scholarly journals EVALUATION OF THE LUMBAR SAFETY TRIANGLE THROUGH MAGNETIC RESONANCE IMAGING

2019 ◽  
Vol 18 (4) ◽  
pp. 276-279
Author(s):  
Fernando Augusto Dannebrock ◽  
Erasmo de Abreu Zardo ◽  
Marcus Sofia Ziegler ◽  
Carlos Marcelo Donazar Severo ◽  
Joel Abramczuk ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Dorsal Root Ganglion ◽  
Dorsal Root ◽  
Resonance Imaging ◽  
Safety Zone ◽  
Level Of Evidence ◽  
The Mean ◽  
Magnetic Resonance Imaging Mri ◽  
Lower Vertebra

ABSTRACT Objective: To evaluate the lumbar triangular safety zone, its boundaries and its relationship with the dorsal root ganglion through Magnetic Resonance Imaging (MRI). Methods: The boundaries, shape and dimensions of 303 triangular safety zones were analyzed in Tesla 3.0 Magnetic Resonance Imaging (MRI) coronal sections from L2 to L5, including the dorsal root ganglion. Results: The sample consisted of 101 patients with a mean age of 32 years. The height of the triangular safety zone was formed by the lateral edge of the dura mater, the width by the upper plateau of the lower vertebra and the hypotenuse by the corresponding nerve root. The mean dimensions and the area varied according to the level studied. The dorsal root ganglion invaded the dimensions of the triangle in all the images studied. Conclusion: Based on the data and the analyses performed, we concluded that knowledge of the boundaries of the triangular safety zone through MRI increases the safety of minimally invasive procedures in the lumbar spine. Level of evidence I; Diagnostic studies – Investigation of a diagnostic test.

scholarly journals Magnetic resonance imaging (MRI) scans in patients with dorsal root ganglion stimulation

Pain Practice ◽  
2021 ◽  
Author(s):  
Marco Reining ◽  
Dirk Winkler ◽  
Joachim Boettcher ◽  
Juergen Meixensberger ◽  
Michael Kretzschmar
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Dorsal Root Ganglion ◽  
Dorsal Root ◽  
Resonance Imaging ◽  
Mri Scans ◽  
Magnetic Resonance Imaging Mri

scholarly journals Radiologist Identification of Occult Dorsal Wrist Ganglion Cysts on MRI

2019 ◽  
Vol 08 (04) ◽  
pp. 276-279
Author(s):  
Gregory Versteeg ◽  
Kanu Goyal
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Resonance Imaging ◽  
Radiology Report ◽  
Level Of Evidence ◽  
Ganglion Cysts ◽  
Magnetic Resonance Imaging Mri ◽  
Dorsal Ganglion ◽  
Dorsal Wrist Ganglion

Background Occult dorsal ganglion cysts (ODGC) require imaging or an operation for detection. It is currently unknown how often a radiologist identifies an ODGC on magnetic resonance imaging (MRI) and whether surgeon indication for MRI aids the radiologist in detection. Questions/Purposes The aim of the study was to investigate the following questions: how accurately do radiologists identify ODGC on MRIs? What factors may be associated with missed ODGCs? Patients and Methods We retrospectively studied patients who underwent an operation for an ODGC and had a preoperative wrist MRI. Radiology report and surgeon's notes were evaluated to determine whether identification of the ODGC was noted and whether the surgeon indicated that the MRI was to evaluate for an ODGC. MRIs were reviewed, dimensions of cysts measured and volume of cyst calculated. Results Twenty-four patients and 25 MRIs were analyzed. The radiologist identified the ODGC in 19 cases (76%). Fifteen of the 25 MRIs (60%) ordered had ODGC listed in the requisition comment by the ordering surgeon. Thirteen of these 15 (87%) ODGCs were seen by the radiologist. Ten of the 25 MRIs (40%) ordered did not mention ODGC in the requisition. Six of these 10 (60%) ODGCs were seen by the radiologist. The volume of the ODGCs missed by radiologists was smaller (mean, 0.049 cm3) than those the radiologists identified (mean, 0.31 cm3; p = 0.004). Conclusions Radiologists will not always identify the ODGC on an MRI, but they were more likely to if the surgeon was concerned for one. Hand surgeons should report suspicion of an ODGC on MRI requisition and review all imaging independently. Level of Evidence This is a Level III, prognostic study.

