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Functional Surface Electromyogram of Knee Extensors in Healthy Humans and Patients With Patella-dislocation.

This study has been completed.
Sponsor:
ClinicalTrials.gov Identifier:
NCT00288847
First Posted: February 8, 2006
Last Update Posted: September 22, 2015
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.
Collaborators:
Lab. for Orthopaedic Biomechanics, University of Basel
University Children's Hospital Basel
Information provided by (Responsible Party):
University Hospital, Basel, Switzerland
  Purpose

The activation of the knee extensors in adults after patella dislocation.

The kneecap can dislocate due to an accident or also only due to an interior turn in the stretched knee joint out of its sliding bearing. E. Arendt (Arendt 2002) wrote an overview work, in which possible causes and working methods to the patella dislocation are discussed. Despite almost one hundred quotations the authors are not able find the causes and the possible treatment concepts. The study will examined healthy adults (25 female and 25 men) and 25 patients with patella dislocation by a routine applied clinical gait analysis and surface EMG (after the European SENIAM guidelines) iin the Laboratory for Gait Analysis Basel of the Children's University Hospital Basel. The combination of gait analysis and the surface EMG with Wavelet analysis may objectify possible reasons for a patella dislocation


Condition
Patella-Dislocation

Study Type: Observational
Study Design: Time Perspective: Retrospective
Official Title: Functional Surface Electromyogram of Knee Extensors in Healthy Humans and Patients With Patella-dislocation.

Resource links provided by NLM:


Further study details as provided by University Hospital, Basel, Switzerland:

Enrollment: 15
Study Start Date: November 2005
Study Completion Date: December 2007
Primary Completion Date: December 2007 (Final data collection date for primary outcome measure)
Detailed Description:

Introduction The kneecap can dislocate due to an accident or also only due to an interior turn in the stretched knee joint out of its sliding bearing. E. Arendt (Arendt 2002) wrote an overview work, in which possible causes and working methods to the patella dislocation are discussed. Despite almost one hundred quotations the authors are not able find the causes and the possible treatment concepts. The study will examined healthy adults (25 female and 25 men) and 25 patients with patella dislocation by a routine applied clinical gait analysis and surface EMG (after the European SENIAM guidelines) in the Laboratory for Gait Analysis Basel of the Children's University Hospital Basel. The combination of gait analysis and the surface EMG with Wavelet analysis may objectify possible reasons for a patella dislocation and compare the intensity pattern of the EMG between the groups.

Method All subjects (healthy and patients with a patella dislocation) will be prior to the study informed about the study and sign the consent from

The investigation will include the following tasks:

  • Preparation of the subject for a clinical gait analysis with placing reflecting marker on the lower body according to the maker setup of Davis et al. (Davis III et al., 1991.
  • Preparation of the subject for a surface EMG of the muscles: gastrocnemius medialis, tibialis anterior, vastus medialis, vastus lateralis, rectus femoris, biceps femoris, semitendinosus according to the SENIAM-Standard.
  • Measurements: 10 trials of level walking in self selected speed and 3 times 5 single leg quads on the force plate.
  • System: VICON 460 (6 Cameras, 120 Hz, Oxford Metrics Ltd., UK).
  • EMG-System: Zebris, Tuebingen, Germany; Amplifiers: Biovision, Wehrheim, Germany, EMG-Electrodes: Bipolar Ag/AgCl Surface Electrodes Noraxon, Sampling rate: 2520 Hz
  • Data analysis: Kinetic-and kinematic data with the Vicon-Software, EMG-Data with Wavelet Package (Biomechanigg, Calgary, Canada)
  • Statistical Analysis: ANVOA
  Eligibility

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Ages Eligible for Study:   18 Years to 80 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Criteria

Inclusion Criteria:

  • Patient: Patella Dislocation before surgery
  • Control: healthy

Exclusion Criteria:

  • Patient: Patella Dislocation not able to walk,
  • Patient: using orthosis or crutches
  • Control: knee injury (e.g. ACL-rupture)
  • Control: leg surgery in the last 5 years
  • Control: sport injury in the last 6 month (e.g. Muscle pulling)
  Contacts and Locations
Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00288847


Locations
Switzerland
Lab. for Orthopaedic Biomechanics, University of Basel
Basel, BS, Switzerland, 4056
Sponsors and Collaborators
University Hospital, Basel, Switzerland
Lab. for Orthopaedic Biomechanics, University of Basel
University Children's Hospital Basel
Investigators
Principal Investigator: Beat Goepfert, MEng Lab. for Orthopaedic Biomechanics, University of Basel
Principal Investigator: Dieter Wirz, MD Lab. for Orthopaedic Biomechanics, University of Basel
Study Chair: Alma U Daniels, Ph.D. Lab. for Orthopaedic Biomechanics, University of Basel
  More Information

Additional Information:
Publications:
Responsible Party: University Hospital, Basel, Switzerland
ClinicalTrials.gov Identifier: NCT00288847     History of Changes
Other Study ID Numbers: LOB_00001_patella
First Submitted: February 2, 2006
First Posted: February 8, 2006
Last Update Posted: September 22, 2015
Last Verified: September 2015

Keywords provided by University Hospital, Basel, Switzerland:
Patella Dislocation
Surface EMG
Gender difference

Additional relevant MeSH terms:
Joint Dislocations
Patellar Dislocation
Bone Diseases
Musculoskeletal Diseases
Wounds and Injuries
Knee Injuries
Leg Injuries