Document Detail

Acetabular component positioning using the transverse acetabular ligament: can you find it and does it help?
MedLine Citation:
PMID:  20737303     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Several studies have reported that the transverse acetabular ligament (TAL) can be used to orient the acetabular component during total hip arthroplasty and that it can be identified in nearly all patients.
QUESTIONS/PURPOSES: We attempted to determine how often the TAL could be identified during primary THA and its accuracy as a guide for acetabular component positioning.
METHODS: In a prospective series of 63 patients (64 hips) undergoing primary THA, two surgeons attempted to identify the TAL and, if it was found, to use it for acetabular component orientation. Patients in whom the TAL was identified served as the study group and the ligament was used for cup orientation in those patients; the remaining patients in whom the ligament could not be identified served as a control group and had free-hand cup positioning. Anteversion was determined by radiographic measurement from true lateral views.
RESULTS: The TAL was identified in only 30 hips (47%) and was more likely to be found in patients who did not have inferior acetabular osteophytes. Acetabular position was not improved using this ligament for reference.
CONCLUSIONS: The TAL could not be routinely identified at surgery and when used for cup orientation it was no more accurate for cup positioning than free-hand technique.
Noah J Epstein; Steven T Woolson; Nicholas J Giori
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Clinical orthopaedics and related research     Volume:  469     ISSN:  1528-1132     ISO Abbreviation:  Clin. Orthop. Relat. Res.     Publication Date:  2011 Feb 
Date Detail:
Created Date:  2011-01-11     Completed Date:  2011-02-24     Revised Date:  2013-05-28    
Medline Journal Info:
Nlm Unique ID:  0075674     Medline TA:  Clin Orthop Relat Res     Country:  United States    
Other Details:
Languages:  eng     Pagination:  412-6     Citation Subset:  AIM; IM    
Department of Orthopaedic Surgery, Stanford University School of Medicine, Stanford, CA, USA.
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MeSH Terms
Acetabulum / anatomy & histology,  radiography,  surgery*
Arthroplasty, Replacement, Hip / instrumentation*,  methods
Hip Joint / pathology,  surgery
Hip Prosthesis*
Joint Diseases / pathology,  surgery
Ligaments, Articular / anatomy & histology,  radiography*
Middle Aged
Prospective Studies
Reproducibility of Results

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

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