Evidence Based Recommendations for Reducing Head-Neck Taper Connection Fretting Corrosion in Hip Replacement Prostheses

Lucas LC Buchanan RA Lemons JE Investigations on the galvanic corrosion of multialloy total hip prostheses. J Biomed Mater Res 1981;15(5):731–747

Langton DJ Sidaginamale R Lord JK Nargol AV Joyce TJ Taper junction failure in large-diameter metal-on-metal bearings. Bone Joint Res 2012;1(4):56–63

McGrory BJ MacKenzie J Babikian G A High Prevalence of Corrosion at the Head-Neck Taper with Contemporary Zimmer Non-Cemented Femoral Hip Components. J Arthroplasty 2015;30(7):1265–1268

McPherson EJ Dipane MV Sherif SM Massive Pseudotumor in a 28 mm Ceramic- Polyethylene Revision THA : A Case Report. Reconstr Rev 2014;4(1):11–17

Moher D Liberati A Tetzlaff J Altman DG PRISMA Group. Preferred reporting items for systematic reviews and meta-analyses: the PRISMA statement. PLoS Med 2009;6(7):e1000097.

Werner PH Ettema HB Witt F Morlock MM Verheyen CCPM Basic principles and uniform terminology for the head-neck junction in hip replacement. Hip Int 2015;25(2):115–119

OCEBM Levels of Evidence Working Group. The Oxford Levels of Evidence 1 [Internet]. Oxford Centre for Evidence-Based Medicine Available from: http://www.cebm.net/oxford-centre-evidence-based-medicine-levels-evidence-march-2009/. Accessed January 31 2017.

Triantafyllopoulos GK Elpers ME Burket JC Esposito CI Padgett DE Wright TM Otto Aufranc Award: Large Heads Do Not Increase Damage at the Head-neck Taper of Metal-on-polyethylene Total Hip Arthroplasties. Clin Orthop Relat Res 2016;474(2):330–338

Tan SC Teeter MG Del Balso C Howard JL Lanting BA. Effect of taper design on trunnionosis in metal on polyethylene total hip arthroplasty. J Arthroplasty 2015;30(7):1269–1272

Singh R Manoharan G Craig P Collier S Shaylor P Sinha A Blood metal ions after hybrid metal-on-polyethylene Exeter-Trident total hip replacement. J Orthop Traumatol 2016;17(2):149–153

Reito A Elo P Puolakka T Pajamäki J Eskelinen A Femoral diameter and stem type are independent risk factors for ARMD in the large-headed ASR THR group. BMC Musculoskelet Disord 2015;16(118):118

Panagiotidou A Meswania J Osman K The effect of frictional torque and bending moment on corrosion at the taper interface: an in vitro study. Bone Joint J 2015;97(4):463–472

Hothi HS Whittaker RK Meswania JM Blunn GW Skinner JA Hart AJ Skinner J a Hart A.J. Influence of stem type on material loss at the metal-on-metal pinnacle taper junction. Proc Inst Mech Eng Part H J Eng Med 2015;229(1):91–97

Lavernia CJ Iacobelli DA Villa JM Jones K Gonzalez JL Jones WK Trunnion-Head Stresses in THA: Are Big Heads Trouble? J Arthroplasty 2015;30(6):1085–1088

Del Balso C Teeter MG Tan SC Lanting BA Howard JL Taperosis: Does head length affect fretting and corrosion in total hip arthroplasty? Bone Joint J 2015;97(7):911–916

Brock TM Sidaginamale R Rushton S Shorter, rough trunnion surfaces are associated with higher taper wear rates than longer, smooth trunnion surfaces in a contemporary large head metal-on-metal total hip arthroplasty system. J Orthop Res 2015;33(12):1868–1874

Witt F Bosker BH Bishop NE Ettema HB Verheyen CC Morlock MM The relation between titanium taper corrosion and cobalt-chromium bearing wear in large-head metal-on-metal total hip prostheses: a retrieval study. J Bone Joint Surg Am 20149618e157, 1-9.

