scholarly journals Shoulder Arthroscopy in Conjunction With an Open Latarjet Procedure Can Identify Pathology That May Not Be Accounted for With Magnetic Resonance Imaging

2021 ◽  
Author(s):  
Justin J. Ernat ◽  
Dylan R. Rakowski ◽  
Aaron J. Casp ◽  
Simon Lee ◽  
Annalise M. Peebles ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Shoulder Arthroscopy ◽  
Resonance Imaging ◽  
Latarjet Procedure

scholarly journals Correlation of clinical examination, ultrasound, magnetic resonance imaging and arthroscopy as diagnostic tools in shoulder pathology

2020 ◽  
Vol 6 (2) ◽  
pp. 247
Author(s):  
Sondipon Biswas ◽  
Naman Kanodia ◽  
Rajat Tak ◽  
Siddharth Agrawal ◽  
Kiran Shankar Roy
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Rotator Cuff ◽  
Positive Predictive Value ◽  
Negative Predictive Value ◽  
Predictive Value ◽  
Gold Standard ◽  
Shoulder Arthroscopy ◽  
Resonance Imaging ◽  
Shoulder Pathologies

<p class="abstract"><strong>Background:</strong> Shoulder pathologies can cause significant pain, discomfort, and affect the activity of daily living. The aim of this study was to compare the efficacy of clinical examination, ultrasound, magnetic resonance imaging (MRI) with shoulder arthroscopy in diagnosing various shoulder pathologies, considering shoulder arthroscopy as the gold standard tool.</p><p class="abstract"><strong>Methods:</strong> This was a prospective, comparative study conducted over 35 patients, between 18-75 years of age presenting with chronic shoulder pain or instability of more than 2 months duration. All patients were examined clinically, followed by high resolution ultrasound, MRI, arthroscopy of the affected shoulder.<strong></strong></p><p class="abstract"><strong>Results:</strong> The sensitivity and specificity of ultrasonography (USG) for diagnosing full thickness tear was 100% each and for MRI was 88% and 100% respectively. For subacromial impingement USG had sensitivity of 66.67%, specificity of 94.12%, positive predictive value of 50% and negative predictive value of 88.89%. For rotator cuff tear USG had sensitivity of 92.86%, specificity of 50%, positive predictive value of 81.25% and negative predictive value of 75% considering shoulder arthroscopy as gold standard.</p><p class="abstract"><strong>Conclusions:</strong> USG and MRI both are sensitive techniques for diagnosing of rotator cuff pathologies. USG has high accuracy in diagnosing partial thickness tears as compare to MRI. MRI proved to be superior in estimation of site and extent of tear. Considering shoulder arthroscopy as gold standard, it can be reserved for patients with suspicious of USG/MRI findings or those who may need surgical intervention simultaneously.</p>

The Crank Test, the O'Brien Test, and Routine Magnetic Resonance Imaging Scans in the Diagnosis of Labral Tears

2002 ◽  
Vol 30 (6) ◽  
pp. 806-809 ◽  
Author(s):  
William B. Stetson ◽  
Kevin Templin
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Positive Predictive Value ◽  
Negative Predictive Value ◽  
Predictive Value ◽  
Shoulder Arthroscopy ◽  
Rotator Cuff Tears ◽  
Resonance Imaging ◽  
Routine Magnetic Resonance Imaging ◽  
Labral Tears

Background Tears of the superior labrum of the shoulder, anterior to posterior, are difficult to diagnose clinically. Purpose We examined whether the crank or O'Brien tests were reliable tools for detecting glenoid labral tears. Study Design Nonrandomized prospective study. Methods Results of diagnostic shoulder arthroscopy were compared with those of the preoperative tests and magnetic resonance imaging for 65 patients who had symptoms of shoulder pain. Results The crank test result was positive in 29 patients (45%), and the O'Brien test was positive in 41 patients (63%). The crank test had a positive predictive value of 41%, was 56% specific, 46% sensitive, and had a negative predictive value of 61%. The O'Brien test had a positive predictive value of 34%, was 31% specific, 54% sensitive, and had a negative predictive value of 50%. Magnetic resonance imaging had a positive predictive value of 63%, was 92% specific, 42% sensitive, and had a negative predictive value of 83%. Conclusions The O'Brien and crank tests were not sensitive clinical indicators for detecting glenoid labral tears and other tears of the anterior and posterior labrum. Results were often falsely positive for patients with other shoulder conditions, including impingement or rotator cuff tears.

