Analgesic Effect of Adding an Adductor Canal Block to a Femoral Triangle Block for Total Knee Replacement

A Randomised Controlled Trial Investigating the Addition of an Adductor Canal Block to a Femoral Triangle Block for Analgesia After Total Knee Replacement

Status

Completed

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT03461679

Enrollment

Registered

2018-03-12

Start date

2018-02-22

Completion date

2020-03-31

Last updated

2020-10-08

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Total Knee Replacements

Brief summary

The aim of the study is to investigate whether the addition of an adductor canal block to a femoral triangle block will provide better analgesia for patients after total knee replacements.

Interventions

PROCEDUREAdductor canal block

Single shot block with 0.5% bupivacaine 10mls

PROCEDUREFemoral triangle block

Single shot block with 0.5% bupivacaine 10mls

Study design

Allocation

RANDOMIZED

Intervention model

PARALLEL

Primary purpose

TREATMENT

Masking

TRIPLE (Subject, Caregiver, Outcomes Assessor)

Intervention model description

RCT

Eligibility

Sex/Gender

ALL

Age

45 Years to No maximum

Healthy volunteers

Yes

Inclusion criteria

* Patients undergoing total knee arthroplasty under spinal anaesthesia * 45y or older * ASA 1-3 * BMI 18-35

Exclusion criteria

* Unable to consent * Chronic opioid consumption * Allergy to study medication * Lower limb surgery preceding year * Unable to complete baseline testing, pre-existing neurological deficit * Contraindication to spinal anaesthesia

Design outcomes

Primary

Measure	Time frame	Description
Opioid consumption	24 hours	Morphine

Secondary

Measure	Time frame	Description
Muscle strength	24 hours	measured with dynanometer
Time to up and go test	24 hours	Time to get up from chair, walk 3 meters and return to chair
30 Chair stand test	24 hours	Number of times a patient can stand up from sitting position in 30 seconds

Countries

Singapore

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026