การศึกษาประสิทธิภาพของรูปแบบการร้อยไหมในการเพิ่มความเสถียรในแนวนอนของข้อต่ออโครมิโอคลาวิคิวลาร์โดยใช้วิธีไฟไนท์เอลิเมนต์

Abstract

Injuries to the acromioclavicular (AC) joint commonly result from high-impact trauma such as falls or sports activities. The severity of these injuries is classified into five levels, with surgical intervention often required in severe cases to stabilize the joint using suture fixation. Despite the availability of various suture techniques, there is still no established standard approach. FiberWire No.2 is a commonly used suture material; however, comprehensive mechanical property data remain limited. This study aims to analyze the mechanical properties of FiberWire No.2 and compare the performance of two suture techniques—Anterior Frame and V-frame—using finite element method (FEM) analysis. Mechanical properties of the suture were obtained through tensile testing with a Universal Testing Machine and used to develop FEM models simulating suture behavior under load. For technique comparison, FEM models of the AC joint—including the clavicle, scapula, and sutures in both configurations—were developed. Loading conditions of 100 N and 600 N were applied in the anterior–posterior, posterior–anterior, and superior–inferior directions to evaluate the relative motion of the bones. The results indicate that the V-frame technique provides greater joint stability than the Anterior Frame configuration by reducing joint displacement under all loading directions. This demonstrates the superior potential of the V-frame technique for surgical application in AC joint stabilization.