scholarly journals A Spectrum of MRI Findings in the Knee Joint: A Retrospective Study of Selected Population in South-South Nigeria

2021 ◽  
Vol 7 (2) ◽  
pp. 5-9
Author(s):  
Okechukwu Felix Erondu ◽  
◽  
Nonyelum Aniebo ◽  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Knee Joint ◽  
Cruciate Ligament ◽  
Knee Injuries ◽  
Quadriceps Tendon ◽  
Synovial Chondromatosis ◽  
Meniscal Tears ◽  
Resonance Imaging ◽  
Mri Findings

The knee is a very important joint and injuries affecting it may cause significant disability and discomfort to the patient. Despite a variety of methods available to assess injuries of the knee joint, Magnetic Resonance Imaging (MRI) continues to play a major role. This study evaluated the spectrum of MRI findings in a relatively low resource environment, with limited access to MRI modality. The outcome should justify further investment in MRI services in this locality. The study involves retrospective analysis of MRI reports of 198 clinically symptomatic patients referred for imaging in a Port-Harcourt. All examinations were performed using GE BRIVO MR 235 machine with 0.35 Tesla field strength in a well-coupled standard knee coil. All images were analyzed for normality or otherwise and radiological reports generated by competent radiologists. The most common findings are traumatic in origin, notably cruciate ligament tears (37.37%) and meniscal tears (33.3%) as well as quadriceps tendon tears (3.03%). The medial meniscus and anterior cruciate ligaments were more frequently involved. Furthermore, patients in the 3rd and 4th decade of life were more commonly involved, with a male preponderance. The less common findings of Synovial chondromatosis, cyst-like lesions, tumors and loose bodies, all buttress the importance of routine MRI in atraumatic cases. The spectrum of MRI findings in this study is a reflection of growing interest and confidence in MRI of the diseased knee joint in our environment. The outcome would be a justification for future investments in MRI. Keywords: Magnetic Resonance Imaging, knee injuries, tibial meniscal tears, incidental findings

scholarly journals Magnetic Resonance Imaging in the Diagnosis of Traumatic Injuries Knee Joint

2017 ◽  
pp. 114-119
Author(s):  
M. A. Abdusharipov ◽  
G. D. Matrizayeva ◽  
D. K. Abdullayeva ◽  
D. G. Khudayberganov
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Knee Joint ◽  
Cruciate Ligament ◽  
False Negative ◽  
Lateral Meniscus ◽  
Knee Injuries ◽  
Knee Joints ◽  
Resonance Imaging ◽  
Diagnostic Arthroscopy

Purpose: verification of reliability of MRI signs of damage to the structures of the knee joint in comparison with the data of arthroscopy knee joints.Materials and methods. 59 patients were examined (59 knee joints: 41 right (69.5%) and 18 left (30.5%)) with various knee injuries, aged 17 to 49 years (mean age 33.6 years). All patients underwent magnetic resonance imaging and medical diagnostic arthroscopy.Results. The sensitivity of the MRI to the diagnosis of meniscus ruptures was highest: 91.7% for the lateral meniscus and 95.4% for the medial meniscus. At the same time, in the diagnosis of anterior cruciate ligament ruptures, the MRI examination does not have such a high sensitivity (88.2%). In addition to the above features, MRI provides the ability to determine the damage to bone and cartilage structures. And also according to MRT it is possible to determine the plan of surgical intervention for tears of meniscuses and cruciate ligaments.Conclusion. The obtained data confirm sufficient efficiency of MRI for diagnostics of damages of knee joint structures. Further improvement of methods and increase in experience of interpretation of images will probably reduce amount of false positive and false-negative results in the future.

Magnetic resonance imaging of degenerative changes of the posterior cruciate ligament

2016 ◽  
Vol 58 (3) ◽  
pp. 338-343 ◽  
Author(s):  
Ferdinando Draghi ◽  
Chandra Bortolotto ◽  
Davide Renato Coscia ◽  
Mario Canepari ◽  
Salvatore Gitto
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Posterior Cruciate Ligament ◽  
Signal Intensity ◽  
Cruciate Ligament ◽  
Degenerative Changes ◽  
Resonance Imaging ◽  
Mucoid Degeneration ◽  
Mri Findings ◽  
Magnetic Resonance Imaging Mri

