Reliability of side-to-side ultrasound cross-sectional area measurements of lower extremity nerves in healthy subjects

2012 ◽  
Vol 46 (5) ◽  
pp. 717-722 ◽  
Author(s):  
Alberto Tagliafico ◽  
Angela Cadoni ◽  
Erica Fisci ◽  
Bianca Bignotti ◽  
Luca Padua ◽  
...  
Keyword(s):  
Lower Extremity ◽  
Healthy Subjects ◽  
Cross Sectional Area ◽  
Sectional Area ◽  
Cross Sectional

scholarly journals Bilateral Differences in Muscle Architecture and Increased Rate of Injury in National Basketball Association Players

2014 ◽  
Vol 49 (6) ◽  
pp. 794-799 ◽  
Author(s):  
Gerald T. Mangine ◽  
Jay R. Hoffman ◽  
Adam M. Gonzalez ◽  
Adam R. Jajtner ◽  
Tyler Scanlon ◽  
...  
Keyword(s):  
Lower Extremity ◽  
Vastus Lateralis ◽  
Muscle Thickness ◽  
Cross Sectional Area ◽  
Lower Extremity Injury ◽  
Sectional Area ◽  
Basketball Players ◽  
Cross Sectional ◽  
Professional Basketball ◽  
Bilateral Differences

Context Professional basketball players have demanding schedules that, in combination with certain underlying physical characteristics and side-to-side strength and power imbalances, may make them vulnerable to lower extremity injuries. Objective To examine the relationship among skeletal muscle architecture, lower body power, and games missed because of lower extremity injury (%MISS) in professional basketball players. Design Cross-sectional study. Setting Human Performance Laboratory. Patients or Other Participants Nine players under contract for Orlando Magic were assessed. We compared athletes who were injured (n = 4, height = 203.2 ± 5.5 cm, mass = 105 ± 7.5 kg, age = 25.0 ± 2.8 years) and those who remained healthy (n = 5, height = 200.2 ± 12.2 cm, mass = 100.1 ± 16.6 kg, age = 22.4 ± 1.9 years) during the season. Main Outcome Measure(s) Bilateral ultrasonographic measurements of muscle thickness, pennation angle, echo intensity, and cross-sectional area of the rectus femoris and vastus lateralis were collected before regular-season play. Subsequently, muscle thickness and pennation angle were used to compute fascicle length. Along with unilateral jumping power, inferences were made upon the magnitude of the relationship between the percentage bilateral difference in these measures and %MISS, as well as between injured and healthy athletes. Results The data indicated likely relationships between %MISS and age (r = 0.772), and between %MISS and bilateral differences in rectus femoris cross-sectional area (7.8% ± 6.4%; r = 0.657) and vastus lateralis cross-sectional area (6.2% ± 4.8%; r = 0.521), as well as a possible relationship with vastus lateralis muscle thickness (7.9% ± 8.9%; r = 0.444). Echo-intensity differences in the vastus lateralis were greater in injured (8.0% ± 2.4%) versus healthy athletes (3.2% ± 2.0%). Although a 2-fold difference in mean jumping power was observed between injured (26.3 ± 14.9 W) and healthy athletes (13.6 ± 8.7 W), these differences were not statistically significant (P = .20). Conclusions In the present sample, lower extremity side-to-side differences may be related to an increased risk for lower extremity injury. Future researchers using larger sample sizes need to identify normal versus at-risk ranges for bilateral differences in muscle structure and power of the lower extremities of professional basketball players and athletes in other sports.

scholarly journals Dehydration affects spinal cord cross-sectional area measurement on MRI in healthy subjects

Spinal Cord ◽  
2014 ◽  
Vol 52 (8) ◽  
pp. 616-620 ◽  
Author(s):  
C Wang ◽  
R C Tam ◽  
E Mackie ◽  
D K B Li ◽  
A L Traboulsee
Keyword(s):  
Spinal Cord ◽  
Healthy Subjects ◽  
Cross Sectional Area ◽  
Area Measurement ◽  
Sectional Area ◽  
Cross Sectional

scholarly journals Shear wave elastography of the radial nerve in healthy subjects

2021 ◽  
Vol 49 (1) ◽  
pp. 030006052098793
Author(s):  
Mohamed A Bedewi ◽  
Mamdouh A Kotb ◽  
Nasser M Aldossary ◽  
Ahmed M Abodonya ◽  
Ayman K Saleh ◽  
...  
Keyword(s):  
Shear Wave ◽  
Radial Nerve ◽  
Healthy Subjects ◽  
Shear Wave Elastography ◽  
Cross Sectional Study ◽  
Cross Sectional Area ◽  
Short Axis ◽  
Sectional Area ◽  
Cross Sectional ◽  
The Mean

Objective This study was performed to examine the sonoelastographic features of the radial nerve in healthy subjects. Methods In this observational cross-sectional study, shear wave elastography was used to evaluate the radial nerve. The cross-sectional area and stiffness were measured. Results The study included 37 nerves in 20 healthy adult subjects. The mean cross-sectional area of the radial nerve at the arm was 6.1 mm2. The mean stiffness of the radial nerve in the short axis was 30.3 kPa, and that in the long axis was 34.9 kPa. The elasticity measurements were significantly different between the long axis and short axis. Conclusion The elastic modulus of the radial nerve was studied in healthy subjects and can serve as a reference for future assessment of different radial nerve pathologies.

Lower-Extremity Muscle Cross-Sectional Area After Incomplete Spinal Cord Injury

2006 ◽  
Vol 87 (6) ◽  
pp. 772-778 ◽  
Author(s):  
Prithvi K. Shah ◽  
Jennifer E. Stevens ◽  
Chris M. Gregory ◽  
Neeti C. Pathare ◽  
Arun Jayaraman ◽  
...  
Keyword(s):  
Spinal Cord ◽  
Spinal Cord Injury ◽  
Lower Extremity ◽  
Cross Sectional Area ◽  
Sectional Area ◽  
Incomplete Spinal Cord Injury ◽  
Cross Sectional ◽  
Lower Extremity Muscle ◽  
Cord Injury ◽  
Muscle Cross Sectional Area
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