Article

Anteversion of the acetabular component aligned with the transverse acetabular ligament in total hip arthroplasty.

Department of Orthopaedic Surgery, Oe-Kyodo Hospital, Tokushima, Japan.
The Journal of arthroplasty (impact factor: 1.79). 12/2011; 27(6):916-22. DOI:10.1016/j.arth.2011.10.017 pp.916-22
Source: PubMed

ABSTRACT In total hip arthroplasty (THA), accurately positioning the cup is crucial for achieving an adequate postoperative range of motion and stability. For 47 THA cases in which the inferomedial rim of the cup had been positioned parallel to the transverse acetabular ligament, we retrospectively performed the measurements of the radiographic cup anteversion angle relative to the anterior pelvic plane using 3-dimensional reconstruction computed tomography. The mean anteversion angle was 21.2°, with no significant difference detected in mean cup anteversion between the dysplastic hip group (15 hips) and the control group (15 hips). We suggest that the transverse acetabular ligament is a practical anatomical landmark for determining cup anteversion in THA for both dysplastic and nondysplastic hip cases.

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Keywords

3-dimensional reconstruction computed tomography
 
47 THA cases
 
cup anteversion
 
mean anteversion angle
 
measurements
 
nondysplastic hip cases
 
radiographic cup anteversion angle
 
total hip arthroplasty
 
transverse acetabular ligament
 

Hideaki Miyoshi