title: Vibration-assisted bone-graft compaction in impaction bone grafting of the femur.
abstract: 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.
authors.affiliation: Bone and Joint Research Group, Southampton University Hospitals, NHS Trust, Tremona Road, Southampton, SO16 6YD, UK. bbolland@btinternet.com
authors.forename: B J R F
authors.initials: BJ
authors.lastname: Bolland
authors.forename: A M R
authors.initials: AM
authors.lastname: New
authors.forename: S P G
authors.initials: SP
authors.lastname: Madabhushi
authors.forename: R O C
authors.initials: RO
authors.lastname: Oreffo
authors.forename: D G
authors.initials: DG
authors.lastname: Dunlop
mesh_terms: D019644:Arthroplasty, Replacement, Hip / Q000379:methods*; D016025:Bone Transplantation / Q000379:methods*; D005264:Femoral Fractures / Q000517:prevention & control; D005269:Femur / Q000601:surgery*; D006801:Humans; D066298:In Vitro Techniques; D008422:Materials Testing / Q000379:methods; D011475:Prosthesis Failure; D012086:Reoperation / Q000379:methods; D013314:Stress, Mechanical; D014732:Vibration