Scholl L Raja LK Lee R Swaminathan V Nevelos J Test Model to Determine Effects of Impaction Force and Loading Due to Patient Activity on Micromotion at the Femoral Head-Stem Taper Junction. Presented at the Orthopaedic Research Society Annual Meeting 2014 New Orleans, LA Poster 1798.

Pereira X Moga I Harrington MA Patel PD Ismaily SK Noble PC Variables Influencing Tribo-Corrosion Of Modular Junctions In Metal-on- Polyethylene THR. Presented at the Orthopaedic Research Society Annual Meeting 2014 New Orleans, LA Poster 1832.

Parekh J Chan N Ismaily SK Noble PC The Effect of Frictional Conditions on Fretting of the Trunnion-Femoral Head Interface: A Finite Element Simulation. Presented at the Orthopaedic Research Society Annual Meeting 2014 New Orleans, LA Poster 0187.

Nassif NA Nawabi DH Stoner K Elpers M Wright T Padgett DE Taper design affects failure of large-head metal-on-metal total hip replacements. Clin Orthop Relat Res 2014;472(2):564–571

Nakahara I Takao M Bandoh S Sugano N Fixation strength of taper connection at head-neck junction in retrieved carbon fiber-reinforced PEEK hip stems. J Artif Organs 2014;17(4):358–363

Matthies A Bills PJ Racasan R Analysis of the Taper Supports Retention of a Well-fixed Stem in Revision Surgery of Metal-on-Metal Hip Replacements. Presented at the American Academy of Orthopaedic Surgeons Annual Meeting 2014 New Orleans, LA Paper 613

Matthies A Cro S Bills P Which factors determine the volume of material lost from the taper junction of metal-on-metal hip. Presented at the American Academy of Orthopaedic Surgeons Annual Meeting 2014 New Orleans, LA Paper 610

Klunklin K Schmidt CM Roy ME Whiteside LA Fretting and corrosion damage at the head-neck taper is reduced with ceramic femoral heads: a retrieval study. Presented at the Orthopaedic Research Society Annual Meeting 2014 New Orleans, LA Poster 1143.

Kluess D Bierbaum S Mittelmeier W Bader R Femoral head diameter, neck and taper length influence the mechanical load and micromotion in the taper connection of total hip replacements. Poster presented at Orthopaedic Research Society Annual Meeting 2014 New Orleans, LA

Goyal N Ho H Fricka KB Engh CA Do you have to remove a corroded femoral stem? J Arthroplasty 2014299 Suppl139–142

Elkins JM Callaghan JJ Brown TD Stability and trunnion wear potential in large-diameter metal-on-metal total hips: a finite element analysis. Clin Orthop Relat Res 2014;472(2):529–542

Dyrkacz RM Brandt JM Ph D The role of head size affecting fretting wear at the head-neck taper junction of modular hip prostheses: a finite element analysis. Presented at the Orthopaedic Research Society Annual Meeting 2014 New Orleans, LA Poster 1859.

Donaldson FE Coburn JC Siegel KL Total hip arthroplasty head-neck contact mechanics: a stochastic investigation of key parameters. J Biomech 2014;47(7):1634–1641

Craig P Bancroft G Burton A Collier S Shaylor P Sinha A Raised levels of metal ions in the blood in patients who have undergone uncemented metal-on-polyethylene Trident-Accolade total hip replacement. Bone Joint J 2014;96(1):43–47

Cip J von Strempel A Bach C Luegmair M Benesch T Martin A Implication of femoral stem on performance of articular surface replacement (ASR) XL total hip arthroplasty. J Arthroplasty 2014;29(11):2127–2135

Cartner JL Aldinger P Li C Collins D Fessenden M Quantifying femoral head taper damage in a 15 year retrieval database. Presented at the Orthopaedic Research Society Annual Meeting 2014 New Orleans, LA Poster 0923.

