The role of magnetic resonance imaging (MRI) in assessment of ACL graft failure

Adalany, Mohamed Ali El; Sakarana, Amal Abdel Sattar; Fattah, Sherif Abdel

doi:10.1016/j.ejrnm.2017.06.009

Cited by 4 publications

(11 citation statements)

References 19 publications

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“…Partial tears of an ACL graft may appear as areas of increased signal intensity within the graft tissue with some residual intact fibers on T2-weighted images (18) Graft tear was the commonest finding in the included Cases, and the complete tear was more predominant than partial tear. These results are in accordance with El Adalany et al, (17) , Khedr et al, (16) and Madeira et al, (19) . Other researches as Galal et al, (5) , found that partial tear was more frequent than the complete one.…”

Section: Discussionsupporting

confidence: 92%

“…There were significant positive correlation between graft SI and discontinuity in the present study. In contrary to these results, El Adalany et al, (17) ; Kamel & Darwish (21) ; Khedr et al, (16) ; and Min et al, (22) who stated that the increased signal intensity of the graft was considered as the least reliable sign in the discrimination between intact and torn grafts, or partially and completely torn grafts.…”

Section: Discussionmentioning

confidence: 91%

“…Regarding the MRI findings, we considered the graft to be disrupted completely when there was absence of intact fibers, or partially torn when some fibers remain intact in the thin section sagittal and coronal scans (5,16) . Hyper-intensities within the graft on T2-weighted images that may be equal to the fluid with discontinuity of the fibers and graft thinning or thickening were considered as signs of graft tear either partial or full thickness tear (17) . Partial tears of an ACL graft may appear as areas of increased signal intensity within the graft tissue with some residual intact fibers on T2-weighted images (18) Graft tear was the commonest finding in the included Cases, and the complete tear was more predominant than partial tear.…”

Section: Discussionmentioning

confidence: 99%

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Role of Magnetic Resonance Imaging in Evaluation of Anterior Cruciate ligament Graft

Hasan

Ibrahim

Abdel-Baki

2020

Minia Journal of Medical Research

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MR imaging plays an important role in evaluating the integrity of the ACL graft, as well as in diagnosing complications associated with ACL reconstruction. Patient & Methods: This study included 34 patients aged from 17 to 47 years (mean 29 years). MRI study assessed: pattern of the ACL graft (discontinuity, SI, orientation), presence or absence of graft impingement, ganglion cyst, arthrofibrosis, and hardware malposition. Associated knee injuries were also evaluated. Results: graft tear was the commonest finding (71%) in the included Cases. There was significant positive correlation between SI and orientation of the grafts with their tear. The MRI study revealed graft complications in 59% of cases: impingement in 12, Ganglion Cyst in 6, cyclops in 4, and hardware mal-position (loose femoral screw) in 2. Images of impingement cases showed increasing in the graft SI, lax orientation, and tear (partial or complete). Regarding ganglion cyst cases, all grafts had increased SI and most of them were lax and partially torn. Grafts in cyclops cases were normal SI, normal orientation, and intact. Graft discontinuity correlated with impingement positively, with ganglion cyst and cyclops negatively. Conclusion: MRI represents an important tool for assessment of the complication following ACL graft reconstruction. The most frequent complication was Graft tear followed by impingement. Graft SI and orientation is very helpful parameters in diagnosis of graft complications.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 91%

Section: Discussionmentioning

confidence: 99%

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Role of Magnetic Resonance Imaging in Evaluation of Anterior Cruciate ligament Graft

Hasan

Ibrahim

Abdel-Baki

2020

Minia Journal of Medical Research

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“…In addition, partial tears involving mild amount of tissue may not be visualized or differentiated from intact grafts by this imaging modality [52], although this may also be the case with macroscopic evaluation. MRI sensitivity and sensibility to detect graft failure was reported to be of 60 to 97.8 and 70 to 87%, respectively, in clinical settings [53,54]. MRI is nevertheless an appealing tool in this field and deserves its place in experimental studies on ACL reconstruction in rats as it is in some rat models of posttraumatic osteoarthritis (OA) [55].…”

