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Hip Impingement - Understanding Cartilage Damage

This study is currently recruiting participants. (see Contacts and Locations)
Verified January 2014 by Ottawa Hospital Research Institute
Canadian Institutes of Health Research (CIHR)
Information provided by (Responsible Party):
Ottawa Hospital Research Institute Identifier:
First received: August 19, 2010
Last updated: January 21, 2014
Last verified: January 2014

Femoro-acetabular impingement (FAI) is a known cause of hip pain and possibly a major cause of adult hip osteoarthritis. The relationship between cam-type FAI deformity characteristics and joint degradation to better identify 'at-risk' patients requiring corrective surgery will be scrutinized to gain a better understanding of the condition's natural history. The influence of certain morphologies (e.g. size and location of the deformity) will be analyzed to determine if this leads to aberrant loading of regions of the cartilage and subchondral bone, resulting in cartilage damage and joint degradation. Additionally, this research will determine if changes in the subchondral bone precede cartilage degeneration.

The methodology for establishing the morphology/cartilage degeneration relationship includes Magnetic Resonance Image (MRI) analysis, three-dimensional motion analysis and computer simulation/finite element analysis.

The outcomes of this research may lead to a reduction in total hip replacement cases by as much as 70%, saving many Canadians from a painful and debilitating condition and reducing costs to the Canadian health care system by as much as $290 million annually.

Condition Intervention
Femoroacetabular Impingement
Procedure: MRI, qCT, motion analysis

Study Type: Interventional
Study Design: Allocation: Non-Randomized
Intervention Model: Parallel Assignment
Masking: Open Label
Official Title: Femoroacetabular Impingement: Correlating Hip Morphology to Changes in Cartilage and Subchondral Bone

Further study details as provided by Ottawa Hospital Research Institute:

Primary Outcome Measures:
  • Magnetic Resonance Imaging (MRI) [ Time Frame: Pre-op (within 6 weeks of surgery) ] [ Designated as safety issue: No ]

Secondary Outcome Measures:
  • Quantitative Computed Tomography (qCT) [ Time Frame: pre-op (within 6 weeks of surgery) ] [ Designated as safety issue: No ]

  • Quantitative Motion Analysis [ Time Frame: pre-op (within 6 weeks of surgery) ] [ Designated as safety issue: No ]
    Quantitative motion analysis recording and quantifying kinetic and kinematic data occuring at the hip joint. Data recorded during normal level walking and during completion of simulated daily tasks (uphill, downhill walking, stairs, squatting, sitting, rising from a chair).

Estimated Enrollment: 75
Study Start Date: September 2010
Estimated Study Completion Date: September 2015
Estimated Primary Completion Date: September 2015 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Controls Procedure: MRI, qCT, motion analysis
MRI, qCT, motion analysis
Other Name: non applicable
Asymptomatics Procedure: MRI, qCT, motion analysis
MRI, qCT, motion analysis
Other Name: non applicable
Symptomatics Procedure: MRI, qCT, motion analysis
MRI, qCT, motion analysis
Other Name: non applicable


Ages Eligible for Study:   18 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Group I: subjects with bilateral cam deformity and unilateral symptoms Hip pain longer than 6 months referred to the groin/lateral aspect of hip Positive impingement sign

Plain radiographs:

  • absence of arthritis (Tonnis Grade 0 or 1)
  • absence of dysplasia (center edge >25 degrees) on AP radiograph
  • α-angle greater than 55 degrees on the Dunn view

Group II: asymptomatic subjects with cam deformity

  • These patients will be recruited from our prevalence study (2006.813) with 200 asymptomatic individuals using MRI with radial sequences

Group III: asymptomatic control subjects with no deformity

  • These patients will be recruited from our prevalence study (2006.813) which established their hip joint as having a normal femoral head neck contour. These subjects will be age-matched to Group I

Exclusion Criteria:

  • Participants who do not meet the criteria above.
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01546493

Canada, Ontario
The Ottawa Hospital Recruiting
Ottawa, Ontario, Canada, K1H 8L6
Contact: Paul E Beaule, MD, FRCSC    613-737-8899 ext 73265   
Principal Investigator: Paul E Beaule, MD, FRCSC         
Sponsors and Collaborators
Ottawa Hospital Research Institute
Canadian Institutes of Health Research (CIHR)
Principal Investigator: Paul E Beaule, MD, FRCSC University of Ottawa / The Ottawa Hospital
  More Information

No publications provided

Responsible Party: Ottawa Hospital Research Institute Identifier: NCT01546493     History of Changes
Other Study ID Numbers: OHREB 2009-537
Study First Received: August 19, 2010
Last Updated: January 21, 2014
Health Authority: Canada: Ethics Review Committee

Additional relevant MeSH terms:
Femoracetabular Impingement
Joint Diseases
Musculoskeletal Diseases
Pathologic Processes processed this record on November 27, 2014