In some designs of hip joint simulator the cost of building a highly complex machine has been offset with the requirement for a large number of test stations. The application of the wear results generated by these machines depends on their ability to reproduce physiological wear rates and processes. In this study a hip joint simulator has been shown to reproduce physiological wear using only one load vector and two degrees of motion with simplified input cycles. The actual path of points on the femoral head relative to the acetabular cup were calculated and compared for physiological and simplified input cycles. The in vitro wear rates were found to be highly dependent on the shape of these paths and similarities could be drawn between the shape of the physiological paths and the simplified elliptical paths.
MalchauH.HerbertsP.Prognosis of total hip replacement: Surgical and cementing technique in THR: A revision study of 134056 primary operations. Scientific Exhibition presented at the 63rd Annual Meeting of the American Academy of Orthopaedic Surgeons, Atlanta, February 1996.
2.
CampbellP.DoornP.DoreyF.AmstutzH. C.Wear and morphology of ultra-high molecular weight polyethylene wear particles from total hip replacements. Proc. Instn Mech. Engrs, Parts H, Journal of Engineering in Medicine, 1996, 210 (H3), 167–174.
3.
GoodmanS.AspenbergP.SongY.KnoblishG.HuieP.RegulaD.LidgrenL.Tissue ingrowth and differentiation in the bone-harvest chamber in the presence of cobalt-chromium-alloy and high-density-polyethylene particles. J. Bone Jt Surg., 1995, 77-A (4), 1025–1035.
4.
ClarkeI. C.CampbellP.Interface failure dynamics: Osteoclastic and macrophagic bone loss. In Progress in Bioengineering (Ed. PaulJ. P.), Proceedings of International Seminar, Glasgow, September 1998, 1989, pp. 104–115 (Hilger, Bristol).
5.
HowieD. W.Vernon-RobertsB.OakshottR.MantheyB.A rat model of resorption of bone at the cement-bone interface in the presence of polyethylene wear particles. J. Bone Jt Surg., 1988, 70-A (2), 257–263.
6.
WillertH.-G.SemlitschM.Reactions of the articular capsule to wear products of artificial joint prostheses. J. Biomed. Mater. Res., 1977, 11, 157–164.
7.
KobayashiA.KadoyaY.BonfieldW.RevellP. A.YamacT.ScottG.FreemanM. A. R.OhashiH.YamanoY.Quantitative analysis of polyethylene wear particles in osteolytic regions around failed total joint prostheses. In Proceedings of 43rd Annual Meeting of the Orthopaedic Research Society, San Francisco, February 1997, p. 68 (Orthopaedic Research Society).
8.
ClarkeI. C.Wear of artificial joint materials IV: Hip joint simulator studies. Engng in Medicine, 1981, 10 (4), 189–198.
9.
WrightK. W.J.ScalesJ. T.The use of hip joint simulators for the evaluation of wear of total hip prostheses. In Evaluation of Biomaterials (Eds WinterG. D.LerayJ. L.de GrootK.), 1980, pp. 135–146 (John Wiley, Chichester).
10.
Duff-BarclayI.SpillmanD. T.Total human hip joint prostheses—a laboratory study of friction and wear. Proc. Instn Mech. Engrs, 1967, 181 (3J), 90–103.
11.
WangA.StarkC.DumbletonJ. H.Mechanistic and morphological origins of ultra-high molecular weight polyethylene wear debris in total joint replacement prostheses. Proc. Instn Mech. Engrs. Part H, Journal of Engineering in Medicine, 1996, 210 (H3), 141–155.
12.
BragdonC. R.O'ConnorD. O.LowensteinJ. D.JastyM.SyniutaW. D.The importance of multidirectional motion on the wear of polyethylene. Proc. Instn Mech. Engrs. Parts H, Journal of Engineering in Medicine, 1996, 210 (H3), 157–165.
13.
HaileyJ. L.InghamE.StoneM. H.WroblewskiB. M.FisherJ.Ultra-high molecular weight polyethylene wear debris generated in vivo and in laboratory tests: The influence of counterface roughness.Proc. Instn Mech. Engrs, Part H, Journal of Engineering in Medicine, 1996, 210 (H1), 3–10.
14.
WangA.EssnerA.StarkC.DumbletonJ. H.Comparison of the size and morphology of UHMWPE wear debris produced by a hip joint simulator under serum and water lubricated conditions. Biomaterials, 1996, 17 (9), 865–871.
15.
CooperJ. R.DowsonD.FisherJ.The effect of transfer film and surface roughness on the wear of lubricated ultra high molecular weight polyethylene. Clin. Mater., 1993, 14, 295–302.
16.
WrightK. W. J.DobbsH. S.ScalesJ. T.Wear studies on prosthetic materials using the pin-on-disc machine. Biomaterials, 3, 41–48.
17.
McKellopH.ClarkeI. C.MarkolfK. L.AmstutzH. C.Wear characteristics of UHMW polyethylene: A method for accurately measuring extremely low wear rates. J. Biomed. Mater. Res., 1978, 12, 895–927.
18.