Background Mucoid degeneration and ganglia reflect a continuum of degenerative changes within the posterior cruciate ligament (PCL). Purpose To assess the prevalence of and radiologists’ familiarity with PCL mucoid degeneration and ganglia. Material and Methods Knee magnetic resonance imaging (MRI) from July 2013 to June 2015, excluding patients who had a preceding trauma or MRI findings indicative of a prior injury, were retrospectively reviewed, with the specific request to assess degenerative changes of the PCL, by the same musculoskeletal radiologists who previously reported these examinations, and one fellow. Results A total of 692 patients entered this study. The radiologists and the fellow together identified mucoid degeneration in 34 patients (4.9%), ganglia in 14 patients (2.0%), and both in four patients (0.6%). Several patterns of PCL mucoid degeneration were identified: diffuse thickening in seven patients, partial thickening in 16 (four associated with a ganglion), longitudinal intraligamentous PCL signal-intensity abnormalities resembling a “tram track” in 15. In all cases there was increased signal intensity on fluid-sensitive sequences. In the previous reports, only three cases of PCL mucoid degeneration out of 38 (7.9%) were described, with intraligamentous PCL signal-intensity abnormalities. In the reports of the patients with degeneration and ganglia, only ganglia were described. In the previous reports, ganglia were correctly diagnosed. Conclusion Mucoid degeneration of the PCL is much more common than previously assumed and is underestimated by radiologists.

The Role of Diffusion-weighted Magnetic Resonance Imaging in the Evaluation of Anterior Cruciate and Posterior Cruciate Ligament Tears

2019 ◽  
Vol 1 ◽  
pp. 97-100
Author(s):  
Vijinder Arora ◽  
Sonali Malik ◽  
Kunwarpal Singh
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Predictive Value ◽  
Cruciate Ligament ◽  
Resonance Imaging ◽  
Mri Findings ◽  
Conventional Mri ◽  
Anterior Cruciate

Objective: The objective of our study was to determine the role of diffusion-weighted (DW) magnetic resonance imaging (MRI) in diagnosing and differentiating between complete and partial anterior cruciate ligament (ACL) and posterior cruciate ligament (PCL) tears and to compare it with conventional MRI sequences. Materials and Methods: We conducted a prospective study for a period of 2 years from October 2017 to October 2019 on 30 patients with clinically suspected ACL/PCL injuries of the knee. MRI of the knee joint was performed using conventional, and DW sequences and the findings on both the sequences were assessed independently and compared with the intraoperative or follow-up MRI findings. Results: As per operative and follow-up MRI findings, the sensitivity and specificity of conventional MRI were 60% and 33.33% with a positive and negative predictive value of 47.37% and 45.45%, respectively. On the other hand, the sensitivity and specificity of DW MRI were 70.00% and 33.33% with a positive and negative predictive value of 51.22% and 52.13%, respectively. P = 0.417 was statistically not significant. Conclusion: According to our study, adding DW sequence to conventional MR sequences yielded comparable results in diagnosis and differentiation between complete and partial ACL and PCL tears.

Magnetic resonance imaging for detection of late meniscal tears in dogs following tibial tuberosity advancement for treatment of cranial cruciate ligament injury

2014 ◽  
Vol 27 (02) ◽  
pp. 141-146 ◽  
Author(s):  
C. R. Lamb ◽  
M. S. Tivers ◽  
A. Li ◽  
F. Taylor-Brown
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Mr Imaging ◽  
Cruciate Ligament ◽  
Meniscal Tear ◽  
Ligament Injury ◽  
Meniscal Tears ◽  
Resonance Imaging ◽  
Mr Images ◽  
Cranial Cruciate Ligament

SummaryTo document the use of and to estimate the accuracy of magnetic resonance (MR) imaging for detection of late meniscal tears in dogs with cranial cruciate ligament injury treated with tibial tuberosity advancement (TTA).Medical records of dogs that had TTA followed by stifle MR imaging for suspected meniscal tear and subsequent arthrotomy were reviewed retrospectively. Magnetic resonance images were reviewed independently by an observer blinded to clinical information who classified menisci as torn, abnormal but intact, or normal. Magnetic resonance and surgical findings were compared.Eight stifles from large breed dogs were included. Six stifles had a medial meniscal tear identified in MR images and later confirmed surgically. In the remaining two stifles, the menisci appeared intact in MR images and no tear was identified at subsequent arthrotomy. Lateral menisci in all stifles appeared intact in MR images and were considered normal at surgery. Susceptibility artefacts associated with TTA implants were present in all images but did not adversely affect interpretation of intra-articular structures.Magnetic resonance imaging appears to be accurate for diagnosis of late meniscal tears. Artefacts associated with TTA implants did not prevent evaluation of critical intra-articular structures. Further investigation with MR imaging should be considered when late meniscal tear is suspected following TTA.

scholarly journals Diagnostic Accuracy of Magnetic Resonance Imaging in the Detection of Type and Location of Meniscus Tears: Comparison with Arthroscopic Findings