scholarly journals Measurement of normal optic nerve for Sudanese pediatric using magnetic resonance imaging

2020 ◽  
Vol 8 (11) ◽  
pp. 3799
Author(s):  
Rihab A. Yousif Ahmed ◽  
Awadia G. Suliman ◽  
Abdulmalek Y. Abdullah ◽  
Alrayah A. Mohammed ◽  
Amna R. Abdulghani ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Optic Nerve ◽  
Magnetic Resonance ◽  
Medical Condition ◽  
Medical Center ◽  
Endocrine Disorders ◽  
Resonance Imaging ◽  
Data Collection Sheet ◽  
The Mean ◽  
Magnetic Resonance Imaging Mri

Background: Much congenital and intracranial pathology may affect optic nerve (ON) and caused increased or decreased in size, so the measurement is crucial and aiding in diagnosed of some neurogenic and endocrine disorders. The aim of this study was to measure the normal ON length and diameter by magnetic resonance imaging among pediatric at Khartoum state Sudan.Methods: This was descriptive, cross section study,  done in 100 Sudanese pediatrics with age from 1 month to 15 years came to Magnetic resonance imaging (MRI) department for MRI brain at three hospitals in Khartoum state  (Al-Amal national hospital, Al-Zaitona hospital and Modern Medical Center) during the period from December 2019 to March 2020, all of patients had no pathological or medical condition that may affect the orbits and optic nerve (OON), any child with and medical condition or pathology related to orbits excluded from study sampling. The data were collected by data collection sheet designed especially for this study then analyzed.Results: The study found that the mean diameter of ON was 2.06±0.44 mm, the mean length of right ON was 31.54±4.11 mm, there is no significant different in measurement between males and females (p>0.05), there was strong significant correlation between ON length and diameter with children age (r=0.592**, 0.654**, p<0.001 respectively).Conclusions: The study concluded that there was strong correlation between right and left ON diameter and length with age.

scholarly journals Characteristics of Patellofemoral Measurement in Indonesian Population Using Magnetic Resonance Imaging

2021 ◽  
Vol 9 (A) ◽  
pp. 47-51
Author(s):  
Sholahuddin Rhatomy ◽  
Kurniawan Silalahi ◽  
Anggaditya Putra ◽  
Nolli Kresonni
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Trochlear Groove ◽  
Resonance Imaging ◽  
Normal Range ◽  
Femoral Trochlea ◽  
Indonesian Population ◽  
Average Body Mass ◽  
The Mean ◽  
Magnetic Resonance Imaging Mri

