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Femoro-Acetabluar Impingement: Role in Osteoarthritis of the Hip

English title Femoro-Acetabluar Impingement: Role in Osteoarthritis of the Hip
Applicant Leunig Michael
Number 104778
Funding scheme NRP 53 Musculoskeletal Health - Chronic Pain
Research institution Universitätsklinik Balgrist Departement für Orthopädie Universität Zürich
Institution of higher education University of Zurich - ZH
Main discipline Surgery
Start/End 01.04.2005 - 31.12.2010
Approved amount 519'448.00
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Keywords (4)

Hip; Osteoarthritis; Aetiology; Prevention

Lay Summary (English)

Lay summary
Etiology of primary osteoarthrititis of the hip

Ostheoarthritis (OA) of the hip is one of the major causes of pain and disability in the developed world. Resulting therapeutic interventions and socioeconomic expenditures pose a considerable burden on health and social services. Based on experimental and clinical studies, including in situ inspection in a series of 600 consecutive adolescents and young adults undergoing surgical dislocations of the hip, we propose femoro-acetabular impingement (FAI) to cause early OA in the non-dysplastic hip: morphologic deviations of the proximal femur with a decreased anterior head-neck offset (DAHO) may lead to repetitive trauma of the peripheral articular cartilage during flexion and internal rotation, particularly in individuals taking regular exercises. However, the diagnostic accuracy of clinical tests used to screen for DAHO and FAI is uncertain, reliable estimates of the prevalence of DAHO are lacking, and the prognostic relevance of DAHO for the development of early hip pain and OA is unclear.

To determine:
• the prevalence of DAHO in the general population
• the diagnostic accuracy of the clinical test used to screen for DAHO and FAI; and whether DAHO is associated with an increased risk to develop hip pain and early signs of OA.

This project will contribute to our understanding of the mechanisms leading to the development of OA in the non-dysplastic hip. Adaptation of professional and sport activities and, potentially, the use of joint preserving surgery might prevent or at least delay to development of OA in individuals with DAHO.

Direct link to Lay Summary Last update: 21.02.2013

Responsible applicant and co-applicants


Associated projects

Number Title Start Funding scheme
160153 Femoro-acetabular impingement and its role in the development of osteoarthritis of the hip: A 10-year follow-up study of the Sumiswald cohort 01.04.2016 Project funding (special)
153469 Do high-impact sports in children promote abnormal physeal growth and cam-type deformity of the femoral head during the adolescent growth spurt? - A longitudinal study - 01.03.2015 Project funding