Stress Analysis of Hip Dysplasia

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT01575977
Recruitment Status : Enrolling by invitation
First Posted : April 12, 2012
Last Update Posted : April 30, 2018
Information provided by (Responsible Party):
Andrew Anderson, University of Utah

Brief Summary:
The main objective of this study is to predict cartilage contact pressures in the hip after periacetabular osteotomy (PAO).

Condition or disease
Hip Dysplasia

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.

Study Type : Observational
Estimated Enrollment : 24 participants
Observational Model: Other
Time Perspective: Prospective
Official Title: Stress Analysis of Hip Dysplasia After Corrective Surgery
Study Start Date : February 2011
Estimated Primary Completion Date : February 2019
Estimated Study Completion Date : February 2019

Primary Outcome Measures :
  1. 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 ]

Information from the National Library of Medicine

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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.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT01575977

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

Responsible Party: Andrew Anderson, Associate Professor, University of Utah Identifier: NCT01575977     History of Changes
Other Study ID Numbers: 43600
First Posted: April 12, 2012    Key Record Dates
Last Update Posted: April 30, 2018
Last Verified: April 2018

Additional relevant MeSH terms:
Hip Dislocation
Hip Dislocation, Congenital
Joint Dislocations
Bone Diseases
Musculoskeletal Diseases
Wounds and Injuries
Hip Injuries
Musculoskeletal Abnormalities
Congenital Abnormalities