CClinicalTrials.gg
WithdrawnNCT04292392Updated Nov 4, 2020

Pain Levels and Opioid Usage in Three Nerve Block Cohorts in Primary TKA

An interventional study of preop ACB, followed by Intra-articular block during TKA surgery and preop ACB+IPACK block in Knee Arthropathy, sponsored by University of Louisville. Withdrawn at 1 site in United States. Open to participants aged 22 Years to 89 Years. Per ClinicalTrials.gov, last updated 2020-11-04.

Sponsored by University of Louisville · Not applicable, Interventional, and Basic science

Why this study was withdrawn
Final protocol and ICF has not been approved by local IRB. No subjects have been enrolled. Study will not be pursued due to current COVID-19 pandemic.
Phase
Not applicable
Study type
Interventional
Enrollment
0
Allocation
Randomized
Ages
22 Years to 89 Years
Sex
All
01

Study summary

The primary objective of this study is to compare effect of combined block of ACB (adductor canal block) with IPACK (Interspace between the Popliteal Artery and the Capsule of the posterior Knee) block and/or Intra-articular block in immediate postoperative and early postop rehabilitation and pain management in patients undergoing primary TKA. The secondary objective is to review both in-hospital and post-discharge pain levels and narcotic usage of primary TKAs, with a minimum 6-week postoperative follow-up.

02

Conditions studied

  • Knee Arthropathy

Browse trials for

03

In context

Joint Diseases

712 studies on the registry are indexed under Joint Diseases; 127 are open to participants now.

Browse Joint Diseases studies →

Lead sponsor

University of Louisville is the lead sponsor of 284 studies on the registry; 53 are open to participants now.

Of its 20 completed or terminated interventional studies of FDA-regulated products, 7 (35%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
22 Years to 89 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  1. Patient is indicated for a primary, unilateral TKA secondary to osteoarthritis.
  2. Patient age is 22-89 at time of TKA surgery.
  3. Patient agrees to participate as a study subject and signs the Informed Consent and Research Authorization document.
  4. Patient is able to read and speak English.

Exclusion criteria

Exclusion Criteria:

  1. Patient is under the age of 22 or over the age of 89.
  2. Patient's primary diagnosis is not osteoarthritis (e.g. post-traumatic arthritis).
  3. Patient is scheduled to undergo a bilateral TKA surgery.
  4. Patient is unable to read and speak English.
05

Study design

Phase
Not applicable
Primary purpose
Basic science
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Participant)
Enrollment
0 participants (actual)

Study arms

  • Experimental
    A - ACB + Periarticular Block

    Group A: patient will receive a preop ACB, followed by Intra-articular block during TKA surgery

    Other: preop ACB, followed by Intra-articular block during TKA surgery

  • Experimental
    B - ACB + IPACK Block

    Group B: patient will receive a preop ACB+IPACK block before TKA surgery only

    Other: preop ACB+IPACK block

  • Experimental
    C - ACB + IPACK + Periarticular Block

    Group C: patient will receive a preop ACB+IPACK block, followed by Intra-articular block during TKA surgery

    Other: preop ACB+IPACK block, followed by Intra-articular block during TKA surgery

Interventions

  • Otherpreop ACB, followed by Intra-articular block during TKA surgery

    Preoperative ACB (adductor canal block), followed by a local anesthetic injection during surgery, which is comprised of the following agents and amounts: * Ropivacaine 5mg/ml (49.25ml) * Epinephrine 1mg/ml (0.5ml) * Ketorolac 30mg/ml (1ml) * Clonidine 0.1mg/ml (0.8ml) * Saline 48.45ml

  • Otherpreop ACB+IPACK block

    Preoperative ACB (adductor canal block) and IPACK (Interspace between the Popliteal Artery and the Capsule of the posterior Knee) block

  • Otherpreop ACB+IPACK block, followed by Intra-articular block during TKA surgery

    Preoperative ACB (adductor canal block) and IPACK (Interspace between the Popliteal Artery and the Capsule of the posterior Knee) block, followed by a local anesthetic injection during surgery, which is comprised of the following agents and amounts: * Ropivacaine 5mg/ml (49.25ml) * Epinephrine 1mg/ml (0.5ml) * Ketorolac 30mg/ml (1ml) * Clonidine 0.1mg/ml (0.8ml) * Saline 48.45ml

06

What researchers measure

Primary outcomes

  1. total length of hospital stay

    total length of hospital stay as defined by number of days from date of surgery to date of discharge

    Time frame: outcome measure will be taken at 2 weeks postoperatively

  2. Knee Society Score

    Knee Society Score as recorded preoperatively and 6 weeks (± 2 weeks) postoperatively. The score is on a scale from 0-100. A higher value represents a better outcome

    Time frame: outcome measure will be taken preoperatively (4-6 weeks prior to date of surgery) and 6 weeks (± 2 weeks) postoperatively.]