Streicher R Flohr M Preuss R Frictional torque and fretting corrosion of large ceramic ball heads used with titanium conversion sleeves. Presented at the Orthopaedic Research Society Annual Meeting 2013 San Antonio, TX Poster 1762.

Reito A Puolakka T Elo P Pajamäki J Eskelinen A High prevalence of adverse reactions to metal debris in small-headed ASR™ hips. Clin Orthop Relat Res 2013;471(9):2954–2961

Parekh J Jones H Chan N Noble P Effect of angular mismatch tolerance on trunnion micro-motion in metal-on-metal THA designs. Bone Joint J 2013 95 Suppl 34 261

Panagiotidou A Meswania J Hua J Muirhead-Allwood S Hart A Blunn G Enhanced wear and corrosion in modular tapers in total hip replacement is associated with the contact area and surface topography. J Orthop Res 2013;31(12):2032–2039

Munir S Cross MB Esposito C Sokolova A Walter WL Corrosion in modular total hip replacements : An analysis of the head – neck and stem – sleeve taper connections. Semin Arthroplasty 2014;24(4):240–245

Moga I Harrington MA Ismaily S Noble P Trunnion surface damage in THR: MPE vs MOM articulations. Bone Joint J 2013 95 Suppl 34 140

Levine BR Hsu AR Skipor AK Ten-year outcome of serum metal ion levels after primary total hip arthroplasty: a concise follow-up of a previous report. J Bone Joint Surg Am 2013;95(6):512–518

Kurtz SM Kocagöz SB Hanzlik JA Do ceramic femoral heads reduce taper fretting corrosion in hip arthroplasty? A retrieval study. Clin Orthop Relat Res 2013;471(10):3270–3282

Kocagöz SB Underwood RJ Sivan S Does Taper Angle Clearance Influence Fretting and Corrosion Study. Semin Arthroplasty 2013;24(4):246–254

Higgs GB Hanzlik JA MacDonald DW Gilbert JL Rimnac CM Kurtz SM Implant Research Center Writing Committee. Is increased modularity associated with increased fretting and corrosion damage in metal-on-metal total hip arthroplasty devices?: a retrieval study. J Arthroplasty 2013288)(Suppl2–6

Hexter A Panagiotidou A Singh J Skinner J Hart A Corrosion at the Head-Trunnion Taper Interface in Large Diameter Head Metal-on-Metal Total Hip Arthroplasty: A Comparison of Five Manufacturers. Bone Joint J 2013 95 Suppl 12 3

Dyrkacz RMR Brandt J-M Ojo O a Turgeon TR Wyss UP The Influence of Head Size on Corrosion and Fretting Behaviour at the Head-Neck Interface of Artificial Hip Joints. J Arthroplasty 2013;28(6):1036–1040

Donaldson F Coburn J Siegel K Modern taper and trunnion designs may increase taper fretting wear in THA systems. Presented at the Orthopaedic Research Society Annual Meeting 2013 San Antonio, TX Poster 1798.

Urban R Hall D Gilbert J Are Fretting and Corrosion Reduced in Contemporary Head/Neck Modular Junctions? Presented at the Orthopaedic Research Society Annual Meeting 2012 San Francisco, CA Poster 1050.

Preuss R Lars Haeussler K Flohr M Streicher RM Fretting corrosion and trunnion wear-is it also a problem for sleeved ceramic heads? Semin Arthroplasty 2012;23(4):251–257

Meyer H Mueller T Goldau G Chamaon K Ruetschi M Lohmann CH Corrosion at the cone/taper interface leads to failure of large-diameter metal-on-metal total hip arthroplasties. Clin Orthop Relat Res 2012;470(11):3101–3108

Huot Carlson JC Van Citters DW Currier JH Bryant AM Mayor MB Collier JP Femoral stem fracture and in vivo corrosion of retrieved modular femoral hips. J Arthroplasty 2012;27(7):1389–1396 e1.

