LPB Combined With QLB Using Single-needle Technique (LPQLB-SNT) for Hip Arthroplasty (LPQLB-SNT)
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ClinicalTrials.gov Identifier: NCT04266236 |
Recruitment Status :
Recruiting
First Posted : February 12, 2020
Last Update Posted : March 15, 2023
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Condition or disease | Intervention/treatment | Phase |
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Hip Osteoarthritis Anesthesia, Local Hip Fractures Osteonecrosis of Femoral Head | Procedure: L3 LPB Procedure: L4 LPB Procedure: T12 block Procedure: L3 QLB Drug: 0.375%ropivacaine 25 ml (Raropin) Drug: 0.375%ropivacaine 40 ml (Raropin) Procedure: General anesthesia with tracheal intubation | Not Applicable |
Study Type : | Interventional (Clinical Trial) |
Estimated Enrollment : | 84 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | Double (Care Provider, Outcomes Assessor) |
Primary Purpose: | Treatment |
Official Title: | Ultrasound-guided Lumbar Plexus Combined With Quadratus Lumborum Block Using Single-needle Technique With Shamrock Method for Hip Arthroplasty |
Actual Study Start Date : | July 9, 2020 |
Estimated Primary Completion Date : | December 31, 2023 |
Estimated Study Completion Date : | December 31, 2023 |

Arm | Intervention/treatment |
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Active Comparator: L3 LPB technique (P group)
ultrasound-guided shamrock approach L3 lumbar plexus block with single-needle technique
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Procedure: L3 LPB
ultrasound-guided L3 lumbar plexus block Drug: 0.375%ropivacaine 25 ml (Raropin) 0.375%ropivacaine (Raropin) 25ml will be given Procedure: General anesthesia with tracheal intubation General anesthesia with tracheal intubation will be induced with sufentanil, propofol, vecuronium for every patient before the operation and maintained with sevoflurane during the operation |
Active Comparator: T12 combined with L3 and L4 LPB technique (TP group)
ultrasound-guided posterior approach thoracic 12 combined with L3 and L4 lumbar plexus block with mulitple-needle technique
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Procedure: L3 LPB
ultrasound-guided L3 lumbar plexus block Procedure: L4 LPB ultrasound-guided L4 lumbar plexus block Procedure: T12 block ultrasound-guided thoracic 12th segment nerve block Drug: 0.375%ropivacaine 40 ml (Raropin) 0.375%ropivacaine (Raropin) 40ml will be given Procedure: General anesthesia with tracheal intubation General anesthesia with tracheal intubation will be induced with sufentanil, propofol, vecuronium for every patient before the operation and maintained with sevoflurane during the operation |
Experimental: L3 LPB combined with QLB (LPQLB-SNT, PQ group)
ultrasound-guided shamrock approach L3 lumbar plexus block combined with quadratus lumborum block with single-needle technique
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Procedure: L3 LPB
ultrasound-guided L3 lumbar plexus block Procedure: L3 QLB ultrasound-guided quadratus lumborum block at L3 level Drug: 0.375%ropivacaine 40 ml (Raropin) 0.375%ropivacaine (Raropin) 40ml will be given Procedure: General anesthesia with tracheal intubation General anesthesia with tracheal intubation will be induced with sufentanil, propofol, vecuronium for every patient before the operation and maintained with sevoflurane during the operation |
- sensory block assessment [ Time Frame: 30 minutes after nerve block procedure ]The sensory block will be assessed by cold alcohol swab and pinprick at lateral, anterior and medial areas of thigh and postero-lateral area of gluteus using a 0 to 2 point scale. 0= no block, patients can feel cold; 1= analgesic block, patient can feel touch but not cold; 2= anesthetic block, patient cannot feel cold or touch.
- postoperative static pain at timepoint 1 [ Time Frame: at 30mins after the patient recover from general anesthesia ]Visual Analog Scale (VAS) score (0-10, 0 means no pain, 10 means the worst pain) of pain at rest will be recorded at several points of time within 24 hours after surgery: 1) 30mins after the patient recover from general anesthesia in postanesthesia care unit (PACU); 2) 6 hours after surgery;3) 12 hours after surgery; 4) 24 hours after surgery
- postoperative static pain at timepoint 2 [ Time Frame: at 6 hours after surgery ]Visual Analog Scale (VAS) score (0-10, 0 means no pain, 10 means the worst pain) of pain at rest will be recorded at several points of time within 24 hours after surgery: 1) 30mins after the patient recover from general anesthesia in postanesthesia care unit (PACU); 2) 6 hours after surgery;3) 12 hours after surgery; 4) 24 hours after surgery
- postoperative static pain at timepoint 3 [ Time Frame: at 12 hours after surgery ]Visual Analog Scale (VAS) score (0-10, 0 means no pain, 10 means the worst pain) of pain at rest will be recorded at several points of time within 24 hours after surgery: 1) 30mins after the patient recover from general anesthesia in postanesthesia care unit (PACU); 2) 6 hours after surgery;3) 12 hours after surgery; 4) 24 hours after surgery
- postoperative static pain at timepoint 4 [ Time Frame: at 24 hours after surgery ]Visual Analog Scale (VAS) score (0-10, 0 means no pain, 10 means the worst pain) of pain at rest will be recorded at several points of time within 24 hours after surgery: 1) 30mins after the patient recover from general anesthesia in postanesthesia care unit (PACU); 2) 6 hours after surgery;3) 12 hours after surgery; 4) 24 hours after surgery
- Performance time of block [ Time Frame: During nerve block procedure ]Performance time is defined as the time from insertion of the block needle (skin puncture) until finishing local anaesthetic (LA) injection
- intraoperative sufentanil dosage [ Time Frame: during the operation ]The total intraoperative sufentanil dosage will be recorded
- Incidence of block related adverse events [ Time Frame: within 24hours after nerve block procedure ]Intraoperative and postoperative adverse events such as vascular puncture, local anesthetic systemic toxicity, epidural spread, etc.
- Cumulative doses of intraoperative vasoactive medications [ Time Frame: during the operation ]Cumulative doses of intraoperative vasoactive medications (urapidil, atropine, ephedrine and deoxyepinephrine, etc.)