  3. WOMAC score

    WOMAC score as recorded preoperatively and 6 weeks (± 2 weeks) postoperatively. The score is on a scale from 0-100. In contrast to the Knee Society Score, on the WOMAC a lower value represents a better outcome.

    Time frame: outcome measure will be taken preoperatively (4-6 weeks prior to date of surgery) and 6 weeks (± 2 weeks) postoperatively

  4. Visual Analog Scale

    The Visual Analog Scale measures the patient's level of knee pain on a scale of zero to ten via what the patient expresses verbally. The Visual Analog Scale (VAS) represents the degree of pain that the patient is experiencing at the time the measure is taken. Zero represents "pain-free". A 10 would represent pain so excruciating as to warrant emergency medical assistance, or as it is described to the patient, "the worst pain imaginable". Obviously, the lower the number, the better the outcome. There is no subscale.

    Time frame: outcome measure will be taken 24 hours postoperatively, 48 hours postoperatively, 72 hours postoperatively, 2 weeks (± 4 days) postoperatively, and 6 weeks (± 2 weeks) postoperatively

  5. Amount of narcotic medication utilized

    Amount of narcotic medication utilized (daily dosage measured as a Milligram Morphine Equivalent (MME) value).

    Time frame: outcome measure will be taken 24 hours postoperatively, 48 hours postoperatively, 72 hours postoperatively, 2 weeks (± 4 days) postoperatively, and 6 weeks (± 2 weeks) postoperatively

  6. Ability to rise from a chair independently

    Ability to rise from a chair independently (Yes/No)

    Time frame: outcome measure will be taken 24 hours postoperatively, 48 hours postoperatively, 72 hours postoperatively, 2 weeks (± 4 days) postoperatively, and 6 weeks (± 2 weeks) postoperatively

  7. Active range-of-motion (ROM)

    Active ROM (range-of-motion) as measured by a goniometer (range of 0-135 degrees)

    Time frame: outcome measure will be taken 24 hours postoperatively, 48 hours postoperatively, 72 hours postoperatively, 2 weeks (± 4 days) postoperatively, and 6 weeks (± 2 weeks) postoperatively

  8. Distance that patient is able to walk

    Distance that patient is able to walk, as measured in feet

    Time frame: outcome measure will be taken 24 hours postoperatively, 48 hours postoperatively, 72 hours postoperatively, 2 weeks (± 4 days) postoperatively, and 6 weeks (± 2 weeks) postoperatively

  9. Use of an ambulatory assistive device

    Use of an ambulatory assistive device (Yes/No)

    Time frame: outcome measure will be taken 24 hours postoperatively, 48 hours postoperatively, 72 hours postoperatively, 2 weeks (± 4 days) postoperatively, 6 weeks (± 2 weeks) postoperatively

  10. Incidence of postop complications

    Incidence of any postoperative complication that involves hospital readmission and/or a re-operation of the surgical knee.

    Time frame: outcome measure will be taken 6 weeks (± 2 weeks) postoperatively

07

Study locations

1 site
  • Jewish Hospital
    Louisville, Kentucky 40202, United States
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Nov 4, 2020, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04292392
Lead sponsor
University of Louisville
Responsible party
Arthur Malkani (Professor, Adult Reconstruction, Dept. of Orthopaedic Surgery, University of Louisville) — Principal investigator
First posted
Mar 3, 2020
Start date
Apr 6, 2020
Primary completion
Aug 15, 2020
Completion
Sep 30, 2020
Last update
Nov 4, 2020

Study contacts

Arthur L Malkani, MD
principal investigator · University of Louisville

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is withdrawn, as verified in Nov 2020. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion