This site became the new on June 19th. Learn more.
Show more Menu IMPORTANT: Listing of a study on this site does not reflect endorsement by the National Institutes of Health. Talk with a trusted healthcare professional before volunteering for a study. Read more... Menu IMPORTANT: Talk with a trusted healthcare professional before volunteering for a study. Read more... Menu
Give us feedback

Stress Analysis of Hip Dysplasia

This study is enrolling participants by invitation only.
Information provided by (Responsible Party):
Andrew Anderson, University of Utah Identifier:
First received: March 6, 2012
Last updated: March 21, 2017
Last verified: March 2017
The main objective of this study is to predict cartilage contact pressures in the hip after periacetabular osteotomy (PAO).

Hip Dysplasia

Study Type: Observational
Study Design: Observational Model: Other
Time Perspective: Prospective
Official Title: Stress Analysis of Hip Dysplasia After Corrective Surgery

Further study details as provided by Andrew Anderson, University of Utah:

Primary Outcome Measures:
  • To predict cartilage contact pressures in the hip joint during simulated daily activities before and after periacetabular osteotomy (PAO) for correction of traditional dysplasia/retroversion. [ Time Frame: 1 year post surgery ]

Estimated Enrollment: 24
Study Start Date: February 2011
Estimated Study Completion Date: February 2019
Estimated Primary Completion Date: February 2019 (Final data collection date for primary outcome measure)
Detailed Description:
PAO was designed as a joint preserving surgical procedure to compensate for a shallow acetabulum by re-orienting the acetabulum into a position that provides better coverage of the femoral head. Although the overall theory that increasing load bearing area (improving coverage of the femoral head) results in reduced joint stress is intuitive, the complex bony surface may not behave in this manner. It is possible that joint stress may increase when the acetabulum is reoriented into a position that increases load bearing area if post-operative joint congruency is worse than pre-operative.

Ages Eligible for Study:   18 Years to 40 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
18-40 years old

Inclusion Criteria:

  • Patients aged 18-40 years
  • Patients who have undergone periacetabular osteotomy by Dr. Peters for treatment of hip dysplasia.
  • Patients who have previously participated in IRB #10983 "Comparative Stress Analysis of Hip Dysplasia".

Exclusion Criteria:

  • Persons with a history of allergies to lidocaine or seafood.
  • Children under the age of 18.
  • Persons incarcerated, on trial, or parole.
  • Women who are pregnant.
  • Subjects who do not have high quality pre-operative images available or have not been surgically treated by periacetabular osteotomy.
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01575977

Sponsors and Collaborators
University of Utah
Principal Investigator: Andrew Anderson Orthopedic Surgery Operations
  More Information

Responsible Party: Andrew Anderson, Associate Professor, University of Utah Identifier: NCT01575977     History of Changes
Other Study ID Numbers: 43600
Study First Received: March 6, 2012
Last Updated: March 21, 2017

Additional relevant MeSH terms:
Hip Dislocation
Hip Dislocation, Congenital
Wounds and Injuries
Hip Injuries
Musculoskeletal Abnormalities
Musculoskeletal Diseases
Congenital Abnormalities processed this record on August 18, 2017