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

September 21, 2015 updated by: University Hospital, Basel, Switzerland

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

Study Overview

Status

Completed

Conditions

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

Study Type

Observational

Enrollment (Actual)

15

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Switzerland
    • BS
      • Basel, BS, Switzerland, 4056
        • Lab. for Orthopaedic Biomechanics, University of Basel

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 80 years (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

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)

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University Hospital, Basel, Switzerland

Collaborators

University Children's Hospital Basel
Lab. for Orthopaedic Biomechanics, University of 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

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

November 1, 2005

Primary Completion (Actual)

December 1, 2007

Study Completion (Actual)

December 1, 2007

Study Registration Dates

First Submitted

February 2, 2006

First Submitted That Met QC Criteria

February 7, 2006

First Posted (Estimate)

February 8, 2006

Study Record Updates

Last Update Posted (Estimate)

September 22, 2015

Last Update Submitted That Met QC Criteria

September 21, 2015

Last Verified

September 1, 2015

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • LOB_00001_patella

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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