Magnetic resonance imaging of denervation-induced muscle atrophy: Effects of clenbuterol in the rat

2001 ◽  
Vol 24 (12) ◽  
pp. 1647-1658 ◽  
Author(s):  
Michael D. Cockman ◽  
Melissa B. Jones ◽  
Marla C. Prenger ◽  
Russell J. Sheldon
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Muscle Atrophy ◽  
Resonance Imaging

Schwannomas of the Upper Extremity

2000 ◽  
Vol 25 (6) ◽  
pp. 604-607 ◽  
Author(s):  
H. J. KANG ◽  
S. J. SHIN ◽  
E. S. KANG
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Muscle Atrophy ◽  
Clinical Characteristics ◽  
Neurological Complications ◽  
Resonance Imaging ◽  
Postoperative Results ◽  
Mri Features ◽  
Microsurgical Techniques ◽  
Hypothenar Muscle

This study presented the clinical characteristics, MRI features and postoperative results of 20 schwannomas in the arms of 13 patients. Twelve tumours had a positive Tinel’s sign, one caused weakness of the wrist and another in Guyon’s canal caused hypothenar muscle atrophy. Of the nine cases which underwent magnetic resonance imaging preoperatively, six were correctly diagnosed as schwannomas. All masses were excised using microsurgical techniques and two transient neurological complications occurred.

Volumetric analysis of vocal fold atrophy via magnetic resonance imaging

2018 ◽  
Vol 132 (9) ◽  
pp. 822-826 ◽  
Author(s):  
S Saint-Victor ◽  
E Barbarite ◽  
C Sidani ◽  
R Bhatia ◽  
D E Rosow
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Muscle Atrophy ◽  
Intraclass Correlation ◽  
Age Groups ◽  
Retrospective Chart Review ◽  
Resonance Imaging ◽  
Age Related ◽  
Significant Difference ◽  
Thyroarytenoid Muscle

AbstractObjectiveTo quantitatively test the hypothesis that older patients have increased thyroarytenoid muscle atrophy by comparing thyroarytenoid muscle volumes across different age groups.MethodsA retrospective chart review was conducted. The study included 111 patients with no history of laryngeal pathology. Two investigators reviewed magnetic resonance imaging studies of these patients and manually traced the thyroarytenoid muscles on multiple slices bilaterally. Thyroarytenoid muscle volumes were then computed using imaging analysis software. Patients were stratified into three age groups (18–50 years, 51–64 years, and 65 years or older) for comparison.ResultsIntra- and inter-rater reliabilities were excellent for all measurements (intraclass correlation co-efficient > 0.90). There was no statistically significant difference in the mean volumes of left and right thyroarytenoid muscles in all age and gender groups.ConclusionGiven the lack of statistically significant difference in thyroarytenoid muscle volume between age groups on magnetic resonance imaging, the prevailing assumption that age-related thyroarytenoid muscle atrophy contributes to presbyphonia should be re-examined.

scholarly journals The influence of fatty infiltration and muscle atrophy of the rotator cuff muscles on midterm functional outcomes in total shoulder resurfacing at six years’ follow-up

2018 ◽  
Vol 12 (2) ◽  
pp. 91-98
Author(s):  
Gray AD Edwards ◽  
Philip A McCann ◽  
Michael R Whitehouse ◽  
Charles J Wakeley ◽  
Partha P Sarangi
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Rotator Cuff ◽  
Muscle Atrophy ◽  
Functional Outcomes ◽  
Fatty Infiltration ◽  
Resonance Imaging ◽  
Shoulder Replacement ◽  
Total Shoulder Replacement

Background We report functional outcomes at six years in patients with varying degrees of fatty infiltration and atrophy of the rotator cuff muscles who have undergone anatomic total shoulder replacement. Methods A retrospective analysis of case notes and magnetic resonance imaging scans of patients undergoing total shoulder replacement for primary glenohumeral arthritis was performed. Patients were grouped based upon their pre-operative magnetic resonance imaging findings for fatty infiltration, muscle area and tendinopathy. Post-operative functional outcomes were assessed using the Oxford Shoulder Score and Quick Disabilities of the Arm, Shoulder and Hand score. Post-operative measurements were made for active shoulder movements. Results Thirty-two patients were reviewed at a mean of 67 months following surgery. All patients demonstrated fatty infiltration on their pre-operative magnetic resonance imaging scan. Muscle atrophy was shown in 22 patients and 12 had tendinopathy. Multiple regression analysis showed no correlation between the Oxford Shoulder Score (p = 0.443), the Quick Disabilities of the Arm, Shoulder and Hand score (p = 0.419), forward flexion (p = 0.170), external rotation (p = 0.755) and any of the pre-operative independent variables. Discussion The degree of fatty infiltration, muscle atrophy and tendinopathy of the rotator cuff muscle on pre-operative magnetic resonance imaging scanning is not associated with functional outcome score or functional movement at medium-term follow-up following total shoulder replacement. Level of evidence IV

Muscle Atrophy Beyond the Clinical Effect After a Single Dose of OnabotulinumtoxinA Injected in the Procerus Muscle: A Study with Magnetic Resonance Imaging

2013 ◽  
Vol 39 (5) ◽  
pp. 761-765 ◽  
Author(s):  
Inga K. Koerte ◽  
Sebastian A. Schroeder ◽  
Urban M. Fietzek ◽  
Ingo Borggraefe ◽  
Martina Kerscher ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Single Dose ◽  
Magnetic Resonance ◽  
Muscle Atrophy ◽  
Clinical Effect ◽  
Resonance Imaging

scholarly journals Compressive neuropathy of the first branch of the lateral plantar nerve: a study by magnetic resonance imaging

2015 ◽  
Vol 48 (6) ◽  
pp. 368-372 ◽  
Author(s):  
Rogéria Nobre Rodrigues ◽  
Alexia Abuhid Lopes ◽  
Jardélio Mendes Torres ◽  
Marina Franco Mundim ◽  
Lênio Lúcio Gavio Silva ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Muscle Atrophy ◽  
Plantar Fasciitis ◽  
Cross Sectional Study ◽  
Resonance Imaging ◽  
Cross Sectional ◽  
Lateral Plantar Nerve ◽  
Compressive Neuropathy ◽  
Fatty Atrophy

Abstract Objective: To assess the prevalence of isolated findings of abnormalities leading to entrapment of the lateral plantar nerve and respective branches in patients complaining of chronic heel pain, whose magnetic resonance imaging exams have showed complete selective fatty atrophy of the abductor digiti quinti muscle. Materials and Methods: Retrospective, analytical, and cross-sectional study. The authors selected magnetic resonance imaging of hindfoot of 90 patients with grade IV abductor digiti quinti muscle atrophy according to Goutallier and Bernageau classification. Patients presenting with minor degrees of fatty muscle degeneration (below grade IV) and those who had been operated on for nerve decompression were excluded. Results: A female prevalence (78.8%) was observed, and a strong correlation was found between fatty muscle atrophy and plantar fasciitis in 21.2%, and ankle varices, in 16.8% of the patients. Conclusion: Fatty atrophy of the abductor digiti quinti muscle is strongly associated with neuropathic alterations of the first branch of the lateral plantar nerve. The present study showed a significant association between plantar fasciitis and ankle varices with grade IV atrophy of the abductor digiti quinti muscle.

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