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Journal of Bone and Joint Surgery - British Volume, Vol 90-B, Issue 4, 424-429.
doi: 10.1302/0301-620X.90B4.20522  
Copyright © 2008 by British Editorial Society of Bone and Joint Surgery
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Obesity in total hip replacement

J. G. Andrew, MD, FRCS(Orth), Consultant Orthopaedic Surgeon1; J. Palan, MRCS(Eng), Clinical Research Fellow and Specialty Registrar in Orthopaedics2; H. V. Kurup, MS(Orth), MRCS, Specialist Registrar in Orthopaedics3; P. Gibson, FRCS(Orth), Consultant Orthopaedic Surgeon4; D. W. Murray, MD, FRCS(Orth), Professor of Orthopaedic Surgery and Consultant Orthopaedic Surgeon2; and D. J. Beard, MSc, DPhil, University Research Lecturer and Research Council of United Kingdom Fellow2

1 Department of Orthopaedics Ysbyty Gwynedd, Bangor LL57 2PW, UK.
2 Nuffield Department of Orthopaedic Surgery Nuffield Orthopaedic Centre NHS Trust, Headington, Oxford OX3 7LD, UK.
3 Mayday University Hospital, 530 London Road, Croydon CR7 7YE, UK.
4 Woodend Hospital, Eday Road, Woodend, Aberdeen AB15 6XS, UK.

Correspondence should be sent to Dr D. J. Beard; e-mail: david.beard{at}orthopaedic-surgery.oxford.ac.uk

A prospective, multi-centre study was carried out on 1421 total hip replacements between January 1999 and July 2007 to examine if obesity has an effect on clinical outcomes.

The patients were categorised into three groups: non-obese (body mass index (BMI) < 30 kg/m2), obese (BMI 30 to 40 kg/m2) and morbidly obese (BMI > 40 kg/m2). The primary outcome measure was the change in Oxford hip score at five years. Secondary outcome measures included dislocation and revision rates, increased haemorrhage, deep infection, deep-vein thrombosis and pulmonary embolism, mean operating time and length of hospital stay. Radiological analysis assessing heterotopic ossification, femoral osteolysis and femoral stem positioning was performed. Data were incomplete for 362 hips (25.5%)

There was no difference in the change in the Oxford hip score, complication rates or radiological changes at five years between the groups. The morbidly obese group was significantly younger and required a significantly longer operating time. Obese and morbidly obese patients have as much to gain from total hip replacement as non-obese patients.




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eLetters:

Read all eLetters

Influence of obesity on total hip replacement
Manoj Todkar
J Bone Joint Surg Br Online, 15 Apr 2008 [Full text]
Obesity in total hip replacement
Benedict A Rogers, et al.
J Bone Joint Surg Br Online, 8 May 2008 [Full text]
Obesity - a risk factor for joint replacement
Peter FM Choong, et al.
J Bone Joint Surg Br Online, 10 Jun 2008 [Full text]
Authors' reply:
David J Beard, et al.
J Bone Joint Surg Br Online, 6 Oct 2008 [Full text]

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