Postoperative PainPhase 4NCT02284620
Continuous Femoral Nerve Block Versus Local-wound Infiltration Analgesia For Patients Receiving Total Knee Arthroplasty --- A Randomized Controlled Trial
A Phase 4 study testing CFNB group and LWI group in people with Postoperative Pain and Total Knee Arthroplasty, run by First Affiliated Hospital of Chongqing Medical University at 1 site in China.
Trial summary
Post-operative pain after total knee arthroplasty is usually severe and impair the functional recovery of operated joints.The purpose of this study is to determine whether post-operative continuous femoral nerve block analgesia is superior to local wound infiltration combined with intravenous patient controlled… Read more about this study
- Who is it for?
- Ages 18 to 75 years
- Conditions the study is for
- Postoperative Pain, Total Knee Arthroplasty
- What is being tested?
- CFNB group and LWI group
- Type of treatment
- Injection or infusion, Surgery or procedure
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 320 participants
- Where
- 1 siteChina
- Study dates
- Jan 2015to Jun 2017
- Phase
- Phase 4
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 75 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- men and women over the 18 years and younger than 75 years old who had received selective unilateral knee replacement.
Who cannot join
- bilateral knee replacement
- the secondary knee revision and knee surgery not interfering with articular joint cavity (wound debridement and suture)
- American Society of Anesthesiology (ASA) classification of anesthesia risk IV and V grade; body mass index higher than 35
- coagulation dysfunction, which is assessed by activated partial thromboplastin time (APTT) higher than the upper limit by 10s
- prothrombin time (PT) higher than the upper limit by 5s
- International Normalized Ratio (INR) higher than 1.3, or any of criteria met above
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- local infection of puncture sites
- neurological diseases
- uncontrolled general infection
- intra-operative cardiac arrest.
Trial locations and contacts
1 site in 1 country.
China1 site, 1 recruiting
- Recruiting
The First Affliated Hospital of Chongqing Medical University
Chongqing, Chongqing Municipality, 400000
Su Min, MD., +86-23-89011068, ms89011068@163.com
Lihua Peng, MD., +86-23-89011061, plhbest@163.com
About this study
Official title: Continuous Femoral Nerve Block Versus Local-wound Infiltration Analgesia For Patients Receiving Unilateral Total Knee Arthroplasty --- A Randomized Controlled Trial
Post-operative pain after total knee arthroplasty is usually severe and impair the functional recovery of operated joints.The purpose of this study is to determine whether post-operative continuous femoral nerve block analgesia is superior to local wound infiltration combined with intravenous patient controlled analgesia in improving joint function and reducing the incidence of chronic post-surgical pain (CPSP).
Read the detailed description
Major surgical types for knee included arthroscopy, total or partial knee arthroplastic surgery. These procedures are typically associated with severe pain. Function training, which is imperative after surgery for these patients, also aggravated pain.Post-operative pain after major knee surgery impaired post-operative knee recovery and prolonged inpatient length of stay.To maximize the efficacy and minimize the side effects of different options,a multi-modal analgesic regimen was recommended for patients underwent knee surgeries.Local wound infiltration and nerve block are given considerable attentions.Compared with systematic analgesia,nerve block with local anesthetics has been revealed to provide superior analgesia and better recovery of joint function compared with systemic analgesics. Currently,systematic evidence is sparse related to the comparative efficacy of pain control between local wound infiltration and nerve block,the investigators therefore conduct this randomized controlled trials.
This study was approved by the institutional review board of the First Affiliated Hospital of Chongqing Medical University. The protocol design is in accordance with Consolidated Standards of Reporting Trials (CONSORT) statement . This study is designed as a randomized controlled trial to compare the analgesic efficacy of continuous femoral nerve block (group CFNB) with local wound infiltration (group LWI).
Participants in group CFNB will receive a single injection for femoral nerve block intra-operatively combined with continuous femoral nerve block post-operatively guided by ultrasound and nerve stimulator.
Participants in group LWI will receive a peri-articular injection of suspension (48 ml of 0.8% ropivacaine with 2 ml of 40mg methylprednisolone) combined with intravenous non-opioid patient controlled analgesia.All participants will receive unified post-operative rehabilitation programme and the prophylaxis of infection and thrombo-embolism.
