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Minimally Invasive Reduction and Fixation of Thoracolumbar Fractures (FRIFIX)

This study has been completed.
Information provided by (Responsible Party):
Aesculap AG Identifier:
First received: February 26, 2013
Last updated: January 25, 2017
Last verified: January 2017
Spinal injuries, such as vertebral fractures, often result in a significant instability of the spine and lead to acute or delayed neurological deficits. Depending on the type of injury there are various methods available to stabilize the spine. The proposed study should clarify whether the combined reduction and fixation with a minimally invasive approach can actually be done with the same precision as in a conventional approach. The primary endpoint of this investigation is the monosegmental anterior wedge angle (AWA), and its maintenance over the first 6 postoperative weeks. It is the aim of the study to gather key radiological, clinical and subjective patient outcome parameters for its patient population that will allow to compare the results to a historical group of patients. The study design is non-interventional, prospective, open,and multicentric.

Condition Intervention
Thoracic Fracture Lumbar Fracture Device: Fracture Fixation

Study Type: Observational
Study Design: Observational Model: Case-Only
Time Perspective: Prospective
Official Title: Prospective Observational Study of Minimally Invasive Fixation of Thoracolumbar Fractures With the Fracture Fixation System S4, Performed With the Fracture Reduction Instrumentation FRI (FRIFIX)

Resource links provided by NLM:

Further study details as provided by Aesculap AG:

Primary Outcome Measures:
  • Anterior wedge angle (AWA) [ Time Frame: 6 weeks ]

Secondary Outcome Measures:
  • Blood loss of the patient during surgery to stabilize the spine fracture [ Time Frame: intraoperative ]
  • OP duration [ Time Frame: intraoperative ]
  • Adverse events [ Time Frame: Intraop and Postop ]
  • VAS Spine Score [ Time Frame: 3 days and 6 weeks ]
  • VAS pain score [ Time Frame: 3 days and 6 weeks ]
  • accompanying pain medication (or "self medication") [ Time Frame: 6 weeks ]
  • patient satisfaction with operational results [ Time Frame: 6 weeks ]
    The patient is asked the question whether he is satisfied with the results of the operation, he has the choice between six answers: very satisfied, satisfied, partly satisfied, unsatisfied, no comment

  • Hospital length of stay [ Time Frame: discharge ]

Enrollment: 24
Actual Study Start Date: February 2013
Study Completion Date: November 2016
Primary Completion Date: October 2014 (Final data collection date for primary outcome measure)
Groups/Cohorts Assigned Interventions
Minimally invasive Approach
Patients with a thoracolumbar Fracture A3.1 to A 3.3 treated by fracture fixation by a minimally invasive approach
Device: Fracture Fixation
Thoracolumbar Fracture Fixation


Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
adult patients

Inclusion Criteria:

  • Minimum age of the patients of 18 years
  • Indication for operative treatment of fractures of the thoracic or lumbar spine
  • Singular A3.1-3 fractures according to the AO classification system
  • Declaration of consent in participation in this study and willingness to the treatment according to the study protocol
  • Physical and mental ability to meet the clinical and radiological follow-up plan

Exclusion Criteria:

  • Additional severe trauma, that makes survey of the patient difficult or impossible influence the results of the fracture treatment significantly
  • Additional trauma or fractures of the spine
  • Other serious conditions complicating participation in the study
  • Systemic or local infections
  • Pregnancy or planned pregnancy
  • Neurological deficits
  • Severe blood coagulation disorders diagnosed preoperatively
  • Intake of preoperatively anticoagulants
  • Osteoporosis
  • Bone metabolism disorders
  • Laminectomy necessary during surgery results in exclusion of the patient either
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01810094

Bergisch Gladbach, Germany, 51429
Universitätsklinik Bonn, Abteilung für Unfallchirurgie
Bonn, Germany, 53127
Klinik für Unfall-, Hand- und Wiederherstellungschirurgie, Universitätsklinik Köln
Köln, Germany, 50924
Abteilung für Orthopädie und Unfallchirurgie, Krankenhaus Wermelskirchen
Wermelskirchen, Germany, 42929
Sponsors and Collaborators
Aesculap AG
Principal Investigator: Hans Goost, MD University Hospital, Bonn
  More Information

Responsible Party: Aesculap AG Identifier: NCT01810094     History of Changes
Other Study ID Numbers: AAG-O-H-0910
Study First Received: February 26, 2013
Last Updated: January 25, 2017

Keywords provided by Aesculap AG:
thoracolumbar fracture
fixateur interne
minimal invasive

Additional relevant MeSH terms:
Fractures, Bone
Wounds and Injuries processed this record on September 21, 2017