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Is a valgus position of the femoral component in hip resurfacing protective against spontaneous fracture of the femoral neck?
- Source :
- The Journal of Bone and Joint Surgery. British volume. :545-551
- Publication Year :
- 2009
- Publisher :
- British Editorial Society of Bone & Joint Surgery, 2009.
-
Abstract
- The aim of our study was to investigate whether placing of the femoral component of a hip resurfacing in valgus protected against spontaneous fracture of the femoral neck. We performed a hip resurfacing in 20 pairs of embalmed femora. The femoral component was implanted at the natural neck-shaft angle in the left femur and with a 10° valgus angle on the right. The bone mineral density of each femur was measured and CT was performed. Each femur was evaluated in a materials testing machine using increasing cyclical loads. In specimens with good bone quality, the 10° valgus placement of the femoral component had a protective effect against fractures of the femoral neck. An adverse effect was detected in osteoporotic specimens. When resurfacing the hip a valgus position of the femoral component should be achieved in order to prevent fracture of the femoral neck. Patient selection remains absolutely imperative. In borderline cases, measurement of bone mineral density may be indicated.
- Subjects :
- Male
musculoskeletal diseases
medicine.medical_specialty
Arthroplasty, Replacement, Hip
medicine.medical_treatment
Dentistry
Bone Density
Materials Testing
Humans
Medicine
Orthopedics and Sports Medicine
Femur
Aged
Femoral neck
Aged, 80 and over
Bone mineral
biology
business.industry
Patient Selection
Biomechanics
Middle Aged
musculoskeletal system
biology.organism_classification
Hip resurfacing
Femoral Neck Fractures
Valgus
medicine.anatomical_structure
Orthopedic surgery
Fracture (geology)
Osteoporosis
Female
Surgery
Stress, Mechanical
Tomography, X-Ray Computed
business
Subjects
Details
- ISSN :
- 20445377 and 0301620X
- Database :
- OpenAIRE
- Journal :
- The Journal of Bone and Joint Surgery. British volume
- Accession number :
- edsair.doi.dedup.....a2b7b8afe1d8dbdb910f8c5d5fa7c09a
- Full Text :
- https://doi.org/10.1302/0301-620x.91b4.21355