BACKGROUND: The patellofemoral join is a unique complex joint formed by articulation of the patella and the femoral trochlea. Normal measures for patellofemoral parameters have been published. AIM: This study aimed to describe the characteristics of patellofemoral measurements in Indonesian population using magnetic resonance imaging (MRI). METHODS: This descriptive total sampling study was conducted from May 2019 to August 2020. The parameters of the measurements in this study include Insall-Salvati ratio, Caton-Deschamps index, trochlear angle, lateral trochlear inclination, TT (tibia tubercle) – TG (trochlear groove) distance, and trochlear depth. The mean results of the measurements were compared with the normal value measurements that are internationally used. RESULTS: A total of 100 normal knees MRI scan from patients consisting of 54 (54%) males and 46 (46%) females, with an average age of 35.09 ± 12.77 (19–60) years old. The average body mass index (BMI) was 28.07 ± 3.0 (22–34). Based on ethnicity, subjects were mostly Javanese (66%), Sundanese (12%), Madura (4%), Minangkabau (7%), and the others (11%). The mean of Insall-Salvati ratio was 1.09 ± 0.17 (0.49–1.60). The mean of Caton-Deschamps index was 0.97 ± 0.16 (0.62–1.64). The mean of trochlear angle was 138.97° ± 119.7 (122°–160°). The mean of lateral trochlear inclination was 20.37° ± 4.56 (11.0°–30.6°). The mean of TT-TG distance was 13.76 ± 5.86 (4.9–41), and the mean of trochlear depth was 5.18 ± 1.87 (1.05–8.6). Those values were within normal range of international values. There were no significant differences between comparison of males and females. CONCLUSION: The means of Insall-Salvati ratio, Caton-Deschamps index, trochlear angle, lateral trochlear inclination, and TT-TG trochlear depth of the Indonesian people were within the international normal range, and higher than other countries’ published measurements.

Clinical and Magnetic Resonance Imaging Outcomes of Microfracture Plus Chitosan/Blood Implant vs Microfracture for Osteochondral Lesions of the Talus

2020 ◽  
Vol 41 (11) ◽  
pp. 1368-1375
Author(s):  
Yalkin Camurcu ◽  
Hanifi Ucpunar ◽  
Furkan Yapici ◽  
Resit Karakose ◽  
Seckin Ozcan ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Osteochondral Lesions ◽  
Resonance Imaging ◽  
Glycerol Phosphate ◽  
Level Of Evidence ◽  
Repair Tissue ◽  
Significant Difference ◽  
The Mean ◽  
Group 1

Background: The aim of this study was to compare the clinical and magnetic resonance imaging (MRI) outcomes of arthroscopic microfracture (MF) plus chitosan-glycerol phosphate/blood implant and MF alone for the treatment of the osteochondral lesions of the talus (OCLTs). Methods: Patients who underwent either MF plus chitosan (group 1, n = 32) or MF alone (group 2, n = 31) between 2015 and 2019 in 2 separate time periods were retrospectively analyzed. Visual analog scale (VAS) score and American Orthopaedic Foot & Ankle Society (AOFAS) score were used for clinical evaluation. The magnetic resonance observation of cartilage repair tissue (MOCART) system was used for MRI evaluation. The mean follow-up time was 32 ± 13 months (range, 12-61 months). Results: Postoperatively, we detected significant improvements in both groups in terms of VAS and AOFAS scores. However, we observed no statistically significant difference between groups in terms of clinical scores, except the mean VAS function score, which was significantly higher in group 1 ( P = .022). According to MOCART scale, complete repair with the filling of the chondral defect and intactness of the surface of the repair tissue were more common in group 1. However, these parameters did not significantly differ between groups ( P = .257 and .242, respectively). Conclusion: Arthroscopic MF plus chitosan glycerol phosphate/blood implant did not result in better clinical and MRI outcomes compared with MF alone in the treatment of OCLTs. Level of Evidence: Level III, retrospective comparative study.

Magnetic Resonance Imaging After Arthroscopic Microfracture of Capitellar Osteochondritis Dissecans

2012 ◽  
Vol 40 (11) ◽  
pp. 2549-2556 ◽  
Author(s):  
Corey A. Wulf ◽  
Rebecca M. Stone ◽  
M. Russell Giveans ◽  
Gregory N. Lervick
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Osteochondritis Dissecans ◽  
Articular Surface ◽  
Resonance Imaging ◽  
Arthroscopic Microfracture ◽  
The Mean ◽  
Magnetic Resonance Imaging Mri ◽  
Mri Evaluation

