Journal article
Role of Surgical Position on Interface Stress and Initial Bone Remodeling Stimulus around Hip Resurfacing Arthroplasty
The Journal of arthroplasty, v 24(7), pp 1137-1142
2009
PMID: 18823747
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Valgus alignment of femoral resurfacing components has been advocated to reduce proximal femur loading and thus minimize the risk for femoral neck fractures. However, such reduction in loading may exacerbate undesirable stress shielding. This study examined the effect of extreme implant orientations (±15°) and stem canal overreaming on initial bone remodeling stimulus using finite element models. The changes in implant-cement interface stresses due to implant alignment were also evaluated. The valgus model showed increased initial bone resorption stimulus, which extended distally and peripherally around the femoral neck. The peak implant-cement interface shear stress for the varus model was 10.9 MPa, exceeding the interface shear strength. Overreaming of the stem canal eliminated distal tip loading, but proximal stress shielding was still unavoidable. These data show bone loading and interface fixation trends emanating from valgus and varus implant positions that will be of interest to practicing physicians.
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Details
- Title
- Role of Surgical Position on Interface Stress and Initial Bone Remodeling Stimulus around Hip Resurfacing Arthroplasty
- Creators
- Kevin L. Ong - Exponent (United States)Judd S. Day - Drexel UniversitySteven M. Kurtz - Drexel UniversityRichard E. Field - South West London Elective Orthopaedic Center, Surrey, UKMichael T. Manley - Stryker
- Publication Details
- The Journal of arthroplasty, v 24(7), pp 1137-1142
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- College of Medicine; School of Biomedical Engineering, Science, and Health Systems
- Web of Science ID
- WOS:000270764600022
- Scopus ID
- 2-s2.0-70349406621
- Other Identifier
- 991019167591804721
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- Collaboration types
- Industry collaboration
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Orthopedics