MR Imaging of Anterior Cruciate Ligament Reconstruction Graft

Schatz, Julie; Potter, Hollis G.; Rodeo, Scott A.; Hannafin, Jo A.; Wickiewicz, Thomas L.

doi:10.2214/ajr.175.4.1751091

Cited by 63 publications

(54 citation statements)

References 12 publications

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“…GSI in the early postreconstruction period has been well studied, however few studies evaluated the GSI at midor long-term follow-up (2,4,17). In short-term studies, Iran J Radiol.…”

Section: Discussionmentioning

confidence: 99%

The Effect of Anterior Cruciate Ligament Reconstruction Technique on Graft Signal Intensity at Mid-Term Follow-Up

2018

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Background: Anterior cruciate ligament reconstruction (ACL-R) technique affects graft positioning. However, how ACL graft positioning affects graft signal intensity (GSI) is yet unknown. The aim of our study was to find out if ACL-R technique affects GSI at mid-term follow-up. Methods: A total of 50 patients were included in the study. They underwent 3.0 T MRI of the knee 4-7 years after ACL-R. Patients were divided into two groups according to ACL-R technique (transtibial technique with RIGIDfix fixation [group 1] and anteromedial portal technique with Endobutton fixation [group 2]). GSI, graft failure, graft impingement and graft position were assessed. GSI characteristics were evaluated on proton density turbo spin echo fat saturation images. Graft was divided into two portionsintraarticular portion (IAP) and intraosseous portion (IOP). Intraosseous portion was further divided into two parts -femoral (fIOP) and tibial (tIOP). Results: Graft failure was identified in 12.0%. Only 9.8% showed low signal intensity of the entire graft course. Group 2 showed higher rates of increased graft signal intensity (IGSI) of the IAP and fIOP. Patients with IGSI of the IAP showed more horizontal position of the coronal tibial tunnel. Patients with IGSI of the fIOP showed more horizontal position of the coronal femoral tunnel. Patients with IGSI of the tIOP showed more horizontal position of the sagittal tibial tunnel. Conclusions: IGSI can be seen in the majority of patients after ACL-R at mid-term follow-up. Our study demonstrates that graft tunnel positioning and graft fixation device may influence GSI.

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“…GSI in the early postreconstruction period has been well studied, however few studies evaluated the GSI at midor long-term follow-up (2,4,17). In short-term studies, Iran J Radiol.…”

Section: Discussionmentioning

confidence: 99%

The Effect of Anterior Cruciate Ligament Reconstruction Technique on Graft Signal Intensity at Mid-Term Follow-Up

2018

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“…Las indicaciones más comunes para la evaluación de las reconstrucciones del LCA son: fracaso de la reconstrucción del LCA para estabilizar la rodilla, trauma recurrente posterior a la cirugía, disminución o pérdida de la extensión de la rodilla, planeación prequirúrgica para la revisión de falla de la reconstrucción del LCA, evaluación de la integridad del menisco y del cartílago, localización y tamaño del túnel (7) .…”

Section: Discussionunclassified

“…La posición adecuada del túnel tibial es importante para prevenir el pinzamiento del injerto (12,16) . Las complicaciones asociadas a reconstrucción del LCA se estiman en un 10-25% (2) e incluyen: posición inapropiada del túnel, fracaso del material quirúrgico, fracaso del tapón de hueso, fractura rotuliana (en la zona donante), fracaso del tendón rotuliano, rotura del injerto, pinzamiento del injerto, artrofibrosis anterior ("lesión en cíclope") e infección en el postoperatorio (4,7,8,17) .…”

Section: Aspectos Quirúrgicos Generalesunclassified

“…La RM se ha utilizado como un método valioso para la evaluación de la integridad de la reconstrucción del LCA con una sensibilidad del 100%, especificidad del 86% y seguridad diagnóstica del 86.5% para la RM convencional y 100% de sensibilidad con 81-100% de especificidad cuando se realiza artrorresonancia (2,(7)(8)(9) . Posterior a la cirugía, el reconocimiento de la apariencia normal y presencia de anormalidades en las estructuras de la rodilla es un factor esencial para la evaluación por este método diagnóstico (8) .…”

Section: Introductionunclassified

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Imagen por resonancia magnética de las complicaciones postquirúrgicas asociadas a la reconstrucción del ligamento cruzado anterior

2011

Rev. chil. radiol.

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“…Primary signs include graft signal abnormalities including; increased signal on T2-weighted sequences ( Figures 3A and 3B), graft thickness, and fiber discontinuity. Secondary signs include anterior tibial translation and an uncovered posterior horn of the lateral meniscus [21,22].…”

Section: Complications Leading To Laxity Graft Tearmentioning

confidence: 99%

Evaluation of anterior cruciate ligament repair using magnetic resonance imaging

Kamel¹,

Darwish²

2014

Med Imaging Radiol

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Purpose: The purpose of this study was to review the MR imaging findings after anterior cruicate ligament (ACL) reconstruction and to study the value of MRI in assessment of ACL reconstrction using arthroscopy as a gold standnad. Material and methods: Two radiologists reviewed MRI findings of 32 patients post ACL reconstrction retrospectively. Evaluation of MRI findings includes, primary & sceondary sings of graft failure and ACL graft reconstrcyin complications. Arthroscopy study was performed within 15-20 days from MR examination. Our results of MRI were comapred to the result of arthroscopy. The kappa values for interobserver variability were calculated. Results: A total of 32 male patients were studied, with a mean age of 27 years, Arthroscopy revealed 13 patients with full-thickness ACL graft tears, 8 partial-thickness ACL graft tears and 11 intact ACL grafts. Graft fiber continuty and 100% graft thickness were most valuableprimary sign in diagnosis of intact graft Complete discontinuous graft was valuable in diagnosis of full-thickness tear. Focal graft thinning was valuable in diagnosis of partial graft tear. Anterior tibial translation and uncovered posterior horn lateral meniscus are secondary sings that helped in differentiating partial or full thickness from intact graft. Conclusion: We conclude that MRI imaging is a reliable tool for the assessment of ACL reconstruction outcome.

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MR Imaging of Anterior Cruciate Ligament Reconstruction Graft

Abstract: Full-thickness anterior cruciate ligament graft tear can be differentiated from partial-thickness tear or intact graft by evaluating for graft fiber continuity (coronal plane), complete graft discontinuity (coronal plane), and graft thickness (coronal or sagittal plane).

Cited by 63 publications

References 12 publications

The Effect of Anterior Cruciate Ligament Reconstruction Technique on Graft Signal Intensity at Mid-Term Follow-Up

The Effect of Anterior Cruciate Ligament Reconstruction Technique on Graft Signal Intensity at Mid-Term Follow-Up

Imagen por resonancia magnética de las complicaciones postquirúrgicas asociadas a la reconstrucción del ligamento cruzado anterior

Evaluation of anterior cruciate ligament repair using magnetic resonance imaging

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