Background: Osteochondritis dissecans (OCD) of the capitellum affects young athletes involved in elbow load-bearing activities. Unstable lesions are best managed surgically, although debate remains regarding the optimal method. Arthroscopic treatment allows rapid recovery, but the effect on the articular surface is undetermined. Hypothesis: The clinical outcome after arthroscopic microfracture of stage III/IV capitellum OCD would be successful in terms of return to sport and restoration of function, and there would be some evidence of articular restoration or repair. Study Design: Case series; Level of evidence, 4. Methods: We reviewed records of 10 consecutive adolescent patients (age ≤18 years) with stage III or IV OCD lesions of the capitellum managed with arthroscopic microfracture. The mean age at the time of surgery was 13.9 years (range, 10.8-18.5 years); 7 patients were skeletally immature and 3 were skeletally mature. Pre- and postoperative functional assessment included active range of motion, Mayo Elbow Performance Score (MEPS), and Timmerman/Andrews elbow score. All patients underwent plain radiographic and magnetic resonance imaging (MRI) evaluation at a minimum of 12 months (mean, 27 months; range, 12-49 months) and clinical evaluation at a minimum of 24 months (mean, 42 months; range, 27-54 months) after surgery. Results: The mean range of motion improved in both flexion (135.8°→140.7°, P = .112) and extension (20.4°→–2.2°, P = .005). The mean MEPS (70.5→97, P = .007) and Timmerman/Andrews elbow scores (116.4→193.0, P = .008) improved significantly. magnetic resonance imaging (MRI) evaluation demonstrated an improvement in overall joint congruence and the formation of a reparative articular surface in 8 of 10 (80%) patients. No reoperations or major complications were encountered. Six of 8 patients involved in competitive athletics returned to the same level of participation at an average of 5.1 months. Conclusion: Arthroscopic OCD fragment excision and capitellar microfracture demonstrates good to excellent functional results in short-term follow-up. Follow-up MRI suggests potential for a reparative fibrocartilaginous articular surface. Longer term follow-up is necessary to determine durability of the technique.

Does collagenase injection disrupt or digest the Dupuytren’s cord: a magnetic resonance imaging study

2016 ◽  
Vol 41 (6) ◽  
pp. 614-620 ◽  
Author(s):  
K. M. Crivello ◽  
H. G. Potter ◽  
E. S. Moon ◽  
S. K. Rancy ◽  
Scott W. Wolfe
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Signal Intensity ◽  
Imaging Study ◽  
Resonance Imaging ◽  
Level Of Evidence ◽  
Collagenase Injection ◽  
Intensity Changes ◽  
Full Correction ◽  
Magnetic Resonance Imaging Mri

Collagenase clostridium histolyticum has been extensively studied as a treatment modality for Dupuytren’s contracture. Its mechanism of action has been documented. It is unknown whether injected collagenase weakens the Dupuytren’s cord sufficiently to cause failure during manipulation or if there is digestion and reduction in cord volume. We examined five patients with isolated contractures of the ring or middle metacarpalphalangeal (MP) joint using magnetic resonance imaging (MRI) prior to injection with collagenase and again 1 month following injection. All patients had full correction after manipulation which was maintained at follow-up. The Dupuytren’s cord was evaluated with respect to volume, signal intensity, inflammatory changes and continuity. Additionally, signal intensity changes of the flexor tendons and neurovascular structures were recorded. MRI demonstrated cord discontinuity, significant reduction of cord volume and a significant increase in cord signal intensity after treatment with collagenase. There was a slight increase in flexor tendon signal intensity that was not significant. These findings suggest that there may be local chemical dissolution of the cord. Future studies may establish whether or not this will have prognostic implications in terms of correction and recurrence following collagenase injection. Level of evidence: IV

Morphological changes of the dorsal root ganglion in a patient with herpes zoster seen by magnetic resonance imaging

