Lateral epicondylitis is a relatively common non-traumatic elbow disorder. It is a painful musculoskeletal condition that usually follows forceful repetitive pronation and supination. The aim of this study was to evaluate the advantages of ultrasound-guided injection in patients of Lateral Epicondylitis in comparison to non-image-guided blind injections. This comparative observational study was conducted on sixty patients who had clinical diagnosis of Lateral Epicondylitis. They were divided into two groups of thirty each (randomization done on odd even manner), one group underwent US-guided injections and the other group underwent the blind procedure by a specialist. Pain relief using the Visual Analog Scale (VAS) {score of 0–10} was recorded before the procedure, immediately after the procedure, one-week post-procedure, and six weeks post-procedure. Demographic characteristics, chief complaints, duration of symptoms, previous treatment taken, and complications post-procedure were gathered and compared between the two groups. All patients in both groups finished the period of study. Significant improvement in pain score and tenderness was found in both groups immediately after the injection, one-week post-procedure, and after six weeks post-procedure when compared to the baseline value (p value < 0.05). The US-guided group showed a better reduction in VAS scores immediately after the procedure and one-week post-procedure as compared to patients who were given blind injections, however no statistical difference was found at six weeks follow up. This study shows that US-guided injection relatively improves elbow pain and functional activities early and more effectively than blind/non-image-guided injections, although such results fade as time passes by.

外上髁炎是一种相对常见的非创伤性肘部疾病。这是一种痛苦的肌肉骨骼疾病，通常发生在用力重复内旋和外旋之后。本研究的目的是评估与非图像引导盲目注射相比，超声引导注射对于肱骨外上髁炎患者的优势。这项比较观察性研究是对 60 名临床诊断为肱骨外上髁炎的患者进行的。他们被分为两组，每组三十人（以奇偶方式随机化），一组接受超声引导注射，另一组接受专家的盲法注射。使用视觉模拟量表 (VAS) {评分为 0-10} 记录手术前、手术后立即、手术后一周和手术后六周的疼痛缓解情况。收集并比较两组之间的人口统计学特征、主诉、症状持续时间、之前接受的治疗以及术后并发症。两组所有患者均完成了研究期。与基线值相比，两组在注射后立即、术后一周和术后六周后疼痛评分和压痛均有显着改善（p 值 < 0.05）。与接受盲注的患者相比，美国引导组在手术后立即和手术后一周表现出更好的 VAS 评分下降，但在六周随访时没有发现统计学差异。这项研究表明，与盲目/非图像引导注射相比，超声引导注射可以更早、更有效地相对改善肘部疼痛和功能活动，尽管这种效果会随着时间的推移而逐渐消失。