Burkhart S S
Department of Orthopaedic Surgery, University of Texas Health Science Center at San Antonio 78258-3931, USA.
Arthroscopy. 1995 Feb;11(1):119-23. doi: 10.1016/0749-8063(95)90100-0.
Suture anchors are being increasingly reported as a means of fixation of torn rotator cuff tendons to bone. The author has developed a mechanical model for the suture anchor-rotator cuff construct based on an analogy to the deadman system used to stabilize a corner fence post. Using this model, one can demonstrate a mechanically favorable angle of insertion of the suture anchor (theta 1) such that the anchor's pullout strength is increased at low angles of theta 1. In addition, the angle that the suture makes with the direction of pull of the rotator cuff (theta 2) has a direct effect on tension in the suture. A low angle of theta 2 minimizes the total tension in the suture, thereby minimizing the chance of suture breakage.
越来越多的报道称，缝合锚是将撕裂的肩袖肌腱固定到骨骼上的一种方法。作者基于与用于稳定角落围栏柱的重锤系统的类比，开发了一种用于缝合锚-肩袖结构的力学模型。使用该模型，可以证明缝合锚的机械插入角度（θ1）是有利的，使得在低θ1角度时锚的拔出力增加。此外，缝线与肩袖牵拉方向所成的角度（θ2）对缝线中的张力有直接影响。低θ2角度可使缝线中的总张力最小化，从而将缝线断裂的可能性降至最低。
