Interlocked intramedullary nailing is widely used for the fixation of fractures in long bones. This study investigated the biomechanical aspects of load sharing between the implant and bone for two different types of nails—a fully slotted AO/ASIF nail and a non-slotted Russell-Taylor nail—in a simulated bone healing model using composite model femora. The results demonstrated the different load-sharing characteristics of the two nail types in torsion but similar behaviour in bending. The techniques applied provided a useful basis on which to evaluate these types of implants.
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References
1.
AlhoA.MoenO.HusbyT.RonningenH.SkjeldalS.Slotted versus non-slotted intramedullary nailing for femoral shaft fixtures. Arch. Orthop. Trauma Surg., 1992, 111, 91–95.
2.
BlumbergK. D.FosterW. C.BlumbergJ. F.AdelaarR. S.DebloisM. E.HusseyR. W.LoughranT. P.CardeaJ. A.A comparison of the Brooker-Wills and Russell-Taylor nails for the treatment of patients who have fractures of the femoral shaft. J. Bone Jt Surg., August 1990, 72-A(7), 1019–1024.
SzivekJ. A.WengM.KarpmanR.Variability in the torsional and bending response of a commercially available composite femur. J. Appl. Biomechanics, 1990, 1, 183–186.
5.
BealsN.Evaluation of a composite sawbone femur model. Research report, Richards Medical Company, Memphis, Tennessee, April 1987.
6.
McLarenA. C.MageeF.HedleyA.RehkopfJ.The effect of intramedullary rod stiffness on fracture healing: mechanical aspects. Trans. 37th Annual Meeting, Orthop. Res. Soc., 1991, 16(2), 445.
7.
MichelM.SchneiderE.GengeM.PerrenS.Loading history of an interlocking femoral nail subsequent to fracture treatment. Trans. 37th Annual Meeting, Orthop. Res. Soc., 1991, 16(1), 141.
8.
BiancoP. T.BechtoldJ. E.KyleR. F.GustiloR. B.Synthetic composite femurs for use in evaluation of torsional stability of cementless femoral prostheses. Joint Session of ACE/ASME, San Diego, California, July 1989.
9.
LynchG.DavidsonJ.Motion at the bone interface with slotted and unslotted intramedullary nails. Research report, Richards Medical Company, Memphis, Tennessee, 1989.
10.
CoveyD. C.SahaS.LipkaJ. M.AlbrightJ. A.Biomechanical comparison of slotted and non-slotted interlocking nails in distal femoral shaft fractures. Clin. Orthop., 1990, 252, 246–251.
11.
BealsN.DurhamG.LynchG.Mechanical characterization of interlocking intramedullary nails. Research report, Richards Medical Company, Memphis, Tennessee, 1988.
12.
NordinM.FrankelV. H.Basic biomechanics of the musculoskeletal system, 2nd edition, 1989 (Lea and Febiger, Philadelphia, Pennsylvania).
13.
GreenbergS. W.GonzalezD.GurdjianE. S.ThomasL. M.Changes in physical properties of bone between the in vivo, freshly dead, and embalmed conditions. Proceedings of the Twelfth Stapp Car Crash Conference, 1968, pp. 271–279 (Society of Automotive Engineering, Warrendale, Pennsylvania).
14.
MarketM. D.WikenheiserM. A.ChaoE. Y. S.Fracture callus material properties: relationship between local and structural properties of bone. Trans. 37th Annual Meeting, Orthop. Res. Soc., 1991, 16(1), 175.
15.
GoodmanS.AspenbergP.Effects of mechanical stimulation on the differentiation of hard tissues. Biomaterials, 1993, 14(8), 563–569.
