ClinicalTrials.gg
TerminatedNCT02161484Updated Mar 29, 2018Results posted

Continuous Lumbar Plexus Block With and Without Parasacral Block in Patients Undergoing Total Hip Replacement

An interventional study of Continuous Lumbar Plexus Block and Parasacral Nerve Block in Osteoarthritis of Hip, Regional Anesthesia and Other Acute Postoperative Pain, sponsored by Rita Merman. Terminated at 1 site in United States. Open to participants aged 18 Years to 75 Years. Per ClinicalTrials.gov, last updated 2018-03-29.

Sponsored by Rita Merman · Not applicable, Interventional, and Treatment

Why this study was terminated
The computer is crushed and all data is lost (IT was not able to recover it. Last data was collected 6.17.14)
Phase
Not applicable
Study type
Interventional
Enrollment
10
Allocation
Randomized
Ages
18 Years to 75 Years
Sex
All
01

Study summary

The purpose of this research study is to evaluate the analgesic efficacy of adding a single shot parasacral (sciatic) nerve block to a continuous lumbar plexus block in patients undergoing total hip replacement.

Read the detailed description

This prospective study is intended to assess the efficacy of placing a parasacral (sciatic) nerve block in addition to a lumbar plexus block for postoperative analgesia following total hip arthroplasty. Although the placement of a lumbar plexus block alone has become accepted as the standard of care at UPMC for postoperative analgesia following total hip arthroplasty, the addition of a parasacral (sciatic) nerve block may provide the advantage of blocking the superior gluteal nerve and nerve to the quadratus femoris which both supply small articular sensory branches to the posterior hip capsule.

02

Conditions studied

  • Osteoarthritis of Hip
  • Regional Anesthesia
  • Other Acute Postoperative Pain
  • Total Hip Arthroplasty
  • Peripheral Nerve Block
  • Lumbar Plexus Nerve Block
  • Parasacaral (Sciatic) Nerve Block

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Keywords

  • Peripheral Nerve Block
  • Total Hip Replacement
03

In context

Osteoarthritis, Hip

642 studies on the registry are indexed under Osteoarthritis, Hip; 122 are open to participants now.

This study's enrollment of 10 is below the median of 90 across 458 interventional studies indexed under Osteoarthritis, Hip.

Browse Osteoarthritis, Hip studies →

Lead sponsor

This is the only study on the registry with Rita Merman as lead sponsor.

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

04

Who can participate

Ages eligible
18 Years to 75 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  1. Subject has signed and dated an Informed Consent Form.
  2. Subject is classified as a ASA (American Society of Anesthesiologists) status I-III
  3. Subject is age 18- 75 years old.
  4. Subject is having primary total hip arthroplasty
  5. No contraindication to peripheral nerve catheter ( local infection or hypocoagulable state)
  6. Patient willing to receive spinal anesthesia as operative anesthesia
  7. No known drug allergies to study medications
  8. Patients not expected to receive therapeutic anticoagulation in the postoperative period.

Exclusion criteria

Exclusion Criteria:

  1. Subject inability to provide adequate informed consent.
  2. Age younger than 18 years or older than 75 years
  3. Any contraindication to the placement of lumbar plexus catheter, including local infection, hypocoagulable state.
  4. ASA (American Society of Anesthesiologists) physical status of IV or greater
  5. Any chronic painful conditions
  6. Preoperative opioid use
  7. Coagulation abnormalities or patients who are expected to be on therapeutic anticoagulants postoperatively
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Care provider)
Enrollment
10 participants (actual)

Study arms

  • Experimental
    Continuous Lumbar Plexus Block with Parasacral Nerve Block

    Lumbar plexus nerve block placement and activation: After subcutaneous infiltration of local anesthetic, 20 mL of Ropivacaine 0.2% will be injected; the catheter will be introduced for 5 cm past the needle tip and secured with steri strips and tegaderm. In PACU, the catheter will be connected to a pump of 0.0625% bupivacaine at 5 - 10 mL per hour at the discretion of the Acute Interventional Perioperative Pain Service (AIPPS). Additional 5mL boluses of 0.0625% bupivacaine will be given on demand once per hour prn. A single shot parasacral (sciatic) nerve block will then be place under the ultrasound guidance. Ropivacaine 0.2% 9 ml will be injected.

