Migration rate of proximal adductor canal block catheters placed parallel versus perpendicular to the nerve after total knee arthroplasty: a randomized controlled study
Authors' conclusion
Parallel 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.
Study context
- Population
- Patients scheduled for unilateral primary total knee arthroplasty receiving continuous proximal adductor canal block67 analysed
- Participants
- 70 patients
- Comparison
- Parallel vs Perpendicular
- Paralleln = 34
- Perpendicularn = 33reference
- Primary endpoint
- ACB catheter migration rate (unable to confirm saline around the saphenous nerve at mid-thigh under ultrasound)
- Follow-up
- POD 2
Primary result
As reported in the abstract
P < 0.001
Secondary outcomes
Active knee flexion ROM · POD 1
P = 0.011
Passive knee flexion ROM · POD 1
P = 0.004
Active knee flexion ROM · POD 2
P = 0.036
Passive knee flexion ROM · POD 2
P = 0.045
Original publication
Migration rate of proximal adductor canal block catheters placed parallel versus perpendicular to the nerve after total knee arthroplasty: a randomized controlled study. Reg Anesth Pain Med. Published 28 March 2023. doi:10.
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