Stress Analysis of Hip Dysplasia

Stress Analysis of Hip Dysplasia After Corrective Surgery

Status

Completed

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT01575977

Enrollment

Registered

2012-04-12

Start date

2011-02-28

Completion date

2019-08-31

Last updated

2019-11-04

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Hip Dysplasia

Brief summary

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

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.

Interventions

None listed

Study design

Observational model

OTHER

Time perspective

PROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

18 Years to 40 Years

Healthy volunteers

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.

Design outcomes

Primary

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

Outcome results