Hart A Hexter A Matthies A Head Diameter is Positively Correlated with Taper Corrosion in Retrieved Large Diameter Metal-on-Metal Total Hip Replacements. Presented at the Orthopaedic Research Society Annual Meeting 2012 San Francisco, CA Poster 2035.

Fricka KB Ho H Peace WJ Engh CA Jr Metal-on-metal local tissue reaction is associated with corrosion of the head taper junction. J Arthroplasty 2012278)(Suppl26–31e1.

Collins D Smith S Kamali A A Taper Interface Examination of Sixty Large Diameter Metal-On-Metal Modular Hip Retrievals. Presented at the Orthopaedic Research Society Annual Meeting 2012 San Francisco, CA Poster 1049.

Lavigne M Belzile EL Roy A Morin F Amzica T Vendittoli P-A Comparison of whole-blood metal ion levels in four types of metal-on-metal large-diameter femoral head total hip arthroplasty: the potential influence of the adapter sleeve. J Bone Joint Surg Am 201193Suppl 2128–136

Bolland BJRF Culliford DJ Langton DJ Millington JPS Arden NK Latham JM High failure rates with a large-diameter hybrid metal-on-metal total hip replacement: clinical, radiological and retrieval analysis. J Bone Joint Surg Br 2011;93(5):608–615

Vendittoli P-A Amzica T Roy AG Lusignan D Girard J Lavigne M Metal Ion release with large-diameter metal-on-metal hip arthroplasty. J Arthroplasty 2010;26(2):282–288

Gilbert JL Mehta M Pinder B Fretting crevice corrosion of stainless steel stem-CoCr femoral head connections: comparisons of materials, initial moisture, and offset length. J Biomed Mater Res B Appl Biomater 2009;88(1):162–173

Mroczkowski ML Hertzler JS Humphrey SM Johnson T Blanchard CR Effect of impact assembly on the fretting corrosion of modular hip tapers. J Orthop Res 2006;24(2):271–279

Hallab NJ Messina C Skipor A Jacobs JJ Differences in the fretting corrosion of metal-metal and ceramic-metal modular junctions of total hip replacements. J Orthop Res 2004;22(2):250–259

Chaplin RPS Lee AJ Hooper RM Assessment of wear on the cones of modular stainless steel Exeter hip stems. J Mater Sci Mater Med 2004;15(9):977–990

Goldberg JR Gilbert JL In vitro corrosion testing of modular hip tapers. J Biomed Mater Res B Appl Biomater 2003;64(2):78–93

Goldberg JR Gilbert JL Jacobs JJ Bauer TW Paprosky W Leurgans S A multicenter retrieval study of the taper interfaces of modular hip prostheses. Clin Orthop Relat Res 2002;(401):149–161

Jacobs JJ Skipor AK Patterson LM Metal release in patients who have had a primary total hip arthroplasty. A prospective, controlled, longitudinal study. J Bone Joint Surg Am 1998;80(10):1447–1458

Urban RM Jacobs JJ Gilbert JL Characterization of solid products of corrosion generated by modular-head femoral stems of different designs and materials. In: Marlowe DE, Parr JE, Mayor MB, eds. Modularity of orthopedic implants, ASTM 1301 West Conshohocken, PA ASTM 1997;33-43.

McLean TW Lambert RD Test method for the assessment of fretting at the femoral head and neck taper interface. In: Marlowe DE, Parr JE, Mayor MB, eds. Modularity of orthopedic implants, ASTM 1301 West Conshohocken, PA ASTM 1997; 104-113.

Jani SC Sauer WL McLean TW Lambert RD Kovacs P Fretting corrosion mechanisms at modular implant interfaces. In: Marlowe DE, Parr JE, Mayor MB, eds. Modularity of orthopedic implants, ASTM 1301 West Conshohocken, PA ASTM 1997; 211-225.