Section: Discussionmentioning

confidence: 99%

Remnants-preserving ACL reconstruction using direct tendinous graft fixation: a new rat model

et al. 2022

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Background Anterior cruciate ligament (ACL) repair techniques are new emerging strategies prevailing, in selected cases, over standard reconstruction of the ACL with excision of its remnants. Mid-substance ACL tears represent a challenge for ACL repair techniques, and remnants-preserving ACL reconstruction (rp-ACLR) using an autograft remains the recommended treatment in this situation. However, morbidity associated with the autograft harvesting prompts the need for alternative surgical strategies based on the use of synthetic scaffolds. Relevant small animal models of mid-substance tears with ACL remnants preservation and reconstruction are necessary to establish the preliminary proof of concept of these new strategies. Methods A rat model of rp-ACLR using a tendinous autograft after complete mid-substance ACL transection was established. Twelve weeks following surgery, clinical outcomes and knee joints were assessed through visual gait analysis, Lachman tests, thigh perimeter measurements, magnetic resonance imaging, micro-computed tomography, and histology, to evaluate the morbidity of the procedure, accuracy of bone tunnel positioning, ACL remnants fate, osteoarthritis, and autograft bony integration. Results were compared with those obtained with isolated ACL transection without reconstruction and to right non-operated knees. Results and discussion Most operated animals were weight-bearing the day following surgery, and no adverse inflammatory reaction has been observed for the whole duration of the study. Autograft fixation with cortical screws provided effective graft anchorage until sacrifice. Healing of the transected ACL was not observed in the animals in which no graft reconstruction was performed. rp-ACLR was associated with a reduced degeneration of the ACL remnants (p = 0.004) and cartilages (p = 0.0437). Joint effusion and synovitis were significantly lower in the reconstructed group compared to the transected ACL group (p = 0.004). Most of the bone tunnel apertures were anatomically positioned in the coronal and/or sagittal plane. The most deviated bone tunnel apertures were the tibial ones, located in median less than 1 mm posteriorly to anatomical ACL footprint center. Conclusion This study presents a cost-effective, new relevant and objective rat model associated with low morbidity for the preliminary study of bio-implantable materials designed for remnants-preserving ACL surgery after mid-substance ACL tear.

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“…It is commonly injured structure occur in noncontact conditions during rapid change of direction. It is supported by vast network of muscles and ligaments, from the previous studies it was found that the injury (tear) to anterior cruciate ligament is most common and frequent as compare to other ligaments of the knee joint (3) . The injury of Anterior cruciate ligament (ACL) most commonly occur during sports in adolescents and young adults and also occurs in road traffic accidents that involves the sudden stop or changing in direction rapidly, in jumping movements and landing such in outdoor sports activities just like playing basketball, football and skiing and fast running.…”

Section: Introductionmentioning

confidence: 99%

Role of Mri in Evaluation of Anterior Cruciate Ligament Tear

2021

JHMN

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sports like basketball, soccer, baseball skiing. Female athletes are at higher risk of having ACL tear as compare to males. ACL tear should be treated properly because injury to it can cause a serious clinical conditions like it can cause the immobilization of the subject until it is treated properly. For the accurate treatment there should be most advanced and highly sensitive diagnostic approach which aids in the addition of accurate information regarding the location, grading and the condition of ACL tear either there is complete or partial tear. Magnetic resonance imaging modality can diagnosis ACL tears with a high accuracy with the help of specific protocols which are more sensitive to soft tissue injuries.

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The role of magnetic resonance imaging (MRI) in assessment of ACL graft failure

Cited by 4 publications

References 19 publications

Role of Magnetic Resonance Imaging in Evaluation of Anterior Cruciate ligament Graft

Role of Magnetic Resonance Imaging in Evaluation of Anterior Cruciate ligament Graft

Remnants-preserving ACL reconstruction using direct tendinous graft fixation: a new rat model

Role of Mri in Evaluation of Anterior Cruciate Ligament Tear

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