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High-resolution ultrasound: First-line imaging choice for the evaluation of patients with foot drop?

Date:
May 6, 2010
Source:
American College of Radiology / American Roentgen Ray Society
Summary:
High-resolution ultrasound should be the imaging test of choice when evaluating patients with foot drop (an inability or difficulty in moving the ankle and toes causing uncontrolled slapping of the foot while taking a step), according to a new study. Ultrasound imaging is non-invasive and involves exposing part of the body to high-frequency ultrasound waves to produce pictures of inside the body.

High resolution ultrasound should be the imaging test of choice when evaluating patients with foot drop (an inability or difficulty in moving the ankle and toes causing uncontrolled slapping of the foot while taking a step), according to a study to be presented at the American Roentgen Ray Society 2010 Annual Meeting in San Diego, CA. Ultrasound imaging is non-invasive and involves exposing part of the body to high-frequency ultrasound waves to produce pictures of inside the body.

Foot drop is usually caused by peroneal neuropathy which is the most common compression neuropathy (damage to a single nerve or nerve group) of the lower extremity. "Electromyography (EMG) and magnetic resonance imaging (MRI) are commonly used to evaluate the peroneal nerve in patients with foot drop, however, they are not always effective,' said Tom Grant, DO, lead author of the study.

The study, performed at the Feinberg School of Medicine, Northwestern University, in Chicago, IL, included 15 patients with foot drop who were evaluated using high resolution ultrasound. "Ultrasound was found to be highly effective for the characterization of the common peroneal nerve, including intrinsic and extrinsic causes of peroneal neuropathy," said Grant. All patients evaluated were found to have peroneal neuropathy.

"Ultrasound is less expensive than EMG and MRI, it is painless, and as our study suggests, is highly effective for the evaluation of patients with foot drop," he said.

"Ultrasound should be considered as a first test in the evaluation of patients with foot drop. If the ultrasound is normal, then EMG and MRI should be performed," said Grant.


Story Source:

The above story is based on materials provided by American College of Radiology / American Roentgen Ray Society. Note: Materials may be edited for content and length.


Cite This Page:

American College of Radiology / American Roentgen Ray Society. "High-resolution ultrasound: First-line imaging choice for the evaluation of patients with foot drop?." ScienceDaily. ScienceDaily, 6 May 2010. <www.sciencedaily.com/releases/2010/05/100506083440.htm>.
American College of Radiology / American Roentgen Ray Society. (2010, May 6). High-resolution ultrasound: First-line imaging choice for the evaluation of patients with foot drop?. ScienceDaily. Retrieved April 23, 2014 from www.sciencedaily.com/releases/2010/05/100506083440.htm
American College of Radiology / American Roentgen Ray Society. "High-resolution ultrasound: First-line imaging choice for the evaluation of patients with foot drop?." ScienceDaily. www.sciencedaily.com/releases/2010/05/100506083440.htm (accessed April 23, 2014).

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