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Journal of Bone and Joint Surgery - British Volume, Vol 89-B, Issue 5,
686-692.
doi: 10.1302/0301-620X.89B5.18695 Copyright © 2007 by British Editorial Society of Bone and Joint Surgery Vibration-assisted bone-graft compaction in impaction bone grafting of the femurB. J. R. F. Bolland, FRCS, Specialist Registrar in Trauma and Orthopaedics1; A. M. R. New, PhD, Lecturer Bioengineering Research Group2; S. P. G. Madabhushi, PhD, Reader3; R. O. C. Oreffo, DPhil, Professor1; and D. G. Dunlop, MD, FRCS(Trauma & Orth), Consultant Orthopaedic Surgeon1
1 Bone and Joint Research Group, Southampton University Hospitals, NHS Trust, Tremona Road, Southampton, SO16 6YD, UK. Correspondence should be sent to Mr B. J. R. F. Bolland; e-mail: bbolland{at}btinternet.com
The complications of impaction bone grafting in revision hip replacement includes fracture of the femur and subsidence of the prosthesis. In this in vitro study we aimed to investigate whether the use of vibration, combined with a perforated tamp during the compaction of morsellised allograft would reduce peak loads and hoop strains in the femur as a surrogate marker of the risk of fracture and whether it would also improve graft compaction and prosthetic stability. We found that the peak loads and hoop strains transmitted to the femoral cortex during graft compaction and subsidence of the stem in subsequent mechanical testing were reduced. This innovative technique has the potential to reduce the risk of intra-operative fracture and to improve graft compaction and therefore prosthetic stability.
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