An interventional study of Periacetabular osteotomy and Periacetabular osteotomy with hip arthroscopy in Hip Dysplasia, sponsored by Mayo Clinic. Recruiting at 1 site in United States. Open to participants aged 15 Years to 55 Years. Per ClinicalTrials.gov, last updated 2026-09-11.
Sponsored by Mayo Clinic · Not applicable, Interventional, and Treatment
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.
There are currently no absolute indications for intraarticular assessment at the time of periacetabular osteotomy (PAO). Based on investigators' review of the literature and experience, patients who may benefit from intraarticular assessment are those with radiographic or MRI evidence of damage where an intraarticular inspection may help in determining whether a PAO is a reasonable procedure, those with mechanical symptoms likely related to labral pathology, round ligament or cartilage problems and those with hip dysplasia and cam deformities with limited range of motion that may benefit from femoral head neck junction osteochondroplasty. However, despite these relative indications today there is no clear evidence to suggest that these patients will do better than those that do not have intraarticular work done. Hence, the objective of this project is to determine whether intraarticular work at the time of PAO surgery leads to improved pain and function when compared to patients that do not undergo intraarticular work at the time of PAO.
107 studies on the registry are indexed under Hip Dislocation; 36 are open to participants now.
This study's planned enrollment of 106 is above the median of 86 across 64 interventional studies indexed under Hip Dislocation.
Browse Hip Dislocation studies →Mayo Clinic is the lead sponsor of 3,269 studies on the registry; 672 are open to participants now.
Of its 452 completed or terminated interventional studies of FDA-regulated products, 321 (71%) have results posted.
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Exclusion Criteria:
Standard periacetabular osteotomy on the day of surgery.
Procedure: Periacetabular osteotomy
Hip arthroscopy on the day of surgery, followed by a standard periacetabular osteotomy.
Procedure: Periacetabular osteotomy with hip arthroscopy
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.
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.
Mean score of Hip Disability and Osteoarthritis Outcome (Hoos)
Score ranges from 0-100 with higher scores representing better function.
Time frame: 1 year follow-up time point
Mean score of Western Ontario and McMaster Universities Arthritis Index (WOMAC)
The scores range from 0-4 in 24 different categories that are broken up into three subcategories: pain, stiffness and physical function.
Time frame: 1 year follow-up time point
Mean score of University California Los Angeles (UCLA) activity assessment
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.
Time frame: 1 year follow-up time point
Mean score of the Marx Activity Scale (MARX)
Score is measured from 0-4.
Time frame: 1 year follow-up time point
Plan to share: No — Only study personnel authorized by the investigator will collect data/enroll subjects. Data will be stored in electronic files and/or a cabinet, with access to study personnel as authorized by the investigator. The investigator will review the data on a regular basis (at least annually) to verify the validity of the data.
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