NCT00760136

Brief Summary

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.

Trial Health

43
At Risk

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
150

participants targeted

Target at P50-P75 for all trials

Timeline
Completed

Started Aug 2006

Typical duration for all trials

Geographic Reach
1 country

1 active site

Status
unknown

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Start

First participant enrolled

August 1, 2006

Completed
8 months until next milestone

First Submitted

Initial submission to the registry

April 10, 2007

Completed
1.5 years until next milestone

First Posted

Study publicly available on registry

September 26, 2008

Completed
9 months until next milestone

Study Completion

Last participant's last visit for all outcomes

July 1, 2009

Completed
Last Updated

October 24, 2008

Status Verified

September 1, 2008

First QC Date

April 10, 2007

Last Update Submit

October 23, 2008

Conditions

Patellofemoral Pain Syndrome

Keywords

patellofemoral painquadriceps contraction

Interventions

Computed TomographyPROCEDURE

CT imaging of bilateral knee

Eligibility Criteria

Age20 Years - 50 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64)
Sampling MethodProbability Sample
Study Population

Patients with patellofemoral pain.

You may qualify if:

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

You may not qualify if:

  • 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

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Mei-Hwa Jan

Taipei, 100, Taiwan

RECRUITING

MeSH Terms

Conditions

Patellofemoral Pain Syndrome

Condition Hierarchy (Ancestors)

Joint DiseasesMusculoskeletal Diseases

Study Officials

  • Mai-Hwa Jan, MS

    Graduate institute of physical therapy

    STUDY DIRECTOR

Central Study Contacts

Mai-Hwa Jan, MS

CONTACT

886-2-33228138mhjan@ntu.edu.tw

Study Design

Study Type
observational
Observational Model
CASE ONLY
Time Perspective
RETROSPECTIVE
Sponsor Type
OTHER

Study Record Dates

First Submitted

April 10, 2007

First Posted

September 26, 2008

Study Start

August 1, 2006

Study Completion

July 1, 2009

Last Updated

October 24, 2008

Record last verified: 2008-09

Locations

TW(1)