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The relationship between head-neck ratio and pseudotumour formation in metal-on-metal resurfacing arthroplasty of the hip


Reference:

Grammatopoulos, G., Pandit, H., Murray, D. W. and Gill, H. S., 2010. The relationship between head-neck ratio and pseudotumour formation in metal-on-metal resurfacing arthroplasty of the hip. Journal of Bone and Joint Surgery - British Volume, 92 (11), pp. 1527-1534.

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Official URL:

http://dx.doi.org/10.1302/0301-620X.92B11.24640

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Abstract

Pseudotumour is a rare but important complication of metal-on-metal hip resurfacing that occurs much more commonly in women than in men. We examined the relationship between head-neck ratio (HNR) and pseudotumour formation in 18 resurfaced hips (18 patients) revised for pseudotumour and 42 asymptomatic control resurfaced hips (42 patients). Patients in whom pseudotumour formation had occurred had higher pre-operative HNR than the control patients (mean 1.37 (sd 0.10) vs mean 1.30 (sd 0.08) p = 0.001). At operation the patients with pseudotumours had a greater reduction in the size of their femoral heads (p = 0.035) and subsequently had greater neck narrowing (mean 10.1% (sd 7.2) vs mean 3.8% (sd 3.2) p <0.001). No female patient with a pre-operative HNR

Details

Item Type Articles
CreatorsGrammatopoulos, G., Pandit, H., Murray, D. W. and Gill, H. S.
DOI10.1302/0301-620X.92B11.24640
Related URLs
URLURL Type
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&dopt=Citation&list_uids=21037347PubMedCentral
DepartmentsFaculty of Engineering & Design > Mechanical Engineering
Research CentresCentre for Orthopaedic Biomechanics
RefereedYes
StatusPublished
ID Code30782

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