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Hip Preservation

Principal Investigators: Stephanie Mayer, MD; Travis Heare, MD; Courtney O’Donnell, MD

Research Assistant: Jenna Powell, BS

The hip preservation program at Children’s Hospital Colorado focuses on understanding and treating hip conditions across childhood and adolescence.
Hip conditions include:
- Developmental dysplasia of the hip
- Slipped capital femoral epiphysis
- Legg-Calve-Perthes disease
- Adolescent onset dysplasia
- Femoroacetabular impingement (FAI)

Current projects examine patient predisposition, long-term effects and progression of hip problems, and effective interventions to extend preservation of hip function and cartilage.

Finite element modeling using computer tomography (CT) scans to create 3-D models of hip bones with accurate representations of hip cartilage (seen in blue, green, and purple).

Biomechanical analysis of loading forces within the hip joint as femoral torsion changes for the Femoral Version study.

The Hip Preservation Program is involved in a few large-scale multicenter hip studies including Academic Network of Conservational Hip Outcomes Research (ANCHOR) and the International Perthes Study Group. ANCHOR studies long-term effectiveness and 10-year outcomes of surgical repair of adolescent onset hip dysplasia and femoroacetabular impingement. The International Perthes Study Group ( Identifier: NCT02040714), evaluates patients 5-18 years old who develop Legg-Calve-Perthes disease, focusing on disease progression, treatment options, and long-term outcomes across age groups.
“Movement Analysis of Patients with Symptomatic Femoroacetabular Impingement (FAI)” is a prospective study evaluating symptomatic FAI patients using 3-D motion capture technology to quantify joint forces, kinematics, and kinetics of morphologically normal and abnormal hips.
The study “Evaluation of the role of femoral version in acetabular loading and cartilage damage,” funded by the University of Colorado Orthopedics Pilot Grant, models the changes in loading forces within the hip joint as femoral torsion changes. This three-part study includes a retrospective review of patients, a biomechanical analysis of cadaver specimens, and finite element modeling to evaluate joint forces as hip anatomy changes. This study is being conducted in collaboration with the University of Colorado Denver Department of Biomechanical Engineering