six fresh specimens were applied to measure the biomechanics. The methods included: (1) observing the position and pathway of the popliteus tendon(PT), popliteofibular ligament(PFL) and lateral collateral ligament(LCL) — the key structures of the PLC , (2) measuring the length and the cross section area of the three main structures mentioned above, (3) measuring the distance between the key structures and the related bony landmarks, (4) measuring the biomechanics of the PT and PFL.Results: (1) The popliteus originated from the medial 2/3 of the posterior surface of the proximal tibia, overlying Soleus obliquely, ascended tiltedly along posterior tibia, where the popliteus muscle transforms a tendon...