    Procedure: Continuous Lumbar Plexus Block · Procedure: Parasacral Nerve Block · Drug: Ropivacine 0.2% · Drug: Bupivacaine 0.0625%

  • Active comparator
    Lumbar Plexus Nerve Block

    Lumbar plexus nerve block placement and activation: After subcutaneous infiltration of local anesthetic, 20 mL of Ropivacaine 0.2% will be injected; the catheter will be introduced for 5 cm past the needle tip and secured with steri strips and tegaderm. In PACU, the catheter will be connected to a pump of 0.0625% bupivacaine at 5 - 10 mL per hour at the discretion of the Acute Interventional Perioperative Pain Service (AIPPS). Additional 5mL boluses of 0.0625% bupivacaine will be given on demand once per hour prn. No sham/placebo parasacral (sciatic) blocks will be performed in this group.

    Procedure: Continuous Lumbar Plexus Block · Drug: Ropivacine 0.2% · Drug: Bupivacaine 0.0625%

Interventions

  • ProcedureContinuous Lumbar Plexus Block

    Lumbar plexus nerve block placement and activation: After subcutaneous infiltration of local anesthetic, 20 mL of Ropivacaine 0.2% will be injected; the catheter will be introduced for 5 cm past the needle tip and secured with steri strips and tegaderm. In PACU, the catheter will be connected to a pump of 0.0625% bupivacaine at 5 - 10 mL per hour at the discretion of the Acute Interventional Perioperative Pain Service (AIPPS). Additional 5mL boluses of 0.0625% bupivacaine will be given on demand once per hour prn.

  • ProcedureParasacral Nerve Block

    A single shot parasacral (sciatic) nerve block will then be place under the ultrasound guidance. Ropivacaine 0.2% 9 ml will be injected.

    Also known as: Sciatic Nerve Block

  • DrugRopivacine 0.2%

    Lumbar plexus nerve block placement and activation: After subcutaneous infiltration of local anesthetic, 20 mL of Ropivacaine 0.2% will be injected; the catheter will be introduced for 5 cm past the needle tip and secured with steri strips and tegaderm.

  • In PACU, the catheter will be connected to a pump of 0.0625% bupivacaine at 5 - 10 mL per hour at the discretion of the Acute Interventional Perioperative Pain Service (AIPPS). Additional 5mL boluses of 0.0625% bupivacaine will be given on demand once per hour prn.

06

What researchers measure

Primary outcomes

  1. Numeric Rating Scale (NRS) Pain Assessment

    Postoperative pain assessments using a 11-point numerical rating during physical therapy and at rest. This pain scale ranges from 0, being no pain at all, up to 10 being the worst pain ever experience.

    Time frame: 6 hours after the start of surgery

  2. Numeric Rating Scale (NRS) Pain Assessment

    Postoperative pain assessments using a 11-point numerical rating during physical therapy and at rest. This pain scale ranges from 0, being no pain at all, up to 10 being the worst pain ever experience.

    Time frame: 24 hours after the start of surgery

  3. Numeric Rating Scale (NRS) Pain Assessment

    Postoperative pain assessments using a 11-point numerical rating during physical therapy and at rest. This pain scale ranges from 0, being no pain at all, up to 10 being the worst pain ever experience.

    Time frame: 48 hours after the start of surgery

Secondary outcomes

  1. Number of Rescue Boluses Administered by Nurse (IV Dilaudid) Post Operatively

    Time frame: 48 hours after the start of the surgery

  2. Amount of Oxycodone for the First 48 h Post Operatively

    Including number of dose and mg).

    Time frame: 48 hours after the start of the surgery

  3. Total Dilaudid or Opiate Equivalent Consumed (mg) Over 48 Hours Post Operatively

    Time frame: 48 hours after the start of the surgery

  4. Number of Nerve Block Boluses (Bupivacaine) Administered by the Nurse Post Operatively

    Time frame: 48 hours after the start of the surgery

  5. Total Amount of Local Anesthetic in 48 Hours Post Operatively

    Combined amount of Bupivacaine Boluses + Continuous infusion in (cc)

    Time frame: 48 hours after the start of the surgery

Other outcomes

  1. Incidence of Complications (e.g. Frequency of Foot-drop).

    Complications such as drug toxicity, arrhythmia, bradycardia, hematoma, "Foot Drop", allergic reaction will be recorded

    Time frame: 48 hours after the start of the surgery

07

Results

Posted Mar 29, 2018

Participant flow

Participant flow — Overall Study
MilestoneContinuous Lumbar Plexus Block With Parasacral Nerve BlockLumbar Plexus Nerve Block
Started55
Completed12
Not completed43

Outcome measures

PrimaryNumeric Rating Scale (NRS) Pain Assessment

Postoperative pain assessments using a 11-point numerical rating during physical therapy and at rest. This pain scale ranges from 0, being no pain at all, up to 10 being the worst pain ever experience.

