Landmark-Guided and Ultrasound-Guided Approaches for Trochanteric Bursa Injection: A Cadaveric Study

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Abstract

BACKGROUND:

Trochanteric bursa (TB) injection with local anesthetic and corticosteroid is a treatment for patients suffering from greater trochanteric pain syndrome. Both landmark (LM)-guided and ultrasound (US)-guided methods have been used, but their accuracies have not been determined. This study examined the accuracy of these injections with cadaveric dissection.

METHODS:

Twenty-four hip specimens were randomized to receive TB injections with methylene blue under either LM-guided or US-guided approach. After dissection, the locations of the dye were classified into 3 categories: intrabursal, extrabursal, or combined intrabursal and extrabursal. The presence of dye in the intrabursal space with or without extrabursal leak was considered a successful injection. Accuracy was defined as the percentage of successful injection.

RESULTS:

The accuracies of the LM-guided and US-guided injection were 0.67 (95% confidence interval 0.35–0.90) and 0.92 (95% confidence interval 0.62–1.00), respectively, with no significant difference.

CONCLUSIONS:

This is the first cadaveric study examining the accuracy of both the US-guided and LM-guided techniques for TB injection. Future clinical studies are required to compare the outcomes of LM-guided and US-guided greater trochanteric pain syndrome injection.

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