Scholarlink

<p>Intramuscular injection into the deltoid muscle has increased in Japan following coronavirus disease 2019 (COVID-19) vaccination programs and the introduction of vaccines such as Shingrix™. Limited experience with this technique may increase the risk of shoulder injury related to vaccine administration (SIRVA). Landmark-based techniques have not been sufficiently validated using ultrasonography. Thirty-four healthy volunteers were enrolled. Using ultrasound, we measured the distances and depths from the conventional injection site—defined as the intersection of a vertical line from the acromion and the axillary horizontal line (AHL)—to the axillary nerve, radial nerve, and subdeltoid bursa. The axillary nerve/posterior circumflex humeral artery was located 1.8 ± 1.2&#xa0;cm from the AHL at a depth of 2.6 ± 1.2&#xa0;cm. The inferior margin of the subdeltoid bursa was located − 0.3 ± 1.2&#xa0;cm at a depth of 2.5 ± 0.4&#xa0;cm. The radial nerve was located 9.4 ± 2.0&#xa0;cm caudally. There were no differences between left and right. An injection site located 3.0–3.5&#xa0;cm below AHL, with a needle depth &lt; 1.7&#xa0;cm, may represent a safer approach for injection. These findings provide anatomical insights that may help optimize injection techniques and potentially reduce the risk of SIRVA. <i>Clinical trial registration:</i> UMIN000048777.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Ultrasonographic evaluation of safer deltoid intramuscular injection sites to reduce the risk of SIRVA

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年5月25日

查看全文
  • Mitsuharu Kodaka,
  • Yoko Mukouyama,
  • Ikuko Ushiyama,
  • Erika Shimizu,
  • Yusuke Hashimoto,
  • Junko Ichikawa

摘要

Intramuscular injection into the deltoid muscle has increased in Japan following coronavirus disease 2019 (COVID-19) vaccination programs and the introduction of vaccines such as Shingrix™. Limited experience with this technique may increase the risk of shoulder injury related to vaccine administration (SIRVA). Landmark-based techniques have not been sufficiently validated using ultrasonography. Thirty-four healthy volunteers were enrolled. Using ultrasound, we measured the distances and depths from the conventional injection site—defined as the intersection of a vertical line from the acromion and the axillary horizontal line (AHL)—to the axillary nerve, radial nerve, and subdeltoid bursa. The axillary nerve/posterior circumflex humeral artery was located 1.8 ± 1.2 cm from the AHL at a depth of 2.6 ± 1.2 cm. The inferior margin of the subdeltoid bursa was located − 0.3 ± 1.2 cm at a depth of 2.5 ± 0.4 cm. The radial nerve was located 9.4 ± 2.0 cm caudally. There were no differences between left and right. An injection site located 3.0–3.5 cm below AHL, with a needle depth < 1.7 cm, may represent a safer approach for injection. These findings provide anatomical insights that may help optimize injection techniques and potentially reduce the risk of SIRVA. Clinical trial registration: UMIN000048777.