Related Experiment Video
Updated: Feb 3, 2026
Evaluating Targeting Accuracy in the Focal Plane for an Ultrasound-guided High-intensity Focused Ultrasound Phased-array System
Published on: March 6, 2019
Accuracy and efficacy of ultrasound-guided pes anserinus bursa injection
Jong H Lee1, Jae U Lee1, Seung W Yoo1
1Department of Physical Medicine and Rehabilitation, Dong-A University College of Medicine, Busan, Republic of Korea.
Purpose:
To compare the accuracy and efficacy of ultrasound (US)-guided versus blind pes anserinus bursa (PAB) injection in patients with pes anserinus tendinobursitis (PATB).
Methods:
Forty-seven patients with clinically diagnosed PATB were randomly assigned to a US-guided group or a blind group of steroid injection. In the US-guided group, the injectate was delivered under sonographic visualization. In the blind group, the conventional technique was used without any visual guidance. After the PAB injection, the injectate location was identified using US in both groups. Treatment effects were assessed using the visual analogue scale (VAS) of knee tenderness. Outcomes were measured before, 1 week and 4 weeks after the injection.
Results:
Both groups showed pain relieving at 1 week and 4 weeks after the injection. The injectate in the US guided group were found to be accurately at the PAB in all subjects, whereas blind group were found to be just in 4 of 22 subjects. The US-guided group showed significant improvement of both of VAS scores compared to the blind group at 1 week and 4 weeks after the injection (P < .05).
Conclusion:
Our results suggest that US-guided PAB injection is more accurate and effective than blind injection in patients with PATB.
Related Concept Videos
02:07Improving Translational Accuracy
02:07Improving Translational Accuracy
03:37Uncertainty in Measurement: Accuracy and Precision
01:29Self-Efficacy
01:52Accuracy and Precision
01:28Accuracy, limits, and approximation
Accuracy is defined as the closeness of the measured value to the true or actual value. In engineering mechanics, repeated measurements are taken during theoretical or experimental analyses to ensure that the result is precise and accurate.
The accuracy of any solution is based on the...