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The Role of Quadriceps Contraction in Patellar Repositioning - a Computed Tomography Study

The recruitment status of this study is unknown because the information has not been verified recently.
Verified September 2008 by National Taiwan University Hospital.
Recruitment status was  Recruiting
Sponsor:
Information provided by:
National Taiwan University Hospital
ClinicalTrials.gov Identifier:
NCT00760136
First received: April 10, 2007
Last updated: October 23, 2008
Last verified: September 2008
History of Changes
  Purpose

Background Previous studies have a great discrepancy concerning the effects of quadriceps contraction on patellar lateral displacement and tilt in patients with patellofemoral pain syndrome. This discrepancy may be caused by lack of information regarding to classifications of patellofemoral alignment under quadriceps relaxed. We hypothesized quadriceps contraction has different effects on each type of patellofemoral malalignment.

Methods The investigators expect to recruit 150 subjects with patellofemoral pain syndrome to participate in this study. All patients underwent computed tomography imaging of symptomatic knees, with and without quadriceps muscle contraction in 0°, 15° and 30° of knee flexion. Patellar lateral condyle index and patellar tilt angles of Sasaki and modified Fulkerson were measured to investigate the effect of quadriceps contraction on patellar repositioning.


Condition Intervention Phase
Patellofemoral Pain Syndrome
 Procedure: Computed Tomography
 Phase 0

Study Type: Observational
Study Design: Observational Model: Case-Only
Time Perspective: Retrospective
Official Title: The Role of Quadriceps Contraction in Patellar Repositioning-a Computed Tomography Study

Resource links provided by NLM:

MedlinePlus related topics: CT Scans
U.S. FDA Resources

Further study details as provided by National Taiwan University Hospital:

Estimated Enrollment: 150
Study Start Date: August 2006
Estimated Study Completion Date: July 2009
Intervention Details:
    Procedure: Computed Tomography
    CT imaging of bilateral knee
Detailed Description:

Background Previous studies have a great discrepancy concerning the effects of quadriceps contraction on patellar lateral displacement and tilt in patients with patellofemoral pain syndrome. This discrepancy may be caused by lack of information regarding to classifications of patellofemoral alignment under quadriceps relaxed. We hypothesized quadriceps contraction has different effects on each type of patellofemoral malalignment.

We expect to recruit 150 subjects with patellofemoral pain syndrome to participate in this study. All patients underwent computed tomography imaging of symptomatic knees, with and without quadriceps muscle contraction in 0°, 15° and 30° of knee flexion. Patellar lateral condyle index and patellar tilt angles of Sasaki and modified Fulkerson were measured to investigate the effect of quadriceps contraction on patellar repositioning.

  Eligibility

Ages Eligible for Study:   20 Years to 50 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Sampling Method:   Probability Sample
Study Population

Patients with patellofemoral pain.

Criteria

Inclusion Criteria:

  • The inclusion criteria for patients with PFPS were suffering from pain with at least two kinds of knee-flexing activities such as:

    • sitting
    • getting up from sitting
    • walking upstairs or downstairs
    • squatting
    • getting up from squatting
    • running
    • kneeling
    • jumping

Exclusion Criteria:

The exclusion criteria included:

  • The presence of any major medical disease
  • Rheumatoid arthritis, gouty arthritis
  • Recent history (within 3 months) of knee surgery
  • Image findings of osteoarthritis
  • Any deformity of lower limbs
  Contacts and Locations
Please refer to this study by its ClinicalTrials.gov identifier: NCT00760136

Contacts
Contact: Mai-Hwa Jan, MS 886-2-33228138 mhjan@ntu.edu.tw

Locations
Taiwan
Mei-Hwa Jan Recruiting
Taipei, Taiwan, 100
Contact: Mei-Hwa Jan, MS     886-2-33228138     mhjan@ntu.edu.tw    
Sponsors and Collaborators
National Taiwan University Hospital
Investigators
Study Director: Mai-Hwa Jan, MS Graduate institute of physical therapy
  More Information

No publications provided

Responsible Party: ethics committee of National Taiwan University Hospital, National Taiwan University Hospital
ClinicalTrials.gov Identifier: NCT00760136     History of Changes
Other Study ID Numbers: 9461712133
Study First Received: April 10, 2007
Last Updated: October 23, 2008
Health Authority: Taiwan: Department of Health

Keywords provided by National Taiwan University Hospital:
patellofemoral pain
quadriceps contraction

Additional relevant MeSH terms:
Patellofemoral Pain Syndrome
Joint Diseases
Musculoskeletal Diseases

ClinicalTrials.gov processed this record on May 22, 2013