scholarly journals In Vivo Evaluation of the Potential of High-Frequency Ultrasound for Arthroscopic Examination of the Shoulder Joint

Cartilage ◽  
2016 ◽  
Vol 7 (3) ◽  
pp. 248-255 ◽  
Author(s):  
Jani Puhakka ◽  
Isaac O. Afara ◽  
Teemu Paatela ◽  
Markus J. Sormaala ◽  
Matti A. Timonen ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Reflection Coefficient ◽  
Shoulder Joint ◽  
Shoulder Arthroscopy ◽  
Cartilage Defects ◽  
Ultrasound Images ◽  
Resonance Imaging ◽  
Arthroscopic Evaluation

Objective Accurate arthroscopic evaluation of cartilage lesions could significantly improve the outcome of repair surgery. In this study, we investigated for the first time the potential of intra-articular ultrasound as an arthroscopic tool for grading cartilage defects in the human shoulder joint in vivo and compared the outcome to results from arthroscopic evaluation and magnetic resonance imaging findings. Design A total of 26 sites from 9 patients undergoing routine shoulder arthroscopy were quantitatively evaluated with a clinical intravascular (40MHz) ultrasound imaging system, using the regular arthroscopy portals. Reflection coefficient ( R), integrated reflection coefficient ( IRC), apparent integrated backscattering ( AIB), and ultrasound roughness index ( URI) were calculated, and high-resolution ultrasound images were obtained per site. Each site was visually graded according to the International Cartilage Repair Society (ICRS) system. “Ultrasound scores” corresponding to the ICRS system were determined from the ultrasound images. Magnetic resonance imaging was conducted and cartilage integrity at each site was classified into 5 grades (0 = normal, 4 = severely abnormal) by a radiologist. Results R and IRC were lower at sites with damaged cartilage surface ( P = 0.033 and P = 0.043, respectively) and correlated with arthroscopic ICRS grades ( rs = −0.444, P = 0.023 and rs = −0.426, P = 0.03, respectively). Arthroscopic ICRS grades and ultrasound scores were significantly correlated (rs = 0.472, P = 0.015), but no significant correlation was found between magnetic resonance imaging data and other parameters. Conclusion The results suggest that ultrasound arthroscopy could facilitate quantitative clinical appraisal of articular cartilage integrity in the shoulder joint and provide information on cartilage lesion depth and severity for quantitative diagnostics in surgery.

Is the subscapularis normal after the open Latarjet procedure? An isokinetic and magnetic resonance imaging evaluation

2017 ◽  
Vol 26 (10) ◽  
pp. 1775-1781 ◽  
Author(s):  
Alexandre Caubère ◽  
Damien Lami ◽  
Pascal Boileau ◽  
Sébastien Parratte ◽  
Matthieu Ollivier ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Resonance Imaging ◽  
Latarjet Procedure ◽  
Imaging Evaluation ◽  
Magnetic Resonance Imaging Evaluation

scholarly journals Correlation between the Findings of Magnetic Resonance Imaging Shoulder and Shoulder Arthroscopy

2020 ◽  
Author(s):  
Zubair Younis Ringshawl ◽  
Ajaz Ahmad Bhat ◽  
Zahid Bashir ◽  
Munir Farooq ◽  
Mubashir Maqbool Wani
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Rotator Cuff ◽  
Shoulder Pain ◽  
Rotator Cuff Tear ◽  
Shoulder Arthroscopy ◽  
Synovial Chondromatosis ◽  
Resonance Imaging ◽  
Cuff Tear ◽  
Shoulder Pathologies

