We report a series of 706 patients (759 hip implants) with an average follow up of 10.5 years (range, 10 - 11 years) following total hip replacement (THR) using a cemented custom-made femoral stem and a cemented HDP acetabular component. The fate of every implant is known. One hundred and seventy-four patients (23%) were deceased at the time of their 10-year review - all died with a functioning THR in situ. Four hundred and sixty-two patients (61%) were subsequently reviewed. One hundred and twenty three patients (16%) were assessed by telephone review, as they were too ill or unwilling to attend. Kaplan-Meier survival analysis (all components) demonstrated a median survival at 10 years of 96.05% or 95% Confidence Intervals (CI) for median survival of (94.41% to 97.22%). Revision surgery occurred in 30 cases (3.9%). Seventeen had full revisions (2.2%) and 13 (1.7%) socket revisions only. Twenty-one out of 30 revisions were for infection or dislocation. There were 2 cases (0.3%) of revision for aseptic loosening of the stem. The 10-year results of the custom femoral titanium stem are encouraging and compare well with other cemented systems.
WallaceM.E., WatsonJ.R.P., NixonJ.R., CohenA., IsaacG., OrrJ., BeverlandD.E.Experience with custom cemented femoral components in total hip arthroplasty, “Accuracy of radiographic measurement for custom total hip replacement”. Abstracts of the 5th Annual International Symposium on Custom-made Prostheses, Windsor, UK, 1–3 October, 1992. International Society for the Study of Custom-made Prostheses 1992.
2.
JohnstonR.C., FitzgeraldRHJr., HarrisW.H., PossR., MüllerM.E., SledgeC.B.Clinical and radiographic evaluation of total hip replacement. A standard system of terminology for reporting results.J Bone Joint Surg Am1990; 72: 161–8.
3.
O'BrienS.The effect of acetabular and femoral component placement on final hip geometry using the Belfast custom hip replacement.Belfast, UK: The Queens University of Belfast, Faculty of Engineering, School of Mechanical and Manufacturing Engineering, May 2003. PhD thesis, pp. 91–100.
4.
O'BrienS., WilsonR.K., ThompsonN.W., BeverlandD.E.The cemented custom femoral stem - A ten-year review. Podium presentation at the British Hip Society Meeting. Sheffield, UK, March 4–5, 2004. In: Orthopaedic proceedings.J Bone Joint Surg Br2005; 87(suppl 1): 41.
5.
BeverlandD.E., KernohanW.G., NixonJ.R., OrrJ.F., WatsonP.Pressurization of bone cement under standard, flanged and custom acetabular components for total hip replacement.Proc Inst Mech Eng [H]1993; 207: 19–23.
6.
O'BrienS., JamesP., EngelaD., BeverlandD., KernohanG.Total hip replacement: a study of customized prostheses.Nurs Stand1996; 10: 37–41.
7.
AdairA., MohamedM., O'BrienS., NixonJ.R., BeverlandD.E.Control of joint centre and horizontal offset using a custom femoral component with a Duraloc socket. In: Orthopaedic Proceedings.J Bone Joint Surg Br2003; 85(suppl 1): 63.
8.
MohamedM., AdairA., DennisonJ.L., O'BrienS.B., NixonJ.R., BeverlandD.E.Control of joint centre and leg length using The Belfast Custom X-press femoral component with a Duraloc socket. British Hip Society, Cambridge, UK, March 2001. In: Orthopaedic Proceedings.J Bone Joint Surg Br2002; 84(suppl 2): 151.
9.
ThompsonN.W., AdairA., MohammedM., O'BrienS., BeverlandD.E.Control of leg length during primary total hip arthroplasty. In: Orthopaedic Proceedings.J Bone Joint Surg Br2004; 86(suppl 2): 123–4.
10.
ArchboldH.A., MockfordB., MolloyD., McConwayJ., OgondaL., BeverlandD.The transverse acetabular ligament: an aid to orientation of the acetabular component during primary total hip replacement: a preliminary study of 1000 cases investigating postoperative stability.J Bone Joint Surg Br2006; 88: 883–6.
11.
O'BrienS., EngelaD.W., BeverlandD.E., KernohanW.G.A study of factors in hip replacement dislocation - part one.Nurs Stand1996; 11: 33–8.
12.
O'BrienS., EngelaD.W., BeverlandD.E., KernohanW.G.A study of factors in hip replacement dislocation - part two.Nurs Stand1996; 11: 39–42.
13.
NobleP.C., TullosH.S., LandonG.C.The optimum cement mantle for total hip replacement: theory and practice. Extended longevity in modern cemented arthroplasties, AAOS.Washington, USA: Instructional course notes1992; 307: 145–50.
14.
HarrisW.H.Traumatic arthritis of the hip after dislocation and acetabular fractures: treatment by mold arthroplasty. An end-result study using a new method of result evaluation.J Bone Joint Surg Am1969; 51: 737–55.
