中文摘要：

目的 探讨超声引导下第5颈椎横突后结节（PTFCV）处阻滞肩胛背神经（DSN）的可行性。方法 对20例单侧肩胛间区疼痛患者行超声检查，观察PTFCV及DSN，测量PTFCV距皮肤的垂直距离。并于PTFCV处行超声引导下DSN阻滞。记录操作时间、术中及术后并发症，并以疼痛缓解程度评估治疗效果。结果 通过超声可准确识别所有患者的PTFCV，PTFCV距皮肤表面垂直距离为（1.09±0.22）cm。20例中，仅8例（8/20，40.00%）的DSN可被超声识别。对20例（20/20，100%）患者均成功实施超声引导下DSN阻滞，操作时间（9.05±0.41）min。术后患者疼痛缓解率为（70.92±17.15）%。未出现明显的术中及术后并发症。结论 超声引导下于PTFCV处阻滞DSN省时、易行，且安全、有效。

英文摘要：

Objective To evaluate the feasibility of dorsal scapular nerve （DSN） block on the surface of posterior tubercle of the fifth cervical vertebra （PTFCV） under ultrasound guidance. Methods Ultrasonography was performed on 20 patients with interscapular pain to assess the PTFCV and DSN. The vertical distance between PTFCV and the skin was measured. DSN block on the surface of PTFCV was guided by ultrasound. The procedure duration, intraoperative and postoperative complications were recorded. The effect was evaluated by pain relief rate. Results The PTFCVs of all cases were clearly visible, and the vertical mean distance from the skin surface to PTFCV was （1.09±0.22）cm. The DSNs of 8 cases （8/20, 40.00%） could be seen with ultrasound guidance. DSN block was performed successfully in all 20 cases （20/20, 100%） under ultrasound guidance. The mean procedure duration was （9.05±0.41）min. The postoperative pain relief rate was （70.92±17.15）%. No obvious intraoperative and postoperative complication occurred. Conclusion Blocked DSN on the surface of PTFCV is proved feasible because of the advantages of timesaving, safety and effectivity.