Goldberg JR Bucldey CA Jacobs JJ Gilberti JL Corrosion testing of modular hip implants. In: Marlowe DE, Parr JE, Mayor MB, eds. Modularity of orthopedic implants, ASTM 1301 West Conshohocken, PA ASTM 1997;157-176.

Brown SA Abera A D'Onofrio M Flemming C Effects of neck extension, coverage, and frequency on the fretting corrosion of modular THR bore and cone interface. In: Marlowe DE, Parr JE, Mayor MB, eds. Modularity of orthopaedic implants, ASTM 1301 West Conshohocken, PA ASTM 1997;189-199.

Bhambri SK Gilbertson LN Fretting corrosion fatigue study of modular joints in total hip replacements by accelerated in vitro testing. In: Marlowe DE, Parr JE, Mayor MB, eds. Modularity of orthopaedic implants, ASTM 1301 West Conshohocken, PA ASTM 1997;146-155.

Yerby SA Taylor JK Park J Shackelford JF Corrosion at the interface. A possible solution to cobalt-chrome heads on titanium alloy stems. J Arthroplasty 1996;11(2):157–162

Shareef N Levine D Effect of manufacturing tolerances on the micromotion at the Morse taper interface in modular hip implants using the finite element technique. Biomaterials 1996;17(6):623–630

Salvati EA Lieberman JR Huk OL Evans BG Complications of femoral and acetabular modularity. Clin Orthop Relat Res 1995;(319):85–93

Brown SA Flemming CA Kawalec JS Fretting corrosion accelerates crevice corrosion of modular hip tapers. J Appl Biomater 1995;6(1):19–26

Lieberman JR Rimnac CM Garvin KL Klein RW Salvati EA An analysis of the head-neck taper interface in retrieved hip prostheses. Clin Orthop Relat Res 1994;(300):162–167

Cook SD Barrack RL Clemow AJ Corrosion and wear at the modular interface of uncemented femoral stems. J Bone Joint Surg Br 1994;76(1):68–72

Cook SD Barrack RL Baffes GC Wear and corrosion of modular interfaces in total hip replacements. Clin Orthop Relat Res 1994;(298):80–88

Gilbert JL Buckley CA Jacobs JJ In vivo corrosion of modular hip prosthesis components in mixed and similar metal combinations. The effect of crevice, stress, motion, and alloy coupling. J Biomed Mater Res 1993;27(12):1533–1544

Collier JP Mayor MB Jensen RE Mechanisms of failure of modular prostheses. Clin Orthop Relat Res 1992;(285):129–139

Collier JP Surprenant VA Jensen RE Mayor MB Surprenant HP Corrosion between the components of modular femoral hip prostheses. J Bone Joint Surg Br 1992;74(4):511–517

Mathiesen EB Lindgren JU Blomgren GG Reinholt FP Corrosion of modular hip prostheses. J Bone Joint Surg Br 1991;73(4):569–575

Collier JP Surprenant VA Jensen RE Mayor MB Corrosion at the interface of cobalt-alloy heads on titanium-alloy stems. Clin Orthop Relat Res 1991;(271):305–312

Fricker DC Shivanath R Fretting corrosion studies of universal femoral head prostheses and cone taper spigots. Biomaterials 1990;11(7):495–500

Dos Santos CT Barbosa C Monteiro MJ Abud IC Caminha IM Roesler CR Characterization of the fretting corrosion behavior, surface and debris from head-taper interface of two different modular hip prostheses. J Mech Behav Biomed Mater 2016;(62):71–82

Higgs GB MacDonald DW Gilbert JL Implant Research Center Writing Committee. Does taper size have an effect on taper damage in retrieved metal-on-polyethylene total hip devices? J Arthroplasty 2016319)(Suppl277–281

Hutt J Lavigne M Lungu E Belzile E Morin F Vendittoli PA Comparison of whole-blood metal ion levels among four types of large-head, metal-on-metal total hip arthroplasty implants: a concise follow-up, at five years, of a previous report. J Bone Joint Surg Am 2016;98(4):257–266

Kao YY Koch CN Wright TM Padgett DE Flexural rigidity, taper angle, and contact length affect fretting of the femoral stem trunnion in total hip arthroplasty. J Arthroplasty 2016319)(Suppl254–258

Langton DJ Sidaginamale RP Avery P Retrospective cohort study of the performance of the Pinnacle metal on metal (MoM) total hip replacement: a single-centre investigation in combination with the findings of a national retrieval centre. BMJ Open 201664)(e007847e007847.

