Stress Analysis of Hip Dysplasia

Stress Analysis of Hip Dysplasia After Corrective Surgery

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

Study Overview

• Status: Completed
• Conditions: 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
• Enrollment (Actual): 12

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 14 years to 36 years (Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

• Sampling Method: Non-Probability Sample

Study Population

18-40 years old

Description

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.

Study Plan

How is the study designed?

Design Details

• Observational Models: Other
• Time Perspectives: Prospective

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Time Frame
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.	1 year post surgery

Collaborators and Investigators

• Sponsor: University of Utah

Study record dates

Study Major Dates

• Study Start: February 1, 2011
• Primary Completion (Actual): August 1, 2019
• Study Completion (Actual): August 1, 2019

Study Registration Dates

• First Submitted: March 6, 2012
• First Submitted That Met QC Criteria: April 11, 2012
• First Posted (Estimate): April 12, 2012

Study Record Updates

• Last Update Posted (Actual): November 4, 2019
• Last Update Submitted That Met QC Criteria: October 31, 2019
• Last Verified: October 1, 2019

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Wounds and Injuries; Congenital Abnormalities; Joint Diseases; Musculoskeletal Diseases; Hip Injuries; Musculoskeletal Abnormalities; Joint Dislocations; Hip Dislocation; Developmental Dysplasia of the Hip; Hip Dislocation, Congenital
• Other Study ID Numbers: 43600