Introduction: Shoulder pain is a significant cause of decreased functional activity of an individual. The overall prevalence of shoulder pain is 16-26%, which makes it the third most common cause among musculoskeletal complaints. The cause of pain in the shoulder is often difficult to evaluate, and diagnosis is usually ambiguous because physical findings are poorly reproducible. The diagnosis therefore, requires multiple imaging modalities. Therapeutic arthroscopy is “the current gold standard” for diagnosing shoulder pathologies, however the procedure is invasive, needs hospitalisation and anaesthesia. Aim: To correlate the findings of Magnetic Resonance Imaging (MRI) shoulder with the findings of shoulder arthroscopy and subsequently determine sensitivity, specificity and accuracy of MRI in diagnosing shoulder pathologies. Materials and Methods: Forty two patients suffering from chronic shoulder pain for a period of more than six weeks, having symptoms of instability, clinical signs of tear or impingement, or functional limitation of the affected shoulder were included in this study. The patients included were in the age group of 18-80 years. Subsequently, MRI followed by arthroscopy of the shoulder was done and the findings of MRI were compared to that of arthroscopy using kappa statistics. Results: In this study along with rotator cuff tear (26 patients), subacromial bursitis (26 patients), was the other most common shoulder pathology. The sensitivity of MRI in detecting shoulder pathologies varied from poor (0.28) for Superior Labrum Anterior Posterior (SLAP) lesion to very good (0.88) for Bankart’s tear and (0.8) for synovial chondromatosis to excellent for rotator cuff tears (0.92). Although sensitivity of MRI was variable for different shoulder pathologies, specificity was comparatively high in detecting all of the above shoulder pathologies. The accuracy of MRI was highest (0.95) in diagnosing synovial chondromatosis, followed by bankart’s lesion (0.92), and rotator cuff tear (0.88). Conclusion: MRI is a very useful and effective tool in diagnosing various shoulder pathologies with exception of SLAP tears where its sensitivity diminishes significantly.

Functional information from magnetic resonance imaging

1995 ◽  
Vol 53 ◽  
pp. 84-85
Author(s):  
Alan P. Koretsky ◽  
Afonso Costa e Silva ◽  
Yi-Jen Lin
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
High Resolution ◽  
Cancer Biology ◽  
Imaging Modality ◽  
Magnetic Resonance Images ◽  
Great Success ◽  
Functional Information ◽  
Resonance Imaging ◽  
High Resolution Mri

Magnetic resonance imaging (MRI) has become established as an important imaging modality for the clinical management of disease. This is primarily due to the great tissue contrast inherent in magnetic resonance images of normal and diseased organs. Due to the wide availability of high field magnets and the ability to generate large and rapidly switched magnetic field gradients there is growing interest in applying high resolution MRI to obtain microscopic information. This symposium on MRI microscopy highlights new developments that are leading to increased resolution. The application of high resolution MRI to significant problems in developmental biology and cancer biology will illustrate the potential of these techniques.In combination with a growing interest in obtaining high resolution MRI there is also a growing interest in obtaining functional information from MRI. The great success of MRI in clinical applications is due to the inherent contrast obtained from different tissues leading to anatomical information.

Functional Magnetic Resonance Imaging Measures of Blood Flow Patterns in the Human Auditory Cortex in Response to Sound

1998 ◽  
Vol 41 (3) ◽  
pp. 538-548 ◽  
Author(s):  
Sean C. Huckins ◽  
Christopher W. Turner ◽  
Karen A. Doherty ◽  
Michael M. Fonte ◽  
Nikolaus M. Szeverenyi
Keyword(s):  
Magnetic Resonance Imaging ◽  
Blood Flow ◽  
Magnetic Resonance ◽  
Functional Magnetic Resonance Imaging ◽  
Functional Magnetic Resonance ◽  
Resonance Imaging ◽  
Speech Stimuli ◽  
Complex Stimuli ◽  
Scanning Session ◽  
Auditory Research

Functional Magnetic Resonance Imaging (fMRI) holds exciting potential as a research and clinical tool for exploring the human auditory system. This noninvasive technique allows the measurement of discrete changes in cerebral cortical blood flow in response to sensory stimuli, allowing determination of precise neuroanatomical locations of the underlying brain parenchymal activity. Application of fMRI in auditory research, however, has been limited. One problem is that fMRI utilizing echo-planar imaging technology (EPI) generates intense noise that could potentially affect the results of auditory experiments. Also, issues relating to the reliability of fMRI for listeners with normal hearing need to be resolved before this technique can be used to study listeners with hearing loss. This preliminary study examines the feasibility of using fMRI in auditory research by performing a simple set of experiments to test the reliability of scanning parameters that use a high resolution and high signal-to-noise ratio unlike that presently reported in the literature. We used consonant-vowel (CV) speech stimuli to investigate whether or not we could observe reproducible and consistent changes in cortical blood flow in listeners during a single scanning session, across more than one scanning session, and in more than one listener. In addition, we wanted to determine if there were differences between CV speech and nonspeech complex stimuli across listeners. Our study shows reproducibility within and across listeners for CV speech stimuli. Results were reproducible for CV speech stimuli within fMRI scanning sessions for 5 out of 9 listeners and were reproducible for 6 out of 8 listeners across fMRI scanning sessions. Results of nonspeech complex stimuli across listeners showed activity in 4 out of 9 individuals tested.

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