Pourzal R Bs DJH Ba NQ Does surface topography play a role in taper damage in head-neck modular junctions? Clin Orthop Relat Res 2016;474(10):2232–2242

Tan SC Lau AC Del Balso C Howard JL Lanting BA Teeter MG Tribocorrosion: ceramic and oxidized zirconium vs cobalt-chromium heads in total hip arthroplasty. J Arthroplasty 2016;31(9):2064–2071

Vesnovsky O Di Prima MA Topeleski LDT Kovacs P An investigation of the geometric and surface finish features of Co–Cr–Mo hip taper junction designs. J Med Device 2016;10(3):030907–030907-3

White PB Meftah M Ranawat AS Ranawat CS A comparison of blood metal ions in total hip arthroplasty using metal and ceramic heads. J Arthroplasty 2016;31(10):2215–2220

Whittaker RK Hothi HS Meswania JM The effect of using components from different manufacturers on the rate of wear and corrosion of the head-stem taper junction of metal-on-metal hip arthroplasties. Bone Joint J 201698-B7917–924

Hothi HS Eskelinen AP Berber R Factors associated with trunnionosis in the metal-on-metal Pinnacle hip. J Arthroplasty 2017;32(1):286–290

Hothi HS Panagiotopoulos AC Whittaker RK Damage patterns at the head-stem taper junction helps understand the mechanisms of material loss. J Arthroplasty 2017;32(1):291–295

Arnholt C Underwood R Macdonald DW Microgrooved surface topography does not influence fretting corrosion of tapers in total hip arthroplasty: classification and retrieval analysis. In: Greenwald A, Steven K, Lemons J, eds. Modularity and taper in total joint replacement devices, STP1591 West Conshohocken, PA ASTM 2015;99-112.

Moharrami N Langton DJ Sayginer O Bull SJ Why does titanium alloy wear cobalt chrome alloy despite lower bulk hardness: A nanoindentation study? Thin Solid Films. Elsevier B.V 2013;(549):79–86

Hothi HS Matthies AK Berber R Whittaker RK Skinner JA Hart AJ The reliability of a scoring system for corrosion and fretting, and its relationship to material loss of tapered, modular junctions of retrieved hip implants. J Arthroplasty 2014;29(6):1313–1317

American Academy of Orthopaedic Surgeons. Current concerns with metal-on-metal hip arthroplasty. 2012. Available at: https://www.aaos.org/uploadedFiles/PreProduction/About/Opinion_Statements/advistmt/1035%20Current%20Concerns%20with%20Metal-on-Metal%20Hip%20Arthroplasty.pdf

Health Canada Important safety information on metal-on-metal hip implant surgery. 2012

Medicines and Healthcare products Regulatory Agency MDA/2012/036: All metal-on-metal (MoM) hip replacements. 2012 Available at: https://assets.publishing.service.gov.uk/media/5485abf6ed915d4c10000273/con155767.pdf.