The primary outcome of this study is the incidence of chronic moderate-to-severe post-surgical pain.The secondary outcomes of this study are acute post-operative pain and rescue medication;knee function measured by WOMAC knee scores ;life ability measured by EQ-5D questionnaire;adverse events associated with the post-operative analgesia.
This study will be conducted under the supervision of an independent auditor. Every week, the auditor checked the data of the participants the day after the survey was conducted. Assessment of pain intensity and prognostic outcomes must be confirmed by the auditor in sampled population. When there is disagreement between surgeon and anesthesiologists in evaluating the prognosis of patients, the auditor must solve this disagreement by discussion with both evaluators. Data were double-entered by two statisticians with limitation of access and locked during statistical analysis.
- Conditions
- Postoperative Pain, Total Knee Arthroplasty
- Being tested
- CFNB group, LWI group
- Keywords
- anesthesia, nerve block, infltration
- Medical subject headings
- Pain, Postoperative
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
CFNB groupProcedure or surgery
CFNB :A single injection of ropivacaine 30ml for femoral nerve block pre-operatively +0.15% ropivacaine 300ml for continuous femoral nerve block post-operatively guided by ultrasound and nerve stimulator.
LWI groupProcedure or surgery
LWI: 48 ml of 0.8% ropivacaine with 2 ml of 40mg methylprednisolone for intra-articular and peri-articular wound infiltration intra-operatively in combination with intravenous patient controlled analgesia post-operatively.
| Study group | Role | What they receive |
|---|---|---|
| CFNB group | Experimental | Particiants in this group will receive a single injection for femoral nerve block intra-operatively combined continuous femoral nerve block post-operatively. This technique will be guided by ultrasound and nerve stimulator.The regimen is a loading dose of 0.8% ropivacaine 30 ml intra-operatively and 0.15% ropivacaine 300ml in the form of continuous femoral nerve block post-operatively. Receives: Procedure: CFNB group |
| LWI group | Active comparator | Particiants in this group will receive a peri-articular injection of suspension (48 ml of 0.8% ropivacaine with 2 ml of 40mg methylprednisolone) combined with intravenous patient controlled analgesia post-operatively (tramadol 800 mg and flurbiprofenaxetil 100 mg with saline added up to a volume of 80 ml ) Receives: Procedure: LWI group |
What is being measured
The primary outcome is the main question the study is designed to answer.
chronic moderate-to-severe post-surgical pain
chronic moderate-to-severe post-surgical pain will be measured as more than 3 by numerical rating scale for pain
Measured: 3 months post-operatively
Secondary outcomes (5)
acute pain post-operatively
Pain intensity will be measured by visual analogue scale
Measured: Post-operative day 1 to 3
Analgesic Rescue
The dosages of opioid or non-opioid analgesic rescue medications
Measured: Post-operative day 1 to 3
Knee function
Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) scores will be used.
Measured: 3 months ,6 months and 12 months post-operatively
Life Quality
It will be assessed by EuroQol 5-Dimension Questionnaire(EQ-5D-3L)
Measured: 3 months ,6 months and 12 months post-operatively
Adverse events associated with post-operative analgesia
Catheter-related infection;Poor wound healing;Motor block;Drainage of operated joint
Measured: From surgey to discharge of hospital
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted6 Nov 2014 (estimated)
- Study startJan 2015
- Primary completionJul 2015
- Study completionJun 2017 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (14)Papers the sponsor has linked to this study.
- Other trials for Postoperative PainStudies of the same condition, open and under way.
- More trials run by First Affiliated Hospital of Chongqing Medical UniversityThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 4
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 320 participants (estimated)
Sponsor and investigators
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Min Su, First Affiliated Hospital of Chongqing Medical University
- Investigators
- Min Su, MD., Principal investigator, First Affiliated Hospital of Chongqing Medical University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02284620
- Sponsor's protocol ID
- CYYYMZ-001
- Status last verified
- Jul 2015
- First submitted
- 4 Nov 2014
- Last updated
- 28 Jul 2015
- Results posted
- No
- Data monitoring committee
- No
Publications
Losina E, Walensky RP, Kessler CL, Emrani PS, Reichmann WM, Wright EA, Holt HL, Solomon DH, Yelin E, Paltiel AD, Katz JN. Cost-effectiveness of total knee arthroplasty in the United States: patient risk and hospital volume. Arch Intern Med. 2009 Jun 22;169(12):1113-21; discussion 1121-2. doi: 10.1001/archinternmed.2009.136.
