Sharma Vivek, Curtis Christine, Micheli Lyle
Orthopedic Surgery, Cincinnati Children's Hospital Medical Center, 3333 Burnet Ave, Cincinnati, OH 45229, USA.
Orthopedics. 2008 Oct;31(10).
Anterior cruciate ligament (ACL) reconstruction is quite commonly used to treat anterior knee instability. Surgeon preference and patient functional goals determine graft selection and graft fixation techniques. Interference screws are considered a safe and effective device for graft fixation in surgical ACL reconstruction. Poly-L-lactide acid (PLLA) bioabsorbable interference screws are becoming increasingly popular in ACL reconstruction surgery. There are several reasons why they may be more advantageous than metallic screws, including reduced graft laceration during insertion, ease of performance of revision procedures, avoidance of graft injury encountered with aperture fixation using metallic screws, and fewer artifacts on magnetic resonance images (MRI). Few studies describe complications associated with PLLA bioabsorbable screws, particularly extra-articular screw migration. This article presents a case of an extra-articular extraosseous migration of the femoral bioabsorbable interference screw. This case further demonstrates the problem of the femoral bioabsorbable interference screw.
前交叉韧带（ACL）重建术常用于治疗膝关节前侧不稳定。外科医生的偏好和患者的功能目标决定了移植物的选择和移植物固定技术。在ACL重建手术中，挤压螺钉被认为是一种安全有效的移植物固定装置。聚-L-乳酸（PLLA）生物可吸收挤压螺钉在ACL重建手术中越来越受欢迎。它们可能比金属螺钉更具优势，原因有几个，包括插入过程中减少移植物撕裂、翻修手术操作简便、避免使用金属螺钉进行孔径固定时遇到的移植物损伤以及磁共振成像（MRI）上的伪影较少。很少有研究描述与PLLA生物可吸收螺钉相关的并发症，特别是关节外螺钉移位。本文介绍了一例股骨生物可吸收挤压螺钉关节外骨外移位的病例。该病例进一步证明了股骨生物可吸收挤压螺钉的问题。
