Document Detail


The removal of acetabular bone in hip resurfacing and cementless total hip replacement: a comparison using the ratio of the size of the acetabular component to the diameter of the native femoral head.
MedLine Citation:
PMID:  23015557     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The purpose of this study was to compare the amount of acetabular bone removed during hip resurfacing (HR) and cementless total hip replacement (THR), after controlling for the diameter of the patient's native femoral head. Based on a power analysis, 64 consecutive patients (68 hips) undergoing HR or THR were prospectively enrolled in the study. The following data were recorded intra-operatively: the diameter of the native femoral head, the largest reamer used, the final size of the acetabular component, the size of the prosthetic femoral head and whether a decision was made to increase the size of the acetabular component in order to accommodate a larger prosthetic femoral head. Results were compared using two-sided, independent samples Student's t-tests. A statistically significant difference was seen in the mean ratio of the size of the acetabular component to the diameter of the native femoral head (HR: 1.05 (SD 0.04) versus THR: 1.09 (SD 0.05); p < 0.001) and largest acetabular reamer used to the diameter of the native femoral head (HR: 1.03 (SD 0.04) versus THR: 1.09 (SD 0.05); p < 0.001). The ratios varied minimally when the groups were subdivided by gender, age and obesity. The decision to increase the size of the acetabular component to accommodate a larger femoral head occurred more often in the THR group (27% versus 9%). Despite the emphasis on avoiding damage to the femoral neck during HR, the ratio of the size of the acetabular component to the diameter of the native femoral head was larger in cementless THR than in HR.
Authors:
M B Cross; M M Dolan; G S Sidhu; J Nguyen; D J Mayman; E P Su
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, N.I.H., Extramural    
Journal Detail:
Title:  The Journal of bone and joint surgery. British volume     Volume:  94     ISSN:  0301-620X     ISO Abbreviation:  J Bone Joint Surg Br     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-09-27     Completed Date:  2012-12-07     Revised Date:  2014-04-08    
Medline Journal Info:
Nlm Unique ID:  0375355     Medline TA:  J Bone Joint Surg Br     Country:  England    
Other Details:
Languages:  eng     Pagination:  1339-43     Citation Subset:  AIM; IM    
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MeSH Terms
Descriptor/Qualifier:
Acetabulum / surgery*
Arthroplasty, Replacement, Hip / methods*
Female
Femur / surgery*
Hip Prosthesis
Humans
Male
Middle Aged
Prospective Studies
Grant Support
ID/Acronym/Agency:
UL1-RR024996/RR/NCRR NIH HHS

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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