Trial reportRegional anesthesia and pain medicine2023
Migration rate of proximal adductor canal block catheters placed parallel versus perpendicular to the nerve after total knee arthroplasty: a randomized controlled study.
Trial report in Regional anesthesia and pain medicine, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07681622 (Migration Rate for Continuous Adductor Canal Block Catheters After Primary Total Knee Arthroplasty Surgery), which is not on this map. Cited by 7 papers, 1 of them a synthesis that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Migration Rate for Continuous Adductor Canal Block Catheters After Primary Total Knee Arthroplasty Surgery: a Comparison Between the Interfascial Plane Between SArtorious Muscle and FEmoral Artery (ISAFE) and the Out Of Plane Parallel to Saphenous Nerve (OOPS) Techniques: The ISAFE x OOPS Trial
Who cites it
7 citing papers in PubMed, 1 synthesis or guideline pooled it, 16 citations in OpenAlex.
- Does Proximal Adductor Canal Block Provide Better Analgesic Efficacy than Distal Adductor Canal Block in Patients Undergoing Knee Arthroplasty: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.Orthopaedic surgery · 2024Pooled it
- Continuous adductor canal block versus continuous femoral nerve block for analgesia after open reduction and internal fixation of patellar fractures: a randomized controlled trial.BMC anesthesiology · 2026Trial
- Continuous Infusion Pressure Measurement in Predefined Interfascial and Intramuscular Tissue Conditions: An Ex Vivo Pilot Study.Journal of clinical medicine · 2026Article
- Effective Thoracoabdominal Pain Management Using Dual Epidural Catheter Placement in Esophageal Reconstruction: A Case Report.Reports (MDPI) · 2025Article
- Does parallel versus perpendicular catheter placement for a subsartorius approach to a continuous adductor canal block influence injectable distribution? A comparative cadaveric study.Indian journal of anaesthesia · 2025Article
- Analgesic efficacy and safety of methylene blue combined with cocktail for periarticular infiltration following total knee arthroplasty: a prospective, randomized, controlled study.Perioperative medicine (London, England) · 2025Article
- The Role of Genicular Nerve Blocks in Enhancing Postoperative Pain Management After Total Knee Arthroplasty: A Retrospective Study.Anesthesiology research and practice · 2025Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundPerineural catheters placed parallel to the nerve course are reported to have lower migration rates than those placed perpendicular to it. However, catheter migration rates for a continuous adductor canal block (ACB) remain unknown. This study compared postoperative migration rates of proximal ACB catheters placed parallel and perpendicular to the saphenous nerve.
methodsSeventy participants scheduled for unilateral primary total knee arthroplasty were randomly assigned for parallel or perpendicular placement of the ACB catheter. The primary outcome was the migration rate of the ACB catheter on postoperative day (POD) 2. Catheter migration was defined as being unable to confirm saline administration via the catheter around the saphenous nerve at the mid-thigh level under ultrasound guidance. Secondary outcomes included active and passive range of motion (ROM) of the knee on postoperative rehabilitation.
resultsSixty-seven participants were included in the final analyses. The catheter migrated significantly less often in the parallel group (5 of 34 (14.7%)) than in the perpendicular group (24 of 33 (72.7%)) (p<0.001). The mean (SD) active and passive knee flexion ROM (degrees) improved significantly in the parallel than in the perpendicular group (POD 1: active, 88.4 (13.2) vs 80.0 (12.4), p=0.011; passive, 95.6 (12.8) vs 85.7 (13.6), p=0.004; POD 2: active, 88.7 (13.4) vs 82.2 (11.5), p=0.036; passive, 97.2 (12.8) vs 91.0 (12.0), p=0.045).
conclusionParallel placement of the ACB catheter provided a lower postoperative catheter migration rate than perpendicular placement of the ACB catheter along with corresponding improvements in ROM and secondary analgesic outcomes. TRIAL REGISTRATION NUMBER: UMIN000045374.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.