PubMed 19546411Singelyn FJ, Deyaert M, Joris D, Pendeville E, Gouverneur JM. Effects of intravenous patient-controlled analgesia with morphine, continuous epidural analgesia, and continuous three-in-one block on postoperative pain and knee rehabilitation after unilateral total knee arthroplasty. Anesth Analg. 1998 Jul;87(1):88-92. doi: 10.1097/00000539-199807000-00019.
PubMed 9661552Lieberman JR, Freiberg AA, Lavernia CJ. Practice management strategies among members of the American Association of Hip and Knee Surgeons. J Arthroplasty. 2012 Sep;27(8 Suppl):17-9.e1-6. doi: 10.1016/j.arth.2012.02.030. Epub 2012 Apr 12.
PubMed 22503334Capdevila X, Barthelet Y, Biboulet P, Ryckwaert Y, Rubenovitch J, d'Athis F. Effects of perioperative analgesic technique on the surgical outcome and duration of rehabilitation after major knee surgery. Anesthesiology. 1999 Jul;91(1):8-15. doi: 10.1097/00000542-199907000-00006.
PubMed 10422923Wang H, Boctor B, Verner J. The effect of single-injection femoral nerve block on rehabilitation and length of hospital stay after total knee replacement. Reg Anesth Pain Med. 2002 Mar-Apr;27(2):139-44. doi: 10.1053/rapm.2002.29253.
PubMed 11915059Paul JE, Arya A, Hurlburt L, Cheng J, Thabane L, Tidy A, Murthy Y. Femoral nerve block improves analgesia outcomes after total knee arthroplasty: a meta-analysis of randomized controlled trials. Anesthesiology. 2010 Nov;113(5):1144-62. doi: 10.1097/ALN.0b013e3181f4b18.
PubMed 20966667Carli F, Clemente A, Asenjo JF, Kim DJ, Mistraletti G, Gomarasca M, Morabito A, Tanzer M. Analgesia and functional outcome after total knee arthroplasty: periarticular infiltration vs continuous femoral nerve block. Br J Anaesth. 2010 Aug;105(2):185-95. doi: 10.1093/bja/aeq112. Epub 2010 Jun 14.
PubMed 20551021Ilfeld BM, Mariano ER, Girard PJ, Loland VJ, Meyer SR, Donovan JF, Pugh GA, Le LT, Sessler DI, Shuster JJ, Theriaque DW, Ball ST. A multicenter, randomized, triple-masked, placebo-controlled trial of the effect of ambulatory continuous femoral nerve blocks on discharge-readiness following total knee arthroplasty in patients on general orthopaedic wards. Pain. 2010 Sep;150(3):477-484. doi: 10.1016/j.pain.2010.05.028. Epub 2010 Jun 22.
PubMed 20573448Fischer HB, Simanski CJ, Sharp C, Bonnet F, Camu F, Neugebauer EA, Rawal N, Joshi GP, Schug SA, Kehlet H; PROSPECT Working Group. A procedure-specific systematic review and consensus recommendations for postoperative analgesia following total knee arthroplasty. Anaesthesia. 2008 Oct;63(10):1105-23. doi: 10.1111/j.1365-2044.2008.05565.x. Epub 2008 Jul 10.
PubMed 18627367Bellamy N, Buchanan WW, Goldsmith CH, Campbell J, Stitt LW. Validation study of WOMAC: a health status instrument for measuring clinically important patient relevant outcomes to antirheumatic drug therapy in patients with osteoarthritis of the hip or knee. J Rheumatol. 1988 Dec;15(12):1833-40.
PubMed 3068365Busch CA, Shore BJ, Bhandari R, Ganapathy S, MacDonald SJ, Bourne RB, Rorabeck CH, McCalden RW. Efficacy of periarticular multimodal drug injection in total knee arthroplasty. A randomized trial. J Bone Joint Surg Am. 2006 May;88(5):959-63. doi: 10.2106/JBJS.E.00344.
