Serratus Posterior Superior Intercostal Plane Block for Arthroscopic Shoulder Surgery

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

NA

Total Enrollment

50 participants

Study Classification

INTERVENTIONAL

Study Start Date

2025-04-10

Study Completion Date

2025-08-30

Brief Summary

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Postoperative pain is a significant problem in patients undergoing arthroscopic shoulder surgery. This situation disrupts the patient's comfort and affects the functional outcome after surgery by preventing early rehabilitation. Various methods are used for postoperative pain control. Intravenous opioid agents are one of the most commonly used analgesic techniques. However, opioids can cause undesirable side effects such as respiratory depression, sedation, constipation, allergic reactions, nausea, and vomiting. Therefore, alternative techniques are needed to reduce opioid use.

Serratus posterior superior interfascial plane block (SPSIPB) is a novel interfascial plane block described by Tulgar et al in 2023. It is based on injection into the serratus posterior superior muscle at the level of the 2nd or 3rd rib. This block provides analgesia in cases such as interscapular pain, chronic myofascial pain syndromes, scapulocostal syndrome, and shoulder pain. It has been reported that SPSIPB provides effective shoulder analgesia.

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Detailed Description

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Postoperative pain is a significant problem in patients undergoing arthroscopic shoulder surgery. This situation disrupts the patient's comfort, prevents early rehabilitation, and affects the functional outcome after surgery. Various methods are used for postoperative pain control. Intravenous opioid agents are one of the most commonly used analgesic techniques. However, opioids can cause undesirable side effects such as respiratory depression, sedation, constipation, allergic reactions, nausea, and vomiting. Therefore, alternative techniques are needed to reduce opioid use. Regional techniques can be used for postoperative pain treatment following arthroscopic shoulder surgery. Ultrasound (US)-guided serratus posterior superior block (SPSIPB) is a novel interfascial plane block described by Tulgar et al in 2023. It is based on the principle of injection into the serratus posterior superior muscle at the level of the 2nd or 3rd rib. This block provides analgesia in cases such as interscapular pain, chronic myofascial pain syndromes, scapulocostal syndrome, and shoulder pain. The SPS muscle is located at the C7-T2 level. It attaches to the lateral edges of the second and fifth ribs. It is innervated by the lower cervical and upper intercostal nerves. Analgesia is provided by blocking these nerves with the SPS block. Tulgar et al. reported in their cadaver study that the spread of the serratus posterior superior interfascial plane block; staining in the superficial fascia of the trapezius muscle was observed only on the left side at the 7-10th intercostal levels, but not on the right. There was significant staining deep in the trapezius muscle on both sides. Both the surface and the skin of the rhomboid major were clearly stained, while only the skin of the rhomboid minor was stained; SPSP block will provide successful analgesia in procedures involving the thoracic region such as breast surgery, thoracic surgery, and shoulder surgery.

In this study, the investigators aim to evaluate the analgesic efficacy of SPSIPB by comparing the control group in patients who underwent arthroscopic shoulder surgery.

Conditions

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Shoulder Pain Shoulder Injuries

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

There are two models for this study. The first group is the serratus posterior superior intercostal plane block group. The second one is the control group.

Primary Study Purpose

TREATMENT

Blinding Strategy

DOUBLE

Participants Outcome Assessors

The patient and the anesthesiologist who performs postoperative pain evaluation will not know the group.

Study Groups

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Group SPSIPB = SPSIPB group

SPSIPB will be performed

Group Type ACTIVE_COMPARATOR

SPSIPB block

Intervention Type DRUG

A high-frequency linear US probe (11-12 MHz, Vivid Q) will be covered with a sterile sheath, and an 80 mm block needle (Braun 360°) will be used. The procedure will be performed with the patient in the lateral decubitus position. After the scapula is shifted slightly laterally, the US probe is placed sagittal at the upper corner of the spina scapula, and the serratus posterior superior muscle is visualized with the third rib. The in-plane technique will be used. The block needle will be advanced in the craniocaudal direction to enter between the serratus posterior superior and the third rib. The block location will be confirmed by injecting 5 ml of saline between the rib and the muscle. After the block location is confirmed, 30 ml of 0.25% concentration bupivacaine will be used.

Postoperative analgesia management

Intervention Type DRUG

Patients will be administered ibuprofen 400 mgr IV every 8 hours in the postoperative period. A patient-controlled device prepared with 10 mcg/ ml fentanyl will be attached to all patients with a protocol including 10 mcg bolus without infusion dose, 10 min lockout time, and 4-hour limit. If the NRS score is ≥ 4, 0.5 mg kg-1 iv meperidine will be administered as a rescue analgesic. Postoperative patient evaluation will be performed by an anesthesiologist blinded to the procedure.

Group Control

Conventional analgesia management will be performed

Group Type OTHER

Postoperative analgesia management

Intervention Type DRUG

Patients will be administered ibuprofen 400 mgr IV every 8 hours in the postoperative period. A patient-controlled device prepared with 10 mcg/ ml fentanyl will be attached to all patients with a protocol including 10 mcg bolus without infusion dose, 10 min lockout time, and 4-hour limit. If the NRS score is ≥ 4, 0.5 mg kg-1 iv meperidine will be administered as a rescue analgesic. Postoperative patient evaluation will be performed by an anesthesiologist blinded to the procedure.

Interventions

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SPSIPB block

A high-frequency linear US probe (11-12 MHz, Vivid Q) will be covered with a sterile sheath, and an 80 mm block needle (Braun 360°) will be used. The procedure will be performed with the patient in the lateral decubitus position. After the scapula is shifted slightly laterally, the US probe is placed sagittal at the upper corner of the spina scapula, and the serratus posterior superior muscle is visualized with the third rib. The in-plane technique will be used. The block needle will be advanced in the craniocaudal direction to enter between the serratus posterior superior and the third rib. The block location will be confirmed by injecting 5 ml of saline between the rib and the muscle. After the block location is confirmed, 30 ml of 0.25% concentration bupivacaine will be used.

Intervention Type DRUG

Postoperative analgesia management

Patients will be administered ibuprofen 400 mgr IV every 8 hours in the postoperative period. A patient-controlled device prepared with 10 mcg/ ml fentanyl will be attached to all patients with a protocol including 10 mcg bolus without infusion dose, 10 min lockout time, and 4-hour limit. If the NRS score is ≥ 4, 0.5 mg kg-1 iv meperidine will be administered as a rescue analgesic. Postoperative patient evaluation will be performed by an anesthesiologist blinded to the procedure.

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* American Society of Anesthesiologists (ASA) classification I-II
* Scheduled for arthroscopic shoulder surgery under general anesthesia

Exclusion Criteria

* history of bleeding diathesis,
* receiving anticoagulant treatment,
* known local anesthetics and opioid allergy,
* infection of the skin at the site of the needle puncture,
* patients who do not accept the procedure

Minimum Eligible Age

18 Years

Maximum Eligible Age

75 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No