Recruiting

Periacetabular Osteotomy & Arthroscopy

Sponsor:

Ottawa Hospital Research Institute

Code:

NCT03481010

Conditions

Hip Dysplasia

Eligibility Criteria

Sex: All

Age: 16 - 50

Healthy Volunteers: Not accepted

Interventions

PAO with hip arthroscopy

PAO without hip arthroscopy

Study Details

Brief summary:

At present, it is not clear whether performing a hip arthroscopy at the same time as a PAO improves patient outcomes after surgery compared to a PAO alone.

This research project will randomize patients to receive either a PAO alone, or a PAO and a hip arthroscopy at the same time.

Conditions

Hip Dysplasia

Study ID

NCT03481010

Start date

Apr 4, 2018

Status verified date

Dec, 2025

Completion date

Dec 31, 2030

Anticipated

Primary completion date

Jul 31, 2030

Anticipated

Eligibility Criteria

Eligibility Criteria

Sex: All

Age: 16 - 50

Healthy Volunteers: Not accepted

Inclusion Criteria:

  • Skeletally mature patient undergoing Bernese periacetabular osteotomy for symptomatic acetabular dysplasia/hip instability
  • Pre-Operative MRI at 3T and/or gadolinium MR arthrogram
  • Age, 16-50 years old
  • Patient capable of giving informed consent

Exclusion Criteria:

  • Prior hip/pelvis surgery of any kind on the surgical side
  • Prior hip arthroplasty surgery on either side
  • Radiographic evidence of arthritis (i.e. Tönnis grade =2)
  • Known connective tissue disorder (e.g. Ehlers-Danlos Syndrome, etc.)
  • Known neuromuscular disorder (e.g. Cerebral Palsy, Spina bifida, etc.)
  • Known skeletal dysplasia (e.g. Achondroplasia, Multiple Epiphyseal Dysplasia, etc.)
  • Cognitive impairment that prevents accurate completion of patient-reported outcome questionnaires.
  • Patient unable/unwilling to complete all required follow-up visits
  • Concurrent proximal femoral osteotomy and/or surgical hip dislocation

Study Design

Enrollment

204 participants

Anticipated

Allocation

Randomized

Intervention Model

Parallel Assignment

Primary purpose

Treatment

Interventions and Outcome Measures

Arms

experimental: PAO with hip arthroscopy

Patient's in the "Scope PAO" group have been diagnosed with hip dysplasia and a decision has been made between the patient and the surgeon that the best way to treat the hip problems is with surgery. Patient's in the "Scope-PAO" group have been randomized to receive a periacetabular osteotomy with a hip arthroscopy.

active comparator: PAO without hip arthroscopy

Patient's in the "PAO-only" group have been diagnosed with hip dysplasia and a decision has been made between the patient and the surgeon that the best way to treat the hip problems is with surgery. Patient's in the "PAO-only" group have been randomized to receive a periacetabular osteotomy only.

Interventions

PAO with hip arthroscopy

Participants who are randomized to the Scope-PAO group will receive central compartment hip arthroscopy in addition to the PAO.

PAO without hip arthroscopy

Participants who are randomized to the "PAO-only" group will receive a Bernese Periacetabular Osteotomy (PAO) for treatment of hip dysplasia.

Primary outcome measure

  • iHOT-33 [ Time Frame: 24 months ]

Central Contacts and Locations

Central contacts

Geoffrey Wilkin, MD

613-798-5555gwilkin@toh.ca

Cheryl Kreviazuk

613-737-8920ckreviazuk@ohri.ca

Locations

Northwestern University

Recruiting

Chicago, Illinois, United States, 60611

William Beaumont Hospital

Recruiting

Royal Oak, Michigan, United States, 48073

The Washington University

Recruiting

St Louis, Missouri, United States, 63130

Hospital for Special Surgery

Recruiting

New York, New York, United States, 10021

Children's Hospital of Eastern Ontario

Recruiting

Ottawa, Ontario, Canada, K1H 8L1

Ottawa Hospital Research Institute

Recruiting

Ottawa, Ontario, Canada, K1H8L6

Contacts

Geoffrey Wilkin, MD

613-737-8920

Research Team

613-737-8920

CHU de Québec - Université Laval

Recruiting

Québec, Canada, G1J 1Z4

More Information

Sponsor

Ottawa Hospital Research Institute

Last update posted

Dec 30, 2025

Last verified

Dec, 2025

Trial information was received from ClinicalTrials.gov and was last updated on 2026-09-09. This information was provided to ClinicalTrials.gov by Ottawa Hospital Research Institute on 2025-12-30.