Two cadaveric studies show that ultrasound-guided (USG) injections significantly improve acromioclavicular (AC) joint placement accuracy.
- Study 1: https://pubmed.ncbi.nlm.nih.gov/22475721/
- USG: 36/40 (90% accuracy)
- Palpation: 28/40 (70% accuracy)
- Study 2: https://pubmed.ncbi.nlm.nih.gov/20869680/
- USG: 10/10 (100% accuracy)
- Palpation: 4/10 (40%)