Arthroscopic Reconstruction Of Posterior Cruciate Ligament With Quadriceps Tendon Fixed By A Patellar Block

Objective:To discuss the design of arthroscopic reconstruction of posterior cruciate ligament(PCL)with quadriceps tendon fixed by a patellar block,and its clinical outcome.Methods:Thirty-threes patients suffering from PCL injury were treated by the technique mentioned above.The connection between quadriceps tendon and superior patellar pole was preserved in the havest process of quadriceps tendon,the femoral tunnel was a small tunnel,about 10～11mm wide,which was clogged with the patellar bone block.The quadriceps tendon strip was fixed by an absorble screw into the tibial tunnel. their functional recovery,was evaluated by Lysholm scoring and IKDC(International Knee Documentation Committee)criteria.Results:In the average follow-up period of 19 months,there were not any severe nerve or blood vessel lesions,or failures of transplanted ligament.None of the patents complained of knee instability after the opration.The pain was relieved in most patients,but three complained of pain after knee movement.A little calcification was found in the quadriceps tendon at the superior patellar one year after the opration in the X-ray of a patient,three was significant difference in Lysholm scale between pre-opration and post-opration(p＜0.01).their IKDC evaluation before opration significantly improved after opration.Conlusions:quadriceps tendon harvest may have little influence on the donor area.And quadriceps tendon is similar to PCL in biomechanics and can be harvested in any length and width needed so as to provide more strength than PCL.As a result,arthroscopic PCL reconstruction with quadriceps tendon fixed by a patellar block can be done with a high success rate and few complication.