Related Experiment Video
Updated: Aug 17, 2026

Utility of Dissociated Intrinsic Hand Muscle Atrophy in the Diagnosis of Amyotrophic Lateral Sclerosis
Published on: March 4, 2014
Diagnostic value of hand X-rays in Turner's syndrome
Abstract:
Previously described radiological signs of Turner's syndrome were evaluated in X-rays of the left hand from 17 patients with Turner's syndrome (age 10.4--15.3 years) and 17 age-matched girls with constitutional short stature. While none of the signs clearly distinguished between the two groups, ballooning of the tips of the terminal phalanges with a high ratio between the tip and mid-shaft diameters seemed to be the most useful of Turner's syndrome. Disproportionately long phalanges in the 4th finger and the presence of a coarse reticular pattern in the carpal bones appeared to be the next most useful signs. The presence of a short 4th metacarpal or a narrow carpal angle, and assessment for Madelung's deformity were of little value in distinguishing between the two groups.
Related Concept Videos
Karyotyping
X and Y Chromosomes
The germline cells such as egg and sperm cells carry only half the number of chromosomes, i.e., 22 autosomes and one sex chromosome. All eggs have an X chromosome, while sperm cells can carry an X or...
X-ray Imaging
Radiological Investigation I: X-ray and CT
Imaging Studies for Cardiovascular System III: X-Ray
Definition and Purpose
An X-ray, or radiograph, is a non-invasive method that uses ionizing radiation to take images of internal structures. It is mainly used in cardiac imaging to examine the heart, lungs, and major blood vessels, aiming to identify abnormalities in the heart's size, shape, and position, such as heart failure, congenital defects, and vascular...

