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Surgical Treatment Of Complex Regional Pain Syndrome Type II (CRPS II)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT01392599
Recruitment Status : Unknown
Verified June 2011 by Medical University of Vienna.
Recruitment status was:  Recruiting
First Posted : July 12, 2011
Last Update Posted : July 12, 2011
Information provided by:
Medical University of Vienna

Tracking Information
First Submitted Date  ICMJE June 30, 2011
First Posted Date  ICMJE July 12, 2011
Last Update Posted Date July 12, 2011
Study Start Date  ICMJE January 2009
Estimated Primary Completion Date January 2013   (Final data collection date for primary outcome measure)
Current Primary Outcome Measures  ICMJE
 (submitted: July 11, 2011)
Enhancement in the quality of life (measured by the NHP) due to a permanent reduction of pain (measured by the NHP and a VAS) of patients suffering from CRPS Type II. [ Time Frame: Outcome measures will be evaluated at baseline and 6 weeks after the operation ]
An appraisal of results will be made after the operation by using physical examionations and the standardized questionnaires (NHP,VAS). The health status and especially the pain level have to be constant for at least 3 month before being considered as an result.
Original Primary Outcome Measures  ICMJE Same as current
Change History No Changes Posted
Current Secondary Outcome Measures  ICMJE Not Provided
Original Secondary Outcome Measures  ICMJE Not Provided
Current Other Pre-specified Outcome Measures Not Provided
Original Other Pre-specified Outcome Measures Not Provided
Descriptive Information
Brief Title  ICMJE Surgical Treatment Of Complex Regional Pain Syndrome Type II (CRPS II)
Official Title  ICMJE Surgical Treatment of Complex Regional Pain Syndrome Type II (CRPS II) by Regional Subcutaneous Venous Sympathectomy
Brief Summary The purpose of this study is to investigated and evaluated the effectiveness of a new surgical technique for the treatment of severe chronic pain stages (Complex Regional Pain Syndrome Type II).
Detailed Description

For 140 years the treatment of Complex Regional Pain Syndromes Type II (CRPS II) has been an unsolved problem. Recent findings in animal models assume that CRPS Type II is maintained by a coupling of newly sprouted sympathetic and sensible fibres. Therapeutic approaches have included conventional pain medication, physical therapy, sympathetic blocks, transcutaneous or spinal cord stimulation, injections or infusion therapies and sympathectomy. Alone or in combination these therapies often yielded unfavorable results. The majority of physicians dealing with CRPS patients are convinced that a surgical treatment of the affected extremity only exacerbates the symptoms, especially its hallmark excruciating pain.

Patients with a CRPS Type II at the upper or the lower limb will be included in the study after ineffective pain therapy for more than 6 months. The most proximal region of pain associated with CRPS can be localized and 2% Lidocain will be injected into that area. If the sympathetic, deep, burning pain can be blocked repeatedly with these injections, the subcutaneous veins in the previously determined area will be surgically removed. This operation should lead to the permanent resolution of symptoms.

A visual analogue scale (VAS), the Nottingham Health Profile (NHP), thermography and physical examinations will be used to evaluate the outcome of the operation.

Study Type  ICMJE Interventional
Study Phase  ICMJE Phase 3
Study Design  ICMJE Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Condition  ICMJE CRPS Type II
After incision of the skin a subcutaneous area of approximately 16 cm² (2.5 square inches) will be en block removed between dermis and muscle fascia. All prior detected and marked veins in the operating field will be ligated or coagulated precisely.The tissue defect generated by this operation will be closed by a full thickness or a meshed skin graft which arises during the preparation.
Study Arms  ICMJE Experimental: Surgery
Patients with CRPS Type II
Publications *

*   Includes publications given by the data provider as well as publications identified by Identifier (NCT Number) in Medline.
Recruitment Information
Recruitment Status  ICMJE Unknown status
Estimated Enrollment  ICMJE
 (submitted: July 11, 2011)
Original Estimated Enrollment  ICMJE Same as current
Estimated Study Completion Date  ICMJE October 2013
Estimated Primary Completion Date January 2013   (Final data collection date for primary outcome measure)
Eligibility Criteria  ICMJE

Inclusion Criteria:

  • Patients suffering from CRPS Type II after after ineffective pain therapy for more than 6 months.

Exclusion Criteria:

  • Ineffective testinfiltration with an local anesthetic Pregnancy
Sex/Gender  ICMJE
Sexes Eligible for Study: All
Ages  ICMJE 18 Years and older   (Adult, Older Adult)
Accepts Healthy Volunteers  ICMJE No
Contacts  ICMJE Contact information is only displayed when the study is recruiting subjects
Listed Location Countries  ICMJE Austria
Removed Location Countries  
Administrative Information
NCT Number  ICMJE NCT01392599
Other Study ID Numbers  ICMJE 026/2009
Has Data Monitoring Committee No
U.S. FDA-regulated Product Not Provided
IPD Sharing Statement  ICMJE Not Provided
Responsible Party Wolfgang Happak, Prof. MD, Division of Plastic and Reconstructive Surgery, Surgical Clinic, Medical University of Vienna, Austria
Study Sponsor  ICMJE Medical University of Vienna
Collaborators  ICMJE Not Provided
Investigators  ICMJE
Principal Investigator: Wolfgang Happak, Prof. MD Division of Plastic and Reconstructive Surgery, Department of Surgery, Medical University of Vienna, Austria
PRS Account Medical University of Vienna
Verification Date June 2011

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP