Abstract
To compare the accuracy and efficacy of ultrasound (US)-guided versus blind pes anserinus bursa (PAB) injection in patients with pes anserinus tendinobursitis (PATB). 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. 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). Our results suggest that US-guided PAB injection is more accurate and effective than blind injection in patients with PATB.
Highlights
The pes anserinus (PA), which means “Goose foot” in Latin, consists of the conjoined tendon of the sartorius, gracilis, and semitendinosus muscles
PA bursitis or tendinitis, or called PA tendinobursitis (PATB), is usually used to describe the inflammatory condition of the PA bursa (PAB) mainly caused by Ultrasound Imaging - Current Topics repetitive friction over the bursa or by direct trauma
There were no significant differences in general characteristics including knee OA K-L grade, and baseline visual analog scale (VAS) scores between the two groups (Table 1)
Summary
The pes anserinus (PA), which means “Goose foot” in Latin, consists of the conjoined tendon of the sartorius, gracilis, and semitendinosus muscles It inserts into the proximal anteromedial aspect of the tibia approximately 5 cm distal to the medial tibial joint line. PA bursitis or tendinitis, or called PA tendinobursitis (PATB), is usually used to describe the inflammatory condition of the PAB mainly caused by Ultrasound Imaging - Current Topics repetitive friction over the bursa or by direct trauma. It can be observed in patients with rheumatoid arthritis, osteoarthritis (OA), and diabetes mellitus. The treatment strategy is similar for those conditions [9]
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