2008 ◽  
Vol 13 (4) ◽  
pp. 383-386 ◽  
Author(s):  
Mitsunori Yoshimoto ◽  
Satoshi Kawaguchi ◽  
Tsuneo Takebayashi ◽  
Satoshi Isogai ◽  
Shinsuke Nonaka ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Herpes Zoster ◽  
Magnetic Resonance ◽  
Dorsal Root Ganglion ◽  
Dorsal Root ◽  
Morphological Changes ◽  
Resonance Imaging

scholarly journals Imaging of Groin Pain: Magnetic Resonance and Ultrasound Imaging Features

2017 ◽  
Vol 9 (5) ◽  
pp. 428-435 ◽  
Author(s):  
Susan C. Lee ◽  
Yoshimi Endo ◽  
Hollis G. Potter
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Groin Pain ◽  
Pubic Bone ◽  
Imaging Features ◽  
Resonance Imaging ◽  
Level Of Evidence ◽  
Athletic Pubalgia ◽  
Pubmed Search ◽  
Magnetic Resonance Imaging Mri

Context: Evaluation of groin pain in athletes may be challenging as pain is typically poorly localized and the pubic symphyseal region comprises closely approximated tendons and muscles. As such, magnetic resonance imaging (MRI) and ultrasound (US) may help determine the etiology of groin pain. Evidence Acquisition: A PubMed search was performed using the following search terms: ultrasound, magnetic resonance imaging, sports hernia, athletic pubalgia, and groin pain. Date restrictions were not placed on the literature search. Study Design: Clinical review. Level of Evidence: Level 4. Results: MRI is sensitive in diagnosing pathology in groin pain. Not only can MRI be used to image rectus abdominis/adductor longus aponeurosis and pubic bone pathology, but it can also evaluate other pathology within the hip and pelvis. MRI is especially helpful when groin pain is poorly localized. Real-time capability makes ultrasound useful in evaluating the pubic symphyseal region, as it can be used for evaluation and treatment. Conclusion: MRI and US are valuable in diagnosing pathology in athletes with groin pain, with the added utility of treatment using US-guided intervention. Strength-of Recommendation Taxonomy: C

scholarly journals Assessment of the Magnetic Resonance Imaging Features of Baker’s Cysts and Their Correlation with the Age of Patients

2020 ◽  
Vol 101 (3) ◽  
pp. 155-162
Author(s):  
S. A. Chernyad’ev ◽  
V. B. Aretinskiy ◽  
N. I. Sivkova ◽  
A. V. Zhilyakov ◽  
N. Yu. Korobova ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Cartilage Tissue ◽  
Imaging Features ◽  
Resonance Imaging ◽  
Tissue Changes ◽  
Length Width ◽  
The Mean ◽  
Magnetic Resonance Imaging Mri ◽  
Meniscal Damage

Objective. To determine the magnetic resonance imaging (MRI) morphological features of Baker’s cysts and to assess their correlation with the age of patients.Material and methods. The investigation was based on the assessment of MRI readings in 37 patients with Baker’s cysts; of them there were 29 (78.4%) women and 8 (21.6%) men. The mean age of the examinees was 60.3 years (25 to 82 years).Results. The mean dimensions of the cysts were measured. Their length, width, and height were 34 ± 2.1 mm, 5 ± 1.2 mm (range 4–31 mm), and 58 ± 2.9 mm, respectively. Their mean thickness was 0.7 mm. Intracystic chondral bodies were detected in 3 (7.5%) cases. These parameters were shown to be unrelated to age. It was found that all cysts were multi-chamber and an average of 6.8 chambers was detected. There was a weak, inversely proportional, statistically significant relationship between the age of the patients and the number of chambers in the cyst. The younger participants of the investigation exhibited no meniscal damage in an overwhelming case (57.1%); whereas complete and incomplete meniscal tears much more often occurred in older patients with Baker’s cysts (from 29 (78.4%) to 34 (91.9%) people, respectively).Conclusion. Degenerative bone and cartilage tissue changes in the joint increase with age, regardless of the cyst sizes.

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