Plummer DR Berger RA Paprosky WG Sporer SM Jacobs JJ Della Valle CJ Diagnosis and management of adverse local tissue reactions secondary to corrosion at the head-neck junction in patients with metal on polyethylene bearings. J Arthroplasty 2016;31(1):264–268

McGrory BJ McKenney BR Revision for taper corrosion at the head-neck junction: pearls and pitfalls. Curr Rev Musculoskelet Med 2016;9(1):97–102

Hothi HS Berber R Whittaker RK Blunn GW Skinner JA Hart AJ The relationship between cobalt/chromium ratios and the high prevalence of head-stem junction corrosion in metal-on-metal total hip arthroplasty. J Arthroplasty 2016;31(5):1123–1127

Fehring TK Carter JL Fehring KA Odum SM Griffin WL Cobalt to chromium ratio is not a key marker for adverse local tissue reaction (ALTR) in metal on metal hips. J Arthroplasty 2015309 Suppl107–109

Gilbert JL Jacobs JJ The mechanical and electrochemical processes associated with taper fretting crevice corrosion: a review. STP1301. In: Marlowe DE, Parr JE, Mayor MB, eds Modularity of orthopaedic implants. West Conshohocken, PA ASTM 1997;45-59.

Charles M Bourne R Davey JR Greenwald AS Morrey BF Rorabeck CH Soft-tissue balancing of the hip. J Bone Jt Surg 2004;86(5):1078–1088

McPherson EJ Dipane MV Sherif SM Massive Pseudotumor in a 28 mm Ceramic- Polyethylene Revision THA: A Case Report. JISRF Reconstr Rev 2014;4(1):11–17

Huet R Sakona A Kurtz SM Strength and reliability of alumina ceramic femoral heads: Review of design, testing, and retrieval analysis. J Mech Behav Biomed Mater 2011;4(3):476–483

National Joint Registry for England and Wales. 12^th Annual Report. 2015

Australian Orthopaedic Association. Hip and Knee Arthroplasty Annual Report. 2015

Grammatopoulos G Pandit H Glyn-Jones S Optimal acetabular orientation for hip resurfacing. J Bone Joint Surg Br 2010;92(8):1072–1078

Brodner W Grübl A Jankovsky R Meisinger V Lehr S Gottsauner-Wolf F Cup inclination and serum concentration of cobalt and chromium after metal-on-metal total hip arthroplasty. J Arthroplasty 2004198)(Suppl 366–70

Mellon SJ Kwon Y-M Glyn-Jones S Murray DW Gill HS The effect of motion patterns on edge-loading of metal-on-metal hip resurfacing. Med Eng Phys. Institute of Physics and Engineering in Medicine 2011;33(10):1212–1220

Mellon SJ Grammatopoulos G Andersen MS Pandit HG Gill HS Murray DW Optimal acetabular component orientation estimated using edge-loading and impingement risk in patients with metal-on-metal hip resurfacing arthroplasty. J Biomech 2015;48(2):318–323

National Joint Registry for England and Wales. 9^th Annual Report. 2012

Australian Orthopaedic Association. Hip and Knee Arthroplasty Annual Report 2012

Longaray JA Herrera L Schweitzer AA Lee R Essner A How do bearing size and bearing material affect frictional torque? A hip simulator evaluation. Presented at the Orthopaedic Research Society Annual Meeting 2014 New Orleans, LA Poster 1811.

Khan M Kuiper JH Richardson JB Can cobalt levels estimate in-vivo wear of metal-on-metal bearings used in hip arthroplasty? Proc Inst Mech Eng H 2007;221(8):929–942

Smith SL Dowson D Goldsmith AA The effect of femoral head diameter upon lubrication and wear of metal-on-metal total hip replacements. Proc Inst Mech Eng H 2001;215(2):161–170

Leslie I Williams S Brown C Effect of bearing size on the long-term wear, wear debris, and ion levels of large diameter metal-on-metal hip replacements-An in vitro study. J Biomed Mater Res B Appl Biomater 2008;87(1):163–172

Bishop NE Hothan A Morlock MM High friction moments in large hard-on-hard hip replacement bearings in conditions of poor lubrication. J Orthop Res 2013;31(5):802–813

Jauch SY Coles LG Ng LV Miles AW Gill HS Low torque levels can initiate a removal of the passivation layer and cause fretting in modular hip stems. Med Eng Phys 2014;36(9):1140–1146