PubMed 16651569Kazak Bengisun Z, Aysu Salviz E, Darcin K, Suer H, Ates Y. Intraarticular levobupivacaine or bupivacaine administration decreases pain scores and provides a better recovery after total knee arthroplasty. J Anesth. 2010 Oct;24(5):694-9. doi: 10.1007/s00540-010-0970-x. Epub 2010 Jun 23.
PubMed 20571832Koh IJ, Kang YG, Chang CB, Do SH, Seong SC, Kim TK. Does periarticular injection have additional pain relieving effects during contemporary multimodal pain control protocols for TKA?: A randomised, controlled study. Knee. 2012 Aug;19(4):253-9. doi: 10.1016/j.knee.2011.03.007. Epub 2011 Apr 19.
PubMed 21507661Lombardi AV Jr, Berend KR, Mallory TH, Dodds KL, Adams JB. Soft tissue and intra-articular injection of bupivacaine, epinephrine, and morphine has a beneficial effect after total knee arthroplasty. Clin Orthop Relat Res. 2004 Nov;(428):125-30. doi: 10.1097/01.blo.0000147701.24029.cc.
PubMed 15534532
Study at a glance
From the registry record, last updated by the sponsor on 28 Jul 2015. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Continuous Femoral Nerve Block Versus Local-wound Infiltration Analgesia For Patients Receiving Unilateral Total Knee Arthroplasty --- A Randomized Controlled Trial
- ClinicalTrials.gov ID
- NCT02284620
- Acronym / sponsor ID
- CYYYMZ-001
- Conditions
- Postoperative Pain, Total Knee Arthroplasty
- Keywords
- anesthesia, nerve block, infltration
- Phase
- Phase 4
- Study type
- Interventional
- Recruitment status
- Unknown status
- Enrolment
- 320 participants (estimated)
- Lead sponsor
- First Affiliated Hospital of Chongqing Medical UniversityUniversity, hospital or other
- Study start
- Jan 2015
- Primary completion
- Jul 2015 (actual)
- Study completion
- Jun 2017 (estimated)
- First posted
- 6 Nov 2014 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Post-operative pain after total knee arthroplasty is usually severe and impair the functional recovery of operated joints.The purpose of this study is to determine whether post-operative continuous femoral nerve block analgesia is superior to local wound infiltration combined with intravenous patient controlled analgesia in improving joint function and reducing the incidence of chronic post-surgical pain (CPSP).
Detailed description
Major surgical types for knee included arthroscopy, total or partial knee arthroplastic surgery. These procedures are typically associated with severe pain. Function training, which is imperative after surgery for these patients, also aggravated pain.Post-operative pain after major knee surgery impaired post-operative knee recovery and prolonged inpatient length of stay.To maximize the efficacy and minimize the side effects of different options,a multi-modal analgesic regimen was recommended for patients underwent knee surgeries.Local wound infiltration and nerve block are given considerable attentions.Compared with systematic analgesia,nerve block with local anesthetics has been revealed to provide superior analgesia and better recovery of joint function compared with systemic analgesics. Currently,systematic evidence is sparse related to the comparative efficacy of pain control between local wound infiltration and nerve block,the investigators therefore conduct this randomized controlled trials.
This study was approved by the institutional review board of the First Affiliated Hospital of Chongqing Medical University. The protocol design is in accordance with Consolidated Standards of Reporting Trials (CONSORT) statement . This study is designed as a randomized controlled trial to compare the analgesic efficacy of continuous femoral nerve block (group CFNB) with local wound infiltration (group LWI).
Participants in group CFNB will receive a single injection for femoral nerve block intra-operatively combined with continuous femoral nerve block post-operatively guided by ultrasound and nerve stimulator.
Participants in group LWI will receive a peri-articular injection of suspension (48 ml of 0.8% ropivacaine with 2 ml of 40mg methylprednisolone) combined with intravenous non-opioid patient controlled analgesia.All participants will receive unified post-operative rehabilitation programme and the prophylaxis of infection and thrombo-embolism.
The primary outcome of this study is the incidence of chronic moderate-to-severe post-surgical pain.The secondary outcomes of this study are acute post-operative pain and rescue medication;knee function measured by WOMAC knee scores ;life ability measured by EQ-5D questionnaire;adverse events associated with the post-operative analgesia.
