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Screw and Sheath Tibial Fixation Associated With a Higher Likelihood of Deep Infection After Hamstring Graft Anterior Cruciate Ligament Reconstruction.
The American Journal of Sports Medicine ( IF 4.2 ) Pub Date : 2020-02-12 , DOI: 10.1177/0363546520902716
Andrew P Hurvitz 1 , Heather A Prentice 2 , Tadashi T Funahashi 3 , Gregory B Maletis 4
Affiliation  

BACKGROUND Hamstring autograft anterior cruciate ligament reconstructions (ACLRs) have exhibited higher infection rates compared with bone-patellar tendon-bone (BPTB) autograft. The reason for this observed difference is unclear, warranting investigation. PURPOSE To evaluate the association between tibial fixation, either with or without a sheath and screw construct, and the risk of deep infection after hamstring autograft ACLR, using BPTB autograft as a reference group for comparison. STUDY DESIGN Cohort study; Level of evidence, 3. METHODS Using the Kaiser Permanente ACLR Registry, we identified all primary isolated, unilateral, single-bundle ACLRs with a BPTB or hamstring autograft (January 1, 2008, to September 30, 2016). The exposure groups included the following: (1) BPTB ACLR, (2) hamstring ACLR using a screw and sheath construct for tibial fixation (HS with screw and sheath), and (3) hamstring ACLR using a method other than a screw and sheath construct for tibial fixation (HS without screw and sheath). We used logistic regression to evaluate the likelihood of 90-day postoperative deep infection using BPTB autograft as the reference group and adjusting for age, sex, and body mass index. The number needed to be exposed (NNE) was calculated. RESULTS Of 15,671 ACLRs, 6745 (43.0%) used a BPTB graft, 2852 (18.2%) used HS with screw and sheath tibial fixation, and 6074 (38.8%) used HS without screw and sheath tibial fixation. There were 38 (0.2%) 90-day deep infections: 11 (0.2%) for BPTB, 14 (0.5%) for HS with screw and sheath, and 13 (0.2%) for HS without screw and sheath. Staphylococcus aureus for the BPTB group and Staphylococcus epidermidis in both hamstring groups were the most common infecting organisms. HS with screw and sheath had a higher likelihood of 90-day deep infection compared with BPTB ACLR (odds ratio [OR], 2.87; 95% CI, 1.29-6.38). We failed to observe a difference for HS without screw and sheath compared with BPTB ACLR (OR, 1.23; 95% CI, 0.54-2.77). The NNE was 330 and 2701 for HS with and HS without screw and sheath, respectively. CONCLUSION Although the overall infection rate after ACLR is low, the higher likelihood of infections when sheath and screw combined are used for tibial fixation of a hamstring autograft ACLR should be a consideration when this procedure is performed.

中文翻译:

Ham绳肌腱前交叉韧带重建术后,螺钉和鞘胫骨固定与深部感染的可能性更高。

背景技术自体-绳肌前交叉韧带重建术(ACLR)与自体-骨腱-骨(BPTB)相比具有更高的感染率。所观察到的差异的原因尚不清楚,值得调查。目的使用BPTB自体移植物作为参考组,评估胫骨固定(有或没有鞘和螺钉构造)与绳肌自体移植ACLR后深层感染风险之间的关系。研究设计队列研究;证据等级,3。方法使用Kaiser Permanente ACLR注册中心,我们鉴定了所有自发的单侧,单侧单束ACLR,其均自体植入了BPTB或绳肌(2008年1月1日至2016年9月30日)。暴露人群包括:(1)BPTB ACLR,(2)使用螺钉和鞘管结构进行胫骨固定的绳肌ACLR(HS,使用螺钉和鞘管),以及(3)使用螺钉和鞘管结构进行胫骨固定的方法,使用ham绳肌ACLR(不使用螺钉和护套的HS)。我们使用逻辑回归分析以BPTB自体移植作为参考组并调整了年龄,性别和体重指数,评估了90天术后深部感染的可能性。计算了需要暴露的数量(NNE)。结果在15671个ACLR中,有6745个(43.0%)使用了BPTB移植物,2852个(18.2%)使用了带螺钉和胫骨胫骨固定的HS,而6074个(38.8%)使用了无螺钉和鞘管胫骨固定的HS。有90天的深层感染38例(0.2%):BPTB 11例(0.2%),带螺钉和鞘的HS感染14例(0.5%),不带螺钉和鞘的HS感染13例(0.2%)。BPTB组的金黄色葡萄球菌和两个绳肌组的表皮葡萄球菌是最常见的感染生物。与BPTB ACLR相比,带有螺钉和护套的HS发生深部感染90天的可能性更高(赔率[OR]为2.87; 95%CI为1.29-6.38)。我们没有观察到没有螺钉和护套的HS与BPTB ACLR的差异(OR为1.23; 95%CI为0.54-2.77)。HS带螺丝和护套的NNE分别为330和2701。结论尽管ACLR术后的总体感染率较低,但在进行此过程时应考虑使用鞘管螺钉联合胫骨固定auto绳肌自体移植ACLR的可能性更高。与BPTB ACLR相比,带钉和鞘的HS深层感染90天的可能性更高(优势比[OR]为2.87; 95%CI为1.29-6.38)。我们没有观察到没有螺钉和护套的HS与BPTB ACLR的差异(OR为1.23; 95%CI为0.54-2.77)。HS带螺丝和护套的NNE分别为330和2701。结论尽管ACLR术后的总体感染率较低,但在进行此过程时应考虑使用鞘管螺钉联合胫骨固定auto绳肌自体移植ACLR的可能性更高。与BPTB ACLR相比,带钉和鞘的HS深层感染90天的可能性更高(优势比[OR]为2.87; 95%CI为1.29-6.38)。我们没有观察到没有螺钉和护套的HS与BPTB ACLR的差异(OR为1.23; 95%CI为0.54-2.77)。HS带螺丝和护套的NNE分别为330和2701。结论尽管ACLR术后的总体感染率较低,但在进行此过程时应考虑使用鞘管螺钉联合胫骨固定auto绳肌自体移植ACLR的可能性更高。带和不带螺钉和护套的HS的NNE分别为330和2701。结论尽管ACLR术后的总体感染率较低,但在进行此过程时应考虑使用鞘管螺钉联合胫骨固定auto绳肌自体移植ACLR的可能性更高。带和不带螺钉和护套的HS的NNE分别为330和2701。结论尽管ACLR术后的总体感染率较低,但在进行此过程时应考虑使用鞘管螺钉联合胫骨固定auto绳肌自体移植ACLR的可能性更高。
更新日期:2020-03-16
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