WangASunD. C.YauS-S.EdwardsB.SokolM.EssnerA.PolineniV. K.StarkC.DumbletonJ. H.Orientation softening in the deformation and wear of ultra-high molecular weight polyethylene. Wear, 1997, 203–204, 230–241.
19.
McKellopH. A.RöstlundT. V.The wear behaviour of ion-implanted Ti-6Al-4V against UHMW polyethylene. J. Biomed. Mater. Res., 1990, 24, 1413–1425.
20.
DowsonD.JobbinsB.Design and development of a versatile hip joint simulator and a preliminary assessment of wear and creep in Charnley total replacement hip joints. Engng in Medicine, 1988, 17 (3), 111–117.
21.
BigsbyR. J. A.HardakerC. S.FisherJ.Wear of ultra-high molecular weight polyethylene in a physiological hip joint simulator in the anatomical position using bovine serum as a lubricant. Proc. Instn Mech. Engrs, Part H, Journal of Engineering in Medicine, 1997, 211 (H3), 265–270.
22.
BesongA. A.BigsbyR. J. A.BarbourP. S.M.FisherJ.Effect of head size and loading regime on the wear of UHMWPE acetabular cups in a hip simulator. In Proceedings of the World Tribology Congress, London, September 1997, p. 732 (Mechanical Engineering Publications, London).
23.
SchmalzriedT. P.SzuszczewiczE. S.NorthfieldM. R.AkizukiK. H.FrankelR. E.BelcherG.AmstutzH. C.Quantitative assessment of activity in joint replacement patients. In Proceedings of 43rd Annual Meeting of the Orthopaedic Research Society, San Francisco, February 1997, p. 284 (Orthopaedic Research Society).
24.
SaikkoV. O.A three-axis hip joint simulator for wear and friction studies on total hip prostheses. Proc. Instn Mech. Engrs, Part H, Journal of Engineering in Medicine, 1996, 210 (H3), 175–186.
25.
DerbyshireB.FisherJ.DowsonD.HardakerC.BrummittK.Comparative study of the wear of UHMWPE with zirconia ceramic and stainless steel femoral heads in artificial hip joints. Med. Engng Phys., 1994, 16, 229–236.
26.
DerbyshireB.HardakerC. S.FisherJ.DowsonD.BrummittK.Assessment of the change in volume of acetabular cups using a co-ordinate measuring machine. Proc. Instn Mech. Engrs, Part H, Journal of Engineering in Medicine, 1994, 208 (H3), 151–158.
27.
VicecontiM.CavallottiG.AndrisanoA. O.ToniA.Discussion on the design of a hip joint simulator. Med. Engng Phys., 1996, 18, 234–240.
28.
PaulJ. P.Forces transmitted by joints in the human body. Proc. Instn Mech. Engrs, 1967, 181 (3J), 8–15.
29.
JohnstonR. C.SmidtG. L.Measurement of hip-joint motion during walking. J. Bone Jt Surg., 1969, 51-A (6), 1083–1094.
30.
HallR. M.UnsworthA.SineyP.WroblewskiB. M.Wear in retrieved Charnley acetabular sockets. Proc. Instn Mech. Engrs, Part H, Journal of Engineering in Medicine, 1996, 210 (H3), 197–208.
31.
AtkinsonJ. R.DowsonD.IsaacJ. H.WroblewskiB. M.Laboratory wear tests and clinical observations of the penetration of femoral heads into acetabular cups in total replacement hip joints III: The measurement of internal volume changes in explanted Charnley sockets after 2–16 years in vivo and the determination of wear factors. Wear, 1985, 104, 225–244.
32.
KestrisU.IlchmannT.WingstrandH.önnerfältR.Polyethylene wear in Scanhip arthroplasty with a 22 or 32 mm head. Acta Orthorp. Scand., 1996, 67(2), 125–127.
33.
LivermoreJ.IlstrupD.MorreyB.Effect of femoral head size on wear of the polyethylene acetabular component. J. Bone Jt Surg., 1990, 72-A(4), 518–528.
34.
CharnleyJ.HalleyD. K.Rate of wear in total hip replacement. Clin. Orthop. Rel. Res., 1975, 112, 170–179.
35.
WroblewskiB. M.SineyP. D.DowsonD.CollinsS. N.Prospective clinical and joint simulator studies of a new total hip arthroplasty using alumina ceramic heads and cross-linked polyethylene cups. J. Bone Jt Surg., 1996, 78-B (2), 280–285.
36.
SychterzC. J.MoonK. H.HashimotoY.TerefenkoK. M.EnghC. A.BauerT. W.Wear of polyethylene cups in total hip arthroplasty. J. Bone Jt Surg., 1996, 78-A (8), 1193–1200.
37.
TipperJ. L.InghamE.HaileyJ. L.BesongA. A.WroblewskiB. M.StoneM. H.FisherJ.Quantitative analysis of polyethylene wear debris, wear rate and head damage in retrieved Charnley hip prostheses. J. Mater. Sci.; Mater. Med. (in press).
38.
SeedhomB. B.WallbridgeN. C.Walking activities and wear of prostheses. Ann. Rheum. Dis., 1985, 44, 838–843.