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Ages Eligible for Study: | 18 Years to 75 Years (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Body mass index (BMI) between 18.5 and 30kg/m2 and the weight ≥50kg
- American Society of Anesthesiologists (ASA) classification I-II
- Postero-lateral operative incision approach unilateral hip arthroplasty
- Aged 18-75
Exclusion Criteria:
- Patient refusal
- Patients with coagulopathy or on therapeutic anticoagulation
- Pregnancy
- Multiple trauma
- Hypersensitivity or allergy to ropivacaine
- History of ankylosing spondylitis or spinal surgery
- Lower extremity neuropathy
- Unable to communicate

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT04266236
Contact: xiaofeng wang | +8618930170135 | 240483680@qq.com |
China, Shanghai | |
Shanghai Jiao Tong University Affiliated Sixth People's Hospital | Recruiting |
Shanghai, Shanghai, China, 200233 | |
Contact: Xiaofeng Wang, MD +8618930170135 240483680@qq.com |
Responsible Party: | Xiaofeng WANG, Attending doctor, Shanghai 6th People's Hospital |
ClinicalTrials.gov Identifier: | NCT04266236 |
Other Study ID Numbers: |
2020-031 |
First Posted: | February 12, 2020 Key Record Dates |
Last Update Posted: | March 15, 2023 |
Last Verified: | March 2023 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | No |
Plan Description: | Data with patient identification will not be publicly accessible after the study. |
Studies a U.S. FDA-regulated Drug Product: | No |
Studies a U.S. FDA-regulated Device Product: | No |
lumbar plexus block quadratus lumorum block total hip arthroplasty single-needle shamrock approach |
Osteoarthritis, Hip Osteonecrosis Hip Fractures Osteoarthritis Arthritis Joint Diseases Musculoskeletal Diseases Rheumatic Diseases Femoral Fractures Fractures, Bone Wounds and Injuries Hip Injuries |
Leg Injuries Bone Diseases Necrosis Pathologic Processes Ropivacaine Anesthetics Central Nervous System Depressants Physiological Effects of Drugs Anesthetics, Local Sensory System Agents Peripheral Nervous System Agents |