NCT06240884

Postoperative Analgesic Effect of Infraspinatus-teres Minor Inter-fascial Block in Patients Undergoing Shoulder Surgery

Comparison of Ultrasound-guided Infraspinatus Tubercle Muscle (ITM) Interfascial Block and Interosseous Groove Nerve Block (ISB) for Postoperative Pain Management After Shoulder Arthroscopy: a Randomised, Non-inferiority Study

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 74 (actual)
• Sponsor: Affiliated Hospital of Jiaxing University · Academic / Other
• Sex: All
• Age: 18 Years – 80 Years
• Healthy volunteers: Accepted

Summary

It is proposed to investigate the effectiveness of ultrasound-guided intertrochanteric block of the infraspinatus minor round myofascial block not inferior to the interosseous groove brachial plexus nerve block in postoperative analgesia and overall quality of recovery in shoulder surgery.

Detailed description

Intersulcus brachial plexus nerve block is considered to be the best method for pain nerve block after shoulder joint surgery. It can not only effectively reduce the postoperative pain and discomfort of patients, but also reduce the intraoperative demand for opioids. However, the use of intermuscular brachial plexus block should be prohibited when the patient has a clotting disorder or is taking anticoagulant drugs, has a local infection or a systemic infection. There may also be anesthesia risks such as nerve damage, vascular damage, respiratory depression, and diaphragmatic paralysis with dyspnea. Infraspinatus-teres minor (ITM), first proposed by Shin Hyung Kim, is a single-site injection in the interfascial plane between Infraspinatus and teres minor. Once the IS and Tm on the humeral head area are identified, by moving the probe mediocaudally, the interfascial structure of the IS and Tm can be traced along the glenohumeral joint, scapular neck area. On autopsy, local anesthetics were found to have spread to the suprascapular and axillary nerves. This result suggests that interfascia block injection of local anesthetics between the infraspinatus and teres minor muscles may help relieve pain in the upper shoulder, back, and external sensory areas. At present, there are few clinical reports on the use of infraspinatus-teres minor interfascial block for postoperative analgesia of shoulder joint, and the postoperative analgesia effect is only reported in individual cases, without comparison with other nerve blocks There are few studies on the clinical application of ITM block, but ISB has become the best method for postoperative analgesia of shoulder joint surgery. the investigators designed a prospective, randomized controlled, non-inferior study to investigate the efficacy of ultrasound-guided subaspina-teres minor interfascial block in analgesia and overall quality of recovery after shoulder joint surgery. The primary outcome indicator was the area under the NRS curve at rest in the 0-24h postoperative period

Conditions

• Shoulder Pain

Interventions

Type	Name	Description
PROCEDURE	Infraspinatus-teres minor interfascial block	After identifying the infraspinatus and teres minor muscles on the posterior surface of the scapular neck. Under real-time ultrasound guidance, the needle is advanced into the interfascial plane between the infraspinatus and teres minor muscles using an in-plane technique, and after confirming the fascial opening with 3 to 5 mL of 0.375% ropivacaine (20 mL total dose), the remaining 0.375% ropivacaine is injected. After extubation and the patients were awake, anesthesiologists who were unaware of the study subgroups began to assess the analgesic effect of the patients' block at rest using the numeric pain rating scale (NRS) at 0.5h, 3h, 6h, 12h, 18h, 24h, and 48h postoperatively.
PROCEDURE	interscalene block	The tip of the needle was placed between the C5 and C6 nerve roots, and after a bloodless retraction with 0.5 to 1 ml of 0.375% ropivacaine to confirm nerve displacement, the remaining 0.375% ropivacaine was injected (total dose of 20 ml). Subsequently, the catheter was inserted over the needle and the needle was withdrawn.After extubation and the patients were awake, anesthesiologists who were unaware of the study subgroups began to assess the analgesic effect of the patients' block at rest using the numeric pain rating scale (NRS) at 0.5h, 3h, 6h, 12h, 18h, 24h, and 48h postoperatively.

Timeline

• Start date: 2023-12-08
• Primary completion: 2024-04-05
• Completion: 2024-04-12
• First posted: 2024-02-05
• Last updated: 2024-07-03

Locations

1 site across 1 country: China