Time frame:
6 hours after the start of surgery
Reported as:
Mean · units on a scale
Numeric Rating Scale (NRS) Pain Assessment
units on a scaleContinuous Lumbar Plexus Block With Parasacral Nerve BlockLumbar Plexus Nerve Block
Pain at Rest2.6 ± 2.193.6 ± 1.67
Pain with Movement3.5 ± 1.675 ± 1.87
PrimaryNumeric Rating Scale (NRS) Pain Assessment

Postoperative pain assessments using a 11-point numerical rating during physical therapy and at rest. This pain scale ranges from 0, being no pain at all, up to 10 being the worst pain ever experience.

Time frame:
24 hours after the start of surgery
Reported as:
Mean · units on a scale
Numeric Rating Scale (NRS) Pain Assessment
units on a scaleContinuous Lumbar Plexus Block With Parasacral Nerve BlockLumbar Plexus Nerve Block
Pain at Rest4.25 ± 2.752.2 ± 1.92
Pain with Movement7.25 ± 2.54.4 ± 0.89
PrimaryNumeric Rating Scale (NRS) Pain Assessment

Postoperative pain assessments using a 11-point numerical rating during physical therapy and at rest. This pain scale ranges from 0, being no pain at all, up to 10 being the worst pain ever experience.

Time frame:
48 hours after the start of surgery
Reported as:
Mean · units on a scale
Numeric Rating Scale (NRS) Pain Assessment
units on a scaleContinuous Lumbar Plexus Block With Parasacral Nerve BlockLumbar Plexus Nerve Block
Pain at Rest1 ± 02 ± 1.14
Pain with Movement8 ± 05 ± 1.41
SecondaryNumber of Rescue Boluses Administered by Nurse (IV Dilaudid) Post Operatively
Time frame:
48 hours after the start of the surgery

No measurements were reported for this outcome.

SecondaryAmount of Oxycodone for the First 48 h Post Operatively

Including number of dose and mg).

Time frame:
48 hours after the start of the surgery

No measurements were reported for this outcome.

SecondaryTotal Dilaudid or Opiate Equivalent Consumed (mg) Over 48 Hours Post Operatively
Time frame:
48 hours after the start of the surgery

No measurements were reported for this outcome.

SecondaryNumber of Nerve Block Boluses (Bupivacaine) Administered by the Nurse Post Operatively
Time frame:
48 hours after the start of the surgery

No measurements were reported for this outcome.

SecondaryTotal Amount of Local Anesthetic in 48 Hours Post Operatively

Combined amount of Bupivacaine Boluses + Continuous infusion in (cc)

Time frame:
48 hours after the start of the surgery

No measurements were reported for this outcome.

Other pre-specifiedIncidence of Complications (e.g. Frequency of Foot-drop).

Complications such as drug toxicity, arrhythmia, bradycardia, hematoma, "Foot Drop", allergic reaction will be recorded

Time frame:
48 hours after the start of the surgery
Reported as:
Number · Number of complications
Incidence of Complications (e.g. Frequency of Foot-drop).
Number of complicationsContinuous Lumbar Plexus Block With Parasacral Nerve BlockLumbar Plexus Nerve Block
Incidence of Complications (e.g. Frequency of Foot-drop).00

Adverse events

Collected over From enrollment until 48 hours post-operatively or discharge from the hospital, whichever occurs first. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Continuous Lumbar Plexus Block With Parasacral Nerve Block0/5 (0%)0/5 (0%)0/5 (0%)
Lumbar Plexus Nerve Block0/5 (0%)0/5 (0%)0/5 (0%)

