Comparison of magnetic resonance imaging for patients with acute and chronic anterior cruciate ligament tears

Xu, Baojun; Zhang, Hanyuan; Li, Bo; Wang, Weichao

doi:10.1097/md.0000000000010001

Cited by 9 publications

(4 citation statements)

References 24 publications

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“…. Study conducted by Bix Xu et al 13 on 377 patient ,160 cases underwent MRI within 4 weeks with an average of 1.6 weeks after tear and 217 cases underwent MRI after one month with an average of 9 week similar to our study.…”

Section: Observationsupporting

confidence: 88%

MRI Evaluation of Meniscal and Ligamentous Injuries of Knee

Mishra¹

2020

jmscr

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Aim & Objectives: To Study the spectrum of MRI findings in all consecutive cases of knee trauma and To evaluate the types and degree of various ligamentous and meniscal injuries by MRI. Result: patient between 21-30 years are the most common group having knee injury and ACL is the most common ligaments to get injured. Conclusion: MRI is usefull in knee joint injury and to avoid unnecessary interventions.

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Section: Observationsupporting

confidence: 88%

MRI Evaluation of Meniscal and Ligamentous Injuries of Knee

Mishra¹

2020

jmscr

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“…Twelve patients with acute or chronic PCL tear were enrolled prospectively in a consecutive series over the span of 4 years in the current study (age: 28–52 years, 10 M/2 F, 7 right/5 left, injury occurred 2 weeks to 15 years prior to imaging). This study included one patient with an acute injury (less than 6 weeks from ligament injury (Xu et al, 2018)) and five patients with chronic injuries (greater than 6 weeks from ligament injury). All patients had a clinical examination and bilateral posterior knee stress radiographs which had a minimum of 8 mm of increased posterior tibial translation compared to the uninjured contralateral knee (Jackman et al, 2008) documenting a PCL tear.…”

Section: Methodsmentioning

confidence: 99%

Quantitative mapping of acute and chronic PCL pathology with 3 T MRI: a prospectively enrolled patient cohort

et al. 2019

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Background The diagnosis of incomplete acute and chronic posterior cruciate ligament (PCL) tears can be challenging with conventional magnetic resonance (MR) imaging, particularly for injuries in which the ligament appears continuous as occurs with chronic PCL tears that have scarred in continuity. Quantitative mapping from MR imaging may provide additional useful diagnostic information in these cases. The purpose of this study was to assess the feasibility of quantifying transverse relaxation time (T2) mapping values at 3 Tesla (T) in a prospectively enrolled patient cohort with chronic PCL tears. Methods Twelve subjects with acute or chronic functionally torn PCL, confirmed on clinical exam and posterior knee stress radiographs (with 8 mm or more of increased posterior tibial translation), were enrolled prospectively over a span of 4 years (age: 28–52 years, injury occurred 2 weeks to 15 years prior). Unilateral knee MR images were acquired at 3 T, including a multi-echo spin-echo T2 mapping scan in the sagittal plane. For the six subjects with a continuous PCL on MR imaging the PCL was manually segmented and divided into proximal, mid and distal thirds. Summary statistics for T2 values in each third of the ligament were compiled. Results Across the six patient subjects with a continuous ligament, the mean T2 for the entire PCL was 36 ± 9 ms, with the highest T2 values found in the proximal third (proximal: 41 ms, mid 30 ms, distal 37 ms). The T2 values for the entire PCL and for the proximal third subregion were higher than those recently published for asymptomatic volunteers (entire posterior cruciate ligament: 31 ± 5 ms, proximal: 30 ms, mid: 29 ms, distal: 37 ms) with similar methodology. Conclusion Mean T2 values were quantified for acute and chronic PCL tears in this prospectively enrolled patient cohort and were higher than those reported for asymptomatic volunteers. This novel approach of using quantitative mapping to highlight injured areas of the posterior cruciate ligament has potential to provide additional diagnostic information in the challenging case of a suspected posterior cruciate ligament tear which appears continuous, including chronic tears that have scarred in continuity and may appear intact on conventional magnetic resonance imaging.

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“…In addition, the interval between injury and presentation was noted. An ACL injury was considered acute if diagnosed within 6 weeks or less from injury and chronic if diagnosed later than 6 weeks [ 9 ]. The pre-operative and six-month post-operative international knee documentation committee (IKDC) scores of the injured knee in the register were also noted as well as the complications reported by the patients within six months of post-operative follow-up care.…”

Section: Methodsmentioning

confidence: 99%

Patterns of presentation and early treatment outcomes of anterior cruciate ligament injury at the National Orthopaedic Hospital, Lagos, Nigeria: a retrospective cross-sectional study

Babalola¹,

Egberongbe²,

Oluwadiya³

2022

Pan Afr Med J

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The purpose of this study was to determine the patterns of presentation and early treatment outcomes of anterior cruciate ligament tears at the National Orthopaedic Hospital, Lagos, Nigeria. This was a retrospective cross-sectional study in which the details of all anterior cruciate ligament injuries seen from January 2014 to December 2018 in our facility were noted. The bio-demographic details of the patients were noted as well as the side of the injury, mechanism of injury, type of sporting activity patient was engaged in at the time of injury and the early outcome of treatment of the patients were noted. A total of 19,707 new orthopaedic and musculoskeletal trauma cases were seen in the period. The overall hospital period prevalence rate of anterior cruciate ligament injury in the period was 3.6 per 1000 patients with a gender-specific prevalence rates of 5.7 per 1000 and 1.6 per 1000 for male and female patients respectively. The mean time between injury and presentation was 16 (±21) months with a range of 1-120 months. The commonest aetiology of anterior cruciate ligament injury was non-contact injury during sporting activities. There was a greater involvement of the young and active population in this injury. Sports and road traffic crash related injuries were the commonest injury aetiology in our environment. The early treatment outcomes revealed a significant improvement of the post-operative functional knee scores over the pre-operative functional knee scores.

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Comparison of magnetic resonance imaging for patients with acute and chronic anterior cruciate ligament tears

Cited by 9 publications

References 24 publications

MRI Evaluation of Meniscal and Ligamentous Injuries of Knee

MRI Evaluation of Meniscal and Ligamentous Injuries of Knee

Quantitative mapping of acute and chronic PCL pathology with 3 T MRI: a prospectively enrolled patient cohort

Patterns of presentation and early treatment outcomes of anterior cruciate ligament injury at the National Orthopaedic Hospital, Lagos, Nigeria: a retrospective cross-sectional study

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