15.
DawsonJ., FitzpatrickR., CarrA., MurrayD.Questionnaire on the perceptions of patients about total hip replacement.J Bone Joint Surg Br1996; 78: 185–90.
16.
WilliamsH.D., BrowneG., GieG.A., LingR.S., TimperleyA.J., WendoverN.A.The Exeter universal cemented femoral component at 8 to 12 years, a study of the first 325 hips.J Bone Joint Surg Br2002; 84: 324–34.
17.
AltmanR.D., HochbergM., MurphyWAJr., WolfeF., LequesneM.Atlas of individual radiographic features in osteoarthritis.Osteoarthritis Cartilage1995; 3 Suppl A: 3–70.
18.
Garcia-CimbreloE., Diez-VazquezV., MaderoR., MunueraL.Progression of radiolucent lines adjacent to the acetabular component and factors influencing migration after Charnley low-friction total hip arthroplasty.J Bone Joint Surg Am1997; 79: 1373–80.
19.
FowlerJ.L., GieG.A., LeeA.J., LingR.S.Experience with the Exeter total hip replacement since 1970.Orthop Clin North Am1988; 19: 477–89.
20.
McCaskieA.W., BrownA.R., ThompsonJ.R., GreggP.J.Radiological evaluation of the interfaces after cemented total hip replacement: interobserver and intraobserver agreement.J Bone Joint Surg Br1996; 78: 191–4.
21.
GruenT.A., McNeiceG.M., AmstutzH.C.“Modes of failure” of cemented stem-type femoral components: a radiographic analysis of loosening.Clin Orthop Relat Res1979; (141): 17–27.
22.
KobayashiS., TakaokaK., SaitoN., HisaK.Factors affecting aseptic failure of fixation after primary Charnley total hip arthroplasty. Multivariate survival analysis.J Bone Joint Surg Am1997; 79: 1618–27.
23.
SporerS.M., CallaghanJ.J., OlejniczakJ.P., GoetzD.D., JohnstonR.C.The effects of surface roughness and polymethylmethacrylate precoating on the radiographic and clinical results of the Iowa hip prosthesis. A study of patients less than fifty years old.J Bone Joint Surg Am1999; 81: 481–92.
24.
BrookerA.F., BowermanJ.W., RobinsonR.A., RileyL.H.Jr.. Ectopic ossification following total hip replacement. Incidence and a method of classification.J Bone Joint Surg Am1973; 55: 1629–32.
25.
EggliS., WooA.Risk factors for heterotopic ossification in total hip arthroplasty.Arch Orthop Trauma Surg2001; 121: 531–5.
26.
BlandJ.M., AltmanD.G.Survival probabilities (the Kaplan-Meier method).BMJ1998; 317: 1572.
27.
WilsonE.B.Probable inference, the law of succession, and statistical inference.J Am Stat Assoc1927; 22: 209–12. And link used to create the confidence intervals: www.hutchon.freeserve.co.uk/Wilsons.htm.
28.
CharlwoodA.P., ThompsonN.W., ThompsonN.S., BeverlandD.E., NixonJ.R.Recurrent hip arthroplasty dislocation: good outcome after cup augmentation in 20 patients followed for 2 years.Acta Orthop Scand2002; 73: 502–5.
29.
The Royal College of Surgeons of England.An investigation of the performance of the 3M capital hip system.London: Royal College of Surgeons2001.
30.
BertJ.M.Custom total hip arthroplasty.J Arthroplasty1996; 11: 905–15.
MulierJ.C., MulierM., BradyL.P.. A new system to produce intraoperatively custom femoral prosthesis from measurements taken during the surgical procedure.Clin Orthop Relat Res1989; (249): 97–112.
33.
MulierM.The importance of intra-operative design and manufacturing of cementless hip implants. Proceedings of the 10th Conference of the European Orthopaedic Research Society, October 12–15, 2000. Wiesbaden: EORS 2000.
34.
BenumP., AamodtA.Customized femoral stems. Review of 10 years experimental clinical research.Acta Orthopedica et Traumatologica Hellenica2000; 51: 346–57.
35.
AamodtA., Lund-LarsenJ., EineJ., AndersenE., BenumP., Schnell HusbyO.Mechanical stability of custom and anatomical femoral stems: an experimental study in human femora.Hip International2002; 12: 263–73.
36.
GrantP., NordslettenL., SnorrasonF., AamodtA.Differences in stability and bone mineral density changes between the Scandinavian Customized Prosthesis (SCP) and the cemented Elite Plus femoral stem. A randomised prospective study with radiostereometric 2 year follow-up. Proceedings of the 52nd Congress of the Nordic Orthopaedic Federation, Reykjavík, Iceland, 16–19 June 2004. Available at: http://www.iceort.org/nof2004/AbstractsNOF.pdf - Page 36.
