Temporary Prosthesis in Traumatic Below-knee Amputation

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: NCT00263497
Recruitment Status : Unknown
Verified May 2012 by University Hospital of North Norway.
Recruitment status was:  Recruiting
First Posted : December 8, 2005
Last Update Posted : May 14, 2012
Medical University of Joenkoeping, Sweden
NCHADS - Ministry of Health of Cambodia
Information provided by (Responsible Party):
University Hospital of North Norway

December 7, 2005
December 8, 2005
May 14, 2012
March 2006
October 2012   (Final data collection date for primary outcome measure)
  • Pain: Patient-rated [ Time Frame: 1, 3, and 6 months postinjury ]
  • Pain: clinical exam rated [ Time Frame: 1, 3, and 6 months post-injury ]
  • Function: patient-rated [ Time Frame: 1, 3, and 6 months post-injury ]
  • Function: gait analysis [ Time Frame: 1, 3, and 6 months post-injury ]
  • Pain: Patient-reated
  • Pain: clinical exam rated
  • Function: patient-rated
  • Function: gait analysis
Complete list of historical versions of study NCT00263497 on Archive Site
Qualitative longitudinal study of subsets [ Time Frame: 1, 3, and 6 months post-injury ]
Qualitative longitudial study of subsets
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Temporary Prosthesis in Traumatic Below-knee Amputation
Immediate Temporary Prosthesis Fitting in Traumatic Trans-tibial Amputation: a Controlled Clinical Study in Rural Cambodia
Most trauma survivors in low-income countries develop post-injury chronic pain syndromes. Normally traumatic amputees have to wait 4-6 months for definitive prosthesis fitting. The actual study aims at reducing post-injury chronic pain and improving function by immediate temporary prosthesis fitting after surgery.

Background: Previous studies document that 75% of traumatic amputees in low-income countries develop incapacitating chronic pain syndromes. With the present level of rehabilitation service, amputees have to wait 4-6 months for postoperative prosthesis fitting.

Hypothesis: Immediate postoperative prosthesis fitting reduce chronic pain and improves function in trans-tibial amputees.

Reference population: Traumatic amputees living in low-income and low-resource communities.

Study population: Adult patients with trans-tibial amputations in rural districts of Battambang Province, Cambodia.

Study design: A semi-cross over controlled study. Supplement:longitudinal qualitative studies of subsets.

Main variables for quantitative study:

  • Outcome indicators:Self-rated pain (VAS). Self-rated function (VAS). Pain (clinical exam). Gait analysis.
  • Variables: Preinjury morbidity and socioeconomical status. Injury severity (RTS, ISS). Prehospital and hospital analgesia. Postoperative infection. Amputation stump quality (clinical rating).

Sampling: Given test power =0.8, significance level =0.05, sequential analysis of results, an estimate of 15 patients will be included in each study group. The sample may be modified due to sequential analysis (see below).

Intervention: A mobile rural workshop takes molds and adapt temporary tuber-ischii bearing prosthesis made of local materials. The prosthesis is fitted at the time of amputation wound closure (5 - 15 days post-injury), and patients mobilized on walking aids. Control group patients comprise of transtibial amputees managed at neighboring hospitals not being served by the actual rehab workshop. Control patients leave hospital with walking aids without prosthesis. Data are gathered by rehab team (surgeon and prosthesis technician) at point zero, 1 month postoperation, 3 months postoperation. End-point for evaluation is 6 months post-op. Patients decide freely to cross-over on pain indications.

Statistical analysis: Sequential design with positive and negative stopping rules. Outcome variables at end-point are reported for groups of 3 patients to statistician(Prof. Stig Larsen, University of Oslo) who gives stop orders.

Ethical considerations: If ITP proves favorable, the study results will be used to expand the rural rehab service to include control districts as well. This makes the use of control groups in the actual study legitimate. Also optional cross-over prevents against inflicting unnecessary discomfort in study patients. The study is approved by the local health authorities and Norwegian Committee for Research Ethics. The system for data filing and protection is approved by Norwegian Social Science Data Services, Bergen.

Publication: Authorship will be set according to Vancouver regulations.

Not Provided
Allocation: Non-Randomized
Intervention Model: Crossover Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Transtibial Amputation
Device: Temporary tuber-ischii bearing prosthesis
Tuber ischii-bearing holster is connected by hinged metal bars to foot device to enable immediate postoperative mobilization of transtibial amputees. No other medical interventions or pharmaceutical treatment.
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*   Includes publications given by the data provider as well as publications identified by Identifier (NCT Number) in Medline.
Unknown status
December 2012
October 2012   (Final data collection date for primary outcome measure)

Inclusion Criteria:

  • Traumatic transtibial amputation

Exclusion Criteria:

  • Double amputation
Sexes Eligible for Study: All
15 Years to 55 Years   (Child, Adult)
Contact information is only displayed when the study is recruiting subjects
Not Provided
Not Provided
University Hospital of North Norway
University Hospital of North Norway
  • Medical University of Joenkoeping, Sweden
  • NCHADS - Ministry of Health of Cambodia
Principal Investigator: Bjoern Karlsson, Rehab Ing TMC, University Hospital Northern Norway
University Hospital of North Norway
May 2012

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