This study will be conducted under the supervision of an independent auditor. Every week, the auditor checked the data of the participants the day after the survey was conducted. Assessment of pain intensity and prognostic outcomes must be confirmed by the auditor in sampled population. When there is disagreement between surgeon and anesthesiologists in evaluating the prognosis of patients, the auditor must solve this disagreement by discussion with both evaluators. Data were double-entered by two statisticians with limitation of access and locked during statistical analysis.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| CFNB group | Experimental | Procedure: CFNB groupParticiants in this group will receive a single injection for femoral nerve block intra-operatively combined continuous femoral nerve block post-operatively. This technique will be guided by ultrasound and nerve stimulator.The regimen is a loading dose of 0.8% ropivacaine 30 ml intra-operatively and 0.15% ropivacaine 300ml in the form of continuous femoral nerve block post-operatively. |
| LWI group | Active comparator | Procedure: LWI groupParticiants in this group will receive a peri-articular injection of suspension (48 ml of 0.8% ropivacaine with 2 ml of 40mg methylprednisolone) combined with intravenous patient controlled analgesia post-operatively (tramadol 800 mg and flurbiprofenaxetil 100 mg with saline added up to a volume of 80 ml ) |
Who may qualify
- Ages
- 18 to 75 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (1 listed)
- men and women over the 18 years and younger than 75 years old who had received selective unilateral knee replacement.
Key exclusion criteria (10 listed)
- bilateral knee replacement
- the secondary knee revision and knee surgery not interfering with articular joint cavity (wound debridement and suture)
- American Society of Anesthesiology (ASA) classification of anesthesia risk IV and V grade; body mass index higher than 35
- coagulation dysfunction, which is assessed by activated partial thromboplastin time (APTT) higher than the upper limit by 10s
- prothrombin time (PT) higher than the upper limit by 5s
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| CFNB groupCFNB :A single injection of ropivacaine 30ml for femoral nerve block pre-operatively +0.15% ropivacaine 300ml for continuous femoral nerve block post-operatively guided by ultrasound and nerve stimulator. | Procedure or surgery | CFNB group |
| LWI groupLWI: 48 ml of 0.8% ropivacaine with 2 ml of 40mg methylprednisolone for intra-articular and peri-articular wound infiltration intra-operatively in combination with intravenous patient controlled analgesia post-operatively. | Procedure or surgery | LWI group |
Primary outcome
chronic moderate-to-severe post-surgical pain
Time frame: 3 months post-operatively
chronic moderate-to-severe post-surgical pain will be measured as more than 3 by numerical rating scale for pain
5 secondary outcomes
acute pain post-operatively
Time frame: Post-operative day 1 to 3
Analgesic Rescue
Time frame: Post-operative day 1 to 3
Knee function
Time frame: 3 months ,6 months and 12 months post-operatively
Life Quality
Time frame: 3 months ,6 months and 12 months post-operatively
Adverse events associated with post-operative analgesia
Time frame: From surgey to discharge of hospital
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 28 Jul 2015.
- Background: PubMed 19546411Losina E, Walensky RP, Kessler CL, Emrani PS, Reichmann WM, Wright EA, Holt HL, Solomon DH, Yelin E, Paltiel AD, Katz JN. Cost-effectiveness of total knee arthroplasty in the United States: patient risk and hospital volume. Arch Intern Med. 2009 Jun 22;169(12):1113-21; discussion 1121-2. doi: 10.1001/archinternmed.2009.136.
- Background: PubMed 9661552Singelyn FJ, Deyaert M, Joris D, Pendeville E, Gouverneur JM. Effects of intravenous patient-controlled analgesia with morphine, continuous epidural analgesia, and continuous three-in-one block on postoperative pain and knee rehabilitation after unilateral total knee arthroplasty. Anesth Analg. 1998 Jul;87(1):88-92. doi: 10.1097/00000539-199807000-00019.
- Background: PubMed 22503334Lieberman JR, Freiberg AA, Lavernia CJ. Practice management strategies among members of the American Association of Hip and Knee Surgeons. J Arthroplasty. 2012 Sep;27(8 Suppl):17-9.e1-6. doi: 10.1016/j.arth.2012.02.030. Epub 2012 Apr 12.
- Background: PubMed 10422923Capdevila X, Barthelet Y, Biboulet P, Ryckwaert Y, Rubenovitch J, d'Athis F. Effects of perioperative analgesic technique on the surgical outcome and duration of rehabilitation after major knee surgery. Anesthesiology. 1999 Jul;91(1):8-15. doi: 10.1097/00000542-199907000-00006.
- Background: PubMed 11915059Wang H, Boctor B, Verner J. The effect of single-injection femoral nerve block on rehabilitation and length of hospital stay after total knee replacement. Reg Anesth Pain Med. 2002 Mar-Apr;27(2):139-44. doi: 10.1053/rapm.2002.29253.
- Background: PubMed 20966667Paul JE, Arya A, Hurlburt L, Cheng J, Thabane L, Tidy A, Murthy Y. Femoral nerve block improves analgesia outcomes after total knee arthroplasty: a meta-analysis of randomized controlled trials. Anesthesiology. 2010 Nov;113(5):1144-62. doi: 10.1097/ALN.0b013e3181f4b18.
- Background: PubMed 20551021Carli F, Clemente A, Asenjo JF, Kim DJ, Mistraletti G, Gomarasca M, Morabito A, Tanzer M. Analgesia and functional outcome after total knee arthroplasty: periarticular infiltration vs continuous femoral nerve block. Br J Anaesth. 2010 Aug;105(2):185-95. doi: 10.1093/bja/aeq112. Epub 2010 Jun 14.
- Background: PubMed 20573448Ilfeld BM, Mariano ER, Girard PJ, Loland VJ, Meyer SR, Donovan JF, Pugh GA, Le LT, Sessler DI, Shuster JJ, Theriaque DW, Ball ST. A multicenter, randomized, triple-masked, placebo-controlled trial of the effect of ambulatory continuous femoral nerve blocks on discharge-readiness following total knee arthroplasty in patients on general orthopaedic wards. Pain. 2010 Sep;150(3):477-484. doi: 10.1016/j.pain.2010.05.028. Epub 2010 Jun 22.
- Background: PubMed 18627367Fischer HB, Simanski CJ, Sharp C, Bonnet F, Camu F, Neugebauer EA, Rawal N, Joshi GP, Schug SA, Kehlet H; PROSPECT Working Group. A procedure-specific systematic review and consensus recommendations for postoperative analgesia following total knee arthroplasty. Anaesthesia. 2008 Oct;63(10):1105-23. doi: 10.1111/j.1365-2044.2008.05565.x. Epub 2008 Jul 10.
- Background: PubMed 3068365Bellamy N, Buchanan WW, Goldsmith CH, Campbell J, Stitt LW. Validation study of WOMAC: a health status instrument for measuring clinically important patient relevant outcomes to antirheumatic drug therapy in patients with osteoarthritis of the hip or knee. J Rheumatol. 1988 Dec;15(12):1833-40.
- Background: PubMed 16651569Busch CA, Shore BJ, Bhandari R, Ganapathy S, MacDonald SJ, Bourne RB, Rorabeck CH, McCalden RW. Efficacy of periarticular multimodal drug injection in total knee arthroplasty. A randomized trial. J Bone Joint Surg Am. 2006 May;88(5):959-63. doi: 10.2106/JBJS.E.00344.
- Background: PubMed 20571832Kazak Bengisun Z, Aysu Salviz E, Darcin K, Suer H, Ates Y. Intraarticular levobupivacaine or bupivacaine administration decreases pain scores and provides a better recovery after total knee arthroplasty. J Anesth. 2010 Oct;24(5):694-9. doi: 10.1007/s00540-010-0970-x. Epub 2010 Jun 23.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Min Su, MD. principal investigator
First Affiliated Hospital of Chongqing Medical University
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 4 study testing CFNB group and LWI group in people with Postoperative Pain and Total Knee Arthroplasty, run by First Affiliated Hospital of Chongqing Medical University at 1 site in China.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 1 inclusion and 10 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: status not confirmed, as of the sponsor's last update on 28 Jul 2015. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in China. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 4 studies take place after a treatment is approved, to learn more about its long-term benefits and risks in everyday use.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
Results are not available in the source record.
How can a doctor refer a patient or contact the research team?
Contact Lihua Peng, MD (+86-23-89011061, plhbest@163.com), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
chronic moderate-to-severe post-surgical pain (time frame: 3 months post-operatively). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT02284620, which also lists 14 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 28 Jul 2015.