Baseline characteristics

Age, Continuous
Age, Continuous(years)Continuous Lumbar Plexus Block With Parasacral Nerve BlockLumbar Plexus Nerve BlockTotal
Mean56.8 ± 2.8658.6 ± 7.6757.7 ± 5.54
Sex: Female, Male
Sex: Female, Male(Participants)Continuous Lumbar Plexus Block With Parasacral Nerve BlockLumbar Plexus Nerve BlockTotal
Female246
Male314
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)Continuous Lumbar Plexus Block With Parasacral Nerve BlockLumbar Plexus Nerve BlockTotal
Hispanic or Latino000
Not Hispanic or Latino5510
Unknown or Not Reported000
Race (NIH/OMB)
Race (NIH/OMB)(Participants)Continuous Lumbar Plexus Block With Parasacral Nerve BlockLumbar Plexus Nerve BlockTotal
American Indian or Alaska Native000
Asian000
Native Hawaiian or Other Pacific Islander000
Black or African American000
White5510
More than one race000
Unknown or Not Reported000
Region of Enrollment
Region of Enrollment(participants)Continuous Lumbar Plexus Block With Parasacral Nerve BlockLumbar Plexus Nerve BlockTotal
United States5510
08

Study locations

1 site
  • UPMC Presbyterian Shadyside
    Pittsburgh, Pennsylvania 15232, United States
09

References and documents

Publications

  • Ben-Ari AY, Joshi R, Uskova A, Chelly JE. Ultrasound localization of the sacral plexus using a parasacral approach. Anesth Analg. 2009 Jun;108(6):1977-80. doi: 10.1213/ane.0b013e3181a04d8e. PubMed 19448235 ↗
  • Ho AM, Karmakar MK. Combined paravertebral lumbar plexus and parasacral sciatic nerve block for reduction of hip fracture in a patient with severe aortic stenosis. Can J Anaesth. 2002 Nov;49(9):946-50. doi: 10.1007/BF03016880. PubMed 12419722 ↗
  • Morris GF, Lang SA, Dust WN, Van der Wal M. The parasacral sciatic nerve block. Reg Anesth. 1997 May-Jun;22(3):223-8. doi: 10.1016/s1098-7339(06)80005-2. PubMed 9168212 ↗
  • Wiegel M, Gottschaldt U, Hennebach R, Hirschberg T, Reske A. Complications and adverse effects associated with continuous peripheral nerve blocks in orthopedic patients. Anesth Analg. 2007 Jun;104(6):1578-82, table of contents. doi: 10.1213/01.ane.0000261260.69083.f3. PubMed 17513661 ↗
  • Ilfeld BM, Mariano ER, Madison SJ, Loland VJ, Sandhu NS, Suresh PJ, Bishop ML, Kim TE, Donohue MC, Kulidjian AA, Ball ST. Continuous femoral versus posterior lumbar plexus nerve blocks for analgesia after hip arthroplasty: a randomized, controlled study. Anesth Analg. 2011 Oct;113(4):897-903. doi: 10.1213/ANE.0b013e318212495b. Epub 2011 Apr 5. PubMed 21467563 ↗
  • Marino J, Russo J, Kenny M, Herenstein R, Livote E, Chelly JE. Continuous lumbar plexus block for postoperative pain control after total hip arthroplasty. A randomized controlled trial. J Bone Joint Surg Am. 2009 Jan;91(1):29-37. doi: 10.2106/JBJS.H.00079. PubMed 19122076 ↗
10

Timeline

Tracking since Sep 25, 2026
Not marked actual or estimatedDates not marked actual or estimated

The record gives a start of Jan 2014, a primary completion of Jun 2014 and a completion of Jun 2014. It does not say whether these dates are actual or estimated.

Results were first posted in Mar 2018, 3 years 9 months after primary completion.

How these figures are worked out, and which studies are left out of them.

Registered
Jun 2, 2014
First posted
Jun 11, 2014
Start
Jan 2014
Primary completionActual
Jun 17, 2014
CompletionActual
Jun 17, 2014
Results first posted
Mar 29, 2018
Last update
Mar 29, 2018
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Mar 29, 2018, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT02161484
Lead sponsor
Rita Merman
Responsible party
Rita Merman (MD, University of Pittsburgh) — Sponsor-investigator
First posted
Jun 11, 2014
Start date
Jan 2014
Primary completion
Jun 17, 2014
Completion
Jun 17, 2014
Results posted
Mar 29, 2018
Last update
Mar 29, 2018

Study contacts

Rita Merman, MD
principal investigator · UPMC Presbyterian Shadyside
Jacques E. Chelly, MD, PhD, MBA
study chair · UPMC Presbyterian Shadyside

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

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