%0 Journal Article
%T Accuracy of ultrasound
%A Armen Derian
%A Douglas Johnson-Greene
%A Julia Amundson
%A Karl Abi-Aad
%A Ricardo Vasquez-Duarte
%J Ultrasound
%@ 1743-1344
%D 2018
%R 10.1177/1742271X18789711
%X To determine the accuracy of ultrasound guidance compared to palpation in performing carpometacarpal joint injections in cadavers. In all, 36 carpometacarpal joints were randomized to either ultrasound-guided or palpation-based injections, with 1ˋcc of blue latex solution injected into each joint. The specimens were then dissected and the distribution of the latex was assessed by two independent, blinded raters. Injection accuracy was evaluated on a four-point quartile rating scale of 1每4, corresponding to the amount of the latex solution within the joint (1ˋ=ˋ0每25%, 2ˋ=ˋ26每50%, 3ˋ=ˋ51每75%, 4ˋ=ˋ76每100%). Inter-rater reliability was a secondary measure. The mean rating of accuracy was 2.1 for both palpation-based and ultrasound-guided injections. There was no statistically significant difference in accuracy between the two injectors. Chi-square analysis testing differences in accuracy for the two conditions was not statistically significant. The Cronbach＊s alpha for rater 2 was 0.74, which represents an acceptable level of reliability. A Friedman＊s Chi-square for the two raters was 2.3 (pˋ=ˋ0.13), indicating no significant difference between raters. Ultrasound guidance did not improve the accuracy of carpometacarpal joint injections in cadavers. However, the high inter-rater reliability attests to the value of the novel assessment scale
%K Ultrasound
%K accuracy
%K injection
%K carpometacarpal joint
%K ultrasound guided injections
%U https://journals.sagepub.com/doi/full/10.1177/1742271X18789711