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Journal of Bone and Joint Surgery - British Volume, Vol 90-B, Issue 1, 27-30.
doi: 10.1302/0301-620X.90B1.19731  
Copyright © 2008 by British Editorial Society of Bone and Joint Surgery
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Long-term results of a hydroxyapatite-coated femoral component in total hip replacement

A 15- TO 21-YEAR FOLLOW-UP STUDY

S. S. Rajaratnam, FRCS (Tr & Orth), BSc (Hons), Senior Hip & Knee Fellow1; C. Jack, MRCS, Specialist Registrar2; A. Tavakkolizadeh, FRCS (Tr & Ortho), MSc, Specialist Registrar3; M. D. George, FRCS (Tr & Orth), Hip Fellow4; R. J. Fletcher, MRCS, BSc(Hons), Research Registrar5; M. Hankins, BSc(Hons), FRSS, Senior Research Fellow/Statistician6; and J. A. N. Shepperd, FRCS, Consultant Orthopaedic Surgeon5

1 Peninsula Orthopaedic Research Institute, 812 Pittwater Road, Deewhy, Sydney, Australia.
2 Queen Elizabeth Hospital, Woolwich, London SE18 4QH, UK.
3 Kings College Hospital, Denmark Hill, London SE5 9RS, UK.
4 Guy’s Hospital, St Thomas’ Street, London Bridge, SE1 9RT, UK.
5 Conquest Hospital, The Ridge, St Leonards-on-Sea, East Sussex TN37 7RD, UK.
6 Brighton & Sussex Medical School, Falmer BN1 9RH, UK.

Correspondence should be sent to Mr S. S. Rajaratnam; e-mail: srajaratnam{at}talk21.com

Between 1986 and 1991 we implanted 331 consecutive Furlong hydroxyapatite-coated femoral components of a total hip replacement in 291 patients. A cemented acetabular prosthesis was used in 217 hips and a hydroxyapatite-coated component in 114. We describe the long-term clinical and radiological survival of the femoral component at a mean follow-up of 17.5 years (15 to 21). Only two patients (0.68%) were lost to follow-up. With revision of the femoral component for any reason as the endpoint, the survival at a mean of 17 years was 97.4% (95% confidence interval 94.1 to 99.5), and with revision for aseptic loosening as the endpoint it was 100%. The survival at a maximum of 21 years with revision of the femoral component for any reason as the endpoint was 97.4% (95% confidence interval 81.0 or 99.5). These results compare favourably with the best long-term results of cemented or uncemented femoral components used in total hip replacement.




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Hip, Knee, Trauma, Upper limb, Foot & Ankle, Paediatrics, Oncology, Spine, Arthroplasty, General