2021 ◽  
Vol 10 (4) ◽  
pp. 606
Author(s):  
Seong Hwan Kim ◽  
Han-Jun Lee ◽  
Ye-Hoon Jang ◽  
Kwang-Jin Chun ◽  
Yong-Beom Park
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Diagnostic Accuracy ◽  
Medial Meniscus ◽  
Cruciate Ligament ◽  
Lateral Meniscus ◽  
Meniscal Tears ◽  
Resonance Imaging ◽  
Arthroscopic Findings ◽  
Meniscus Tears

Magnetic resonance imaging (MRI) has been widely used for the diagnosis of meniscal tears, but its diagnostic accuracy, depending on the type and location, has not been well investigated. We aimed to evaluate the diagnostic accuracy of MRI by comparing MRI and arthroscopic findings. Preoperative 3.0-T MRI and arthroscopic findings from 2005 to 2018 were reviewed to determine the presence, type, and location of meniscus tears. In addition, subgroup analysis was performed according to anterior cruciate ligament (ACL) injury. The exclusion criteria were as follows: (1) Inflammatory arthritis, (2) other ligament injuries, (3) inability to classify meniscal tears due to degenerative arthritis, (4) over 90 days from MRI to surgery, and (5) incomplete data. Of the 2998 eligible patients, 544 were finally included. The sensitivity and specificity of MRI in determining medial and lateral meniscus tears were 91.8% and 79.9%, and 80.8% and 85.4%, respectively. The accuracy of MRI in the ACL-injured group was lower than that in the ACL-intact group (medial meniscus: 81.7% vs. 88.1%, p = 0.041; 72.9% vs. lateral meniscus: 88.0%, p < 0.001). MRI accuracy was low for the longitudinal tears of the posterior horn of the medial meniscus in the ACL-injured group. MRI could be a diagnostic tool for meniscus tears, but has limited accuracy in their classification of the type and location. Hence, care should be taken during arthroscopic assessment of ACL-injured patients due to low diagnostic accuracy of preoperative MRI.

scholarly journals Magnetic Resonance Imaging Evaluation of Menisci and Cruciate Ligamentous Injuries of the Knee with Arthroscopic Correlation

2017 ◽  
Vol 13 (1) ◽  
pp. 95-98
Author(s):  
Mohammed Mominul Hoque Sarker ◽  
Md Taharul Alam ◽  
Syed Zoherul Alam ◽  
Mohammad Shafiqul Alam ◽  
AKM Sharifur Rahman ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Predictive Value ◽  
Spin Echo ◽  
Cruciate Ligament ◽  
Knee Injuries ◽  
Resonance Imaging ◽  
Non Invasive ◽  
Arthroscopic Examination ◽  
Sensitivity Specificity

Introduction: Now a days Magnetic Resonance Imaging (MRI) has become the primary investigation for the assessment of knee injuries. Non-invasive MRI has the ability of high resolution and accuracy to diagnose the knee injuries and it can be the alternative to diagnostic arthroscopy. Objective: To validate MRI evaluation in the assessment of cruciate ligamentous and meniscal injuries of the knee joint and compare with arthroscopic findings. Materials and Methods: This cross sectional study was conducted at Combined Military Hospital, Dhaka from 01 January 2013 to 30 June 2013 where sixty patients who had the history of twisting injuries to the knee were selected in this study. Along with injury history they were strongly suspected to have meniscal and/or cruciate ligamentous tears. Then they were examined by open MRI machine 0.4 tesla, Hitachi, made in Japan. A Quadrature (QD) extremity coil was used in this study. Spin echo T1, fast spin echo T2 and Short Tau Inversion Recovery (STIR) sequences were taken in direct coronal, sagittal and axial planes with 4mm slice thickness. Data were recorded and statistical analysis was done by SPSS version 20. Results: Total 60 patients underwent MRI and Arthroscopic examination. The final diagnosis was established by direct findings at Arthroscopic examination. The Sensitivity, Specificity and Accuracy of Magnetic Resonance Imaging in the diagnosis of cruciate ligamentous and meniscal injuries as compared to arthroscopy were Anterior Cruciate Ligament (ACL): 96.88% sensitivity, 96.43% specificity, 96.66% accuracy, 96.87% Positive predictive value (PPV) and 96.42% Negative predictive value (NPV); Medial Meniscus (MM): 96.43% sensitivity, 98.87% specificity,96.66% accuracy, 96.42% PPV and 98.88% NPV; for Lateral Meniscus (LM): 80.00% sensitivity, 97.77% specificity, 93.33% accuracy, 92.30% PPV and 93.62% NPV. Conclusion: As a non-invasive diagnostic modality Magnetic Resonance Imaging is very useful and having high sensitivity, specificity and accuracy in the detection of meniscal and cruciate ligament injuries. To prevent unwanted arthroscopies MRI should be done in every patient of suspected cruciate ligamentous and meniscal injury before doing arthroscopy. Journal of Armed Forces Medical College Bangladesh Vol.13(1) 2017: 95-98

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