比较Endobutton带袢钛板（Endobutton titanium plate，ETP）与锁骨钩钢板（clavicular hook plate, CHP）治疗肩锁关节脱位（acromioclavicular joint dislocation，AJD）病例的疗效。

选取2017年6月至2021年5月在本科室采用ETP与CHP治疗的Rockwood Ⅲ~Ⅴ型AJD患者46例作为研究对象。根据手术治疗方法分为CHP内固定组（对照组，n=22）和ETP固定组（观察组，n=24）。对两组患者的手术时间，术中出血量，住院天数，并发症发生率，术前、术后3 d、术后3个月及术后12个月患者疼痛和肩关节功能，术后12个月AJD复位情况进行比较。

两组患者手术时间、手术中出血量、术后内固定失败、肩峰撞击和异位骨化发生率差异无统计学意义（P>0.05），而观察组术后住院天数少于对照组（P<0.05），观察组术后肩部疼痛和并发症合计发生率低于对照组（P<0.05）。两组患者术前和术后12个月疼痛视觉模拟评分（visual analogue scale，VAS）差异无统计学意义（P>0.05）；而观察组术后3 d和术后3个月疼痛VAS评分低于对照组（P<0.05）。观察组术后3个月肩关节功能Constant-Murley评分高于对照组（P<0.05）。两组患者术后12个月肩关节功能恢复良、可、差率之间差异无统计学意义（P>0.05）；观察组术后12个月肩关节功能恢复的优良率显著高于对照组（P<0.05）；术后12个月两组患者喙锁间隙测量观察组（8.2±1.7）mm，对照组（8.1±1.8）mm，两组间差异无统计学意义（P>0.05）。

ETP治疗AJD的临床疗效在肩部疼痛等并发症发生率、术后减轻患者疼痛以及关节功能恢复方面效果均相对优于CHP治疗。

Acromioclavicular joint dislocation (AJD) is one of the most common shoulder injuries, accounting for about 12% of Shoulder joint injuries. It will mainly cause the shoulder joint to feel pain and movement restrictions during exercise, which will cause inconvenience to the patient's work and life. Therefore, the treatment of this injury is also critical. At present, many doctors and patients have affirmed the clinical efficacy of clavicular hook plate (CHP) internal fixation in the treatment of AJD. However, this method is also prone to complications such as shoulder joint pain. In recent years, the Endobutton titanium plate (ETP) has been used to treat AJD injury and has achieved good therapeutic results. But there is no consensus on the effectiveness of these two methods.

To compare the case curative effect between ETP and CHP in treating AJD.

From June 2017 to May 2021, 46 patients with Rockwood typeⅢ-ⅤAJD treated with ETP and CHP in our department were selected as the research objects. According to the surgical treatment methods, they were divided into CHP internal fixation group (control group, n=22) and ETP fixation group (observation group, n=24) ; The operation time, intraoperative bleeding, length of hospital stays, incidence of complications, of pain before operation, three days, three months and 12 months after procedure, shoulder function and acromioclavicular dislocation reduction six months after operation were compared between the two groups.

There was no difference in operation time, intraoperative bleeding, postoperative internal fixation failure, acromion impact, and heterotopic ossification between the two groups (P>0.05) . In contrast, the postoperative hospital stay in the observation group was less than that in the control group (P < 0.05) . The postoperative shoulder pain and total incidence of complications in the observation group were lower than that in the control group (P<0.05) . There was no significant difference in pain visual analogue scale (VAS) score between the two groups before the operation and 12 months after the procedure (P>0.05) ; The pain VAS score of the observation group was lower than that of the control group three days and three months after operation (P<0.05) . The shoulder function Constant-Murley score of the observation group was higher than that of the control group 3 months after the operation (P<0.05) . There was no significant difference in the sound, moderate, and poor recovery rate of shoulder joint function between the two groups 12 months after the operation (P>0.05) ; The excellent and excellent rate of shoulder function recovery in the observation group 12 months after operation was significantly higher than that in the control group (P< 0.05) ; There was no significant difference in the distance from clavicle to coracoid process between the two groups 12 months after operation (P>0.05) .

The Endobutton plate's clinical efficacy in treating acromioclavicular joint dislocation is relatively better than that of the clavicular hook plate in the incidence of shoulder pain and other complications, postoperative pain relief, and joint function recovery.