NCT03181048 · Mayo Clinic
Clinical Trial of Concomitant Hip Arthroscopy During PAO
What this study is about
The study will assess the outcomes of patients treated with concomitant hip arthroscopy at the time of periacetabular osteotomy (PAO) for patients with hip dysplasia compared with patients treated with PAO alone.
View original scientific description
The study will assess the outcomes of patients treated with concomitant hip arthroscopy at the time of periacetabular osteotomy (PAO) for patients with hip dysplasia compared with patients treated with PAO alone.
Interventions
PROCEDURE
Periacetabular osteotomy
The Bernese periacetabular osteotomy has become the osteotomy of choice in North America for correction of the dysplastic hip. The ability to position the acetabular component in a specifically desired position for each individual patient improves joint biomechanics, restores joint balance and stability, and offloads the structures at risk for damage such as the labrum and the adjacent articular cartilage.
PROCEDURE
Periacetabular osteotomy with hip arthroscopy
An intraarticular assessment with hip arthroscopy (HA) at the time of periacetabular osteotomy allows the surgeon to assess and treat the associated labral and chondral pathology and allows the surgeon to treat abnormalities of the femoral head junction.
Primary outcome measures
Mean score of Hip Disability and Osteoarthritis Outcome (Hoos)
Time frame: 1 year follow-up time point
Score ranges from 0-100 with higher scores representing better function.
Mean score of Western Ontario and McMaster Universities Arthritis Index (WOMAC)
Time frame: 1 year follow-up time point
The scores range from 0-4 in 24 different categories that are broken up into three subcategories: pain, stiffness and physical function.
Mean score of University California Los Angeles (UCLA) activity assessment
Time frame: 1 year follow-up time point
Measured on a 1-10 scale: 1) wholly inactive, dependent on others; 2) mostly inactive, restricted to minimal activities of daily living; 3) sometimes participate in mild activities such as walking, limited housework, or shopping; 4) regularly participate in mild activities; 5) sometimes participate in moderate activities such as swimming and unlimited housework or shopping; 6) regularly participate in moderate activities; 7) regularly participate in active events such as bicycling; 8) regularly participate in very active events such as bowling or golf; 9) sometimes participate in impact sports such as jogging, tennis, or skiing, or heavy labor; and 10) regularly participate in impact sports.
Mean score of the Marx Activity Scale (MARX)
Time frame: 1 year follow-up time point
Score is measured from 0-4.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Diagnosis of hip dysplasia (DDH) electing periacetabular osteotomy (PAO) for treatment
- Skeletally mature
- Age 15 - 55
- Tonnis Grade 0 or 1 osteoarthritis (minimal or no arthritis)
- Ability to receive a standard of care preoperative (magnetic resonance imaging) MRI arthrogram of the hip
Exclusion criteria
- Pregnant women
- Previous surgery about the hip
- Patients receiving PAO for acetabular retroversion in the absence of DDH
- Previous hip arthroscopy to address intra-articular pathology
Where
- Rochester, Minnesota
Related conditions & keywords
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Sep 5, 2025 · Source of record for eligibility and locations