Morphology of the VMO in Patients With PFPS and Healthy Young Adults--A Sonographic Study

NCT00173147 | Unknown

• 1 other identifier: 9461700502
• Study Type: observational
• Target: N/A
• Locations: 1 country
• Sites: 1

Brief Summary

Background：Patellofemoral pain syndrome（PFPS） is a common knee disorder characterized by anterior or retropatellar pain associated with activities that load the patellofemoral joint. Previous studies reveal that the vastus medialis obliquus（VMO） is an important dynamic medial stabilizer of the patellar. Insufficiency of the VMO leads to lateral shift of the patella and the increases the patellofemoral contact force. An in vitro study conducted by Hubbard JK. et al. claimed that there were no significant relationship between several morphologic characteristics of the VMO and the extent of patellofemoral joint deterioration. We consider that the condition might be different in vivo, so we chose ultrasonogrphy as the measurement tool to examine the morphology of the VMO in PFPS patients and healthy controls. Purpose：To determine if there are significant differences in several morphologic parameters of the VMO between patients with PFPS and healthy controls under 50. Method：31 PFPS patients and 31 matched healthy adults under 50 were recruited for the study. The HDI 5000 ultrasonography machine was used to evaluate morphologic parameters of the VMO, including the percent of patella attachment, fiber angle, the volume attached to the patella, and the change of shape of the VMO.

Conditions

Patellofemoral Pain Syndrome

Eligibility Criteria

• Age: 15 Years - 50 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Child (0-17), Adult (18-64)

You may qualify if:

• under 50 years old.
• Have a diagnosis of PFPS.

You may not qualify if:

• Diagnosis other than PFPS，such as meniscal lesion, ligamentous instability ,patellar tendon pathology, traction apophysitis, radiation pain, referred pain, ect.
• Knee operation within three month.
• X-ray findings (1)joint space narrowing (2)osteophyte formation

Sponsors & Collaborators

• National Taiwan University Hospital: lead

Study Sites (1)

NTUH

Taipei, 100, Taiwan

RECRUITING

MeSH Terms

Conditions

Patellofemoral Pain Syndrome

Condition Hierarchy (Ancestors)

Joint Diseases; Musculoskeletal Diseases

Study Officials

• Mei-Hwa Jan, Master

  NTU department of physical therapy

  STUDY CHAIR

Study Design

• Study Type: observational
• Time Perspective: RETROSPECTIVE
• Sponsor Type: OTHER

Study Record Dates

• First Submitted: September 12, 2005
• First Posted: September 15, 2005
• Study Start: May 1, 2005
• Last Updated: October 27, 2008

Record last verified: 2005-04

Locations

TW (1)