A Study Of A Safe Area And Angle For Harvesting Autogenous Hamstring Tendons For Anterior Cruciate Ligament Reconstruction

Objective an incision were identified through the anatomy of the knee joint security area and angle,for avoiding to damage the saphenous nerve and its infrapatellar branch in harvesting gracilis tendon and semitendinosus tendon.Methods Selecting 10 cases of knee joint fresh specimens,and isolating the saphenous nerve and its branches.The place in the inner edge of patellar ligament tibial tubercle was marked as A point.Drawing a horizontal line after A point,the intersection of saphenous nerve trunk and A point was C landmark,the intersection of saphenous nerve infrapatellar branch and A point was B landmark.To measured the distance of AC and AB.The scope of operation safety and incision angle would be calculated through the analysis and statistics.Results incision security range: The distance AC was(5.5±0.3)cm,The distance AB was(3.5±0.2)cm.incision security angle: The saphenous nerve infrapatellar branch was(50.7±4.8)°,The saphenous nerve tibial tubercle branch was(43.3±5.4)°.Conclusion Incision of the scope of security was the inside of the inner edge of patellar ligament tibial tubercle(A point).The distance was(3.5±0.2)cm.Angle was(50.7±4.8)°.